Main > COATINGS > Organic Coatings > Powder Coatings > Crosslinking Agent > Blocked PolyIsocyanates > Co.: USA. D > Patent > Claims Etc > Claim 1: PolyUrethane Powder Coatin > g 1,2,4-Triazole-Blocked PolyIsocya > nate (I) & Hydroxyl PolyEster (II); > (I): Physical Mixt. of > Aliphatic Biuret-Funct DiIsocyanate > & (Cyclo)Aliphatic Isocyanurate > Funct. DiIsocyanate; Wherein > Isocyanate Groups are Blocked > such that 0.5-1 mol 1,2,4-Triazol/ > Isocyanate Equiv. & (II) has > Functionality of .gtoreq.2, on OH > No.=30-150 mg of KOH/g; > Viscosity <40,000 mPa.multidot.s at

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