专利名称：Low viscosity polymer polyols, process for
their preparation and their use in thepreparation of polyurethane foams
发明人：HEINEMANN, TORSTEN, DR.,SCHOLL, HANS-JOACHIM, DR.,DIETRICH, MANFRED,DR.,JACOBS, GUNDOLF, DR.,KRATZ, MARK,DR.,SANDERS, JOSEF, DR.,WOYNAR, HELMUT,DR.
申请号：EP96111160.6申请日：19960711公开号：EP0755953A2公开日：19970129
摘要：The novel feature in the prepn. of stable, low viscosity graft copolymerdispersions by radical polymerisation of olefinic monomers (pref. styrene and/oracrylonitrile) with polyols is that the reaction is effected in presence of castor oil-modified hydroxy cpds. Also claimed are: (a) prepn. of the modified cpds. by reaction ofcastor oil with polyetherpolyols at mol. ratio 0.1:1-10:1, esp. 1.1-3:1; and (b) use of thedispersion in the prepn. of polyurethanes by the NCO-addn. process. Pref. the olefinicmonomer is a 20:80 - 80:20 (esp. 25:75 - 75:25) wt. ratio styrene/acrylonitrile mixt. and thepolyol is an at least 2 OH gp.-contg. polyetherpolyol of functionality 2.5-6 and OH no. 20-100. The modified OH cpd. has mol.wt. 6000-100000 and functionality 2-6.
申请人：BAYER AG
地址：51368 Leverkusen DE
国籍：DE
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