Continuous process for the production of blocked isocyanate...

Details Continuous process for the production of blocked isocyanate... Continuous process for the production of blocked isocyanate...

C - Chemistry, Metallurgy

08

G

402/182

C08G 18/02 (2006.01) C07D 251/34 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1322426

ABSTRACT A continuous method for the high-yield, one-step, solvent-free manufacture of blocked polyisocyanurate compounds useful as curing agents in powder coating compositions. The preferred method of manufacture is to pre-mix a blocking agent and a polymerization catalyst (BAC mix) prior to injection with an organic isocyanate monomer having two or more isocyanate groups (herein termed a polyisocyanate) into a preheated reaction zone wherein the BAC mix and the polyisocyanate react to form the blocked polyisocyanurate compound that is obtained after discharge from the reaction zone and cooling.

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