Patent US4503200A successfully refreshed from Google Patents.
US4503200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat curable polyepoxide resin blends
Assignee: Resolution Performance Products LLC
•
Filing: 1984-03-27
•
Granted: 1985-03-05
•
Expires: 2004-03-27
Abstract
Abstract The present invention is directed to a heat-curable composition comprising: (1) a polyepoxide, (2) at least one unsaturated monomer (e.g., esters of ethylenically unsaturated monocarboxylic acids), (3) an acid anhydride, (4) at least one epoxy curing accelerator (onium salts such as ethyl triphenyl phosphonium iodide) and (5) a free radical initiator.
Inventors
- 👤 Larry S. Corley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:29
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08F; C08F283/00; C08F283/10; C08G59/40; C08G59/42
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A heat-curable, styrene-free, composition exhibiting high heat deflection temperatures and excellent physical properties comprising: (1) from about 30 to about 99 parts by weight of an epoxy compound containing at least one vicinal epoxy group, (2) from about 1 to about 70 parts by weight of a polyacrylate or polymethacrylate ester of a polyol, (3) from about 0.25 to about 2.0 stoichiometric equivalents based on the epoxy compound of a polycarboxylic acid anhydride, (4) an accelerating amount of an onium compound or a stannous salt of a monocarboxylic acid, and (5) a curing amount of an organic peroxide.
Claim 2
Dependent Claim
98 words
A heat-curable, styrene-free, composition exhibiting high heat deflection temperatures and excellent physical properties comprising: (1) from about 30 to about 99 parts by weight of an epoxy compound containing at least one vicinal epoxy group, (2) from about 1 to about 70 parts by weight of a polyacrylate or polymethacrylate ester of a polyol, (3) from about 0.25 to about 2.0 stoichiometric equivalents based on the epoxy compound of a polycarboxylic acid anhydride, (4) an accelerating amount of an onium compound or a stannous salt of a monocarboxylic acid, and (5) a curing amount of an organic peroxide.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the epoxy compound 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
11 words
The composition of claim 2 wherein the 2,2-bis(4-hydroxyphenyl)propane has been hydrogenated.
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein the polymethacrylate ester is trimethylolpropane trimethacrylate.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the polyacrylate ester is pentaerythritol triacrylate.
Claim 8
Dependent Claim
13 words
The composition of claim 1 wherein the polycarboxylic acid anhydride is trimellitic anhydride.
Claim 9
Dependent Claim
14 words
The composition of claim 1 wherein the polycarboxylic acid anhydride is 3,3',4,4'-benzophenone tetracarboxylic dianhydride.
Claim 10
Dependent Claim
15 words
The composition of claim 1 wherein the onium compound is a phosphonium or ammonium halide.
Claim 11
Dependent Claim
14 words
The composition of claim 9 wherein the phosphonium halide is ethyl triphenyl phosphonium iodide.
Claim 12
Dependent Claim
12 words
The composition of claim 1 wherein the stannous salt is stannous octoate.
References Cited (Backward Citations)
US2658885A
Cited
US2691007A
Cited
US2633458A
Cited
US2939859A
Cited
US3009898A
Cited
US3099638A
Cited
US3336241A
Cited
US3356624A
Cited
US3408219A
Cited
US3446762A
Cited
US3574157A
Cited
US3634542A
Cited
US3637618A
Cited
US4010289A
Cited
JPS5518401A
Cited
US4284753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |