Liquid or paste photosensitive composition containg aromatic diazo compound and lactic acid, hydroxyacetic acid or mixture thereof
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United States of America Patent
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Oct 17, 1995
Issued Date -
N/A
app pub date -
Feb 27, 1995
filing date -
Nov 19, 1991
priority date (Note) -
Expired
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Abstract
A photosensitive composition including a water-soluble aromatic diazo compound having at least two diazo groups and lactic acid, hydroxyacetic acid or, a mixture thereof in an amount of at least one third by weight of the diazo compound. The photosensitive composition is in the form of a liquid or paste, is thus easy to handle, is suitable for use in the production of photosensitive printing plates, and has good storage stability.
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