C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/12 (2006.01) C08G 18/10 (2006.01) C08G 18/79 (2006.01) C09D 175/08 (2006.01)
Patent
CA 2316536
The present invention relates to coating compositions containing a) 15 to 35% by weight, based on the weight of components a) and b), of aspartate-terminated urea/urethane prepolymers that are based on the reaction products of i) NCO prepolymers having a functionality of 1.8 to 2.2 and based on linear or branched aliphatic diisocyanates and ii) diaspartates prepared from linear or branched aliphatic diamines, b) 65 to 85% by weight, based on the weight of components a) and b), of diaspartate ii) and c) a polyisocyanate adduct prepared from aliphatic diisocyanates and having an average functionality of 2.8 to 3.1, wherein components a), b) and c) are present in amounts sufficient to provide an equivalent ratio of aspartate groups to isocyanate groups of 1.2:1 to 1.0:1.3. The present invention also relates to coatings prepared from these coating compositions.
Gindin Lyubov K.
Hergenrother P. Richard
Roesler Richard R.
Squiller Edward P.
Corporation Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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