Patent US4039733A successfully refreshed from Google Patents.
US4039733A
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Novel petroleum resin formed by a catalyst system containing (a) organoaluminum compound and (b) alkyl halide or hydrogen halide as cocatalyst
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1975-04-21
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Granted: 1977-08-02
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Expires: 1995-04-21
Abstract
Abstract A petroleum resin produced by copolymerizing a monomer composition comprising (1) a mixture of 20 to 80 parts by weight of a so-called spent C 4 - or C 5 -fraction obtained by removing most of the dienic constituents from a fraction mainly of four or five carbon atoms formed in petroleum cracking and 80 to 20 parts by weight of styrene and/or a styrene derivative, and (2) 0.5 to 10 parts by weight of divinylbenzene for 100 parts by weight of the monomeric constituents contained in said mixture (1), with a catalyst system comprising an organoaluminum compound represented by the general formula AlR n X 3 -n (wherein R is an alkyl group having 1 to 4 carbon atoms, X is a halogen atom, and n is a positive number from 1 to 2) as main catalyst and an alkyl halide or a hydrogen halide as co-catalyst in a hydrocarbon solvent at a temperature of 0° to 60° C.
Inventors
- 👤 Ken-ichi Kudo
- 👤 Yoshihiko Kitagawa
- 👤 Hideyuki Kuribayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:52
CPC Classifications
C; C08; C08F; C08F240/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
164 words
A process for manufacturing a petroleum resin, characterized by copolymerizing a monomer composition comprising (1) a mixture of 20 to 80 parts by weight of a so-called spent C 4 - or C 5 -fraction obtained by removing most of the dienic constituents from a fraction mainly of four or five carbon atoms formed in petroleum cracking and 80 to 20 parts by weight of styrene and/or a styrene derivative, and (2) 0.5 to 10 parts by weight of divinylbenzene for 100 parts by weight of the monomeric constituents contained in said mixture (1), with a catalyst system comprising an organoaluminum compound represented by the general formula AlR n X 3 -n (wherein R is an alkyl group having 1 to 4 carbon atoms, X is a halogen atom, and n is a positive number from 1 to 2) as main catalyst and an alkyl halide or a hydrogen halide as co-catalyst in a hydrocarbon solvent at a temperature of 0° to 60° C.
Claim 2
Dependent Claim
164 words
A process for manufacturing a petroleum resin, characterized by copolymerizing a monomer composition comprising (1) a mixture of 20 to 80 parts by weight of a so-called spent C 4 - or C 5 -fraction obtained by removing most of the dienic constituents from a fraction mainly of four or five carbon atoms formed in petroleum cracking and 80 to 20 parts by weight of styrene and/or a styrene derivative, and (2) 0.5 to 10 parts by weight of divinylbenzene for 100 parts by weight of the monomeric constituents contained in said mixture (1), with a catalyst system comprising an organoaluminum compound represented by the general formula AlR n X 3 -n (wherein R is an alkyl group having 1 to 4 carbon atoms, X is a halogen atom, and n is a positive number from 1 to 2) as main catalyst and an alkyl halide or a hydrogen halide as co-catalyst in a hydrocarbon solvent at a temperature of 0° to 60° C.
Claim 3
Dependent Claim
32 words
A process for manufacturing a petroleum resin according to claim 1, wherein total dienic constituents content of the spent C 4 - or C 5 -fraction is 5% by weight or less.
Claim 4
Dependent Claim
82 words
A process for manufacturing a petroleum resin according to claim 1, wherein the monomer composition comprises (1) a mixture of 20 to 80 parts by weight of a spent C 4 -fraction obtained by removing butadiene from a C 4 -fraction formed in petroleum cracking and 80 to 20 parts by weight of styrene and/or a styrene derivative, and (2) 0.5 to 10 parts by weight of divinylbenzene for 100 parts by weight of the monomeric constituents contained in said mixture (1).
Claim 5
Dependent Claim
32 words
A process for manufacturing a petroleum resin according to claim 1, wherein the styrene and/or the styrene derivative is styrene, α-methylstyrene, vinyltoluene, dimethylstyrene, or a mixture of two or more of these.
Claim 6
Dependent Claim
45 words
A process for manufacturing a petroleum resin according to claim 1, wherein the mixture (1) comprises 40 to 60 parts by weight of the spent C 4 - or C 5 -fraction and 60 to 40 parts by weight of styrene and/or a styrene derivative.
Claim 7
Dependent Claim
52 words
A process for manufacturing a petroleum resin according to claim 1, wherein 2 to 7 parts by weight of divinylbenzene is used for 100 parts by weight of the monomeric constituents contained in the mixture (1) comprising a spent C 4 - or C 5 -fraction and styrene and/or a styrene derivative.
Claim 8
Dependent Claim
23 words
A process for manufacturing a petroleum resin according to claim 1, wherein the organoaluminum compound is diethylaluminum chloride, ethylaluminum sesquichloride, or ethylaluminum dichloride.
Claim 9
Dependent Claim
31 words
A process for manufacturing a petroleum resin according to claim 1, wherein the amount to be used of the organoaluminum compound is 0.5 to 3% by weight based on monomeric constituents.
Claim 10
Dependent Claim
21 words
A process for manufacturing a petroleum resin according to claim 1, wherein the alkyl halide is tert-butyl chloride or tert-butyl bromide.
Claim 11
Dependent Claim
21 words
A process for manufacturing a petroleum resin according to claim 1, wherein the hydrogen halide is hydrogen chloride or hydrogen bromide.
Claim 12
Dependent Claim
30 words
A process for manufacturing a petroleum resin according to claim 1, wherein the molar ratio of the co-catalyst to the organoaluminum compound is in the range from 0.1 to 1.
Claim 13
Dependent Claim
46 words
A process for manufacturing a petroleum resin according to claim 1, wherein the hydrocarbon solvent is an aliphatic hydrocarbon selected from hexane, heptane, and other paraffins; an aromatic hydrocarbon selected from benzene, toluene, xylene, and ethylbenzene; cyclohexane, or a mixture of two or more of these.
Claim 14
Dependent Claim
31 words
A process for manufacturing a petroleum resin according to claim 1, wherein the weight ratio of the hydrocarbon solvent to the monomeric constituents is in the range from 0.5 to 2.0.
Claim 15
Dependent Claim
28 words
A process for manufacturing a petroleum resin according to claim 1, wherein the copolymerization is carried out at a temperature in the range from 10° to 50° C.
Claim 16
Dependent Claim
11 words
A petroleum resin obtained by the process according to claim 1.
Claim 17
Dependent Claim
25 words
A tackifier for hot-melt adhesives, adhesive tapes, synthetic rubbers, and sealants, which tackifier comprises the petroleum resin obtained by the process according to claim 1.
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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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |