US2589151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thioglycolic acid adducts of rubber-like polymers and process of preparing same
Assignee: Standard Oil Development Co
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Filing: 1946-09-12
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Granted: 1952-03-11
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Expires: 1966-09-12
Abstract
No abstract record available.
Inventors
- 👤 Serniuk George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:51
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
THE PROCESS WHICH COMPRISES DISSOLVING IN BENZENE A SOLID, SYNTHETIC, RUBBER-LIKE EMULSION COPOLYMER OF BUTADIENE-1,3 WITH STYRENE, MIXING THE RESULTING SOLUTION WITH ONE MOL OF THIOGLYCOLIC ACID PER MOL OF POLYMER DOUBLE BOUNDS IN THE PRESENCE OF AIR AT ROOM TEMPERATURE TO SATURATE PARTIALLY THE DOUBLE BONDS OF THE COPOLYMER AND THEREBY FORMING A HYDROCARBON-INSOLUBLE VULCANIZABLE COPOLYMER ADDUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |