UV/EB curable copolymers for lithographic and corrosion-resistant coating applications
First Claim
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1. A coating composition comprising:
- a) 50 to 100 parts by weight of a random copolymer of an isoolefin having 4 to 7 carbon atoms and a para-alkylstyrene, said isoolefin comprising 10 to 99.5 wt. % of said copolymer and said para-alkylstyrene comprises from 0.5 to 90 wt. % of said copolymer, wherein about 0.5 to 55 wt. % of said polymer comprises para-alkylstyrene monomers having a photo-initiator substituted on the pendent alkyl group; and
b) 0 to 50 parts by weight of a tackifier;
a polymer which does not contain a photo-initiator or mixtures of said tackifier and said polymer.
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Abstract
A lithographic coating and method of framing a lithographic image are disclosed. The method comprises coating at least a portion of a surface of an article with a radiation-crosslinkable polymer, and exposing the coated surface to a pattern of radiation to crosslink the polymer in a lithographic image. 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 a radiation reactive group at the para-alkyl group of the para-alkylstyrene.
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8 Claims
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1. A coating composition comprising:
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a) 50 to 100 parts by weight of a random copolymer of an isoolefin having 4 to 7 carbon atoms and a para-alkylstyrene, said isoolefin comprising 10 to 99.5 wt. % of said copolymer and said para-alkylstyrene comprises from 0.5 to 90 wt. % of said copolymer, wherein about 0.5 to 55 wt. % of said polymer comprises para-alkylstyrene monomers having a photo-initiator substituted on the pendent alkyl group; and b) 0 to 50 parts by weight of a tackifier;
a polymer which does not contain a photo-initiator or mixtures of said tackifier and said polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A coating composition comprising:
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a) 50 to 100 parts by weight of a random copolymer of a C4 to C7 isoolefin and a para-alkylstyrene said para-alkylstyrene having the general structure;
##STR49## wherein R and R'"'"' are independently selected from the group consisting of hydrogen, alkyl and primary and secondary alkyl halides and is selected from the group comprising hydrogen, a photo-initiator, X or Z wherein X is either bromine or chlorine and Z is a functionality which is not a photo-initiator and which contains oxygen, sulfur, silicon, nitrogen, carbon or metal, said metal selected from the group consisting of sodium, potassium, lithium and magnesium wherein said para-alkylstyrene containing photo-initiator comprises from about 0.5 to 55 wt. % of said copolymer, said para-alkylstyrene containing X comprises 0 to 55 wt. % of said copolymer and said para-alkylstyrene containing Z comprises 0 to 55 wt. % of said copolymer; andb) a tackifier.
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Specification