Photopolymerisation process using a compound containing both...

Details Photopolymerisation process using a compound containing both... Photopolymerisation process using a compound containing both...

G - Physics

03

F

96/247

G03F 7/027 (2006.01) C07D 207/452 (2006.01) C07D 209/78 (2006.01) C07D 493/08 (2006.01)

Patent

CA 1179881

Case 3-13484/ARL 315/+ CANADA PHOTOPOLYMERISATION PROCESS 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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