Patent US4126739A successfully refreshed from Google Patents.
US4126739A
Expired / Lapsed
US
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Copolymers, having a uniform structure, of cyclic dienes and their use
Assignee: BASF SE
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Filing: 1977-11-21
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Granted: 1978-11-21
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Expires: 1997-11-21
Abstract
Abstract Copolymers, having a uniform structure, of cyclic dienes are obtained by heating a mixture of from 35 to 96% by weight of cyclopentadiene, dicyclopentadiene and/or methyldicyclopentadiene, which may or may not be partially replaced by methylcyclopentadiene or tricyclopentadiene or methyltricyclopentadiene, from 1 to 30% by weight of maleic anhydride, maleic acid or a monoalkyl maleate, which maleic acid or maleic acid derivatives may be partially replaced by other α,β-olefinically unsaturated monocarboxylic acids or dicarboxylic acids of 3 to 5 carbon atoms, and from 3 to 45% by weight of one or more vinyl-aromatics to 230°-320° C, during which heating the mixture does not remain at from 30° to 230° C for more than 5 hours, and preferably for not more than 2 hours. The copolymers may be used as binders for printing inks and coatings, and as additives in adhesives.
Inventors
- 👤 Richard Hoene
- 👤 Heinz-Hilmar Bankowsky
- 👤 Eduard Hartmann
- 👤 Hans-Uwe Schenck
- 👤 Paul Boerzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106; C08; C08F; C08F232/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
Copolymers, having a uniform structure, of cyclic dienes, which copolymers have been obtained by heating a mixture of (A) from 35 to 96% by weight of one or more compounds selected from the group comprising cyclopentadiene, dicyclopentadiene, methyldicyclopentadiene, methylcyclopentadiene, tricyclopentadiene and methyltricyclopentadiene, (B) from 1 to 30% by weight of maleic anhydride, maleic acid or a monoalkyl maleate and (C) from 3 to 45% by weight of one or more vinyl-aromatics, the sum of the percentages of (A), (B) and (C) amounting to 100, to 230°-320° C., in the course of which heating the mixture does not remain for more than 5 hours at from 30° to 230° C.
Claim 2
Dependent Claim
109 words
Copolymers, having a uniform structure, of cyclic dienes, which copolymers have been obtained by heating a mixture of (A) from 35 to 96% by weight of one or more compounds selected from the group comprising cyclopentadiene, dicyclopentadiene, methyldicyclopentadiene, methylcyclopentadiene, tricyclopentadiene and methyltricyclopentadiene, (B) from 1 to 30% by weight of maleic anhydride, maleic acid or a monoalkyl maleate and (C) from 3 to 45% by weight of one or more vinyl-aromatics, the sum of the percentages of (A), (B) and (C) amounting to 100, to 230°-320° C., in the course of which heating the mixture does not remain for more than 5 hours at from 30° to 230° C.
Claim 3
Dependent Claim
39 words
Copolymers, having a uniform structure, as claimed in claim 1, wherein the maleic acid or maleic acid derivative of component (B) is partially replaced by other α,β-olefinically unsaturated monocarboxylic acids or dicarboxylic acids of 3 to 5 carbon atoms.
Claim 4
Dependent Claim
15 words
Copolymers, having a uniform structure, as claimed in claim 1, wherein component (C) is styrene.
Claim 5
Dependent Claim
15 words
Copolymers, having a uniform structure, as claimed in claim 2, wherein component (C) is styrene.
Claim 6
Dependent Claim
37 words
Copolymers, having a uniform structure, as claimed in claim 1, wherein the mixture of (A), (B) and (C), on heating to 230°-320° C., does not remain for more than 2 hours at from 30° to 230° C.
Claim 7
Dependent Claim
28 words
Copolymers, having a uniform structure, as claimed in claim 1, which have melting points of from 80° to 300° C. and iodine numbers of from 30 to 120.
Claim 8
Dependent Claim
28 words
Copolymers, having a uniform structure, as claimed in claim 2, which have melting points of from 80° to 300° C. and iodine numbers of from 30 to 120.
Claim 9
Dependent Claim
29 words
Copolymers, having a uniform structure, as claimed in claim 1, which have molecular weights of from 400 to 2,000 and are soluble in hydrocarbons and/or in natural drying oils.
Claim 10
Dependent Claim
29 words
Copolymers, having a uniform structure, as claimed in claim 2, which have molecular weights of from 400 to 2,000 and are soluble in hydrocarbons and/or in natural drying oils.
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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |