EP0183493A2
Expired / Lapsed
EP
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Modified ethylenic random copolymer
Assignee: Mitsui Chemicals Inc
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Filing: 1985-11-21
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Granted: —
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Expires: 2005-11-21
Abstract
Abstract A modified ethylenic random copolymer derived from 100 parts by weight of a base ethylenic random copolymer composed of 25 to 75 mole% of ethylene and 75 to 25 mole% of the alpha-olefin having 3 to 20 carbon atoms and grafted thereto, (a) 0.2 to 50 parts by weight of an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride or ester thereof, (b) 0.2 to 200 parts by weight of a styrene-type hydrocarbon having 8 to 12 carbon atoms, or (c) 0.2 to 300 parts by weight of an unsaturated silane compound having 2 to 20 carbon atoms, said modified ethylenic random copolymer having an intrinsic viscosity [η], measured in decalin at 135°C, of 0.01 to 1.5 dl/g and a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of not more than 4.
Inventors
- 👤 Tatsuo Kinoshita
- 👤 Syuji Minami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 15:57
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02; C08F255/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
142 words
A modified ethylenic random copolymer derived from 100 parts by weight of a base ethylenic random copolymer composed of 25 to 75 mole% of ethylene and 75 to 25 mole% of an alpha-olefin having 3 to 20 carbon atoms and grafted thereto, as modifier, (a) 0.2 to 50 parts by weight of an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride or ester thereof, (b) 0.2 to 200 parts by weight of a styrene-type hydrocarbon having 8 to 12 carbon atoms or (c) 0.2 to 300 parts by weight of an unsaturated silane compound having 2 to 20 carbon atoms, said modified ethylenic random copolymer having an intrinsic viscosity [o], measured in decalin at 135 0 C, of 0.01 to 1.5 dl/g and a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of not more than 4.
Claim 2
Dependent Claim
142 words
A modified ethylenic random copolymer derived from 100 parts by weight of a base ethylenic random copolymer composed of 25 to 75 mole% of ethylene and 75 to 25 mole% of an alpha-olefin having 3 to 20 carbon atoms and grafted thereto, as modifier, (a) 0.2 to 50 parts by weight of an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride or ester thereof, (b) 0.2 to 200 parts by weight of a styrene-type hydrocarbon having 8 to 12 carbon atoms or (c) 0.2 to 300 parts by weight of an unsaturated silane compound having 2 to 20 carbon atoms, said modified ethylenic random copolymer having an intrinsic viscosity [o], measured in decalin at 135 0 C, of 0.01 to 1.5 dl/g and a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of not more than 4.
Claim 3
Dependent Claim
9 words
A copolymer according to claim 1 which is liquid.
Claim 4
Dependent Claim
39 words
A copolymer according to claim 1 or 2 wherein the base ethylenic random copolymer is composed of 30 to 70 mole% of the ethylene units and 70 to 30 mole% of the alpha-olefin having 3 to 20 carbon atoms.
Claim 5
Dependent Claim
56 words
A copolymer according to claim 1,2, or 3 wherein the base ethylenic random copolymer has at least one of the following properties: a molecular weight distribution (Mw/Mn) of from 1.2 to 2.5; a number average molecular weight of 400 to 8,000; a Z value of 15 to 250; and a 6 value of 0 to 2.
Claim 6
Dependent Claim
19 words
A copolymer according to any one of the preceding claims wherein the alpha-olefin has 3 to 10 carbon atoms.
Claim 7
Dependent Claim
11 words
A copolymer according to claim 5 wherein the alpha-olefin is propylene.
Claim 8
Dependent Claim
33 words
A copolymer according to any one of the preceding claims wherein the modifier is (a) acrylic acid, methacrylic acid, maleic acid, maleic anhydride or glycidyl methacrylate, (b) styrene or (c) trimethoxyvinylsilane or tri-ethoxyvinylsilane.
Claim 9
Dependent Claim
39 words
A copolymer according to any one of the preceding claims wherein the amount of the modifier is (a) 0.5 to 40 parts by weight, (b) 0.5 to 150 parts by weight or (c) 0.5 to 200 parts by weight.
Claim 10
Dependent Claim
21 words
A copolymer according to any one of the preceding claims which has an intrinsic viscosity [η] of 0.01 to 1.0 dl/g.
Claim 11
Dependent Claim
17 words
A copolymer according to claim 9 which has an instrinsic viscosity [t] of 0.01 to 0.3 dl/g.
Claim 12
Dependent Claim
22 words
A copolymer according to any one of the preceding claims which has a molecular weight distribution (Mw/Mn) of from 1.2 to 3.
Claim 13
Dependent Claim
25 words
Use of a copolymer as claimed in any one of the preceding claims as a modifier or a modifying aid for a rubber polymer composition.
Claim 14
Dependent Claim
41 words
The use of claim 12 wherein the rubbery polymer composition comprises (A) an ethylene/alpha-olefin random copolymer or a blend of (A) with (B) at least one rubbery polymer selected from natural rubber, chloroprene rubber, isoprene rubber, butadiene rubber and acrylic rubber.
References Cited (Backward Citations)
No citation records indexed.
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