US3637760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounds of five and six-membered cyclic alpha beta-unsaturated ethers
Assignee: PPG Industries Inc
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Filing: 1970-01-19
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Granted: 1972-01-25
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Expires: 1990-01-19
Abstract
Abstract COMPOUNDS CONTAINING 2-TETRAHYDROPYRANYLOXY GROUPS OR 2-TETRAHYDROFURANYLOXY GROUPS ARE FORMED BY REACTING CARBOXYLIC ACID ESTERS CONTAINING HYDROXYL GROUPS WITH 2,3DIHYDROPYRAN OR 2,3-DIHYDROFURAN. PREFERRED EMBODIMENTS INCLUDE 2-(2-TETRAHYDROPHYRANYLOXY)ETHYL ACRYLATE, 2-(2TETRAHYDROPHYRANYLOXY)ETHYL METHACRYLAT E, AND BUTYL 2-(2TETRAHYDROPYRANYLOXY)ETHYL FURMARATE. HOMOPOLYMERS AND INTERPOLYMERS OF THE 2-TETRAHYDROPYRANLOXY 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
- 👤 Rostyslaw Dowbenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:11
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; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C08F8/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |