C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/81 (2006.01) C08G 18/67 (2006.01) C08G 18/68 (2006.01) C08G 18/78 (2006.01) C09D 175/14 (2006.01)
Patent
CA 2229368
The present invention relates to ethylenically unsaturated polyurethanes which are substantially free from isocyanate groups and have a) a content of .beta.,.gamma.-ethylenically unsaturated ether groups (calculated as C=C, MW 24) incorporated through allophanate groups of 0.5 to 10% by weight, b) an allophanate group content (calculated as N2C2HO3, MW 101) of 1 to 20% by weight and c) a total content of ethylenically unsaturated groups of (calculated as C=C, MW 24) of 1 to 15% by weight. The present invention also relates to ethylenically unsaturated polyisocyanates which contain allophanate groups and have i) an NCO content of 5 to 25% by weight, ii) a content of .beta.,.gamma.-ethylenically unsaturated ether groups (calculated as C=C, MW 24) incorporated through allophanate groups of 0.5 to 15% by weight and iii) an allophanate group content (calculated as N2C2HO3, MW 101) of 1 to 30%. Finally, the present invention relates to one-component coating compositions containing the ethylenically unsaturated polyurethanes according to the invention.
Dvorchak Michael J.
Jeffries Michael K.
Mason Arthur W.
Venham Lanny D.
Corporation Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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