公开(公告)号：US4696761A

公开(公告)日：1987-09-29

申请号：US860686

申请日：1986-05-02

申请人： Karlheinz Haubennestel ,  Daniela Breil ,  Alfred Bubat ,  Werner Spratte

发明人： Karlheinz Haubennestel ,  Daniela Breil ,  Alfred Bubat ,  Werner Spratte

IPC分类号： B01D19/00 ,  B01D19/04 ,  C07C273/18 ,  C07C275/14 ,  B01D17/04

CPC分类号： C07C273/1827 ,  B01D19/0413

摘要： To produce a de-foamer, mono- and/or poly-functional isocyanate is reacted with mono- and/or polyfunctional amines, preferably in equivalent ratio 0.5:1 up to 1:0.2, in an organic carrier media, to form urea sols at temperatures which lie below the melting temperature of the resulting urea, the organic carrier medium not being a true solvent for the urea. The prepared ureas are represented by the general Formula 1: ##STR1## wherein r=C.sub.4 -C.sub.30 -alkyl; R'=C2-C.sub.12 -alkylene, phenylene or naphthalene with or without substitution by one or more C.sub.1 -C.sub.9 -alkyl groups, or cycloalkylene; R'--H or CH.sub.3 ; R"--H or methyl; and x=0 to 1, and are prepared by reacting isocyanates with amines in organic carrier media to form ureas of Formula 1, at temperatures lying below the melting temperature of the resulting urea, the organic carrier media not being true solvents for the urea.

摘要翻译： 为了生产脱泡剂，单 - 和/或多官能异氰酸酯与有机载体介质中的单 - 和/或多官能胺优选以0.5:1至高达1:0.2的当量比反应，形成尿素溶胶 在低于所得尿素的熔融温度的温度下，有机载体介质不是尿素的真正溶剂。 制备的尿素由通式1表示：其中r = C 4 -C 30 - 烷基; R'= C2-C12-亚烷基，亚苯基或萘，有或没有被一个或多个C 1 -C 9 - 烷基或亚环烷基取代; R'-H或CH3; R“ - H或甲基; 并且x = 0至1，并且通过在有机载体介质中使异氰酸酯与胺反应以在低于所得尿素的熔融温度的温度下形成式1的脲来制备，有机载体介质不是尿素的真正溶剂。