US4020260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel hydrocarbon resins comprising 1,3-pentadiene, 1,5,9-cyclododecatriene and optionally monoolefin
Assignee: Zeon Corp
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Filing: 1975-03-10
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Granted: 1977-04-26
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Expires: 1995-03-10
Abstract
Abstract Hydrocarbon resins comprising about 95-35% by weight of units derived from 1,3-pentadiene, about 1-50% by weight of units derived from cyclododecatriene, and O-about 40% by weight of units derived from at least one monoolefin containing 5 carbon atoms, having a softening point of from about 100° to about 160° C., and being substantially gel-free. The hydrocarbon resins can be prepared by polymerizing a monomeric mixture comprising 1,3-pentadiene in the presence of a Friedel-Crafts type metal halide catalyst, said monomeric mixture comprising about 95-35% by weight of 1,3-pentadiene, about 1-50% by weight of cyclododecatriene, and 0-about 50% by weight of at least one monoolefin containing 5 carbon atoms.
Inventors
- 👤 Shozo Shiozaki
- 👤 Yonesaku Shinohara
- 👤 Takeo Miyake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:42
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A hydrocarbon resin having a softening point of from about 100° to about 160° C and being substantially gel-free comprising about 95-35% by weight of units derived from 1,3-pentadiene, 1-50% by weight of units derived from 1,5,9-cyclododecatriene, and 0-40% by weight of units derived from at least one monoolefin containing 5 carbon atoms, said resin obtained by polymerizing a monomeric mixture comprising about 95-35% by weight of 1,3-pentadiene, 1-50% by weight of 1,5,9-cyclododecatriene, and 0-50% by weight of at least one monoolefin containing 5 carbon atoms, in the presence of a solvent containing at least 50% by weight of an aromatic hydrocarbon and about 0.1-5 parts by weight, per 100 parts by weight of the monomeric mixture of a Friedel-Crafts type metal halide catalyst selected from aluminum halide and boron trifluoride.
Claim 2
Dependent Claim
131 words
A hydrocarbon resin having a softening point of from about 100° to about 160° C and being substantially gel-free comprising about 95-35% by weight of units derived from 1,3-pentadiene, 1-50% by weight of units derived from 1,5,9-cyclododecatriene, and 0-40% by weight of units derived from at least one monoolefin containing 5 carbon atoms, said resin obtained by polymerizing a monomeric mixture comprising about 95-35% by weight of 1,3-pentadiene, 1-50% by weight of 1,5,9-cyclododecatriene, and 0-50% by weight of at least one monoolefin containing 5 carbon atoms, in the presence of a solvent containing at least 50% by weight of an aromatic hydrocarbon and about 0.1-5 parts by weight, per 100 parts by weight of the monomeric mixture of a Friedel-Crafts type metal halide catalyst selected from aluminum halide and boron trifluoride.
Claim 3
Dependent Claim
129 words
The hydrocarbon resin of claim 1 having a softening point of from about 100° to about 150° C comprising about 90-40% by weight of units derived from 1,3-pentadiene 2-40% by weight of units derived from 1,5,9-cyclododecatriene, and 4-25% by weight of units derived from at least one monoolefin containing 5 carbon atoms, said resin obtained by polymerizing a monomeric mixture comprising about 90-40% by weight of 1,3-pentadiene, 2-40% by weight 1,5,9-cyclododecatriene, and 5-30% by weight of at least one monoolefin containing 5 carbon atoms in the presence of a solvent containing at least 50% by weight of an aromatic hydrocarbon and about 0.1-5 parts by weight, per 100 parts by weight of the monomeric mixture of a Friedel-Crafts type metal halide catalyst selected from aluminum halide and boron trifluoride.
Claim 4
Dependent Claim
25 words
The hydrocarbon resin of claim 2 wherein said monoolefin is at least one member selected from the group consisting of cyclopentene, 2-methyl-2-butene, 1-pentene and 2-pentene.
Claim 5
Dependent Claim
11 words
The hydrocarbon resin of claim 2 wherein said monoolefin is cyclopentene.
Claim 6
Dependent Claim
86 words
The hydrocarbon resin of claim 2, wherein said resin is obtained by polymerizing a monomeric mixture comprising about 85-45% by weight of 1,3-pentadiene, 5-30% by weight of 1,5,9-cyclododecatriene, and 10-25% by weight of at least one monoolefin containing 5 carbon atoms in the presence of a solvent containing at least 50% by weight of an aromatic hydrocarbon and about 0.1-5 parts by weight, per 100 parts by weight of the monomeric mixture of a Friedel-Crafts type metal halide catalyst selected from aluminum halide and boron trifluoride.
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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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |