Ppg Industries Ohio, Inc.

Gerald W Gruber

Gregory J McCollum

Ronald R Ambrose

Lawrence G Anderson

Karen A Barkac

Kurt A Humbert

John W Burgman

David A Diehl

Ljiljana Maksimovic

James E Jones

Robert D Lippert

Randal L Campbell

Novel compositions comprising photoactive polymers comprising a dinitrobenzyl group in conjunction with a photoacid generator are disclosed. In one embodiment, the photoacid generator is a diazide and/or a sulfonyl aceto carbonyl compound. The photoacid generators are typically used in amounts of 10 weight percent or less. The compositions find particular application in storage stable, pH stable, and water stable positive photoresist compositions. Such compositions demonstrate reduced process time as compared with similar compositions lacking the photoacid generator. Methods for using these compositions are also disclosed.

Positive photoresist compositions having enhanced processing time

Curable film-forming compositions containing epoxy functional copolymers, polycarboxylic acid crosslinking agents, and triaryltin compound having the chemical structure of (Ar).sub.3 SnOR wherein the aryl groups are the same or different and at least one aryl group is substituted with at least one atom or group selected from the group consisting of carbon, nitrogen, oxygen, sulfur, phosphorous, silicon and halogen and R is selected from the group consisting of hydrogen, alkyl, and acyl groups are disclosed. The compositions do not release benzene during cure. The compositions may be powder or liquid and are useful as clear coats, particularly in a color-plus-clear composite coating system.

Color-plus-clear composite coating composition containing tin catalysts

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Mars, PA, United States of America

Gerald W Gruber