US3941736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable aqueous dispersions of hydrocarbon resins and water soluble polyaminopolyamide-epichlorohydrin resin as dispersing agent
Assignee: Hercules LLC
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Filing: 1973-11-05
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Granted: 1976-03-02
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Expires: 1993-11-05
Abstract
Abstract Disclosed are essentially stable aqueous dispersions of hydrocarbon resins which consist essentially of at least one hydrocarbon resin in finely-divided form; a water-soluble cationic resin, a specific example of which is a water-soluble cationic aminopolyamide--epichlorohydrin resin; and water. The dispersion can be used to size paper.
Inventors
- 👤 Paul Harwood Aldrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:50
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35; C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C08J2357/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
179 words
An essentially stable aqueous hydrocarbon resin dispersion consisting essentially of, by weight, from about 5.5 parts to about 50 parts solids and from about 94.5 parts to about 50 parts water; the solids content consisting essentially of, by weight, (a) from about 5 parts to about 45 parts hydrocarbon resin particles and (b) from about 0.5 part to about 10 parts of a water-soluble cation polymeric dispersing agent, component (a) being a hydrocarbon resin from ethylenically unsaturated hydrocarbon monomers having a ring and ball softening point of from about 45°C. to about 150°C., a molecular weight of from about 350 to about 2000, and an acid number of less than about 1, component (b) being a water-soluble polyaminopolyamide--epichlorohydrin resin consisting essentially of the reaction product of an aminopolyamide and epichlorohydrin utilizing from about 1 mole to about 1.5 moles of epichlorohydrin for each amine group of the aminopolyamide, said aminopolyamide consisting essentially of the reaction product of a polyalkylenepolyamine and a dicarboxylic acid in a mole ratio of polyalkylenepolyamine to dicarboxylic acid of from about 0.8:1 to about 1.4:1.
Claim 2
Dependent Claim
179 words
An essentially stable aqueous hydrocarbon resin dispersion consisting essentially of, by weight, from about 5.5 parts to about 50 parts solids and from about 94.5 parts to about 50 parts water; the solids content consisting essentially of, by weight, (a) from about 5 parts to about 45 parts hydrocarbon resin particles and (b) from about 0.5 part to about 10 parts of a water-soluble cation polymeric dispersing agent, component (a) being a hydrocarbon resin from ethylenically unsaturated hydrocarbon monomers having a ring and ball softening point of from about 45°C. to about 150°C., a molecular weight of from about 350 to about 2000, and an acid number of less than about 1, component (b) being a water-soluble polyaminopolyamide--epichlorohydrin resin consisting essentially of the reaction product of an aminopolyamide and epichlorohydrin utilizing from about 1 mole to about 1.5 moles of epichlorohydrin for each amine group of the aminopolyamide, said aminopolyamide consisting essentially of the reaction product of a polyalkylenepolyamine and a dicarboxylic acid in a mole ratio of polyalkylenepolyamine to dicarboxylic acid of from about 0.8:1 to about 1.4:1.
Claim 3
Dependent Claim
38 words
The aqueous dispersion of claim 1 wherein (a) is present in an amount of from about 10 parts to about 40 parts and (b) is present in an amount of from about 1 part to about 8 parts.
Claim 4
Dependent Claim
44 words
The aqueous dispersion of claim 2 wherein (a) is a hydrocarbon resin having a ring and ball softening point of from about 50°C. to about 120°C., a molecular weight of from about 400 to about 1400, and an acid number less than about 1.
Claim 5
Dependent Claim
19 words
The aqueous dispersion of claim 3 wherein the polyaminopolyamide moiety of the resin is from adipic acid and diethylenetriamine.
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) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |