Polymers crosslinkable by electron beams
AssigneeBayer Aktiengesellschaft
InventorHans J. Rosenkranz
Life of this patent
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Abstract
Resist lacquers crosslinking under the influence of electron beams of which the active constituents is a copolymer of (A) 10 to 90 moles of a C.sub.1 -C.sub.20 alkyl ester of acrylic acid and/or methacrylic acid; (B) 0 to 50 moles and, preferably 10 to 50 moles, of a hydroxyl-group-containing C.sub.1 -C.sub.10 alkyl ester of acrylic and/or methacrylic acid, and (C) 3 to 70 moles and, preferably 10 to 50 moles, of a monomer which contains the structural element ##STR1## wherein ##STR2## --O-- and Ar is an aromatic radical.
Claims12
A method of crosslinking a coating on a substrate, said coating comprising a copolymer of (A) 10 to 90 moles of a C.sub.1 -C.sub.20 alkyl ester of at least one member of the group consisting of acrylic acid and methacrylic acid;
- (B) 0 to 50 moles of a hydroxyl group containing C.sub.1 -C.sub.10 alkyl ester of at least one member selected from the group consisting of acrylic acid and methacrylic acid and (C) 3 to 70 moles of a monomer of the formula ##STR6## wherein Ar is a monofunctional to hexafunctional aryl radical having from 6 to 18 carbon atoms and consisting of from 1 to 3 rings;
- R is hydrogen, alkyl having 1 to 12 carbon atoms, halogen, alkoxy having 1 to 12 carbon atoms, --O--(CH.sub.2 CH.sub.2 --O).sub.1-4 --H, --O--(CHCH.sub.3 --CH.sub.2 O).sub.1-4 --H, nitro, --COOH, --CHO, --COO-alkyl wherein said alkyl has 1 to 12 carbon atoms, --CN, --CONH.sub.2, --CONH-alkyl wherein said alkyl has 1 to 12 carbon atoms, --CON(alkyl).sub.2 wherein alkyl has from 1 to 12 carbon atoms or --NHCO-alkyl wherein said alkyl has 1 to 12 carbon atoms and n is an integer of from 1 to 5, said method comprising subjecting said coating on said substrate to electron beam radiation at a dose of 10.sup.-6 to 10.sup.-3 coulombs/cm.sup.2 at an energy of from 1,000 to 100,000 eV.
Dependencies are inferred from the claim text.