发明授权
US4612335A Polyoxyalkylene polyether amino alcohols containing a tertiary hydroxyl group and flexible polyurethanes made therefrom 失效
含有叔羟基的聚氧化烯聚醚氨基醇和由其制成的柔性聚氨酯

Polyoxyalkylene polyether amino alcohols containing a tertiary hydroxyl
group and flexible polyurethanes made therefrom
摘要:
Polyoxyalkylene polyether amino alcohols are prepared which have the following formula: ##STR1## wherein, R represents hydrogen or a methyl or an ethyl group, x represents a number having an average value of about 1 to about 4 and n represents a number having an average value of about 1 to about 40.The polyoxyalkylene polyether amino alcohol is prepared by alkoxylating a glycol that contains one tertiary hydroyxl group and also a primary or secondary hydroxyl group in order to form an alkoxylated intermediate and by then reductively aminating the alkoxylated intermediate.
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