Sensitizers for photocrosslinkable polymers

Details Sensitizers for photocrosslinkable polymers Sensitizers for photocrosslinkable polymers

1990-07-19

1991-11-12

Hamilton, Cynthia

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430287, 430285, 430283, 430286, 430920, 430922, 430915, 430926, 522 9, 522 16, 522 26, 522 50, 522 53, G03F 7031, G03F 7038, G03F 709

Patent

active

050647474

ABSTRACT:
A light-sensitive composition comprises a photo-crosslinkable polymer having a photo-dimerizable unsaturated bond and a sensitizer represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group or a substituted or unsubstituted allyl group, provided that R.sub.1 and R.sub.2 may form a ring together with the carbon atoms to which they are attached; n represents 0, 1 or 2; and G.sub.1 and G.sub.2 each independently represents a hydrogen atom, a cyano group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted aryloxycarbonyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted arylcarbonyl group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group or a fluoroalkylsulfonyl group, provided that G.sub.1 and G.sub.2 do not represent a hydrogen atom simulataneously and that G.sub.1 and G.sub.2 may form a ring comprising a non-metallic atom and the carbon atoms to which they are attached. According to the present invention, the sensitivity of the light-sensitive composition is greatly improved by the use of the above sensitizer.

REFERENCES:
patent: 2948610 (1960-08-01), Merrill et al.
patent: 3173787 (1965-03-01), Clement et al.
patent: 3528814 (1970-09-01), Riester et al.
patent: 3870524 (1975-03-01), Watanabe et al.
patent: 4062686 (1977-12-01), Van Allan et al.
patent: 4063953 (1977-12-01), Fukutani et al.
patent: 4163097 (1979-07-01), Baumann et al.
E. M. Robertson et al, "Photosensitive Polymers. II., Sensitization of Poly(Vinyl Cinnamate)", Journal of Applied Polymer Science, vol. II, Issue No. 6, pp. 308-311, (1959).

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