Patent US4338242A successfully refreshed from Google Patents.
US4338242A
Expired / Lapsed
US
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Urethane modified polymers having hydroxyl groups
Assignee: Dow Chemical Co
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Filing: 1980-09-19
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Granted: 1982-07-06
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Expires: 2000-09-19
Abstract
Abstract Curable polymeric products are the reaction product of a polymer containing secondary hydroxyl groups and an aliphatic unsaturated isocyanate.
Inventors
- 👤 Bruce L. Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:46
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/6705; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C08G18/70; C08G18/81; C08G18/8108; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
27 words
A curable reaction product of a vinyl ester resin having secondary hydroxyl groups and from 0.05 to 1 equivalent based on said secondary hydroxyls of isocyanatoethyl methacrylate.
Claim 2
Dependent Claim
27 words
A curable reaction product of a vinyl ester resin having secondary hydroxyl groups and from 0.05 to 1 equivalent based on said secondary hydroxyls of isocyanatoethyl methacrylate.
Claim 3
Dependent Claim
23 words
The reaction product of claim 1 wherein said vinyl ester resin is the diester of a polyglycidyl ether with an unsaturated monocarboxylic acid.
Claim 4
Dependent Claim
25 words
The reaction product of claim 1 wherein said vinyl ester resin is the diester of a diglycidyl ether of bisphenol A and a monocarboxylic acid.
Claim 5
Dependent Claim
13 words
The reaction product of claim 1 wherein said monocarboxylic acid is methacrylic acid.
Claim 6
Dependent Claim
22 words
A curable composition of the reaction product of claim 1 mixed with up to 60 weight percent of an ethylenically unsaturated monomer.
Claim 7
Dependent Claim
10 words
The composition of claim 5 wherein said monomer is styrene.
Claim 8
Dependent Claim
9 words
The composition of claim 5 further containing glass fibers.
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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) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |