EP0311299A1
Expired / Lapsed
EP
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A diolefin polymer or copolymer and a process for the production of the same
Assignee: Tonen General Sekiyu KK
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Filing: 1988-09-29
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Granted: —
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Expires: 2008-09-29
Abstract
Abstract 1,4-addition polymers or copolymers of diolefins useful as a functional or active polymer is provided which comprises, in combination, the following recurring units (A) and (B): wherein n = 4 to 6 and A/B mole ratio = 0 to 98/100 to 2.
Inventors
- 👤 Yoshiharu Doi
- 👤 Satoshi Ueki
- 👤 Kazuo Soga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 15:22
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
31 words
A diolefin polymer or copolymer comprising, in combination, the following recurring units (A) and (B): wherein n = 4 to 6 and A/B mole ratio = 0 to 98/100 to 2.
Claim 2
Dependent Claim
31 words
A diolefin polymer or copolymer comprising, in combination, the following recurring units (A) and (B): wherein n = 4 to 6 and A/B mole ratio = 0 to 98/100 to 2.
Claim 3
Dependent Claim
21 words
A diolefin polymer or copolymer as claimed in claim 1, wherein the recurring units (A) and (B) form a random linkage.
Claim 4
Dependent Claim
31 words
A diolefin polymer or copolymer as claimed in claim 1 or claim 2, wherein the number-average molecular weight is in the range of from 2,000 to 500,000 in terms of propylene.
Claim 5
Dependent Claim
32 words
A diolefin polymer or copolymer as claimed in any one of the preceding claims wherein the weight-average molecular weight to number-average molecular weight ratio is in the range of 1.05 to 1.4.
Claim 6
Dependent Claim
103 words
A process for the production of a diolefin polymer or copolymer as claimed in claim 1, which comprises polymerizing a diolefin represented by the general formula CH₂=CH CH₂ CH=CH₂ wherein n = 4 to 6 or copolymerizing the said diolefin with propylene at a temperature of -50°C or below in the presence of a catalyst consisting of a vanadium compound represented by the general formula, wherein R¹ to R³ are hydrogen atoms or hydrocarbon groups having 1 to 8 carbon atoms, at least one of which must be hydrogen atom but all of which must not be hydrogen atoms, and an organoaluminum compound.
Claim 7
Dependent Claim
19 words
A process as claimed in claim 5, wherein the vanadium compound is vanadium (acetylacetonato)₃, vanadium (2-methyl-1,3-butanedionato)₃ or vanadium (1,3-butanedionato)₃.
Claim 8
Dependent Claim
55 words
A process as claimed in claim 5 or claim 6, wherein the organoaluminium compound is represented by the general formula R n AIX 3-n wherein R is an alkyl group or aryl group, X is a halogen atom or hydrogen atom and n is any numeral in the range of 1 ≦ n < 3.
Claim 9
Dependent Claim
40 words
A process as claimed in any one of claims 5 to 7 wherein the vanadium compound and organoaluminium compound are used in the proportion of 1 to 1,000 moles of the organoaluminium compound to 1 mole of the vanadium compound.
Claim 10
Dependent Claim
34 words
A process as claimed in any one of claims 5 to 8 wherein the vanadium compound is used in the proportion of 1 x 10⁻⁵ to 0.5 mole to 1 mole of the diolefin.
Claim 11
Dependent Claim
36 words
A process as claimed in claim 5, wherein the polymerization or copolymerization is carried out in the presence of a solvent which is inert to the polymerization or copolymerization and liquid during the polymerization or copolymerization.
Claim 12
Dependent Claim
18 words
A process as claimed in claim 10, wherein the solvent is propane, butane, pentane, hexane, heptane or toluene.
Claim 13
Dependent Claim
21 words
A process as claimed in claim 10, wherein the solvent is the propylene which is to be copolymerized in the reaction.
References Cited (Backward Citations)
US3435020A
Cited
US3472830A
Cited
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