Patent US4414367A successfully refreshed from Google Patents.
US4414367A
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Curable molding compositions
Assignee: Union Carbide Corp
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Filing: 1981-09-30
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Granted: 1983-11-08
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Expires: 2001-09-30
Abstract
Abstract Described herein are curable liquid homogeneous mixtures used for the rapid production of fiber-reinforced thermoset resin articles which comprise: (a) a vinyl ester of the following formula: ##STR1## wherein the R's are independently hydrogen or methyl, R 1 is the residue of a cycloaliphatic or aromatic diol and n has an average value of from 1 to about 5. (b) a second crosslinkable oligomer containing two or more unsaturated groups selected from acrylates, methacrylates and fumarate diesters; and (c) a monoethylenically unsaturated monomer, wherein the ratio of (a) to (b) is greater than about 0.3.
Inventors
- 👤 Hugh C. Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:03
CPC Classifications
C; C08; C08L; C08L63/00; C08L63/10; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0485; C08L67/00; C08L67/06; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
92 words
A liquid homogeneous molding composition used for the rapid production of fiber-reinforced thermoset resin articles which composition comprises: (a) a vinyl ester of the following formula: ##STR6## wherein the R's are independently hydrogen or methyl, R 1 is the residue of a cycloaliphatic or aromatic diol and n has an average value of from 1 to about 5; (b) a second crosslinkable oligomer containing two or more unsaturated groups selected from acrylate, or methacrylates; and (c) a monoethylenically unsaturated monomer, wherein the weight ratio of (a) to (b) is greater than 0.3.
Claim 2
Dependent Claim
92 words
A liquid homogeneous molding composition used for the rapid production of fiber-reinforced thermoset resin articles which composition comprises: (a) a vinyl ester of the following formula: ##STR6## wherein the R's are independently hydrogen or methyl, R 1 is the residue of a cycloaliphatic or aromatic diol and n has an average value of from 1 to about 5; (b) a second crosslinkable oligomer containing two or more unsaturated groups selected from acrylate, or methacrylates; and (c) a monoethylenically unsaturated monomer, wherein the weight ratio of (a) to (b) is greater than 0.3.
Claim 3
Dependent Claim
30 words
A composition as defined in claim 1 wherein the vinyl ester resin is of the following formula: ##STR7## wherein n has an average value of from 1 to about 5.
Claim 4
Dependent Claim
58 words
A composition as defined in claim 1 wherein component (b) is a poly(acrylate) characterized by the following empirical formula: ##STR8## wherein R 3 is the hydroxyl-free residue of an organic polyhydric alcohol which contained alcoholic hydroxyl groups bonded to different carbon atoms, R 2 and R 4 are independently hydrogen or methyl, and c is 1 to 3.
Claim 5
Dependent Claim
15 words
A composition as defined in claim 1 wherein component (b) is an acrylated unsaturated polyester.
Claim 6
Dependent Claim
14 words
A composition as defined in claim 1 wherein the monoethylenically unsaturated monomer comprises styrene.
Claim 7
Dependent Claim
23 words
A composition as defined in claim 1 wherein component (a) is present in amounts of from about 7 to about 60 weight percent.
Claim 8
Dependent Claim
23 words
A composition as defined in claim 1 wherein component (b) is present in amounts of from about 5 to about 50 weight percent.
Claim 9
Dependent Claim
23 words
A composition as defined in claim 1 wherein component (c) is present in amounts of from about 20 to about 70 weight percent.
Claim 10
Dependent Claim
12 words
A composition as defined in claim 1 which contains a reinforcing fiber.
Claim 11
Dependent Claim
21 words
A composition as defined in claim 9 wherein the reinforcing fiber is selected from fiberglass, carbon fibers or aromatic polyamide fibers.
Claim 12
Dependent Claim
13 words
An article molded from the composition of claims 1 or 9 or 10.
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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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |