Patent ID: 6946234
Filing Date: 2005-09-20
Classification: B41C,B41M,G03F

Abstract:
1. A positive ultraviolet sensitive resist, a portion of which when subsequently irradiated with ultraviolet rays is soluble or dispersible in an organic solvent or an aqueous developing solution, and whose unirradiated portion is substantially insoluble and undispersible in an organic solvent or an aqueous developing solution, said resist obtained by heating a composition comprising a base polymer, an ether-bond-containing olefinic unsaturated compound and an acid-generating agent, where the base polymer is a copolymer comprising the structural units represented by formula (1): formula (2): where R where R wherein a, b and c are 0.05 to 0.7, 0.15 to 0.8 and 0.01 to 0.5, respectively and a+b+c=1.