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US 5,208,135 AGranted
Preparation and use of dyes
AssigneeMinnesota Mining and Manufacturing Company
InventorsRanjan C. Patel, Tran V. Thien, David Warner
Life of this patent
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Abstract
Compounds having a utility as photosensitive dyes in photocurable polymer based imaging systems having a nucleus of general formula (I): ##STR1## wherein: n is 1 or 2, Y is selected from the group consisting of 0 and ##STR2## Z is selected from the group consisting of 0.sup..crclbar. and ##STR3## M.sup..sym. is a cation.
Claims19
A compound having a nucleus of general formula (I):
- ##STR31## wherein:
- n is 1 or 2,
- Y is selected from the group consisting of 0 and ##STR32## Z is selected from the group consisting of 0.sup..-+. and ##STR33## M.sup..sym. is a cation.
A photosensitive element comprising a layer of a photocurable composition comprising:
- (a) a compound having a nucleus of general formula (I):
- ##STR39## wherein:
- n is 1 or 2,
- Y is selected from the group consisting of 0 and ##STR40## Z is selected from the group consisting of 0.sup..crclbar. and ##STR41## M.sup.+ is a cation. (b) an iodonium salt, and
- (c) a free-radical curable resin.
2 more elements
A compound having the formula:
- ##STR43## wherein:
- n is 1 or 2,
- Y is selected form the group consisting of ##STR44## and ##STR45## Z is selected from the group consisting of ##STR46## and ##STR47## M.sup..crclbar. is a cation, and each R is independently selected from the group consisting of hydrogen and --NO.sub.2.
A photosensitive element comprising a layer of a photocurable composition comprising:
- (a) a compound having the formula:
- ##STR50## wherein:
- n is 1 or 2,
- Y is selected from the group consisting of ##STR51## and ##STR52## Z is selected from the group consisting of ##STR53## and ##STR54## M+ is a cation, R is independently selected from the group consisting of hydrogen and --NO.sub.2,
- (b) an iodonium salt, and
- (c) a free-radical curable resin.
3 more elements
Dependencies are inferred from the claim text.