Patent US3171069A successfully refreshed from Google Patents.
Patent US3051689A successfully refreshed from Google Patents.
US3051689A
Expired / Lapsed
US
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Process for the trialkylboron catalyzed polymerization of vinyl monomers
Assignee: Union Carbide Corp
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Filing: 1960-04-25
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Granted: 1962-08-28
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Nathan L Zutty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:10
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; Y; Y10; Y10S; Y10S260/00; Y10S260/25; Y10S526/00; Y10S526/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN THE AQUEOUS TRIALKYLBORON-CATALYZED POLYMERIZATION OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND MIXTURES OF VINYL CHLORIDE WITH ETHYL ENE WHEREIN THE POLYMERIZABLE MONOMER IS SUSPENDED IN AN AQUEOUS DILUENT CONTAINING A SUSPENDING AGENT AND CONTACTED THEREIN WITH A CATALYTIC AMOUNT OF A TRIALKYLBORON AT A TEMPERATURE OF FROM ABOUT -30*C. TO ABOUT 100*C. AND FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A POLYMERIC PRODUCT, THE IMPROVEMENT WHICH COMPRISES THE STEP OF BRINGING SAID VINYL CHLORIDE INTO ADMIXTURE WITH SAID TRIALKYLBORON IN THE ABSENCE OF AND PRIOR TO CONTACT THEREOF WITH SAID SUSPENDING AGENT.
Claim 2
Dependent Claim
99 words
IN THE AQUEOUS TRIALKYLBORON-CATALYZED POLYMERIZATION OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND MIXTURES OF VINYL CHLORIDE WITH ETHYL ENE WHEREIN THE POLYMERIZABLE MONOMER IS SUSPENDED IN AN AQUEOUS DILUENT CONTAINING A SUSPENDING AGENT AND CONTACTED THEREIN WITH A CATALYTIC AMOUNT OF A TRIALKYLBORON AT A TEMPERATURE OF FROM ABOUT -30*C. TO ABOUT 100*C. AND FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A POLYMERIC PRODUCT, THE IMPROVEMENT WHICH COMPRISES THE STEP OF BRINGING SAID VINYL CHLORIDE INTO ADMIXTURE WITH SAID TRIALKYLBORON IN THE ABSENCE OF AND PRIOR TO CONTACT THEREOF WITH SAID SUSPENDING AGENT.
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |