US4336344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of thermosettable resins and polydiene rubbers having improved solution stability
Assignee: Dow Chemical Co
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Filing: 1981-08-24
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Granted: 1982-06-22
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Expires: 2001-08-24
Abstract
Abstract The stability to phase separate solutions of unsaturated polyesters, vinyl ester resins or mixtures thereof and an elastomeric additive is improved by the use of a compatibilizing agent which is the ester of a carboxyl terminated diene polymer and a polyoxyalkylene.
Inventors
- 👤 Laurence J. Craigie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:50
CPC Classifications
C; C08; C08L; C08L13/00; C08L63/00; C08L63/10; C08L67/00; C08L67/06; C08L53/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
69 words
In a thermosettable resin composition comprising (a) a resin selected from the group consisting of an unsaturated polyester, a vinyl ester resin and a mixture thereof and (b) a carboxyl terminated polydiene rubber, the improvement wherein said composition includes as a compatibilizing agent a triblock polymer which has an elastomeric central block of the same carboxyl terminated polydiene rubber as (b) with the side blocks being a polyoxyalkylene ether.
Claim 2
Dependent Claim
69 words
In a thermosettable resin composition comprising (a) a resin selected from the group consisting of an unsaturated polyester, a vinyl ester resin and a mixture thereof and (b) a carboxyl terminated polydiene rubber, the improvement wherein said composition includes as a compatibilizing agent a triblock polymer which has an elastomeric central block of the same carboxyl terminated polydiene rubber as (b) with the side blocks being a polyoxyalkylene ether.
Claim 3
Dependent Claim
38 words
The composition of claim 1 wherein said unsaturated polyester is the water-insoluble reaction product of at least one polyol and at least one polycarboxylic acid of which at least a substantial portion is an αβ-ethylenically unsaturated dicarboxylic acid.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said dicarboxylic acid is maleic acid.
Claim 5
Dependent Claim
26 words
The composition of claim 1 wherein said vinyl ester resin is the reaction product of about equivalent amounts of a polyepoxide and an unsaturated monocarboxylic acid.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein said polyepoxide is the diglycidyl ether of bisphenol A.
Claim 7
Dependent Claim
12 words
The composition of claim 4 wherein said carboxylic acid is methacrylic acid.
Claim 8
Dependent Claim
14 words
The composition of claim 1 wherein said diene polymer is a carboxyl terminated polybutadiene.
Claim 9
Dependent Claim
26 words
The composition of claim 1 wherein said diene polymer is a carboxyl terminated copolymer of at least 30 weight percent butadiene with the remainder as acrylonitrile.
Claim 10
Dependent Claim
18 words
The composition of claim 1 wherein said polyoxyalkylene ether has a molecular weight of between 200 and 4,000.
Claim 11
Dependent Claim
18 words
The composition of claim 1 wherein said polyoxyalkylene ether is a copolymer of ethylene oxide and propylene oxide.
Claim 12
Dependent Claim
17 words
The composition of claim 1 wherein said polyoxyalkylene ether is a monoallyl ether of a polyoxyethylene ether.
Claim 13
Dependent Claim
15 words
The composition of claim 1 wherein said composition contains a monomer copolymerizable with said resin.
Claim 14
Dependent Claim
10 words
The composition of claim 12 wherein said monomer is styrene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |