US3723398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting polymers derived from compounds of five and six membered cyclic alpha, beta-unsaturated ethers
Assignee: PPG Industries Inc
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Filing: 1971-05-07
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Granted: 1973-03-27
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Expires: 1991-05-07
Abstract
Abstract Compounds containing 2-tetrahydropyranyloxy groups or 2tetrahydrofuranyloxy groups are formed by reacting carboxylic acid esters containing hydroxyl groups with 2,3-dihydropyran or 2,3-dihydrofuran. Preferred embodiments include 2-(2tetrahydropyranyloxy)ethyl acrylate, 2-(2tetrahydropyranyloxy)ethyl methacrylate, and butyl 2-(2tetrahydropyranyloxy)ethyl fumarate. Homopolymers and interpolymers of the 2-tetrahydropyranyloxy and 2-tetrahydrofuranyloxy compounds with other ethylenic monomers are useful as films and coatings which cure very rapidly at low temperatures and are solvent resistant.
Inventors
- 👤 R Dowbenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:23
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07D307/20; C08F8/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
13 words
The polymer of claim 1 wherein the cyclic alpha, beta-unsaturated ether is 2,3-dihydropyran.
Claim 2
Dependent Claim
21 words
The polymer of claim 1 wherein the ether of (A) comprises from 5 to 20 percent by weight of the interpolymer.
Claim 3
Dependent Claim
21 words
The polymer of claim 1 wherein one of the other ethylenic monomers copolymerizable with the ether of (A) is methyl methacrylate.
Claim 4
Dependent Claim
21 words
The polymer of claim 1 wherein one of the other ethylenic monomers copolymerizable with the ether of (A) is 2-hydroxyethyl methacrylate.
Claim 5
Dependent Claim
20 words
The polymer of claim 1 wherein one of the other ethylenic monomers copolymerizable with the ether of (A) is acrylamide.
Claim 6
Dependent Claim
31 words
The polymer of claim 1 wherein one of the other ethylenic monomers copolymerizable with the ether of (A) contains groups selected from the class consisting of hydroxyl groups and carboxyl groups.
Claim 7
Dependent Claim
19 words
The polymer of claim 2 wherein the ethylenically unsaturated carboxylic acid ester containing pendant hydroxyl groups is hydroxyethyl methacrylate.
References Cited (Backward Citations)
US3637760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |