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US 5,459,174 AGranted
Radiation curable isoolefin copolymers
OwnerNatalie A. Merrill, Hsian-Chang Wang +1inventors
InventorsNatalie A. Merrill, Hsian-Chang Wang, Anthony J. Dias
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Abstract
A radiation curable functionalized polymer is disclosed. The functionalized polymer is a copolymer of an isoolefin of 4 to 7 carbon atoms and para-alkylstyrene, wherein the para-alkylstyrene is functionalized with an acrylate or a mixture of acrylates and/or a photosensitizer and/or other functional groups at the para-alkyl groups of the para-alkylstyrene.
Claims36
A radiation curable functionalized copolymer comprising:
- an isoolefin of 4 to 7 carbon atoms and a para-alkylstyrene comonomer said copolymer having acrylate functionality grafted randomly onto at least 0.5 to 55 mole % of the para-alkyl groups of the copolymer and
- said copolymer has 1 ppm to 3 wt.%, based upon the weight of the copolymer, of photosensitive functionality randomly grafted onto a portion of the para-alkyl groups of the copolymer.
A radiation curable functionalized blend, comprising:
- a copolymer of an isoolefin of 4 to 7 carbon atoms and a para-alkylstyrene comonomer said copolymer having acrylate functionality grafted randomly onto at least 0.5 to 55 mole% of the para-alkyl groups of the copolymer, and wherein the acrylate is represented by the formula:
- ##STR32## wherein R.sup.1 and R.sup.2 are independently hydrogen or a C.sub.1 to C.sub.20 alkyl, R.sup.3 is hydrogen or a C.sub.1 to C.sub.20 alkyl or an unsaturated C.sub.1 to C.sub.20 alkyl;
- and
- blended with 1 ppm to 3 wt. %, based upon the weight of the copolymer, of photosensitive functionality.
1 more element
Dependencies are inferred from the claim text.