Water based photosensitive composition with hydrolyzate of mammal collagen
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United States of America Patent
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Feb 21, 1984
Grant Date -
N/A
app pub date -
Nov 13, 1981
filing date -
Nov 18, 1980
priority date (Note) -
Expired
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Abstract
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.degree.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.
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