PatentDe  


Dokumentenidentifikation EP1366237 06.09.2007
EP-Veröffentlichungsnummer 0001366237
Titel WEICHES ABSORBIERENDES TISSUE PAPIER
Anmelder Kimberly-Clark Worldwide, Inc., Neenah, Wis., US
Erfinder LIU, Kou-Chang, Appleton, WI 54913, US;
FORTUNE, Amber Marie, Kaukauna, WI 54130, US;
CARLOW, Geoffrey Fenn, Neenah, WI 54956, US;
FERGUSON, Timothy Dale, Appleton, WI 54914, US;
WENDLER, Roger Edward, Sherwood, WI 54169, US;
VAN WYCHEN, Heath David, Kimberly, WI 54136, US;
VANDERHEIDEN, Daniel John, Menasha, WI 54952, US
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 60221362
Vertragsstaaten DE, FR, GB, IT
Sprache des Dokument EN
EP-Anmeldetag 08.02.2002
EP-Aktenzeichen 027062066
WO-Anmeldetag 08.02.2002
PCT-Aktenzeichen PCT/US02/03812
WO-Veröffentlichungsnummer 2002066734
WO-Veröffentlichungsdatum 29.08.2002
EP-Offenlegungsdatum 03.12.2003
EP date of grant 25.07.2007
Veröffentlichungstag im Patentblatt 06.09.2007
IPC-Hauptklasse D21H 17/59(2006.01)A, F, I, 20051017, B, H, EP
IPC-Nebenklasse D21H 21/22(2006.01)A, L, I, 20051017, B, H, EP   D21H 27/00(2006.01)A, L, I, 20051017, B, H, EP   

Beschreibung[en]
Background of the Invention

In the field of soft tissues, such as facial tissue and bath tissue, it is well known that the application of polysiloxanes to the surface of the tissue can impart an improved surface feel to the tissue. However, polysiloxanes are also known to impart hydrophobicity to the treated tissue. Hence it is difficult to find a proper balance between softness and absorbency, both of which are desirable attributes for tissue, particularly bath tissue.

Summary of the Invention

It has now been discovered that the softness of a tissue can be improved with minimal negative impact on the absorbency or wettability of the tissue by treating one or both outer surfaces of the tissue with a particular group of hydrophilically-modified amino-functional polydimethylsiloxanes. More specifically, suitable polysiloxane structures have one or more pendant groups which contain a terminal amine and at least one ethylene oxide moiety. The terminal amine group and the ethylene oxide moieties can be parts of the same pendant group or different pendant groups. A general structure is as follows: wherein:

  • X is hydrogen, hydroxy, amino, C1-C8 straight chain, branched, cyclic, unsubstituted or hydrophilically substituted alkyl or alkoxyl radical;
  • m = 20-100,000;
  • p = 1-5000;
  • q = 0-5000;
  • R1 = a C1-C6, straight chain, branched or cyclic alkyl radical;
  • R2 = a C1-C10 straight chain or branched, substituted or unsubstituted alkylene diradical;
  • wherein R5 is an unsubstituted or a hydrophilically substituted C1-C10 alkylene diradical; r = 1-10,000;
  • s = 0-10,000; and
  • Z = hydrogen, C1-C24 alkyl group, or a G-group, where G is selected from the following: -R6COOR7; -CONR8R9; -SO3R8; and PO R8R9, where R6 is a substituted or unsubstituted C1-C6 alkylene diradical; R7, R8, and R9 are independently a hydrogen radical or a substituted or unsubstituted C1-C8 alkyl radical; and
  • wherein R10, R11, and R12 are independently an unsubstituted or a hydrophilically substituted C1-C8 alkylene diradical;
  • t = 0-10,000;
  • u = 0-10,000;
  • w = 0- 10,000; and
  • R13, R14 and R15 are independently a hydrogen radical, an unsubstituted or a hydroxyl, carboxyl or other functionally substituted C1-C10 straight chain, branched, or cyclic alkyl radical.

Representative species within the foregoing general structure include the following (the values of "m", "p" and "q" are as defined above; the terms "EO" and "PO" are shorthanded representations of "ethylene oxide" and "propylene oxide" moieties, respectively):

The hydrophilically-modified amino-functional polydimethylsiloxanes described above can be applied to the tissue web alone or in conjunction with other chemicals, such as bonders or debonders. They can be applied to the tissue web, particularly an uncreped throughdried web, by spraying or printing. Rotogravure printing of an aqueous emulsion is particularly effective. Add-on amounts can be from about 0.5 to about 15 dry weight percent, based on the weight of the tissue, more specifically from about 1 to about 10 dry weight percent, still more specifically from about 1 to about 5 weight percent, still more specifically from about 2 to about 5 weight percent. The distribution of the deposits of the hydrophilically-modified amino-functional polydimethylsiloxanes is substantially uniform over the printed surface of the tissue, even though the surface of the tissue, such as in the case of uncreped throughdried tissues, may be highly textured and three-dimensional. The printing does limit the deposits to the high points of the textured tissue sheets, thereby ensuring a soft hand feel.

The Wet Out Time (hereinafter defined) for tissues of this invention can be about 10 seconds or less, more specifically about 8 seconds or less, still more specifically about 6 seconds or less, still more specifically about 5 seconds or less, still more specifically from about 4 to about 6 seconds. As used herein, "Wet Out Time" is related to absorbency and is the time it takes for a given sample to completely wet out when placed in water. More specifically, the Wet Out Time is determined by cutting 20 sheets of the tissue sample into 63,5 mm (2.5 inch) squares. The number of sheets used in the test is independent of the number of plies per sheet of product. The 20 square sheets are stacked together and stapled at each corner to form a pad. The pad is held close to the surface of a constant temperature distilled water bath (23 +/-2° C.), which is the appropriate size and depth to ensure the saturated specimen does not contact the bottom of the container and the top surface of the water at the same time, and dropped flat onto the water surface, staple points down. The time taken for the pad to become completely saturated, measured in seconds, is the Wet Out Time for the sample and represents the absorbent rate of the tissue. Increases in the Wet Out Time represent a decrease in absorbent rate.

The "Differential Wet Out Time" is the difference between the Wet Out Times of a tissue sample treated with a hydrophilically-modified amino-functional polydimethylsiloxane and a control tissue sample which has not been treated. The Differential Wet Out Time, for purposes of this invention, can be about 5 seconds or less, more specifically about 4 seconds or less, still more specifically about 3 seconds or less, still more specifically about 2 seconds or less, and still more specifically about 1 second or less.

The ratio of the Wet Out Time, expressed in seconds, to the add-on amount of the hydrophilically-modified amino-functional polydimethylsiloxane in the tissue, expressed as dry weight percent of the weight of the tissue, can be about 3 seconds per weight percent or less, more specifically about 2 seconds per weight percent or less, still more specifically from about 1 to about 3 seconds per weight percent.

The ratio of the Differential Wet Out Time to the add-on amount of the hydrophilically-modified amino-functional polydimethylsiloxane can be about 2 seconds per weight percent or less, more specifically about 1 second per weight percent or less, still more specifically about 0.5 second per weight percent or less.

Tissue sheets useful for purposes of this invention can be creped or uncreped. Such tissue sheets can be used for facial tissues or bath tissues. They can have one, two, three or more plies. The basis weight of the tissue product can be from about 25 to about 50 grams per square meter. If used for bath tissue, a single ply tissue having a basis weight of from about 30-40 grams per square meter is particularly suitable.

Brief Description of the Drawings

  • Figure 1 is a schematic diagram of an uncreped throughdried process for making bath tissue in accordance with this invention.
  • Figure 2 is a schematic diagram of the post-manufacturing method of handling the uncreped throughdried web and the rotogravure coating process used to apply the hydrophilically-modified amino-functional polydimethylsiloxane emulsion in accordance with this invention.

Detailed Description of the Drawings

Referring to Figure 1, shown is a schematic flow diagram of a throughdrying process for making uncreped throughdried tissue sheets. Shown is the headbox 1 which deposits an aqueous suspension of papermaking fibers onto an inner forming fabric 3 as it traverses the forming roll 4. Outer forming fabric 5 serves to contain the web while it passes over the forming roll and sheds some of the water. The wet web 6 is then transferred from the inner forming fabric to a wet end transfer fabric 8 with the aid of a vacuum transfer shoe 9. This transfer is preferably carried out with the transfer fabric traveling at a slower speed than the forming fabric (rush transfer) to impart stretch into the final tissue sheet. The wet web is then transferred to the throughdrying fabric 11 with the assistance of a vacuum transfer roll 12. The throughdrying fabric carries the web over the throughdryer 13, which blows hot air through the web to dry it while preserving bulk. There can be more than one throughdryer in series (not shown), depending on the speed and the dryer capacity. The dried tissue sheet 15 is then transferred to a first dry end transfer fabric 16 with the aid of vacuum transfer roll 17. The tissue sheet shortly after transfer is sandwiched between the first dry end transfer fabric and the transfer belt 18 to positively control the sheet path. The air permeability of the transfer belt is lower than that of the first dry end transfer fabric, causing the sheet to naturally adhere to the transfer belt. At the point of separation, the sheet follows the transfer belt due to vacuum action. Suitable low air permeability fabrics for use as transfer belts include, without limitation, COFPA Mononap NP 50 dryer felt (air permeability of about 50 cubic feet per minute per square foot) and Asten 960C (impermeable to air). The transfer belt passes over two winding drums 21 and 22 before returning to pick up the dried tissue sheet again. The sheet is transferred to the parent roll 25 at a point between the two winding drums. The parent roll is wound onto a reel spool 26, which is driven by a center drive motor.

Particularly suitable methods of producing uncreped throughdried basesheets for purposes of this invention are described in U.S. 6,017,417 issued January 25, 2000 to Wendt et al. and U.S. 5,944,273 issued August 31, 1999 to Lin et al.

Figure 2 illustrates a suitable method for applying the hydrophilically-modified amino-functional polydimethylsiloxane to the tissue basesheet. Shown is the parent roll 25 being unwound and passed through two calender nips between calender rolls 30a and 31 a and 30b and 31 b. The calendered web is then passed to the rotogravure coating station comprising a first closed doctor chamber 33 containing the hydrophilically-modified amino-functional polydimethylsiloxane emulsion to be applied to a first side of the web, a first engraved steel gravure roll 34, a first rubber backing roll 35, a second rubber backing roll 36, a second engraved steel gravure roll 37 and a second closed doctor chamber 38 containing the hydrophilically-modified amino-functional polydimethylsiloxane emulsion to be applied to the second side of the web. If both sides of the web are to be treated, the two emulsions can be the same or different. The calendered web passes through a fixed-gap nip between the two rubber backing rolls where the hydrophilically-modified amino-functional polydimethylsiloxane emulsion is applied to the web. The treated web is then passed to the rewinder where the web is wound onto logs 40 and slit into rolls of bath tissue.

Examples Example 1.

In order to further illustrate this invention, an uncreped throughdried tissue was produced using the methods described in Figures 1 and 2 and treated with a hydrophilically-modified amino-functional polydimethylsiloxane as set forth in structure (17) described herein above.

More specifically, a single-ply, three-layered uncreped throughdried bath tissue was made using eucalyptus fibers for the outer layers and softwood fibers for the inner layer. Prior to pulping, a quaternary ammonium softening agent (C-6027 from Goldschmidt Corp.) was added at a dosage of 4.1 kg/Mton of active chemical per metric ton of fiber to the eucalyptus furnish. After allowing 20 minutes of mixing time, the slurry was dewatered using a belt press to approximately 32% consistency. The filtrate from the dewatering process was either sewered or used as pulper make-up water for subsequent fiber batches but not sent forward in the stock preparation or tissuemaking process. The thickened pulp containing the debonder was subsequently re-dispersed in water and used as the outer layer furnishes in the tissuemaking process.

The softwood fibers were pulped for 30 minutes at 4 percent consistency and diluted to 3.2 percent consistency after pulping, while the debonded eucalyptus fibers were diluted to 2 percent consistency. The overall layered sheet weight was split 30%/40%/30% among the eucalyptus/refined softwood/ eucalyptus layers. The center layer was refined to levels required to achieve target strength values, while the outer layers provided the surface softness and bulk. Parez 631NC was added to the center layer at 2-4 kilograms per tonne of pulp based on the center layer.

A three layer headbox was used to form the wet web with the refined northern softwood kraft stock in the two center layers of the headbox to produce a single center layer for the three-layered product described. Turbulence-generating inserts recessed about 3 inches (75 millimeters) from the slice and layer dividers extending about 1 inch (25.4 millimeters) beyond the slice were employed. The net slice opening was about 0.9 inch (23 millimeters) and water flows in all four headbox layers were comparable. The consistency of the stock fed to the headbox was about 0.09 weight percent.

The resulting three-layered sheet was formed on a twin-wire, suction form roll, former with forming fabrics (12 and 13 in Figure 1) being Lindsay 2164 and Asten 867a fabrics, respectively. The speed of the forming fabrics was 11.9 meters per second. The newly-formed web was then dewatered to a consistency of about 20-27 percent using vacuum suction from below the forming fabric before being transferred to the transfer fabric, which was travelling at 9.1 meters per second (30% rush transfer). The transfer fabric was an Appleton Wire T807-1. A vacuum shoe pulling about 6-15 inches (150-380 millimeters) of mercury vacuum was used to transfer the web to the transfer fabric.

The web was then transferred to a throughdrying fabric (Lindsay Wire T1205-1) previously described in connection with Figure 2 and as illustrated in Figure 9). The throughdrying fabric was travelling at a speed of about 9.1 meters per second. The web was carried over a Honeycomb throughdryer operating at a temperature of about 350°F. (175°C.) and dried to final dryness of about 94-98 percent consistency. The resulting uncreped tissue sheet was then wound into a parent roll.

The parent roll was then unwound and the web was calendered twice. At the first station the web was calendered between a steel roll and a rubber covered roll having a 4 P&J hardness. The calender loading was about 16 kg/cm (about 90 pounds per lineal inch (pli)). At the second calendering station, the web was calendered between a steel roll and a rubber covered roll having a 40 P&J hardness. The calender loading was about 25 kg/cm (about 140 pli).The thickness of the rubber covers was about 0.725 inch (1.84 centimers).

The calendered single-ply web was then fed into the rubber-rubber nip of the rotogravure coater to apply the hydrophilically-modified amino-functional polydimethylsiloxane emulsion to both sides of the web. The aqueous emulsion contained 25.0% WETSOFT® CTW (Kelmar Industries), 8.3% surfactant, 0.25% antifoaming agent, 0.2% acetic acid, 0.1% aloe, 0.1% Vitamin E, 0.05% preservative, and the balance water. The gravure rolls were electronically engraved, chrome over copper rolls supplied by Specialty Systems, Inc., Louisville, Kentucky. The rolls had a line screen of 200 cells per lineal inch and a volume of 6.0 Billion Cubic Micrometer (BCM) per square inch of roll surface. Typical cell dimensions for this roll were 140 µm in width and 33 µm in depth using a 130 degree engraving stylus. The rubber backing offset applicator rolls were a 75 Shore A durometer cast polyurethane supplied by American Roller Company, Union Grove, Wisconsin. The process was set up to a condition having 0.375 inch interference between the gravure rolls and the rubber backing rolls and 0.003 inch clearance between the facing rubber backing rolls. The simultaneous offset/offset gravure printer was run at a speed of 2000 feet per minute using gravure roll speed adjustment (diferential) to meter the polysiloxane emulsion to obtain the desired addition rate. The gravure roll speed differential used for this example was 1000 feet per minute. This process yielded an add-on level of 2.5 weight percent total add-on based on the weight of the tissue. The tissue was then converted into bath tissue rolls. Sheets from the bath tissue rolls had a silky, lotiony hand feel and a Wet Out Time of 5.0 seconds. (Similarly made tissues without the treatment of this invention had a Wet Out Time of about 4.0 seconds.) The ratio of the Wet Out Time to the weight percent add-on amount was 2.0.

1 inch = 25.4 mm; 1 foot = 0.305 m

Example 2.

An uncreped throughdried tissue was made substantially as described above with the following exceptions: (1) the overall layered weight is split 20%/60%/20% among the eucalyptus / refined softwood / eucalyptus layers; (2) no Parez was added to the center layer; (3) the add-on level of the hydrophilically-modified amino-functional polydimethylsiloxane was 3.0 weight percent; (4) the structure of the hydrophilically-modified amino-functional polydimethylsiloxane was as set forth in structure (14) herein above; and (5) the hydrophilically-modified amino-functional polydimethylsiloxane constituted 40 weight percent of the aqueous emulsion used to deliver the hydrophilically-modified amino-functional polydimethylsiloxane to the tissue. The resulting bath tissue product obtained had a silky, lotiony hand feel and a Wet Out Time of 7 seconds.

Example 3.

An uncreped throughdried tissue was produced similarly as described in Example 1 with the following exceptions: (1) prior to pulping, an amino functionalized polydimethylsiloxane (AF2340 from Kelmar Industries) was added to the eucalyptus fibers at a dosage of 2 kg/Mton of active chemical per metric ton of fiber: (2) the add-on level of the hydrophilically-modified amino-functional polydimethylsiloxane was 1.5 weight percent; (3) the structure of the hydrophilically-modified amino-functional polydimethylsiloxane printed onto the tissue was as set forth in structure (10) herein above; and (4) the hydrophilically-modified amino-functional polydimethylsiloxane constituted 20 weight percent of the aqueous emulsion used to deliver the hydrophilically-modified amino-functional polydimethylsiloxane to the tissue. The resulting bath tissue product obtained had a silky, lotiony hand feel and a Wet Out Time of 4.8 seconds.

It will be appreciated that the foregoing example and discussion is for purposes of illustration only and is not to be construed as limiting the scope of this invention, which is defined by the following claims.


Anspruch[de]
Gewebe mit einer Wet-out-Zeit von ungefähr zehn Sekunden oder weniger, das etwa 0,5 bis etwa 15 Trockengewichtsprozent eines hydrophil modifizierten aminofunktionellen Polydimethylsiloxans der folgenden Struktur enthält: in der bedeuten: X Wasserstoff, Hydroxy, Amino, ein geradkettiges, verzweigtes, cyclisches, unsubstituiertes oder hydrophil substituiertes C1-C8-Alkyl- oder -Alkoxyradikal, m =20-100000, p = 1 - 5000, q = 0 - 5000, R1 = ein geradkettiges, verzweigtes oder cyclisches C1-C6-Alkylradikal, R2 = ein geradkettiges oder verzweigtes, substituiertes oder unsubstituiertes C1-C10- Alkylendiradikal, wobei R5 ein unsubstituiertes oder hydrophil substituiertes C1-C10-Alkylendiradikal ist, r = 1 - 10000, s =0-10000 und Z = Wasserstoff, eine C1-C24-Alkylgruppe oder eine G-Gruppe, wobei G unter folgendem ausgewählt ist:

-R6COOR7, -CONR8R9, -SO3R8 und POR8R9, wobei R6 ein substituiertes oder unsubstituiertes C1-C6,-Alkylendiradikal ist, R7, R8 und R9 unabhängig voneinander ein Wasserstoffradikal oder ein substituiertes oder unsubstituiertes C1-C8-Alkylradikal bedeuten, und
wobei R10, R11 und R12 unabhängig voneinander ein unsubstituiertes oder ein hydrophil substituiertes C1-C8-Alkylendiradikal bedeuten, t = 0 - 10000 u = 0 - 10000, w = 0 - 10000 und R13, R14 und R15 unabhängig voneinander ein Wasserstoffradikal, ein unsubstituiertes oder mit Hydroxyl, Carboxyl oder anderweitig funktionell substituiertes geradkettiges, verzweigtes oder cyclisches C1-C10-Alkylradikal bedeuten.
Gewebe nach Anspruch 1, wobei die Wet-out-Zeit etwa 8 Sekunden oder weniger beträgt. Gewebe nach Anspruch 1, wobei die Wet-out-Zeit etwa 6 Sekunden oder weniger beträgt. Gewebe nach Anspruch 1, wobei die Wet-out-Zeit etwa 5 Sekunden oder weniger beträgt. Gewebe nach Anspruch 1, wobei die Wet-out-Zeit etwa 4 bis etwa 6 Sekunden beträgt. Gewebe nach einem der Ansprüche 1 bis 5 mit etwa 1 bis etwa 10 Trockengewichtsprozent des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans. Gewebe nach einem der Ansprüche 1 bis 5 mit etwa 1 bis etwa 5 Trockengewichtsprozent des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans. Gewebe nach einem der Ansprüche 1 bis 5 mit etwa 2 bis etwa 5 Trockengewichtsprozent des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans. Gewebe nach einem der Ansprüche 1 bis 8, bei dem das Verhältnis der Wet-out-Zeit zur Zugabemenge des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans etwa 3 Sekunden pro Gewichtsprozent oder weniger beträgt. Gewebe nach einem der Ansprüche 1 bis 8, bei dem das Verhältnis der Wet-out-Zeit zur Zugabemenge des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans etwa 2 Sekunden pro Gewichtsprozent oder weniger beträgt. Gewebe nach einem der Ansprüche 1 bis 8, bei dem das Verhältnis der Wet-out-Zeit zur Zugabemenge des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans etwa 1 bis etwa 3 Sekunden pro Gewichtsprozent oder weniger beträgt. Gewebe nach einem der Ansprüche 1 bis 11, bei dem das Verhältnis der differenziellen Wet-out-Zeit zur Zugabemenge des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans etwa 2 Sekunden pro Gewichtsprozent oder weniger beträgt. Gewebe nach einem der Ansprüche 1 bis 11, bei dem das Verhältnis der differenziellen Wet-out-Zeit zur Zugabemenge des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans etwa eine Sekunde pro Gewichtsprozent oder weniger beträgt. Gewebe nach einem der Ansprüche 1 bis 11, bei dem das Verhältnis der differenziellen Wet-out-Zeit zur Zugabemenge des hydrophil modifizierten aminofunktionellen Polydimethylsiloxans etwa 0,5 Sekunden pro Gewichtsprozent oder weniger beträgt. Gewebe nach einem der Ansprüche 1 bis 14, wobei das Gewebe ein nicht gekrepptes durchgetrocknetes Gewebe ist. Gewebe nach einem der Ansprüche 1 bis 15, wobei beide Seiten des Gewebes mit dem gleichen hydrophil modifizierten aminofunktionellen Polydimethylsiloxan bedruckt sind. Gewebe nach einem der Ansprüche 1 bis 15, wobei das hydrophil modifizierte aminofunktionelle Polydimethylsiloxan, dass auf eine Seite des Gewebes gedruckt ist, sich von dem hydrophil modifizierten aminofunktionellen Polydimethylsiloxan, dass auf die andere Seite des Gewebes gedruckt ist, unterscheidet. Gewebe nach einem der Ansprüche 1 bis 17, wobei das hydrophil modifizierte aminofunktionelle Polydimethylsiloxan die folgende Struktur hat: Gewebe nach einem der Ansprüche 1 bis 17, wobei das hydrophil modifizierte aminofunktionelle Polydimethylsiloxan die folgende Struktur hat: Gewebe nach einem der Ansprüche 1 bis 17, wobei das hydrophil modifizierte aminofunktionelle Polydimethylsiloxan die folgende Struktur hat: Gewebe nach einem der Ansprüche 1 bis 17, wobei das hydrophil modifizierte aminofunktionelle Polydimethylsiloxan die folgende Struktur hat: Gewebe nach einem der Ansprüche 1 bis 17, wobei das hydrophil modifizierte aminofunktionelle Polydimethylsiloxan die folgende Struktur hat:
Anspruch[en]
A tissue having a Wet Out Time of about 10 seconds or less and containing from about 0.5 to about 15 dry weight percent of a hydrophilically-modified amino-functional polydimethylsiloxane having the following structure: wherein: X is hydrogen, hydroxy, amino, C1-C8 straight chain, branched, cyclic, unsubstituted or hydrophilically substituted alkyl or alkoxyl radical; m = 20-100,000; p = 1-5000; q = 0-5000; R1 = a C1-C6, straight chain, branched or cyclic alkyl radical; R2 = a C1-C10 straight chain or branched, substituted or unsubstituted alkylene diradical; wherein R5 is an unsubstituted or a hydrophilically substituted C1-C10 alkylene diradical; r = 1-10,000; s = 0-10,000; and Z = hydrogen, C1-C24 alkyl group, or a G-group, where G is selected from the following: -R6COOR7; -CONR8R9; -SO3R8; and PO R8R9, where R6 is a substituted or unsubstituted C1-C6 alkylene diradical; R7, R8, and R9 are independently a hydrogen radical or a substituted or unsubstituted C1-C8 alkyl radical; and wherein R,o, R11, and R12 are independently an unsubstituted or a hydrophilically substituted C1-C8 alkylene diradical; t = 0-10,000; u = 0-10,000; w = 0- 10,000; and R13, R14 and R15 are independently a hydrogen radical, an unsubstituted or a hydroxyl, carboxyl or other functionally substituted C1-C10 straight chain, branched, or cyclic alkyl radical. The tissue of claim 1 wherein the Wet Out Time is about 8 seconds or less. The tissue of claim 1 wherein the Wet Out Time is about 6 seconds or less. The tissue of claim 1 wherein the Wet Out Time is about 5 seconds or less. The tissue of claim 1 wherein the Wet Out Time is from about 4 to about 6 seconds. The tissue of any one of claims 1 to 5 having from about 1 to about 10 dry weight percent of the hydrophilically-modified amino-functional polydimethylsiloxane. The tissue of any one of claims 1 to 5 having from about 1 to about 5 dry weight percent of the hydrophilically-modified amino-functional polydimethylsiloxane. The tissue of any one of claims 1 to 5 having from about 2 to about 5 dry weight percent of the hydrophilically-modified amino-functional polydimethylsiloxane. The tissue of any one of claims 1 to 8 wherein the ratio of the Wet Out Time to the add-on amount of the hydrophilically-modified amino-functional polydimethylsiloxane is about 3 seconds per weight percent or less. The tissue of any one of claims 1 to 8 wherein the ratio of the Wet Out Time to the add-on amount of the hydrophilically modified amino-functional polydimethylsiloxane is about 2 seconds per weight percent or less. The tissue of any one of claims 1 to 8 wherein the ratio of the Wet Out Time to the add-on amount of the hydrophilically-modified amino-functional polydimethylsiloxane is from about 1 to about 3 seconds per weight percent or less. The tissue of any one of claims 1 to 11 wherein the ratio of the Differential Wet Out Time to the add-on amount of the hydrophilically-modified amino-functional polydimethylsiloxane is about 2 seconds per weight percent or less. The tissue of any one of claims 1 to 11 wherein the ratio of the Differential Wet Out Time to the add-on amount of the hydrophilically-modified amino-functional polydimethylsiloxane is about 1 second per weight percent or less. The tissue of any one of claims 1 to 11 wherein the ratio of the Differential Wet Out Time to the add-on amount of the hydrophilically-modified amino-functional polydimethylsiloxane is about 0.5 second per weight percent or less. The tissue of any one of claims 1 to 14 wherein the tissue is an uncreped throughdried tissue. The tissue of any one of claims 1 to 15 wherein both sides of the tissue are printed with the same hydrophilically-modified amino-functional polydimethylsiloxane. The tissue of any one of claims 1 to 15 wherein the hydrophilically-modified amino-functional polydimethylsiloxane printed on one side of the tissue is different than the hydrophilically-modified amino-functional polydimethylsiloxane printed on the other side of the tissue. The tissue of any one of claims 1 to 17 wherein the hydrophilically-modified amino-functional polydimethylsiloxane has the following structure: The tissue of any one of claims 1 to 17 wherein the hydrophilically-modified amino-functional polydimethylsiloxane has the following structure: The tissue of any one of claims 1 to 17 wherein the hydrophilically-modified amino-functional polydimethylsiloxane has the following structure: The tissue of any one of claims 1 to 17 wherein the hydrophilically-modified amino-functional polydimethylsiloxane has the following structure: The tissue of any one of claims 1 to 17 wherein the hydrophilically-modified amino-functional polydimethylsiloxane has the following structure:
Anspruch[fr]
Papier mousseline ayant un Temps pour arriver à Saturation d'environ 10 secondes ou moins et contenant d'environ 0,5 à environ 15 % en poids sec d'un polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile et ayant la structure suivante : dans laquelle : X représente l'hydrogène, hydroxy, amino, alkyle ou alkoxy en C1-C8, à chaîne droite, ramifiée, cyclique, non substituée ou substituée pour la rendre hydrophile ; m = 20-100 000 ; p = 1-5000 ; q = 0-5000 ; R1=alkyle en C1-C6, à chaîne droite, ramifiée ou cyclique ; R2 = diradical alkylène en C1-C10, à chaîne droite ou ramifiée, substituée ou non substituée ; où R5 est un diradical alkylène en C1-C10 non substitué ou substitué pour le rendre hydrophile; r = 1-10 000 ; s = 0-10 000 ; et Z = hydrogène, alkyle en C1-C24, ou un groupe G où G est sélectionné parmi les groupes suivants : -R6COOR7; -CONR8R9; -SO3R8; et POR8R9 où R6 est un diradical alkylène en C1-C6 substitué ou non substitué; R7, R8 et R9 représentent indépendamment un radical hydrogène ou un radical alkyle en C1-C8 substitué ou non substitué ; et où R10, R11 et R12 représentent indépendamment un diradical alkylène en C1-C8 non substitué ou substitué pour le rendre hydrophile ; t = 0-10 000 ; u = 0-10 000 ; w = 0-10 000 ; et R13, R14 et R15 représentent indépendamment un radical hydrogène ou un radical alkyle en C1-C10, à chaîne droite, ramifiée ou cyclique, non substituée ou substituée par hydroxy, carbonyle ou une autre fonctionnalité. Papier mousseline selon la revendication 1, dans lequel le Temps pour arriver à Saturation est d'environ 8 secondes ou moins. Papier mousseline selon la revendication 1, dans lequel le Temps pour arriver à Saturation est d'environ 6 secondes ou moins. Papier mousseline selon la revendication 1, dans lequel le Temps pour arriver à Saturation est d'environ 5 secondes ou moins. Papier mousseline selon la revendication 1, dans lequel le Temps pour arriver à Saturation est compris entre environ 4 secondes et environ 6 secondes. Papier mousseline selon l'une quelconque des revendications 1 à 5, renfermant d'environ 1 à environ 10 % en poids sec du polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile. Papier mousseline selon l'une quelconque des revendications 1 à 5, renfermant d'environ 1 à environ 5 % en poids sec du polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile. Papier mousseline selon l'une quelconque des revendications 1 à 5, renfermant d'environ 2 à environ 5 % en poids sec du polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile. Papier mousseline selon l'une quelconque des revendications 1 à 8, dans lequel le rapport entre le Temps pour arriver à Saturation et la quantité ajoutée de polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile est d'environ 3 secondes par pourcent pondéral ou moins. Papier mousseline selon l'une quelconque des revendications 1 à 8, dans lequel le rapport entre le Temps pour arriver à Saturation et la quantité ajoutée de polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile est d'environ 2 secondes par pourcent pondéral ou moins. Papier mousseline selon l'une quelconque des revendications 1 à 8, dans lequel le rapport entre le Temps pour arriver à Saturation et la quantité ajoutée de polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile est comprise entre environ 1 et environ 3 secondes par pourcent pondéral ou moins. Papier mousseline selon l'une quelconque des revendications 1 à 11, dans lequel le rapport entre la Différence de Temps pour arriver à Saturation et la quantité ajoutée de polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile est d'environ 2 secondes par pourcent pondéral ou moins. Papier mousseline selon l'une quelconque des revendications 1 à 11, dans lequel le rapport entre la Différence de Temps pour arriver à Saturation et la quantité ajoutée de polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile est d'environ 1 seconde par pourcent pondéral ou moins. Papier mousseline selon l'une quelconque des revendications 1 à 11, dans lequel le rapport entre la Différence de Temps pour arriver à Saturation et la quantité ajoutée de polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile est d'environ 0,5 seconde par pourcent pondéral ou moins. Papier mousseline selon l'une quelconque des revendications 1 à 14, dans lequel le papier mousseline est un papier mousseline séché par soufflage transversal et non crêpé. Papier mousseline selon l'une quelconque des revendications 1 à 15, dans lequel les deux faces du papier mousseline sont imprimées avec le même polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile. Papier mousseline selon l'une quelconque des revendications 1 à 15, dans lequel le polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile qui est imprimé sur une face du papier mousseline est différent du polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile, imprimé sur l'autre face du papier mousseline. Papier mousseline selon l'une quelconque des revendications 1 à 17, dans lequel le polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile a la structure suivante: Papier mousseline selon l'une quelconque des revendications 1 à 17, dans lequel le polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile a la structure suivante: Papier mousseline selon l'une quelconque des revendications 1 à 17, dans lequel le polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile a la structure suivante : Papier mousseline selon l'une quelconque des revendications 1 à 17, dans lequel le polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile a la structure suivante: Papier mousseline selon l'une quelconque des revendications 1 à 17, dans lequel le polydiméthylsiloxane amino-fonctionnel modifié pour le rendre hydrophile a la structure suivante :






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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