| 摘要 |
The present invention provides a solventless, continuous process, which includes:in at least one extruder, intensive compounder, intensive mixer or static mixer,mixing and heating a reaction mixture including the following (A), (B), and one or both of (C) and (D):(A) at least one aliphatic, (cyclo)aliphatic and/or cycloaliphatic C3-C50 diisocyanate compound;(B) at least one aliphatic, (cyclo)aliphatic and/or cycloaliphatic C3-C50 polyisocyanate compound containing one or more isocyanurate groups;(C) 1,2,4-triazole;(D) one or more pyrazole having the formula:where R1, R2 and R3 simultaneously or independently of one another are hydrogen or alkyl, alkenyl, aralkyl, aryl or N-substituted carbamoyl groups, halogen or -C(=O)-O-R4, where R4 is a C1-C12 alkyl group;to obtain a product mixture including at least one (semi)crystalline, blocked C3-C50 isocyanate compound and at least one amorphous, blocked C3-C50 isocyanate compound. The present invention also provides a composition prepared by the process and methods of using the composition.
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