Patent US3562358A successfully refreshed from Google Patents.
US3562358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymerization of vinyl halide monomers and diene polymers
Assignee: Stauffer Chemical Co
•
Filing: 1967-11-07
•
Granted: 1971-02-09
•
Expires: 1987-11-07
Abstract
Abstract VINYL HALIDE POLYMERS WHICH EXHIBIT IMPROVED PROCESSING CHARACTERISTICS WITHOUT SACRIFICING PHYSICAL PROPERTIES ARE PREPARED BY POLYMERIZING VINYL HALIDE MONOMER IN THE PRESENCE OF FROM ABOUT 0.05% TO ABOUT 0.75% BY WEIGHT BASED ON THE TOTAL WEIGHT OF MONOMER OF A DIENE POLYMER HAVING AVAILABLE UNSATURATION SUCH AS POLYBUTADIENE, STYRENE/BUTADIENE COPOLYMER OR NATURAL RUBBER. THE MONOMER IS PREFERABLY 100% VINYL CHLORIDE THROUGH MINOR AMOUNTS OF OTHER ETHYLENICALLY UNSATURATED MONOMERS CAN ALSO BE USED.
Inventors
- 👤 Sheldon F Gelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:04
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |