Photoimageable compositions containing substituted 1, 2 dihalogenated ethanes for enhanced printout image
First Claim
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1. A photoimageable composition which comprises:
- (a) a substituted 1,2-dihalogenated ethane having the structure;
##STR5## wherein;
X1 and X2 are independently either bromine or chlorine;
R1 is C6 -C10 aryl, or aroyl, and;
R2 is C6 -C10 aryl, aroyl, acyl, or an electron withdrawing group other than halogen; and
R3 and R4 are independently C6 -C10aryl, C1 -C10 alkyl, H, or an electron withdrawing group other than halogen, with the proviso that any two of R1, R2, R3 and R4 groups can form a 5- to 8-membered ring structure;
with the proviso that when R1 or R3 is C6 -C10 aryl, R2 and R4 are not aryl;
(b) a leuco dye; and
(c) a photoinitiator or photoinitiator system.
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Abstract
Photoimageable compositions, photoimageable resist compositions, and photoimageable resist elements that afford enhanced, storage stable printout images are disclosed which include a substituted 1,2-dibromoethane and a leuco dye.
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10 Claims
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1. A photoimageable composition which comprises:
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(a) a substituted 1,2-dihalogenated ethane having the structure;
##STR5## wherein;
X1 and X2 are independently either bromine or chlorine;R1 is C6 -C10 aryl, or aroyl, and; R2 is C6 -C10 aryl, aroyl, acyl, or an electron withdrawing group other than halogen; and R3 and R4 are independently C6 -C10 aryl, C1 -C10 alkyl, H, or an electron withdrawing group other than halogen, with the proviso that any two of R1, R2, R3 and R4 groups can form a 5- to 8-membered ring structure; with the proviso that when R1 or R3 is C6 -C10 aryl, R2 and R4 are not aryl; (b) a leuco dye; and (c) a photoinitiator or photoinitiator system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification