Patent US3573268A successfully refreshed from Google Patents.
US3573268A
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US
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Method for the preparation of vinyl chloride based polymers at low temperature
Assignee: Produits Chimiques Pechiney Saint Gobain
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Filing: 1969-03-24
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Granted: 1971-03-30
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Expires: 1989-03-24
Abstract
Abstract THE METHOD FOR PREPARING VINYL CHLORIDE BASED POLYMERS IN WHICH THE MONOMERS CONTAINING VINYL CHLORIDE ARE POLYMERIZED AT LOW TEMPERATURE IN A CATALYTIC SYSTEM FORMULATED OF AN (A) SYSTEM CONTAINING A REDUCING COMPOUND OF A METAL IN THE SUB-GROUPS I-A TO IV-A OF THE PERIODIC CLASSIFICATION; A COMPOUND OF A TRANSITION METAL SELECTED FROM THE SUB-GROUPS I-B TO VII-B AND VIII OF THE PERIODIC CLASSIFICATION, AND A PEROXYGENATED COMPOUND.
Inventors
- 👤 Marc E Carrega
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:09
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |