Huntsman Advanced Materials Americas LLC

Ottilie Zelenko

Bernhard Sailer

Catherine Schoenenberger

Martin Roth

The present invention relates to functionalized acrylate polymers, a process for their preparation, photopolymerizable compositions comprising these polymers and the use of the compositions, especially in the production of electronic components. The functionalized acrylate polymers are reaction products comprising at least a) acrylic acid or methacrylic acid or a mixture of acrylic and methacrylic acid and b) a (meth)acrylic ester of substituted or unsubstituted phenol, C-Chydroxyalkylbenzene or C-Chydroxyalkoxybenzene and methyl(meth)acrylate in a molar ratio of from 5:95 to 100:0. 5-90% of the acrylic or methacrylic acid units having reacted with a glycidylvinyl compound.

Polymerisable composition

Linear crosslinkable polyurethanes obtained from (a) at least one diisocyanate having 2 to 30 carbon atoms, (b) at least one aliphatic or cycloaliphatic diol having 2 to 30 carbon atoms, to whose carbon chain at least one carboxyl group is covalently bonded, and some or all of said carboxyl groups have been esterified with an olefinically unsaturated C-Calcohol or with the glycidyl ester of an olefinically unsaturated C-Ccarboxylic acid, and (c) optionally at least one aliphatic or cycloaliphatic diol having 2 to 30 carbon atoms, to whose carbon chain at least one carboxyl group is covalently bonded. The polyurethanes are suitable, alone or as a mixture with other reactive components, for thermal and/or photochemical crosslinking in crosslinkable compositions for the production of mouldings, coatings and in particular solder masks.

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Oberwil, Switzerland

Ottilie Zelenko