Low viscosity, ethylenically unsaturated polyurethanes...

Details Low viscosity, ethylenically unsaturated polyurethanes... Low viscosity, ethylenically unsaturated polyurethanes...

C - Chemistry, Metallurgy

08

G

C08G 18/67 (2006.01) C08G 18/78 (2006.01)

Patent

CA 2244606

The present invention relates to ethylenically unsaturated polyurethanes which are substantially free from isocyanate groups and have a) a total content of (meth)acryloyl groups (calculated as C=C, MW 24) of 1 to 20% by weight. b) an allophanate group content (calculated as N2C2HO3, MW 101) of 1 to 20% by weight and c) an isocyanurate group content (calculated as N3,C3,O3, MW 126) of up to 18% by weight, in which the allophanate and isocyanurate groups are prepared from aliphatic polyisocyanates. The present invention also relates to a one-component coating composition containing these ethylenically unsaturated polyurethanes.

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