专利名称：Method for the preparation of polyether
polyols based on aromatic di- and/orpolyamines and their use in polyurethaneand polyisocyanate synthetic materials
发明人：DIETRICH, MANFRED, DR.,KAUFUNG,
REINHARD, DR. C/O SUMITOMO BAYER
申请号：EP89115151.6申请日：19890817公开号：EP0356814A3公开日：19910515
摘要： The present invention relates to polyether polyols having OH numbers ofabout 300 to 630 obtained by sequentially reacting 2,4- and/or 2,6-tolylenediamine ormixtures of 2,4- and/or 2,6-tolylenediamine and one or more other aromatic amines withfrom about 1 to 2.5 moles of ethylene oxide for each NH2 group, and then with fromabout 0.5 to 5 moles of propylene oxide for each NH2 group, wherein said polyetherpolyols contain secondary amino groups comprising from about 2 to 20% of the
isocyanate-reactive groups in said polyols and a free aromatic amine content of less thanabout 0.2% by weight. The present invention further relates to a process for preparingthe polyether polyols of the invention, as well as to a method of using the polyetherpolyols for the preparation of polyurethane plastics.
申请人：BAYER AG
地址：51368 Leverkusen DE
国籍：DE
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