US2582425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tripolymer of a vinyl aromatic compound, a coumarone-indene fraction and material recovered from a hydrocarbon-catalyst sludge
Assignee: Universal Oil Products Co
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Filing: 1949-05-18
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Granted: 1952-01-15
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Expires: 1969-05-18
Abstract
No abstract record available.
Inventors
- 👤 Edward M Geiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:22
CPC Classifications
C; C08; C08F; C08F240/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR THE PRODUCTION OF A RESINOUS COPOLYMER COMPOSITION WHICH COMPRISES REACTING A MIXTURE OF UNSATURATED HYDROCARBON CONJUNCT POLYMERS, RECOVERED FROM AN ACID-ACTING CATALYST-HYDROCARBON COMPLEX FORMED IN CATALYTIC CONJUNCT POLYMERIZATION OF HYDROCARBONS, WITH AN A VINYL AROMATIC COMPOUND AND A COUMARONE-INDENE FRACTION IN THE PRESENCE OF AN ACID-ACTING COPOLYMERIZATION CATALYST, SAID CONJUNCT POLYMERS BEING POLYOLEFINIC, CYCLIC HYDROCARBONS BOILING IN THE RANGE OF FROM ABOUT 150* TO ABOUT 450* C. AND HAVING BROMINE NUMBERS ABOVE ABOUT 140 AND MALEIC ANHYDRIDE VALUES OF FROM ABOUT 30 TO ABOUT 90 AND CONTAINING FROM ABOUT 2.5 TO ABOUT 4.5 DOUBLE BONDS PER MOLECULE, OF WHICH FROM ABOUT 40% TO ABOUT 70% ARE IN CONJUGATED RELATIONSHIP WITH EACH OTHER.
Claim 2
Dependent Claim
115 words
A PROCESS FOR THE PRODUCTION OF A RESINOUS COPOLYMER COMPOSITION WHICH COMPRISES REACTING A MIXTURE OF UNSATURATED HYDROCARBON CONJUNCT POLYMERS, RECOVERED FROM AN ACID-ACTING CATALYST-HYDROCARBON COMPLEX FORMED IN CATALYTIC CONJUNCT POLYMERIZATION OF HYDROCARBONS, WITH AN A VINYL AROMATIC COMPOUND AND A COUMARONE-INDENE FRACTION IN THE PRESENCE OF AN ACID-ACTING COPOLYMERIZATION CATALYST, SAID CONJUNCT POLYMERS BEING POLYOLEFINIC, CYCLIC HYDROCARBONS BOILING IN THE RANGE OF FROM ABOUT 150* TO ABOUT 450* C. AND HAVING BROMINE NUMBERS ABOVE ABOUT 140 AND MALEIC ANHYDRIDE VALUES OF FROM ABOUT 30 TO ABOUT 90 AND CONTAINING FROM ABOUT 2.5 TO ABOUT 4.5 DOUBLE BONDS PER MOLECULE, OF WHICH FROM ABOUT 40% TO ABOUT 70% ARE IN CONJUGATED RELATIONSHIP WITH EACH OTHER.
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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |