Patent US3989659A successfully refreshed from Google Patents.
US3989659A
Expired / Lapsed
US
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Water-dispersible thermosettable cationic resins and paper sized therewith
Assignee: Hercules LLC
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Filing: 1975-04-28
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Granted: 1976-11-02
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Expires: 1995-04-28
Abstract
Abstract Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketone dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.
Inventors
- 👤 Paul H. Aldrich
- 👤 David H. Dumas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:11
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/55; C; C08; C08G; C08G69/00; C08G69/48; D21H17/03; D21H17/05; D21H17/17; D21H17/57
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
159 words
A composition consisting essentially of an aqueous dispersion of a water-insoluble, water-dispersible thermosettable cationic resin derived by reacting (I) an epihalohydrin and (II) a water-insoluble modified aminopolyamide derived by reacting (a) a water-soluble long chain aminopolyamide derived by reaction of a polyalkylenepolyamine and a dicarboxylic acid, said aminopolyamide having recurring groups ##EQU1## wherein n is an integer 2 through 6, x is an integer 2 through 4, and R is a divalent hydrocarbon radical, and (b) an organic isocyanate having the formula R'NCO where R' is a hydrocarbon radical containing a total of from about 11 to about 39 carbon atoms, the amount of organic isocyanate employed being that sufficient to provide a modified aminopolyamide that is water-insoluble but insufficient to react with more than about 50% of the secondary amine groups of the aminopolyamide, the amount of epihalohydrin employed being at least that amount sufficient to react with substantially all the secondary amine groups of the modified aminopolyamide.
Claim 2
Dependent Claim
159 words
A composition consisting essentially of an aqueous dispersion of a water-insoluble, water-dispersible thermosettable cationic resin derived by reacting (I) an epihalohydrin and (II) a water-insoluble modified aminopolyamide derived by reacting (a) a water-soluble long chain aminopolyamide derived by reaction of a polyalkylenepolyamine and a dicarboxylic acid, said aminopolyamide having recurring groups ##EQU1## wherein n is an integer 2 through 6, x is an integer 2 through 4, and R is a divalent hydrocarbon radical, and (b) an organic isocyanate having the formula R'NCO where R' is a hydrocarbon radical containing a total of from about 11 to about 39 carbon atoms, the amount of organic isocyanate employed being that sufficient to provide a modified aminopolyamide that is water-insoluble but insufficient to react with more than about 50% of the secondary amine groups of the aminopolyamide, the amount of epihalohydrin employed being at least that amount sufficient to react with substantially all the secondary amine groups of the modified aminopolyamide.
Claim 3
Dependent Claim
149 words
A composition consisting essentially of an aqueous dispersion of a water-insoluble, water-dispersible thermosettable cationic resin derived by reacting (I) epichlorohydrin and (II) a water-insoluble modified aminopolyamide derived by reacting (a) a water-soluble long chain aminopolyamide derived by reaction of a polyalkylenepolyamine and a dicarboxylic acid, said aminopolyamide having recurring groups ##STR8## wherein n is an integer 2 through 6, x is an integer 2 through 4, and R is a divalent hydrocarbon radical, and (b) an organic isocyanate having the formula R'NCO where R' is a hydrocarbon radical containing a total of from about 15 to 35 carbon atoms, the amount of organic isocyanate employed being that sufficient to react with from about 10% to about 25% of the secondary amine groups of the aminopolyamide, the amount of epichlorohydrin employed being at least that amount sufficient to react with substantially all the secondary amine groups of the modified aminopolyamide.
Claim 4
Dependent Claim
149 words
A composition consisting essentially of an aqueous dispersion of a water-insoluble, water-dispersible thermosettable cationic resin derived by reacting (I) epichlorohydrin and (II) a water-insoluble modified aminopolyamide derived by reacting (a) a water-soluble long chain aminopolyamide derived by reaction of a polyalkylenepolyamine and a dicarboxylic acid, said aminopolyamide having recurring groups ##STR8## wherein n is an integer 2 through 6, x is an integer 2 through 4, and R is a divalent hydrocarbon radical, and (b) an organic isocyanate having the formula R'NCO where R' is a hydrocarbon radical containing a total of from about 15 to 35 carbon atoms, the amount of organic isocyanate employed being that sufficient to react with from about 10% to about 25% of the secondary amine groups of the aminopolyamide, the amount of epichlorohydrin employed being at least that amount sufficient to react with substantially all the secondary amine groups of the modified aminopolyamide.
Claim 5
Dependent Claim
20 words
The composition of claim 1 wherein the water-soluble long chain aminopolyamide is derived by reaction of diethylenetriamine and adipic acid.
Claim 6
Dependent Claim
20 words
The composition of claim 2 wherein the water-soluble long chain aminopolyamide is derived by reaction of diethylenetriamine and adipic acid.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |