US3013000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of chloroprene stabilized with phenthiazine
Assignee: Bayer AG
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Filing: 1959-03-19
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Granted: 1961-12-12
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Expires: 1979-03-19
Abstract
No abstract record available.
Inventors
- 👤 Heinz Anton Robert
- 👤 Rosahl Dietrich
- 👤 Graulich Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:46
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR THE POLYMERIZATION OF CHLOROPRENE WHICH COMPRISES CONTACTING A MIXTURE OF A MAJOR AMOUNT OF CHLOROPRENE AND A MINOR AMOUNT OF A HALOGENATED DIOLEFIN IN THE PRESENCE OF PHENTHIAZINE IN AN AQUEOUS EMULSION WITH 0.02-2% BY WEIGHT, CALCULATED ON THE CHLOROPRENE, OF FORMAMIDINE SULFINIC ACID AT A PH VALUE OF 7-12 AND AT A TEMPERATURE OF ABOUT 0*-80* C., THEREBY CAUSING THE CHLOROPRENE TO POLYMERIZE.
Claim 2
Dependent Claim
67 words
A PROCESS FOR THE POLYMERIZATION OF CHLOROPRENE WHICH COMPRISES CONTACTING A MIXTURE OF A MAJOR AMOUNT OF CHLOROPRENE AND A MINOR AMOUNT OF A HALOGENATED DIOLEFIN IN THE PRESENCE OF PHENTHIAZINE IN AN AQUEOUS EMULSION WITH 0.02-2% BY WEIGHT, CALCULATED ON THE CHLOROPRENE, OF FORMAMIDINE SULFINIC ACID AT A PH VALUE OF 7-12 AND AT A TEMPERATURE OF ABOUT 0*-80* C., THEREBY CAUSING THE CHLOROPRENE TO POLYMERIZE.
References Cited (Backward Citations)
US2227519A
Cited
US2745813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |