Patent US2567918A successfully refreshed from Google Patents.
US2567918A
Expired / Lapsed
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Alpha-pinene and vinyl cyclohexene resin
Assignee: Pennsylvania Industrial Chemical Corp
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Filing: 1948-08-23
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Granted: 1951-09-18
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Expires: 1968-08-23
Abstract
No abstract record available.
Inventors
- 👤 Samuel G Burroughs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:13
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD OF PRODUCING HARD RESIN POLYMERS BY BRINGING A MIXTURE OF 1-VINYL CYCLOHEXENE-3 (CYCLIC DIMER OF BUTADINE AND A COMPOUND CONSISTING OF ALPHA-PINENE IN A PROPORTION OF VINYL CYCLOHEXANE EQUAL TO FORM 10% TO 50% THE WEIGHT OF THE BLEND INTO REACTIVE CONTACT WITH AN ACID-REACTING METAL HALIDE POLYMERIZATION CATALYST IN THE PRESENCE OF AN INERT SOLVENT DILUENT FOR THE POLYMERS OF THE SAID VINYL CYCLOHEXENE AND ALPHA-PINENE, TO FORM HARD RESIN POLYMERS OF VINYL CYCLOHEXENE AND ALPHA-PINENE IN SOLUTION, AND RECOVERING THE RESIN POLYMERS SO FORMED.
Claim 2
Independent Claim
88 words
THE METHOD OF PRODUCING HARD RESIN POLYMERS BY BRINGING A MIXTURE OF 1-VINYL CYCLOHEXENE-3 (CYCLIC DIMER OF BUTADINE AND A COMPOUND CONSISTING OF ALPHA-PINENE IN A PROPORTION OF VINYL CYCLOHEXANE EQUAL TO FORM 10% TO 50% THE WEIGHT OF THE BLEND INTO REACTIVE CONTACT WITH AN ACID-REACTING METAL HALIDE POLYMERIZATION CATALYST IN THE PRESENCE OF AN INERT SOLVENT DILUENT FOR THE POLYMERS OF THE SAID VINYL CYCLOHEXENE AND ALPHA-PINENE, TO FORM HARD RESIN POLYMERS OF VINYL CYCLOHEXENE AND ALPHA-PINENE IN SOLUTION, AND RECOVERING THE RESIN POLYMERS SO FORMED.
References Cited (Backward Citations)
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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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |