US2965604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of chloroprene
Assignee: Bayer AG
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Filing: 1958-12-29
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Granted: 1960-12-20
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Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Anton R Heinz
- 👤 Haberland Hans
- 👤 Rosahl Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:16
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16; C08F36/18; C08F4/00; C08F4/06; C08F4/12; C08F4/14; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A PROCESS FOR PRODUCING A COPOLYMER OF CHLOROPRENE AND A FURTHER ETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIOLEFINS OF 4-6 CARBON ATOMS AND MONOETHYLENICALLY UNSATURATED MONOMERS WHICH ARE COPOLYMERIZABLE WITH CHLOROPRENE, WHICH COMPRISES CONTACTING IN AN AQUEOUS EMULSION CHLOROPRENE AND SAID FURTHER ETHYLENICALLY UNSATURATED MONOMER WITH ABOUT 0.1 TO 2.5 PERCENT BY WEIGH OF A BORON-TRIALKYL AND 0.05 TO 1 PERCENT BY WEIGHT OF MOLECULAR SULPHUR, SAID FURTHER UNSATURATED MONOMER BEING EMPLOYED IN AN AMOUNT OF 0.5-50% BY WEIGHT, SAID PROPORTIONS BY WEIGHT BEING CALCULATED ON THE WEIGHT OF THE TOTAL MONOMERS, THEREBY CAUSING SAID MONOMERS TO COPOLYMERIZE.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |