Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Forming nonplanar surface
Patent
1982-07-12
1984-04-03
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Forming nonplanar surface
430270, 430281, 430394, 20415914, 20415922, G03C 500
Patent
active
044408501
ABSTRACT:
A layer of a liquid composition containing a compound (A) having in the same molecule at least one (meth)acryloyl group and at least one bicyclo[2.2.1]hept-2-ene-6-yl unit is exposed to actinic radiation so that the layer solidifies due to photopolymerisation of (A) through the (meth)acryloyl group(s), remaining, however, photocrosslinkable. When desired, the solidified layer is exposed, as through a negative, to a substantially greater amount of actinic radiation, the parts so further exposed becoming more highly photocrosslinked through the bicyclo[2.2.1]hept-2-ene-6-yl unit(s) and hence insoluble. An image is produced which can be developed by means of suitable solvents. Examples of (A) include 3-(methacryloyloxy)-2-hydroxypropyl bicyclo[2.2.1]hept-2-ene-6-carboxylate and 2-(acryloyloxy)ethyl methyl-5-carboxybicyclo[2.2.1]hept-2-ene-6-carboxylate.
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D. R. Arnold et al., "Photochemistry", Academic Press, 1974, p. 170.
Losert Ewald
Paul John G.
Stark Bernard P.
Brammer Jack P.
Ciba-Geigy Corporation
Falber Harry
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