Light-sensitive mixture for producing positive or negative relief copies
AssigneeHoechst Aktiengesellschaft
InventorPaul Stahlhofen
Life of this patent
Estimating the term…
Abstract
A light-sensitive mixture is disclosed which contains a) a compound having at least one acid-cleavable C-O-C bond, b) a compound which forms a strong acid on exposure and c) a binder which is insoluble in water but soluble in aqueous alkaline solutions and d) a compound having at least one polymerizable or light-crosslinkable olefinic double bond. The mixture is suitable for producing printing plates, relief copies and photoresists, becoming soluble in alkaline developers on short exposure and insoluble on prolonged exposure as a result of crosslinking.
Claims9
A light-sensitive mixture comprising:
- (a) a compound having at least one acid-cleavable C--O--C bond, present in an amount of 4 to 50 percent by weight, based on total solids;
- (b) a compound which forms a strong acid on exposure, present in an amount of about 0.5 to 20 percent by weight, based on total solids;
- (c) a binder which is insoluble in water but soluble in aqueous alkaline solutions, present in an amount of about b 30 to 90 percent by weight, based on total solids;
- and
- a monomeric compound having at least one polymerizable or light-crosslinkable olefinic double bond adjacent to a CO group, present in an amount of about 2 to 30 percent by weight, based on total solids.
A light-sensitive recording material comprising a base material and a light-sensitive layer comprising
- (a) a compound having at least one acid-cleavable C--O--C bond;
- (b) a compound which forms a strong acid on exposure;
- (c) a binder which is insoluble in water but soluble in aqueous alkaline solutions;
- and
- (d) a compound having at least one polymerizable or light-crosslinkable olefinic double bond.
Dependencies are inferred from the claim text.