公开(公告)号：US4611083A

公开(公告)日：1986-09-09

申请号：US674077

申请日：1984-11-23

申请人： Ingolf Buethe ,  Matthias Marx ,  Willibald Schonleben

发明人： Ingolf Buethe ,  Matthias Marx ,  Willibald Schonleben

IPC分类号： C07C265/12 ,  C07C275/28 ,  C08G18/32 ,  C08G18/42 ,  C08G18/44 ,  C08G18/48 ,  C08G18/50 ,  C08G18/56 ,  C08G18/60 ,  C08G18/72 ,  C08G18/78 ,  C08G18/80 ,  C08L75/00 ,  C08L75/04 ,  C07C119/048

CPC分类号： C07C265/12 ,  C07C275/28 ,  C08G18/3228 ,  C08G18/5024 ,  C08G18/7825 ,  C08G18/8038

摘要： The invention relates to urea group-containing polyisocyanate mixtures which are liquid at room temperature and have an isocyanate group content of from 15 to 30 weight percent and a diphenylmethane diisocyanate content of from 55 to 90 weight percent, obtained through the reaction of(A) polyoxyalkylene polyamines having a functionality of from 2 to 5 and an amine number from 20 to 250 with a polyisocyanate (B) selected from the group consisting of(B1) a mixture of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates having a diphenylmethane diisocyanate content of from 55 to 90 weight percent or(B2) at least one diphenylmethane diisocyanate isomer.The polyisocyanate mixtures claimed in the invention are used to prepare dense or cellular polyurethane and/or polyisocyanurate plastics, in particular, flexible polyurethane foams.

摘要翻译： 本发明涉及含有脲基的多异氰酸酯混合物，其在室温下为液体，异氰酸酯基含量为15〜30重量％，二苯基甲烷二异氰酸酯含量为55〜90重量％，通过（A） 具有2至5的官能度和20至250的胺数的聚氧化烯多胺与选自（B1）二苯基甲烷二异氰酸酯和聚苯基多亚甲基多异氰酸酯的混合物的多异氰酸酯（B）的二异氰酸酯含量为55 至90重量％或（B2）至少一种二苯基甲烷二异氰酸酯异构体。 本发明要求保护的多异氰酸酯混合物用于制备致密或细胞聚氨酯和/或聚异氰脲酸酯塑料，特别是柔性聚氨酯泡沫塑料。