EP0101930A2
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EP
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Cross linkable fluorine-containing elastomeric compositions
Assignee: Daikin Industries Ltd
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Filing: 1983-07-26
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Granted: —
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Expires: 2003-07-26
Abstract
Abstract @ An easily cross linkable fluorine-containing polymer comprising: (1) a polymeric chain comprising one or more polymer segments, at least one polymer segment of which consists of units of at least one fluorine-containing ethylenically unsaturated compound having 2 to 8 carbon atoms, or units of said fluorine-containing ethylenically unsaturated compound and at least one other monomer selected from the group consisting a fluorine-free ethylenically unsaturated compound having 2 to 4 carbon atoms and a fluorine-containing diene having 4 to 8 carbon atoms, (2) at least one bromine atom liberated from a brominated compound of the formula: RBr x (wherein R is a saturated hydrocarbon residue and x is a number corresponding to the bonding valency of the residue R) in an amount of 0.001 to 10% by weight based on the polymer weight and (3) a fragment of the brominated compound excluding the said liberated bromine atom therefrom, which are bonded to the polymeric chain, the polymer being prepared by polymerizing said fluorine-containing ethylenically unsaturated compound with or without said other monomer in the presence of a radical producing source and the brominated compound in at least one step.
Inventors
- 👤 Masaoyshi Tatemoto
- 👤 Masahiko Oka
- 👤 Hideo Kano
- 👤 Masayasu Tomoda
- 👤 Yutaka Ueta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 12:09
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F2438/00; C08F2438/01
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
189 words
An easily cross linkable fluorine-containing polymer comprising: (1) a polymeric chain comprising one or more polymer segments, at least one polymer segment of which consists of units of at least one fluorine-containing ethylenically unsaturated compound having 2 to 8 carbon atoms, or units of said fluorine-containing ethylenically unsaturated compound and at least one other monomer selected from the group consisting a fluorine-free ethylenically unsaturated compound having 2 to 4 carbon atoms and a fluorine-containing diene having 4 to 8 carbon atoms, (2) at least one bromine atom liberated from a brominated compound of the formula: RBr x (wherein R is a saturated hydrocarbon residue and x is a number corresponding to the bonding valency of the residue R) in an amount of 0.001 to 10 % by weight based on the polymer weight and (3) a fragment of the brominated compound excluding the said liberated bromine atom therefrom, which are bonded to the polymeric chain, the polymer being prepared by polymerizing said fluorine-containing ethylenically unsaturated compound with or without said other monomer in the presence of a radical producing source and the brominated compound in at least one step.
Claim 2
Dependent Claim
189 words
An easily cross linkable fluorine-containing polymer comprising: (1) a polymeric chain comprising one or more polymer segments, at least one polymer segment of which consists of units of at least one fluorine-containing ethylenically unsaturated compound having 2 to 8 carbon atoms, or units of said fluorine-containing ethylenically unsaturated compound and at least one other monomer selected from the group consisting a fluorine-free ethylenically unsaturated compound having 2 to 4 carbon atoms and a fluorine-containing diene having 4 to 8 carbon atoms, (2) at least one bromine atom liberated from a brominated compound of the formula: RBr x (wherein R is a saturated hydrocarbon residue and x is a number corresponding to the bonding valency of the residue R) in an amount of 0.001 to 10 % by weight based on the polymer weight and (3) a fragment of the brominated compound excluding the said liberated bromine atom therefrom, which are bonded to the polymeric chain, the polymer being prepared by polymerizing said fluorine-containing ethylenically unsaturated compound with or without said other monomer in the presence of a radical producing source and the brominated compound in at least one step.
Claim 3
Dependent Claim
23 words
The fluorine-containing polymer according to claim 1, wherein the content of bromine in the polymer is from 0.01 to 5 % by weight.
Claim 4
Dependent Claim
20 words
The fluorine-containing polymer according to claim 1, wherein R is a saturated hydrocarbon group having 1 to 8 carbon atoms.
Claim 5
Dependent Claim
13 words
The fluorine-containing polymer according to. claim 1, wherein x is 1 or 2.
Claim 6
Dependent Claim
14 words
The fluorine-containing polymer according to claim 1, wherein R is a saturated fluorohydrocarbon group.
Claim 7
Dependent Claim
17 words
The fluorine-containing polymer according to claim 1, wherein the polymeric chain comprises at least two polymer segments.
Claim 8
Dependent Claim
27 words
The fluorine-containing polymer according to claim 1, wherein the polymeric chain comprises an elastomeric random copolymer of vinylidene fluoride with at least one other fluoroolefin copolymerizable therewith.
Claim 9
Dependent Claim
32 words
A cross linking composition comprising a mixture of (A) the fluorine-containing polymer according to claim 1 and (B) at least one cross linking agent in a weight ratio of 100 : 0.05-10.
Claim 10
Dependent Claim
72 words
The cross linking composition according to claim 8, wherein the cross linking agent is one selected from the group consisting of organic peroxide, polyamines and their salts, polyhydroxy compounds having an enol type hydroxyl group and dihydroxy compound of the formula: R"(CH 2 0H) 2 (wherein R" is a polyfluoroalkylene or perchlorofluoroalkylene group having 1 to 20 carbon atoms) and their alkali metal salts, and polythiols and their alkali metal . salts.
Claim 11
Dependent Claim
37 words
The cross linking composition according to claim 8, wherein the component (A) is a fluorine-containing elastomeric copolymer in which the polymeric chain comprises a random copolymer of vinylidene fluoride with at least one other fluoroolefin copolymerizable therewith.
Claim 12
Dependent Claim
17 words
The cross linking composition according to claim 9, wherein the cross linking agent is the organic peroxide.
Claim 13
Dependent Claim
19 words
The cross linking composition according to claim 9, wherein the cross linking agent is the polyamine or its salt.
Claim 14
Dependent Claim
52 words
The cross linking composition according to claim 9, wherein the cross linking agent is the polyhydroxy compounds having an enol type hydroxyl group or dihydroxy compound of the formula: R"(CH 2 0H) 2 (wherein R" is a polyfluoroalkylene or perchlorofluoroalkylene group having 1 to 20 carbon atoms) or their alkali metal salts.
Claim 15
Dependent Claim
21 words
The cross linking composition according to claim 9, wherein the cross linking agent is the polithiol or its alkali metal salt.
Claim 16
Dependent Claim
15 words
The cross linking composition according to . claim 8, which further comprises an acid acceptor.
Claim 17
Dependent Claim
19 words
The cross linking composition according to claim 15, wherein the acid acceptor is a divalent metal oxide or hydroxide.
Claim 18
Dependent Claim
15 words
- The cross linking composition according to claim 8, which further comprises an accelerating agent.
Claim 19
Dependent Claim
40 words
The cross linking composition according to claim 17, wherein the accelerating agent is one selected from the group consisting of tertiary amines, trisubstituted amidines, pentasubstituted guanidines and their organic or inorganic acid salts, quarternary ammonium salts and quarternary phosphonium salts.
Claim 20
Dependent Claim
20 words
The cross linking composition according to claim 8, which further comprises a cross linking aid or a co-cross linking agent.
Claim 21
Dependent Claim
22 words
The cross linking composition according to claim 19, wherein the cross linking aid or the co-cross linking agent is a polyfunctional compound.
References Cited (Backward Citations)
No citation records indexed.
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