C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) C08G 18/78 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C09D 5/03 (2006.01)
Patent
CA 2195162
The present invention is directed to a powder coating composition containing as binder A) a polyisocyanate component which contains blocked isocyanate groups, is present in powder form, is solid below 40°C and liquid above 150°C, and contains one or more polyisocyanates i) having a blocked NCO content (calculated as NCO, MW 42) of 5 to 25% by weight and ii) containing fluorine (calculated as F, AW 19) in an amount of 0.01 to 20% by weight, wherein the preceding percentages are based on the solids content of the polyisocyanate mixture and B) a polyhydroxyl component containing one or more high molecular weight polyols.
La présente invention décrit une composition de revêtement en poudre contenant, comme liant, A) un élément polyisocyanate contenant des groupes isocyanate bloqués; à l'état de poudre, solide à moins de 40 degrés C et liquide à moins de 150 degrés C; contient un ou plusieurs polyisocyanates comportant i) une teneur en groupes NCO bloqués (calculée à l'état de NCO, m.m. 42) de 5 à 25 % en poids et ii) une teneur en fluor (calculée à l'état de F, m.m. 19) de 0,01 à 20% en poids, ces pourcentages étant basés sur la teneur à l'état solide dans le mélange de polyisocyanate et B) un élément polyhydroxylique contenant un ou plusieurs polyols à poids moléculaire élevé.
Squiller Edward P.
Venham Lanny D.
Yeske Philip E.
Yonek Kenneth P.
Corporation Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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