Peroxide and radiation curable compositions containing isobutylenene copolymers having acrylate functionality
First Claim
1. A peroxide or radiation curable composition comprising:
- (i) a copolymer of an isoolefin of 4 to 7 carbon atoms and para-alkylstyrene comonomer;
acrylate functionality nucleophilically grafted randomly onto a portion of the para-alkyl groups of the copolymer;
heat stabilizing free radical scavenger functionality nucleophically grafted randomly onto a second portion of the para-alkyl groups of the copolymer; and
(ii) a filler.
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Accused Products
Abstract
The invention relates to peroxide- or radiation-curable copolymer containing compositions and to the resulting radiation- or peroxide- cured compositions. The compositions may optionally contain a reinforcing filler. Copolymers employed in the compositions are acrylate modified copolymers of an isoolefin of 4 to 7 carbon atoms and para-alkylstyrene comonomers. Since the percentage of extractables from the cured composition is negligible, the cured compositions are suitable for use in the manufacture of a variety of high purity rubber goods used in the pharmaceutical and health care industries. In addition, the compositions may be employed as condenser packings and as food contact materials or wire cable insulation materials. Further, the cured composition may be employed in the manufacture of high purity hoses.
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Citations
5 Claims
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1. A peroxide or radiation curable composition comprising:
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(i) a copolymer of an isoolefin of 4 to 7 carbon atoms and para-alkylstyrene comonomer; acrylate functionality nucleophilically grafted randomly onto a portion of the para-alkyl groups of the copolymer; heat stabilizing free radical scavenger functionality nucleophically grafted randomly onto a second portion of the para-alkyl groups of the copolymer; and (ii) a filler. - View Dependent Claims (2, 3)
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4. A cured composition comprising:
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(i) a copolymer of an isoolefin of 4 to 7 carbon atoms and para-alkylstyrene comonomer; acrylate functionality nucleophilically grafted randomly onto a portion of the para-alkyl groups of the copolymer;
heat stabilizing free radical scavenger functionality nucleophically grafted randomly onto a second portion of the para-alkyl groups of the copolymer; and(ii) a filler. - View Dependent Claims (5)
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Specification