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    • 14. 发明授权
    • Process for preparing highly reactive (semi)crystalline and amorphous blocked polyisocyanates
    • 制备高反应性(半)结晶和无定形封端多异氰酸酯的方法
    • US06448363B1
    • 2002-09-10
    • US09899240
    • 2001-07-06
    • Andreas WenningThomas Weihrauch
    • Andreas WenningThomas Weihrauch
    • C08G1880
    • C08G18/807C08G18/0895C08G2150/20
    • 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.
    • 本发明提供了一种无溶剂的连续方法,其包括:在至少一个挤出机,密炼机,密炼机或静态混合机中,混合并加热包括以下(A),(B)和 (C)和(D):(A)至少一种脂族,(环)脂族和/或脂环族C 3 -C 50二异氰酸酯化合物;(B)至少一种脂族,(环)脂族和/或脂环族C 3 -C 50多异氰酸酯 含有一个或多个异氰脲酸酯基团的化合物;(C)1,2,4-三唑;(D)一种或多种具有下式的吡唑:其中R1,R2和R3彼此同时或独立地是氢或烷基,烯基,芳烷基 ,芳基或N-取代的氨基甲酰基,卤素或-C(= O)-O-R 4,其中R 4是C 1 -C 12烷基;得到包含至少一种(半)结晶的C 3 -C 50 异氰酸酯化合物和至少一种无定形的C 3 -C 50异氰酸酯化合物。 本发明还提供了通过使用该组合物的方法和方法制备的组合物。