US4528316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Creping adhesives containing polyvinyl alcohol and cationic polyamide resins
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1984-10-18
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Granted: 1985-07-09
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Expires: 2004-10-18
Abstract
Abstract A creping adhesive comprising an aqueous admixture of polyvinyl alcohol and a water-soluble, thermosetting, cationic polyamide resin provides increased adhesion in the manufacture of creped wadding.
Inventors
- 👤 Dave A. Sorens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:15
CPC Classifications
C; C09; C09J; C09J177/00; C09J129/00; C09J129/02; C09J129/04; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/36; D21H17/46; D21H17/54; D21H17/55; D21H21/00; D21H21/14; D21H21/146; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/14; C08L77/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
An aqueous admixture consisting essentially of water, polyvinyl alcohol, and a water-soluble, thermosetting, cationic polyamide resin which is phase-compatible with the polyvinyl alcohol, said cationic polyamide resin comprising the reaction product of an epihalohydrin and a polyamide containing the recurring group --NH(C.sub.n H.sub.2n HN).sub.x --CORCO-- wherein n and x are each 2 or more and R is a saturated aliphatic chain having 3-10 carbon atoms, said admixture containing from about 96 to about 99.9 weight percent water.
Claim 2
Dependent Claim
77 words
An aqueous admixture consisting essentially of water, polyvinyl alcohol, and a water-soluble, thermosetting, cationic polyamide resin which is phase-compatible with the polyvinyl alcohol, said cationic polyamide resin comprising the reaction product of an epihalohydrin and a polyamide containing the recurring group --NH(C.sub.n H.sub.2n HN).sub.x --CORCO-- wherein n and x are each 2 or more and R is a saturated aliphatic chain having 3-10 carbon atoms, said admixture containing from about 96 to about 99.9 weight percent water.
Claim 3
Dependent Claim
32 words
The admixture of claim 1 consisting essentially of about 70 to about 95 dry weight percent polyvinyl alcohol and about 5 to about 30 dry weight percent of said cationic polyamide resin.
Claim 4
Dependent Claim
10 words
The admixture of claim 2 wherein the epihalohydrin is epichlorohydrin.
Claim 5
Dependent Claim
139 words
An aqueous admixture, useful as a creping adhesive, containing from about 96 to about 99.9 weight percent water, from about 30 to about 90 weight percent polyvinyl alcohol, and from about 10 to about 70 weight percent of a water-soluble, thermosetting, cationic polyamide resin which is phase-compatible with the polyvinyl alcohol, said cationic polyamide resin comprising the water-soluble reaction product of an epihalohydrin and a polyamide containing secondary amine groups, the ratio of the epihalohydrin to secondary amine groups of said polyamide being from about 0.5:1 to about 1.8:1, said polyamide being obtained by heating together at a temperature of from about 110° C. to about 250° C. a C 3 -C 10 saturated aliphatic dibasic carboxylic acid and a polyalkylene polyamine in a mole ratio of polyalkylene polyamine to dibasic acid of from about 0.8:1 to about 1.4:1.
Claim 6
Dependent Claim
139 words
An aqueous admixture, useful as a creping adhesive, containing from about 96 to about 99.9 weight percent water, from about 30 to about 90 weight percent polyvinyl alcohol, and from about 10 to about 70 weight percent of a water-soluble, thermosetting, cationic polyamide resin which is phase-compatible with the polyvinyl alcohol, said cationic polyamide resin comprising the water-soluble reaction product of an epihalohydrin and a polyamide containing secondary amine groups, the ratio of the epihalohydrin to secondary amine groups of said polyamide being from about 0.5:1 to about 1.8:1, said polyamide being obtained by heating together at a temperature of from about 110° C. to about 250° C. a C 3 -C 10 saturated aliphatic dibasic carboxylic acid and a polyalkylene polyamine in a mole ratio of polyalkylene polyamine to dibasic acid of from about 0.8:1 to about 1.4:1.
Claim 7
Dependent Claim
11 words
The aqueous admixture of claim 4 wherein the halohydrin is epichlorohydrin.
Claim 8
Dependent Claim
44 words
The aqueous admixture of claim 5 containing from about 0.1 to about 4 weight percent solids, of which solids from about 70 to about 95 weight percent is polyvinyl alcohol and from about 5 to about 30 weight percent is the cationic polyamide resin.
Claim 9
Dependent Claim
28 words
The aqueous admixture of claim 6 containing about 99.9 weight percent water, about 0.08 weight percent polyvinyl alcohol, and about 0.02 weight percent of the cationic polyamide resin.
Claim 10
Dependent Claim
16 words
The aqueous admixture of claim 7 wherein the saturated aliphatic dibasic carboxylic acid is adipic acid.
Claim 11
Dependent Claim
12 words
The aqueous admixture of claim 8 wherein the polyalkylene polyamine is diethylenetriamine.
References Cited (Backward Citations)
US3980605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |