US3115485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of copolymers
Assignee: Bayer AG
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Filing: 1961-08-15
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Granted: 1963-12-24
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Expires: 1981-08-15
Abstract
No abstract record available.
Inventors
- 👤 Bartl Herbert
- 👤 Becker Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:37
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A PROCESS FOR THE COPOLYMERIZATION OF ETHYLENE AND A VINYL ESTER SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE AND VINYL PROPIONATE IN THE PRESENCE OF A FREE RADICAL FORMING CATALYST IN A LIQUID PHASE CONTAINING TERTIARY BUTANOL, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID COPOLYMERIZATION AT TEMPERATURES OF BETWEEN 200 AND 700 ATMOSPHERE AND A TEMPERATURE OF BETWEEN 10* AND 200*C. IN THE PRESENCE OF AN ORGANIC LIQUID PHASE WHICH CONTAINS, IN ADDITION TO TERTIARY BUTANOL, A SPECIAL ORGANIC LIQUID SELECTED FROM THE GROUP CONSISTING OF AN ALIPHATIC SATURATED HYDROCARBON OF 4 TO 10 CARBON ATOMS HAVING NOT MORE THAN ONE
Claim 2
Dependent Claim
102 words
IN A PROCESS FOR THE COPOLYMERIZATION OF ETHYLENE AND A VINYL ESTER SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE AND VINYL PROPIONATE IN THE PRESENCE OF A FREE RADICAL FORMING CATALYST IN A LIQUID PHASE CONTAINING TERTIARY BUTANOL, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID COPOLYMERIZATION AT TEMPERATURES OF BETWEEN 200 AND 700 ATMOSPHERE AND A TEMPERATURE OF BETWEEN 10* AND 200*C. IN THE PRESENCE OF AN ORGANIC LIQUID PHASE WHICH CONTAINS, IN ADDITION TO TERTIARY BUTANOL, A SPECIAL ORGANIC LIQUID SELECTED FROM THE GROUP CONSISTING OF AN ALIPHATIC SATURATED HYDROCARBON OF 4 TO 10 CARBON ATOMS HAVING NOT MORE THAN ONE
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |