Patent US2888442A successfully refreshed from Google Patents.
US2888442A
Expired / Lapsed
US
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New polymers from conjugated dienes and polyvinyl compounds prepared in the presence of mercaptans
Assignee: Phillips Petroleum Co
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Filing: 1954-04-09
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Granted: 1959-05-26
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Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Carl A Uraneck
- 👤 Jr Willard M St John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:09
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
A COMPOSITION OF MATTER COMPRISING A COPOLYMER OF 75 TO 99 PARTS BY WEIGHT PER 100 PARTS MONOMERIC MATERIAL OF A CONJUGATED DIENE OF 4 TO 6 CARBON ATOMS, 1 TO 10 PARTS BY WEIGHT OF A CROSS-LINKING COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYVINYL AROMATIC HYDROCARBONS, DIVINYL SULFIDE, DIVINYL SULFONE, DIVINYL ETHER, POLYACRYLATE ESTERS OF POLYHDRIC ALCOHOLS AND MONOVINYL ACETYLENE, AND 0 TO 24 WEIGHT PARTS OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, ETHYL ACRYLATE, STYRENE, 2-METHYL-5VINYLPYRIDINE, BETA-VINYLNAPHTHALENE, VINYLIDENE CHLORIDE AND TRIALLYCYANURATE, THE SAID COPLOYMER HAVING BEEN FORMED BY EMULSION POLYMERIZATION IN THE PRESENCE OF 5 TO 50 PARTS BY WEIGHT OF A MERCAPTAN PER 100 PARTS MONOMER.
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |