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Patent US2570029A successfully refreshed from Google Patents.
US2570029A
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Allyl esters of 3:6-endoxo-1:2-cyclo-hexane-dicarboxylic acid and polymers thereof
Assignee: Rhone Poulenc SA
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Filing: 1949-10-28
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Granted: 1951-10-02
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Expires: 1969-10-28
Abstract
No abstract record available.
Inventors
- 👤 Fluchaire Maurice Loui Auguste
- 👤 Collardeau Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/08; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
A PROCESS FOR THE PRODUCTION OF A POLYMER WHICH COMPRISES SUBJECTING TO HEAT TREATMENT A DIESTER OF 3:6-ENDOXO-1:2-CYCLOHEXANE-DICARBOXYLIC ACID FORMED WITH AN ALCOHOL OF THE GENERAL FORMULA CH2=CR-CH2OH WHERE R IS SELECTED FROM THE CLASS CONSISTING OF THE HYDROGEN ATOM, HALOGEN ATOMS AND HYDROCARBON GROUPS, AND DISCONTINUING THE HEAT TREATMENT WHEN THE REACTION PRODUCT IS IN THE FORM OF A FUSIBLE SOLID POLYMER SOLUBLE IN ORGANIC SOLVENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |