Patent US4358574A successfully refreshed from Google Patents.
US4358574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrocarbon resins and products resulting therefrom
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1981-01-19
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Granted: 1982-11-09
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Expires: 2001-01-19
Abstract
Abstract Hydrocarbon resins having an increased softening point are obtained by a process featuring the sequential steps of: isomerizing the 2-methylbutene-1 component of a branched olefin modifier stream whereby its 2-methylbutene-2 content is enriched; polymerizing a feedstock consisting of the mixture of said enriched modifier stream and a piperylene rich feed stream; and, recovering said hydrocarbon resin with properties enhancing its utility for adhesive applications.
Inventors
- 👤 Vincent L. Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:08
CPC Classifications
C; C08; C08F; C08F240/00; C08F236/00; C08F236/02; C08F236/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A hydrocarbon resin comprising from 40 to 50 weight percent units derived from piperylene, 15 to 20 weight percent units derived from 2-methylbutenes and the balance derived from other olefinic compounds having from 5 to 6 carbons, said 2-methylbutenes consisting essentially as the 2-methylbutene-2 isomer and the 2-methylbutene-1 isomer in a weight ratio of the former isomer to the latter isomer being greater than 10 whereby said resin has a softening point of at least 90° C.
Claim 2
Dependent Claim
77 words
A hydrocarbon resin comprising from 40 to 50 weight percent units derived from piperylene, 15 to 20 weight percent units derived from 2-methylbutenes and the balance derived from other olefinic compounds having from 5 to 6 carbons, said 2-methylbutenes consisting essentially as the 2-methylbutene-2 isomer and the 2-methylbutene-1 isomer in a weight ratio of the former isomer to the latter isomer being greater than 10 whereby said resin has a softening point of at least 90° C.
Claim 3
Dependent Claim
35 words
The hydrocarbon resin according to claim 1 wherein said isomer weight ratio of 2-methylbutene-2 to 2-methylbutene-1 ranges from 15 to 100 whereby said resin has a softening point of from 90° C. to 100° C.
Claim 4
Dependent Claim
35 words
The hydrocarbon resin according to claim 1 wherein said isomer weight ratio of 2-methylbutene-2 to 2-methylbutene-1 ranges from 18 to 30 whereby said resin has a softening point of from 90° C. to 100° C.
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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |