US3105055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of plasticizing polychloroprene employing alkali sulfite
Assignee: EIDP Inc
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Filing: 1960-04-05
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Granted: 1963-09-24
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Expires: 1980-04-05
Abstract
No abstract record available.
Inventors
- 👤 Aho Charles Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:23
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16; C08C; C08C19/00; C08C19/085; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN THE PROCESS FOR PREPARING PLASTIC SULFUR-MODIFIED POLYCHLOROPRENE IN WHICH THE CHLOROPRENE IS POLYMERIZED IN AN AQUEOUS ALKALINE EMULSION CONTAINING A DISPERSING AGENT, A SMALL AMOUNT OF SULFUR AND A PEROXY COMPOUND AS THE CATALYST AND TO WHICH AN ALKYL THIURAM DISULFIDE IS ADDED IN THE DISPERSION OF THE POLYCHLOROPRENE, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE AQUEOUS DISPERSION OF THE POLYMER, AFTER POLYMERIZATION HAS BEEN BROUGHT TO THE STAGE OF COMPLETION DESIRED BUT PRIOR TO COAGULATION OF THE POLYMER, FROM 0.1 PART TO 0.8 PART OF AN ALKALI SULFITE PER 100 PERTS OF POLYCHLOROPRENE IN THE DISPERSION, THEN COAGULATING, WASHING THE COAGULATED POLYMER WITH WATER, AND DRYING.
Claim 2
Dependent Claim
108 words
IN THE PROCESS FOR PREPARING PLASTIC SULFUR-MODIFIED POLYCHLOROPRENE IN WHICH THE CHLOROPRENE IS POLYMERIZED IN AN AQUEOUS ALKALINE EMULSION CONTAINING A DISPERSING AGENT, A SMALL AMOUNT OF SULFUR AND A PEROXY COMPOUND AS THE CATALYST AND TO WHICH AN ALKYL THIURAM DISULFIDE IS ADDED IN THE DISPERSION OF THE POLYCHLOROPRENE, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE AQUEOUS DISPERSION OF THE POLYMER, AFTER POLYMERIZATION HAS BEEN BROUGHT TO THE STAGE OF COMPLETION DESIRED BUT PRIOR TO COAGULATION OF THE POLYMER, FROM 0.1 PART TO 0.8 PART OF AN ALKALI SULFITE PER 100 PERTS OF POLYCHLOROPRENE IN THE DISPERSION, THEN COAGULATING, WASHING THE COAGULATED POLYMER WITH WATER, AND DRYING.
References Cited (Backward Citations)
US2234215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |