C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/79 (2006.01) B05D 3/02 (2006.01) C08G 18/80 (2006.01) C09D 175/04 (2006.01)
Patent
CA 2215127
Disclosed is a novel uretdione-functional polyaddition compound of the following formula: Image (in which Y is -NCO or a block isocyanate group of the formula -NHCO-B; B is a residue of a blocking agent of the formula -NHR , -NR R3 or OR2 ; X is O, NH or NR4; R is a residue of isophorone diisocyanate; n is a number of 1 to 20; R1 is the same as R or a C2-16 linear, branched or cyclic alkylene; R2 and R3 are each a C1-14 hydrocarbon group and R4 is a C1-14 hydrocarbon group or R2-O-CO-CH2CH2-). The compound is useful as a component of a polyurethane powder coating composition which gives a matte surface.
On dévoile un nouveau composé de polyaddition à fonction uretdione de formule suivante : Image (où Y est -NCO ou un groupe isocyanate bloqué de formule -NHCO-B; B est un résidu d'un agent bloquant de formule -NHR , -NR R3 ou OR2 ; X est O, NH ou NR4; R est un résidu de diisocyanate d'isophorone; n est un nombre compris entre 1et 20; R1 est identique à R ou est un alkylène en C2-C16 linéaire, ramifié ou cyclique; R2 et R3 sont chacun un groupe hydrocarboné en C1-C14 et R4 est un groupe hydrocarboné en C1-C14 ou R2-O-CO-CH2CH2-). Le composé est utile comme constituant d'une composition de revêtement en poudre de polyuréthane qui donne une surface mate.
Gras Rainer
Schmitt Felix
Weiss Jorn Volker
Wolf Elmar
Degussa-Huls Aktiengesellschaft
Fetherstonhaugh & Co.
Huls Aktiengesellschaft
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