The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 1997
Filed:
Oct. 28, 1994
Mineo Nishi, Kitakyushu, JP;
Koji Nakano, Kitakyushu, JP;
Keisuke Nakano, Kitakyushu, JP;
Iwao Matsuo, Osaka, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A photosensitive resin composition comprising an alkali-soluble resin, a quinonediazide-type photosensitive compound and a solvent, wherein the photosensitive compound comprises 1 a quinonediazide sulfonate of a novolak resin (A) of the following formula (i) having a weight average molecular weight of from 600 to 2,200 or a novolak resin (B) of the following formula (ii) having a weight average molecular weight of from 600 to 2,200, and 2 a quinonediazide sulfonate of a hydroxybenzophenone (C) of the following formula (iii): ##STR1## wherein each of R.sup.1 and R.sup.4 is an alkyl group, R.sup.2 is an alkyl group or an aryl group, R.sup.3 is a hydrogen atom or an alkyl group, each of u and v is an integer of from 0 to 3, provided that when each of R.sup.1 to R.sup.4 is present in a plurality, the plurality of each of R.sup.1 to R.sup.4 may be the same or different, and each of k and l is a number of at least 0, provided that k:l=1:9 to 10:0; ##STR2## wherein R.sup.5 is a hydroxyl group or a alkyl group, each of R.sup.6 and R.sup.9 is a hydrogen atom, an alkyl group or an aryl group, each of R.sup.7 and R.sup.10 is a hydrogen atom or an alkyl group, R.sup.8 is an alkyl group, x is an integer of from 0 to 2, y is an integer of from 0 to 3, provided that when each of R.sup.5 to R.sup.10 is present in a plurality, the plurality of each of R.sup.5 to R.sup.10 may be the same or different, and each of m and n is a number of at least 0, provided that m:n=10:0 to 6:4; ##STR3## wherein each of p and q is an integer of at least 0, provided that 3.ltoreq.p+q.ltoreq.6.