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US 5,376,503 AGranted
UV/EB curable copolymers for lithographic and corrosion-resistant coating applications
AssigneeExxon Chemical Patents Inc.
InventorsJay D. Audett, Kenneth O. McElrath
Life of this patent
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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.
Claims8
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.
1 more element
A coating composition comprising:
- a) 50 to 100 parts by weight of a random copolymer of a C.sub.4 to C.sub.7 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;
- and
- b) a tackifier.
1 more element
Dependencies are inferred from the claim text.