US4293686A
Expired / Lapsed
US
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Thermosetting polyester resin composition
Assignee: Union Carbide Corp
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Filing: 1980-04-18
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Granted: 1981-10-06
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Expires: 2000-04-18
Abstract
Abstract This invention comprises a polymerizable composition of a liquid mixture of (a) an unsaturated polyester, (b) a half ester characterized by the following empirical formula: ##STR1## wherein n is a number having an average value of about 1.5 to less than about 4, m is equal to the free valence of A less the average value of n, A is the hydroxyl-free residue of an organic polyol which contained from 2 to 4, inclusive, hydroxyl groups, OH, in formula (I), (c) maleic anhydride and (d) an ethylenically unsaturated monomer. This composition is suitable for use in the manufacture of fiber reinforced plastic compositions.
Inventors
- 👤 Hugh C. Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
85 words
A polymerizable composition comprising a mixture of: (a) an unsaturated polyester, (b) a half ester characterized by the following empirical formula: ##STR7## wherein n is a number having an average value of about 1.5 to less than about 4, m is equal to the free valence of A less the average value of n, A is the hydroxyl-free residue of an organic polyol which contained from 2 to 4, inclusive, hydroxyl groups, OH, in formula (I), (c) maleic anhydride and (d) an ethylenically unsaturated monomer.
Claim 2
Dependent Claim
85 words
A polymerizable composition comprising a mixture of: (a) an unsaturated polyester, (b) a half ester characterized by the following empirical formula: ##STR7## wherein n is a number having an average value of about 1.5 to less than about 4, m is equal to the free valence of A less the average value of n, A is the hydroxyl-free residue of an organic polyol which contained from 2 to 4, inclusive, hydroxyl groups, OH, in formula (I), (c) maleic anhydride and (d) an ethylenically unsaturated monomer.
Claim 3
Dependent Claim
28 words
A composition as defined in claim 1 wherein the unsaturated polyester is the condensation product of at least one diol and at least one difunctional acid or anhydride.
Claim 4
Dependent Claim
31 words
A composition as defined in claim 2 wherein the diol is selected from ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 2,2,4-trimethyl-1,3-pentanediol, 1,3-butanediol, neopentyl glycol, and the alkoxylated derivatives of bisphenol-A.
Claim 5
Dependent Claim
15 words
A composition as defined in claim 2 wherein the difunctional acid or anhydride contains unsaturation.
Claim 6
Dependent Claim
17 words
A composition as defined in claim 4 wherein the unsaturated acid is maleic acid or fumaric acid.
Claim 7
Dependent Claim
14 words
A composition as defined in claim 4 wherein the unsaturated anhydride is maleic anhydride.
Claim 8
Dependent Claim
23 words
A composition as defined in claim 2 wherein the difunctional acid or anhydride is a mixture of saturated and unsaturated acids and anhydrides.
Claim 9
Dependent Claim
23 words
A composition as defined in claim 7 wherein the saturated acid is selected from phthalic acid, isophthalic acid, terephthalic acid and adipic acid.
Claim 10
Dependent Claim
14 words
A composition as defined in claim 7 wherein the saturated anhydride is phthalic anhydride.
Claim 11
Dependent Claim
53 words
A composition as defined in claim 1 wherein the organic polyol is selected from 2,2-dimethyl-3-hydroxypropyl 2,2-dimethyl-3-hydroxypropionate, 2,2,4-trimethyl 1,3-pentanediol, propylene glycol, dipropylene glycol, the ethylene oxide and propylene oxide adducts of 2,2-bis(4-hydroxyphenyl)propane, and a polycaprolactone ester of a polyol wherein from about 1 to about 5 moles of caprolactone are esterified with the polyol.
Claim 12
Dependent Claim
16 words
A composition as defined in claim 1 wherein the organic polyol comprises a mixture of polyols.
Claim 13
Dependent Claim
13 words
A composition as in claim 11 wherein the mixture of polyols contains 2,2,4-trimethyl-1,3-pentanediol.
Claim 14
Dependent Claim
10 words
A composition as in claim 12 which contains propylene glycol.
Claim 15
Dependent Claim
29 words
A composition as in claim 12 which contains a polycaprolactone ester of a polyol wherein from about 1 to about 5 moles of caprolactone are esterified with the polyol.
Claim 16
Dependent Claim
25 words
A composition as in claim 14 which contains a polycaprolactone ester of trimethylol propane wherein about 3.6 moles of caprolactone are esterified with trimethylol propane.
Claim 17
Dependent Claim
14 words
A composition as in claim 11 wherein the mixture of polyols contains 2,2-dimethyl-3-hydroxypropyl 2,2-dimethyl-3-hydroxyproionate.
Claim 18
Dependent Claim
29 words
A composition as in claim 6 which contains a polycaprolactone ester of a polyol wherein from about 1 to about 5 moles of caprolactone are esterified with the polyol.
Claim 19
Dependent Claim
25 words
A composition as in claim 17 which contains the polycaprolactone ester of trimethylol propane where about 3.6 moles of caprolactone are esterified with trimethylol propane.
Claim 20
Dependent Claim
14 words
A composition as in claim 16 wherein the mixture of polyols contains dipropylene glycol.
Claim 21
Dependent Claim
17 words
A composition as in claim 11 wherein the mixture of polyols contains the 2-mole ethoxylate of 2,2-bis(4-hydroxyphenyl)propane.
Claim 22
Dependent Claim
13 words
A composition as in claim 20 wherein the mixture of polyols contains 2,2-dimethyl-1,3-propanediol.
Claim 23
Dependent Claim
17 words
A composition as in claim 11 wherein the mixture of polyols contains the 2-mole propoxylate of 2,2-bis(4-hydroxyphenyl)propane.
Claim 24
Dependent Claim
13 words
A composition as in claim 22 wherein the mixture of polyols contains 2,2-dimethyl-1,3-propanediol.
Claim 25
Dependent Claim
14 words
A composition as defined in claim 1 wherein the ethylenically unsaturated monomer is styrene.
Claim 26
Dependent Claim
24 words
A composition as defined in claim 1 wherein the unsaturated polyester is present in amounts of from about 70 to about 3 weight percent.
Claim 27
Dependent Claim
25 words
A composition as defined in claim 25 wherein the unsaturated polyester is present in an amount of from about 65 to about 5 weight percent.
Claim 28
Dependent Claim
30 words
A composition as defined in claim 1 wherein the half ester of formula (I) and maleic anhydride is present in amounts of from about 3 to about 70 weight percent.
Claim 29
Dependent Claim
30 words
A composition as defined in claim 27 wherein the half ester of formula (I) and maleic anhydride is present in amounts of from about 5 to about 65 weight percent.
Claim 30
Dependent Claim
25 words
A composition as defined in claim 1 wherein the ethylenically unsaturated monomer is present in amounts of from about 20 to about 80 weight percent.
Claim 31
Dependent Claim
25 words
A composition as defined in claim 29 wherein the ethylenically unsaturated monomer is present in amounts of from about 25 to about 60 weight percent.
Claim 32
Dependent Claim
12 words
A composition as defined in claim 1 which contains a basic compound.
Claim 33
Dependent Claim
11 words
A cured molded article prepared from the composition of claim 1.
Claim 34
Dependent Claim
47 words
A cured molded article as defined in claim 32 wherein the molded article contains from about 15 to about 80 weight percent, of the weight of the molded article, of one or more fibers with a melting point or a glass transition temperature above about 130° C.
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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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |