Patent US4234381A successfully refreshed from Google Patents.
US4234381A
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US
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Fibrous material made with polymers stabilized by polymerizable vinyl benzyltrialkyl ammonium salt surfactant
Assignee: Rohm and Haas Co
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Filing: 1979-02-01
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Granted: 1980-11-18
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Expires: 1999-02-01
Abstract
Abstract An effective amount of a vinylbenzyltrialkylammonium salt, prepared from a vinylbenzyl halide and a tertiary amine, is polymerized with various other monomers to afford stable latex polymers which have the latex stabilizing surfactant incorporated into the polymer backbone. The use of a vinylbenzyltrialkylammonium salt lessens or avoids the usual problems associated with the conventional anionic, nonionic or cationic emulsifiers employed in aqueous polymerizations. The copolymers prepared with the quaternary ammonium compounds are useful as sizing agents, as extender/binders for cationic water repellents; in addition, the polymers are depositable on pulp without requiring any deposition aids or defoamers.
Inventors
- 👤 H. Scott Killam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:39
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/44; D21H17/45; D21H17/455
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
192 words
A sized fibrous product made by a method comprising the steps of applying a latex of an addition polymer of ethylenically unsaturated monomers to fibrous material, and curing the polymer, characterized in that the polymer has a molecular weight of between about 250,000 and 1,000,000, and is one which comprises 0.25 to 5.0% of the total polymer composition of a polymerized vinylbenzyltrialkyl ammonium salt having the formula: ##STR22## wherein R 1 is alkyl of from 8 to 22 carbon atoms and X.sup.⊖ is an anion, and which is emulsion copolymerized with one or more of monomers selected from: (a) a monomer of the formula: ##STR23## wherein R 2 is hydrogen or alkyl and R 3 is a straight chain, branched chain or cyclic alkyl, alkoxyalkyl, alkylthioalkyl, ureido, hydroxy lower alkyl, 2,3-epoxypropyl, amino lower alkyl, mono- or di- lower alkylamino, lower alkyl or hydroxyalkyl lower alkylamino lower alkyl, and (b) a monomer of the formula: ##STR24## wherein R 4 is hydrogen, methyl or halo and R 5 is hydrogen, halo, lower alkylanoyloxy, formyl, phenyl, N-hydroxyethyl, tolyl, methoxyethyl, 2,4-diamino-s-triazinyl, lower alkyl, or epoxy, said vinylbenzyltrialkyl ammonium salt being the sole surfactant in the latex.
Claim 2
Dependent Claim
192 words
A sized fibrous product made by a method comprising the steps of applying a latex of an addition polymer of ethylenically unsaturated monomers to fibrous material, and curing the polymer, characterized in that the polymer has a molecular weight of between about 250,000 and 1,000,000, and is one which comprises 0.25 to 5.0% of the total polymer composition of a polymerized vinylbenzyltrialkyl ammonium salt having the formula: ##STR22## wherein R 1 is alkyl of from 8 to 22 carbon atoms and X.sup.⊖ is an anion, and which is emulsion copolymerized with one or more of monomers selected from: (a) a monomer of the formula: ##STR23## wherein R 2 is hydrogen or alkyl and R 3 is a straight chain, branched chain or cyclic alkyl, alkoxyalkyl, alkylthioalkyl, ureido, hydroxy lower alkyl, 2,3-epoxypropyl, amino lower alkyl, mono- or di- lower alkylamino, lower alkyl or hydroxyalkyl lower alkylamino lower alkyl, and (b) a monomer of the formula: ##STR24## wherein R 4 is hydrogen, methyl or halo and R 5 is hydrogen, halo, lower alkylanoyloxy, formyl, phenyl, N-hydroxyethyl, tolyl, methoxyethyl, 2,4-diamino-s-triazinyl, lower alkyl, or epoxy, said vinylbenzyltrialkyl ammonium salt being the sole surfactant in the latex.
Claim 3
Dependent Claim
38 words
The sized product of claim 1 in which the fibrous material is in the form of paper pulp and, in the method, the latex is added to the pulp by a beater deposition procedure with no additional surfactant.
Claim 4
Dependent Claim
25 words
The sized product of claim 2 in which, in the method, no beater deposition aid is utilized other than that present in the polymer itself.
Claim 5
Dependent Claim
22 words
The sized product of claim 1 in which R is alkyl of from 12 to 18 carbon atoms and X.sup.⊖ is chloride.
Claim 6
Dependent Claim
13 words
The sized product of claim 1 in which the monomer is dimethylstearyl-4-vinylbenzylammonium chloride.
Claim 7
Dependent Claim
12 words
The sized product of claim 1 wherein the monomer is dimethyllauryl-4-vinylbenzylammonium chloride.
Claim 8
Dependent Claim
12 words
The sized product of claim 1 wherein the monomer is dimethylmyristyl-4-vinylbenzylammonium chloride.
Claim 9
Dependent Claim
15 words
The sized product of claim 1 in which the fibrous material is a non-woven fabric.
Claim 10
Dependent Claim
21 words
The sized product of claim 8 in which, in the method, to the latex is added a fluorocarbon water repellent composition.
References Cited (Backward Citations)
US2884057A
Cited
US3015605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |