US3720636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersion paints of copolymers of diesters of fumaric acid with vinyl compounds
Assignee: Wintershall Dea International AG
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Filing: 1970-09-24
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Granted: 1973-03-13
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Expires: 1990-09-24
Abstract
Abstract Dispersion paint compositions prepared by emulsioncopolymerization of fumaric acid esters of aliphatic alcohols with aliphatic and/or aromatic vinyl compounds, olefins or olefinic-unsaturated compounds.
Inventors
- 👤 J Wollner
- 👤 W Tietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:03
CPC Classifications
C; C08; C08F; C08F222/00; C08F222/10; C08F222/12; C08F222/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
An aqueous dispersion Paint composition prepared by aqueous emulsion-copolymerization of a monomeric mixture consisting essentially of the following: a. 50-90 parts by weight of a diester of fumaric acid with an alkanol of three to six carbons of the formula ROH where R is secondary alkyl of tertiary alkyl, b. 0-10 parts by weight of an alkene of from two to eight carbons, c. 3-25 parts by weight of a vinyl compound selected from the group consisting of styrene and acrylic acid ester of the formula: where R2 is hydrogen or alkyl of from one to five carbons and R3 is alkyl of from one to 20 carbons, d. 5-20 parts by weight diester of fumaric acid with a primary alcohol of from four to eight carbons.
Claim 2
Dependent Claim
127 words
An aqueous dispersion Paint composition prepared by aqueous emulsion-copolymerization of a monomeric mixture consisting essentially of the following: a. 50-90 parts by weight of a diester of fumaric acid with an alkanol of three to six carbons of the formula ROH where R is secondary alkyl of tertiary alkyl, b. 0-10 parts by weight of an alkene of from two to eight carbons, c. 3-25 parts by weight of a vinyl compound selected from the group consisting of styrene and acrylic acid ester of the formula: where R2 is hydrogen or alkyl of from one to five carbons and R3 is alkyl of from one to 20 carbons, d. 5-20 parts by weight diester of fumaric acid with a primary alcohol of from four to eight carbons.
Claim 3
Dependent Claim
28 words
A composition according to claim 1 wherein said composition consists of: 60 parts by weight di-sec.-butyl fumarate 20 parts by weight styrene 20 parts by weight di-n-octyl fumarate.
Claim 4
Dependent Claim
14 words
A composition according to claim 1 also containing 5-20 parts of an external plasticizer.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |