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6630902 
Journal Article 
PHOTOREACTIVE POLYMERS OF 4-VINYLBENZYL THIOCYANATE 
Kern, W; Hummel, K; , 
1995 
Yes 
European Polymer Journal
ISSN: 0014-3057 
PERGAMON-ELSEVIER SCIENCE LTD 
OXFORD 
31 
5 
437-443 
English 
WOS:A1995QV75500006 
4-Vinylbenzyl thiocyanate (VBT) was synthesized as a new monomer. It was copolymerized with styrene (ST) to poly(VBT-co-ST) and polymerized to the homopolymer (PVBT). The molar fraction of VBT in the copolymers varied between 0.05 and 0.45. The lithographic properties of the materials under deep u.v. irradiation (248 nm KrF excimer laser) were studied. Depending on the copolymer composition, the gel dose E(g) was found between 6.7 and 262 mJ cm(-2), which corresponded to quantum efficiencies Phi of intermolecular crosslinking between 12.3 . 10(-3) and 3.8 . 10(-3). The observed variation of the sensitivity with the composition of the copolymers was analogous to results obtained for halogenated polystyrenes under electron beam irradiation.