Patent US4432833A successfully refreshed from Google Patents.
US4432833A
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Pulp containing hydrophilic debonder and process for its application
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1982-02-25
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Granted: 1984-02-21
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Expires: 2002-02-25
Abstract
Abstract The invention provides a cellulosic pulp having reduced interfiber bonding and therefore reduced physical strength while maintaining excellent hydrophilic properties. The pulp is produced by treating the cellulosic fibers with a hydrophilic debonder having the general formula: <IMAGE> wherein: R1=methyl, ethyl, propyl, hydrogen or hydroxyethyl, R2=methyl, ethyl, propyl or [ethylene oxide]n where N=1 to 50, R3=aliphatic chain of at least 4 carbon atoms, R4=[ethylene oxide]n or [propylene oxide]n with N=1 to 50, X-Cl, I, Br, SO4-, PO4--, CH3CO2.
Inventors
- 👤 John A. Breese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:16
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/20; D; D21; D21C; D21C9/00; D21C9/001; D21C9/002; D21C9/005
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
A wood pulp consisting essentially of a hydrophilic debonder having the general formula: ##STR5## wherein: R 1 =methyl, ethyl, propyl, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon items, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, SO 4 , PO 4 , CH 3 CO 2 said debonder present at the level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
Claim 2
Dependent Claim
100 words
A wood pulp consisting essentially of a hydrophilic debonder having the general formula: ##STR5## wherein: R 1 =methyl, ethyl, propyl, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon items, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, SO 4 , PO 4 , CH 3 CO 2 said debonder present at the level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
Claim 3
Dependent Claim
144 words
A process for treating cellulose pulp fibers to reduce interfiber bonding while preserving the hydrophilicity of the pulp comprising adding to a cellulose pulp fiber slurry prior to or during the formation of the slurry into a web a debonder consisting essentially of quaternary ammonium compound having the formula: ##STR6## wherein: R 1 =methyl, ethyl, propylene, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon atoms, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, SO 4 , PO 4 , CH 3 CO 2 and forming and drying said web, said quaternary ammonium compound added at a level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
Claim 4
Dependent Claim
144 words
A process for treating cellulose pulp fibers to reduce interfiber bonding while preserving the hydrophilicity of the pulp comprising adding to a cellulose pulp fiber slurry prior to or during the formation of the slurry into a web a debonder consisting essentially of quaternary ammonium compound having the formula: ##STR6## wherein: R 1 =methyl, ethyl, propylene, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon atoms, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, SO 4 , PO 4 , CH 3 CO 2 and forming and drying said web, said quaternary ammonium compound added at a level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
Claim 5
Dependent Claim
29 words
The process according to claim 2 wherein the quaternary ammonium compound applied to the fibers is from about 0.05% to 5.0% based on the dry weight of the cellulose.
Claim 6
Dependent Claim
26 words
The process according to claim 2 in which the quaternary ammonium compound is added by spraying a solution thereof on the web and drying the web.
Claim 7
Dependent Claim
26 words
The process according to claim 2 wherein the quaternary ammonium compound is added to the slurry of cellulosic pulp fibers and the pulp is subsequently dried.
Claim 8
Dependent Claim
15 words
A process according to claim 2 in which the web is fiberized into cellulose fluff.
Claim 9
Dependent Claim
25 words
A process according to claim 2 in which the quaternary ammonium compound is added during formation of the cellulose pulp fiber slurry into a web.
Claim 10
Dependent Claim
10 words
An absorbent fluff containing the hydrophilic debonder of claim 1.
Claim 11
Dependent Claim
109 words
A diaper containing an absorbent fluff with a hydrophilic debonder said debonder consisting essentially of a compound having the general formula: ##STR7## wherein: R 1 =methyl, ethyl, propyl, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon atoms, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, SO 4 , PO 4 , CH 3 CO 2 said debonder being present at the level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
Claim 12
Dependent Claim
109 words
A diaper containing an absorbent fluff with a hydrophilic debonder said debonder consisting essentially of a compound having the general formula: ##STR7## wherein: R 1 =methyl, ethyl, propyl, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon atoms, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, SO 4 , PO 4 , CH 3 CO 2 said debonder being present at the level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
Claim 13
Dependent Claim
106 words
An absorbent cellulosic based sheet stock with a hydrophilic debonder said debonder consisting essentially of the general formula: ##STR8## wherein: R 1 =methyl, ethyl, propyl, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon atoms, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, So 4 , PO 4 , CH 3 CO 2 said debonder being present at the level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
Claim 14
Dependent Claim
106 words
An absorbent cellulosic based sheet stock with a hydrophilic debonder said debonder consisting essentially of the general formula: ##STR8## wherein: R 1 =methyl, ethyl, propyl, hydrogen or hydroxyethyl, R 2 =methyl, ethyl, propyl or (ethylene oxide) n where n=1 to 50, R 3 =aliphatic chain of at least 4 carbon atoms, R 4 =(ethylene oxide) n or (propylene oxide) n with n=1 to 50, X=Cl, I, Br, So 4 , PO 4 , CH 3 CO 2 said debonder being present at the level of 0.1% to 5.0% by weight of the dry cellulosic material in an amount sufficient to increase the water and/or urine absorbency.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |