发明授权
- 专利标题： Sulfur-modified copolyether glycols, a method for preparing them, and polyurethanes prepared therefrom
- 专利标题（中）： 硫改性共聚醚二醇，其制备方法和由其制备的聚氨酯
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申请号： US281202申请日： 1981-07-07
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公开(公告)号： US4374970A公开(公告)日： 1983-02-22
- 发明人: Ivan M. Robinson
- 申请人： Ivan M. Robinson
- 申请人地址： DE Wilmington
- 专利权人： E. I. Du Pont de Nemours and Company
- 当前专利权人： E. I. Du Pont de Nemours and Company
- 当前专利权人地址： DE Wilmington
- 主分类号： C08G18/50
- IPC分类号： C08G18/50 ; C08G18/52 ; C08G65/334 ; C08G65/34 ; C09K3/00
摘要：
Copolyether glycols are modified so that they contain 1-25%, by weight of .beta.,.beta.'-dihydroxyalkyl sulfide moieties.These modified copolyether glycols have enhanced resistance to degradation by heat and oxygen.The invention also relates to a method of making the modified copolyether glycols, to their use as stabilizers against the degradation of the polyether chains, and to polyurethanes made with them.
公开/授权文献
- US5517965A Governor device for internal combustion engine 公开/授权日：1996-05-21
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