Water based photosensitive composition with hydrolyzate of mammal collagen

摘要

A water based photosensitive composition comprises a hydrolyzate of a mammal collagen and a photosensitizer serving to cross-link the hydrolyzate when exposed to an active light. The hydrolyzate has a number-average molecular weight, Mn, of 2,000 to 30,000 and an intrinsic viscosity, [ eta ], of 0.060 to 0.155 dl/g in a 0.15 mole citric acid buffer solution maintained at 40 DEG C. Also, the hydrolyzate is capable of maintaining the formability of the collagen fold. A photoresist pattern formed by using the composition exhibits a high resolution, a good dyeing property and a strong corrosion resistance.