US3696083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymercaptan modifier vinyl halide polymers
Assignee: Stauffer Chemical Co
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Filing: 1970-10-27
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Granted: 1972-10-03
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Expires: 1990-10-27
Abstract
Abstract VINYL HALIDE POLYMERS WHICH EXHIBIT IMPROVED PROCESSING CHARACTERISTICS WITHOUT SACRIFICING PHYSICAL PROPERTIES ARE PREPARED BY POLYMERIZING VINYL HALIDE MONOMER IN THREE MERCAPTAN GROUPS IN AN AMOUNT BASED ON -SH EQUIVALENCE OF FROM ABOUT 0.00015 TO ABOUT 0.05 EQUIVALENCE -SH PER MOLE OF MONOMERIC MATERIAL. THE MONOMER IS PREFERABLY 100% VINYL CHLORIDE THROUGH MIXTURES CONTAINING A PREDOMINANT AMOUNT OF VINYL CHLORIDE WITH MINOR AMOUNTS OF OTHER ETHYLENICALLY UNSATURATED MONOMERS CAN ALSO BE USED.
Inventors
- 👤 Jesse C H Hwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:45
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 0
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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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |