US4294737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble epoxy ester copolymers for interior can use
Assignee: DeSoto Inc
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Filing: 1980-05-27
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Granted: 1981-10-13
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Expires: 2000-05-27
Abstract
Abstract Epoxy ester copolymer dispersible in water with the aid of an amine, which may be ammonia, is provided by esterifying a polyepoxide having a 1,2-epoxy equivalency in excess of 1.0 and a molecular weight of from 350 to 8000 with at least 0.5% of the weight of the copolymer of a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization. This polyepoxide ester is copolymerized with from 15% to 70% of monoethylenic monomers, based on the weight of the copolymer, these monoethylenic monomers including carboxyl functional monomer providing an acid number of from 20-150 in the copolymer.
Inventors
- 👤 Kazys Sekmakas
- 👤 Raj Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:38
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08F; C08F299/00; C08F299/02; C08F299/026
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
An aqueous dispersion comprising water having dispersed therein in the form of a salt with an amine an epoxy ester copolymer comprising a polyepoxide having a 1,2-epoxy equivalency in excess of 1.0 and a molecular weight of from 350 to 8000 esterified with at least about 0.5% of the copolymer of a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization, said polyepoxide ester being copolymerized with from 15% to 70% of monoethylenic monomers, based on the weight of the copolymer, and said monoethylenic monomers including carboxy functional monomer providing an acid number of from 20-150 in the copolymer.
Claim 2
Dependent Claim
105 words
An aqueous dispersion comprising water having dispersed therein in the form of a salt with an amine an epoxy ester copolymer comprising a polyepoxide having a 1,2-epoxy equivalency in excess of 1.0 and a molecular weight of from 350 to 8000 esterified with at least about 0.5% of the copolymer of a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization, said polyepoxide ester being copolymerized with from 15% to 70% of monoethylenic monomers, based on the weight of the copolymer, and said monoethylenic monomers including carboxy functional monomer providing an acid number of from 20-150 in the copolymer.
Claim 3
Dependent Claim
38 words
An aqueous dispersion as recited in claim 1 in which said polyepoxide is a diglycidyl ether of a bisphenol having a 1,2-epoxy equivalency of from 1.4 to 2.0 and an average molecular weight of from 1500 to 5000.
Claim 4
Dependent Claim
25 words
An aqueous dispersion as recited in claim 1 in which said monoester is the reaction product of C 2 -C 8 alcohol with maleic anhydride.
Claim 5
Dependent Claim
15 words
An aqueous dispersion as recited in claim 3 in which said monoester is monobutyl maleate.
Claim 6
Dependent Claim
34 words
An aqueous dispersion as recited in claim 1 in which said monoester is used in an amount of at least 50% of the stoichiometric amount with respect to the epoxy functionality in said polyepoxide.
Claim 7
Dependent Claim
33 words
An aqueous dispersion as recited in claim 1 in which said monoester is used in an amount of at least 1% of the copolymer and at least 50% of said monomers are nonreactive.
Claim 8
Dependent Claim
19 words
An aqueous dispersion as recited in claim 6 in which said nonreactive monomers consist of styrene and vinyl toluene.
Claim 9
Dependent Claim
21 words
An aqueous dispersion as recited in claim 1 in which said copolymer has an acid number of from 50 to 120.
Claim 10
Dependent Claim
14 words
An aqueous dispersion as recited in claim 1 in which said amine is ammonia.
Claim 11
Dependent Claim
103 words
An aqueous dispersion comprising water having dispersed therein with the aid of an amine an epoxy ester copolymer comprising a polyepoxide having a 1,2-epoxy equivalency of about 1.4 to about 2.0 and a molecular weight of from 350 to 8000 esterified to be substantially free of epoxy functionality with a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization, said polyepoxide ester being copolymerized with from 0.5% to 70% of monoethylenic monomers, based on the weight of the copolymer, and said monoethylenic monomers including carboxy functional monomer providing an acid number of from 20-150 in the copolymer.
Claim 12
Dependent Claim
103 words
An aqueous dispersion comprising water having dispersed therein with the aid of an amine an epoxy ester copolymer comprising a polyepoxide having a 1,2-epoxy equivalency of about 1.4 to about 2.0 and a molecular weight of from 350 to 8000 esterified to be substantially free of epoxy functionality with a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization, said polyepoxide ester being copolymerized with from 0.5% to 70% of monoethylenic monomers, based on the weight of the copolymer, and said monoethylenic monomers including carboxy functional monomer providing an acid number of from 20-150 in the copolymer.
Claim 13
Dependent Claim
14 words
An aqueous dispersion as recited in claim 10 in which said amine is ammonia.
References Cited (Backward Citations)
US4049744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |