Patent US1826671A successfully refreshed from Google Patents.
Patent US3067185A successfully refreshed from Google Patents.
US3067185A
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Polymerization of olefinic compounds in the presence of catalysts having a trialkyl boron base
Assignee: Solvic SA
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Filing: 1959-07-28
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Granted: 1962-12-04
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Expires: 1979-07-28
Abstract
No abstract record available.
Inventors
- 👤 Coene Robert De
- 👤 Mathieu Alexis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:37
CPC Classifications
C; C08; C08F; C08F114/00; C08F114/02; C08F114/04; C08F114/06; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF POLYMERIZING VINYL CHLORIDE WHICH COMPRISES EFFECTING POLYMERIZATION OF SAID VINYL CHLORIDE IN CONTACT WITH AN ORGANIC BORON COMPOUND HAVING THE GENERAL FORMULA BR3, WHEREIN R IS AN ALKYL RADICAL, 0.001 TO 0.2% OF MOLECULAR OXYGEN, AND 0.001 TO 2% OF WATER, THE QUANTITY OF SAID OXYGEN AND THE QUANTITY OF SAID WATER BEING BASED UPON THE WEIGHT OF SAID VINYL CHLORIDE, AND SAID 0.001 TO 2% OF WATER BEING THE ONLY WATER PRESENT IN THE POLYMERIZATION SYSTEM.
Claim 2
Independent Claim
80 words
A METHOD OF POLYMERIZING VINYL CHLORIDE WHICH COMPRISES EFFECTING POLYMERIZATION OF SAID VINYL CHLORIDE IN CONTACT WITH AN ORGANIC BORON COMPOUND HAVING THE GENERAL FORMULA BR3, WHEREIN R IS AN ALKYL RADICAL, 0.001 TO 0.2% OF MOLECULAR OXYGEN, AND 0.001 TO 2% OF WATER, THE QUANTITY OF SAID OXYGEN AND THE QUANTITY OF SAID WATER BEING BASED UPON THE WEIGHT OF SAID VINYL CHLORIDE, AND SAID 0.001 TO 2% OF WATER BEING THE ONLY WATER PRESENT IN THE POLYMERIZATION SYSTEM.
References Cited (Backward Citations)
US2985633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |