C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/48 (2006.01) C03C 17/32 (2006.01) C03C 25/10 (2006.01) C08G 18/67 (2006.01) C08G 18/81 (2006.01) C08J 7/18 (2006.01) C09D 175/02 (2006.01) C09D 175/08 (2006.01)
Patent
CA 2090450
The present invention relates to radiation- curable oligomers which can be prepared from a) one hydroxy- and/or aminofunctional compound having a functionality between 3 and 4 and a number-average molecular weight between 500 and 4000, b) one compound having 2 hydroxy and/or amino groups and a number-average molecular weight between 200 and 4000, c) one monoethylenically unsaturated compound having a group containing one active hydrogen atom and having a number-average molecular weight between 116 and 1000, and d) one aliphatic and/or cycloaliphatic diisocyanate, which comprises using components a to d in amounts such that 1. the molar ratio of component a to component b is between 0.1 and 1.1, 2. the molar ratio of component c to component a is between 2.0 and 10, and 3. the equivalent ratio of the isocyanate groups of component d to the hydroxyl and/or amino groups of the sum of components a to c is between 0.9 and 1Ø
Hintze-Bruning Horst
Schunck Stephan
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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