US3249654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of a vinyl ester with a polymeric acetal
Assignee: Bayer AG
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Filing: 1963-05-14
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Granted: 1966-05-03
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Expires: 1983-05-14
Abstract
No abstract record available.
Inventors
- 👤 Bonin Wulf Von
- 👤 Wagner Kuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:04
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/06; C08G; C08G4/00; C08G6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS FOR THE PREPARATION OF POLYCONDENSATEMODIFIED POLYMERS WHICH COMPRISES POLYMERIZING BY MEANS OF A PEROXIDE POLYMERIZATION CATAYLST (A) A VINYLESTER CONTAINING IN ITS ESTER GROUP 2-4 CARBON ATOMS WITH (B) A POLYACETAL HAVING A MOLECULAR WEIGHT OF AT LEAST 200 AND CORRESPONDING TO THE FORMULA R1-O-((CH2-CH2-O)N-CH2-O)M-R1 WHEREIN R1 REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, AN ALKYL GROUP HAVING 1-4 CARBON ATOMS AND AN ACYL GROUP CONTAINING 2-4 CARBON ATOMS AND BEING DERIVED FROM AN ALIPHATIC SATURATED MONOCARBOXYLIC ACID, WHEREIN N INDICATES A WHOLE NUMBER OF 1 TO 3 AND M A WHOLE NUMBER OF 8 TO 20, SAID VINYLESTER (A) BEING PRESENT IN AN AMOUNT OF BETWEEN 3 AND 95 PERCENT BY WEIGHT, CALCULATED ON THE SUM OF THE COMPONENTS (A) AND (B), SAID POLYACETAL BEING OBTAINED BY CONDENSING ALDEHYDE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF DIOLS AND TRIOLS.
Claim 2
Dependent Claim
147 words
A PROCESS FOR THE PREPARATION OF POLYCONDENSATEMODIFIED POLYMERS WHICH COMPRISES POLYMERIZING BY MEANS OF A PEROXIDE POLYMERIZATION CATAYLST (A) A VINYLESTER CONTAINING IN ITS ESTER GROUP 2-4 CARBON ATOMS WITH (B) A POLYACETAL HAVING A MOLECULAR WEIGHT OF AT LEAST 200 AND CORRESPONDING TO THE FORMULA R1-O-((CH2-CH2-O)N-CH2-O)M-R1 WHEREIN R1 REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, AN ALKYL GROUP HAVING 1-4 CARBON ATOMS AND AN ACYL GROUP CONTAINING 2-4 CARBON ATOMS AND BEING DERIVED FROM AN ALIPHATIC SATURATED MONOCARBOXYLIC ACID, WHEREIN N INDICATES A WHOLE NUMBER OF 1 TO 3 AND M A WHOLE NUMBER OF 8 TO 20, SAID VINYLESTER (A) BEING PRESENT IN AN AMOUNT OF BETWEEN 3 AND 95 PERCENT BY WEIGHT, CALCULATED ON THE SUM OF THE COMPONENTS (A) AND (B), SAID POLYACETAL BEING OBTAINED BY CONDENSING ALDEHYDE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF DIOLS AND TRIOLS.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |