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US4544732A
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Heat-curable composition
Assignee: Resolution Performance Products LLC
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Filing: 1984-12-24
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Granted: 1985-10-01
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Expires: 2004-12-24
Abstract
Abstract Heat-curable compositions exhibiting improved room temperature pot life and reduced viscosity are obtained from compositions comprising (1) a polyepoxide, (2) an aromatic or aliphatic amine, (3) a trihydrocarbyl sulfonium salt, (4) an unsaturated aromatic monomer and (5) a free radical curing agent.
Inventors
- 👤 Larry S. Corley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:37
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08F; C08F299/00; C08F299/02; C08F299/026; C08G59/40; C08G59/50
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
42 words
A curable composition comprising (1) a polyepoxide, (2) at least one aromatic or aliphatic amine, (3) a catalytic amount of a trihydrocarbyl sulfonium salt, (4) at least one unsaturated aromatic monomer and (5) a curing amount of a free radical curing agent.
Claim 2
Dependent Claim
42 words
A curable composition comprising (1) a polyepoxide, (2) at least one aromatic or aliphatic amine, (3) a catalytic amount of a trihydrocarbyl sulfonium salt, (4) at least one unsaturated aromatic monomer and (5) a curing amount of a free radical curing agent.
Claim 3
Dependent Claim
16 words
The composition of claim 1 wherein the polyepoxide is a glycidyl polyether of a polyhydric phenol.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein the polyhydric phenol is 2,2-bis(4-hydroxyphenyl)propane.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein the trihydrocarbyl sulfonium salt is a trialkyl sulfonium salt.
Claim 6
Dependent Claim
26 words
The composition of claim 4 wherein the trialkyl sulfonium salt is used in an amount from about 0.001% to about 10% by weight of the polyepoxide.
Claim 7
Dependent Claim
22 words
The composition of claim 1 wherein the trihydrocarbyl sulfonium salt is a mixture prepared by the condensation of 2,2'-thiodiethanol with tetrafluoroboric acid.
Claim 8
Dependent Claim
13 words
The composition of claim 1 wherein the trihydrocarbyl sulfonium salt is ethyl(2-hydroxyethyl)(2-(ethylthio)ethyl)sulfonium tetrafluoroborate.
Claim 9
Dependent Claim
11 words
The composition of claim 1 wherein the aromatic amine is 4,4'-methylenedianiline.
Claim 10
Dependent Claim
31 words
The composition of claim 1 wherein the unsaturated aromatic monomer is selected from the group consisting of styrene, alpha-methylstyrene, vinyl toluene, chlorostyrene, bromostyrene, nitrostyrene, divinylbenzene, tertiary-butylstyrene, 2-vinylpyridine, vinylnaphthalene and mixtures thereof.
Claim 11
Dependent Claim
12 words
The composition of claim 9 wherein the unsaturated aromatic monomer is styrene.
Claim 12
Dependent Claim
17 words
The composition of claim 9 wherein the unsaturated aromatic monomer is a mixture of styrene and divinylbenzene.
Claim 13
Dependent Claim
13 words
The composition of claim 1 wherein the free-radical curing agent is a peroxide.
Claim 14
Dependent Claim
12 words
The composition of claim 12 wherein the peroxide is an organic peroxide.
Claim 15
Dependent Claim
37 words
The composition of claim 1 wherein the relative amount of polyepoxide to unsaturated aromatic monomer is about 99 to about 25 percent by weight polyepoxide and about 1 to about 75 percent by weight unsaturated aromatic monomer.
Claim 16
Dependent Claim
22 words
The composition of claim 14 wherein the amount of amine is about 0.5 to about 1.5 chemical equivalents based on the polyepoxide.
Claim 17
Dependent Claim
25 words
The composition of claim 15 wherein the amount of trihydrocarbyl sulfonium salt is about 0.01 to about 10 percent by weight based on the polyepoxide.
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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |