Copolymers having pendant functional thymine groups
AssigneePolaroid Corporation
InventorsJ. Michael Grasshoff, Lloyd D. Taylor, John C. Warner
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Abstract
Multi-functional vinylbenzyl and vinylphenyl pendant thymine (and uracil) groups are disclosed. The monomers can be used for the production of polymers useful in photoresist and other compositions as a function of the crosslinking reactivity of the pendant groups. Images in polymer are provided by exposure to actinic radiation (e.g., UV), containing such polymer and by solvent removal of non-exposed regions.
Claims13
A crosslinked copolymer containing first polymerized repeating units from a first polymerizable monomer according to the formula ##STR12## wherein each of R.sup.1 and R.sup.2 is hydrogen or alkyl;
- Z is hydrogen or methyl;
- and n is an integer 1 or 2;
- and
- copolymerized repeating units from an ethylenically unsaturated copolymerizable monomer different from said first monomer;
- said crosslinked copolymer containing photo-crosslinks formed by photolysis and dimerization and cyclization of photoreactive unsaturated bonds at positions 5 and 6 of said first polymerized repeating units.
Dependencies are inferred from the claim text.