Patent US4359370A successfully refreshed from Google Patents.
US4359370A
Expired / Lapsed
US
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Curable epoxy-vinyl ester compositions
Assignee: Resolution Performance Products LLC
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Filing: 1980-11-24
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Granted: 1982-11-16
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Expires: 2000-11-24
Abstract
Abstract Partial vinyl-epoxy ester compositions are disclosed which can be cured by a dual path comprising exposure to UV radiation followed by a post thermal treatment. Simply, the partial esters contain from about 1 to 10 parts per hundred parts by weight of ester of a catalyst compound such as tertiary amines and imidazole compounds, salts and adducts thereof.
Inventors
- 👤 Harold E. De La Mare
- 👤 Paul D. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/182; C08G59/184; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C08F299/00; C08F299/02; C08F299/026; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A heat-curable, tack free composition exhibiting excellent shelf life consisting essentially of (1) a partial vinyl ester containing hydroxyl groups prepared by reacting from about 0.50 to about 0.85 chemical equivalents of an ethylenically unsaturated monocarboxylic acid with a chemical equivalent amount of an epoxy compound containing more than one vicinal-epoxy group and (2) a catalytic amount of an adduct of an imidazole compound and a glycidyl ether of 2,2-bis(4-hydroxyphenyl)propane, said blend being exposed to UV radiation in an amount to effect a tack-free, B-stage partial cure.
Claim 2
Dependent Claim
87 words
A heat-curable, tack free composition exhibiting excellent shelf life consisting essentially of (1) a partial vinyl ester containing hydroxyl groups prepared by reacting from about 0.50 to about 0.85 chemical equivalents of an ethylenically unsaturated monocarboxylic acid with a chemical equivalent amount of an epoxy compound containing more than one vicinal-epoxy group and (2) a catalytic amount of an adduct of an imidazole compound and a glycidyl ether of 2,2-bis(4-hydroxyphenyl)propane, said blend being exposed to UV radiation in an amount to effect a tack-free, B-stage partial cure.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the epoxy compound is a glycidyl ether of a polyhydric phenol.
Claim 4
Dependent Claim
15 words
The composition of claim 2 wherein the epoxy compound is the diglycidyl ether of 2,2-bis(4-hydroxyphenyl)propane.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein the ethylenically unsaturated monocarboxylic acid is acrylic or methacrylic acid.
Claim 6
Dependent Claim
20 words
The composition of claim 1 wherein the catalyst compound is an adduct of 2-methylimidazole and a diglycidyl ether of 2,2-bis(4-hydroxyphenyl)propane.
Claim 7
Dependent Claim
27 words
A cured composition prepared by heating the composition of claim 1 at about 100° C. to about 225° C. for about 5 minutes to about 60 minutes.
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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) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |