发明授权
US09156936B2 Ethylene oxide/propylene oxide polyether polyols and polyurethanes made therefrom
有权
环氧乙烷/环氧丙烷聚醚多元醇和由其制成的聚氨酯
- 专利标题： Ethylene oxide/propylene oxide polyether polyols and polyurethanes made therefrom
- 专利标题（中）： 环氧乙烷/环氧丙烷聚醚多元醇和由其制成的聚氨酯
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申请号： US13812501申请日： 2011-08-11
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公开(公告)号： US09156936B2公开(公告)日： 2015-10-13
- 发明人: Carlos M Villa , Jean-Paul Masy , Ricco B. Borella , David A. Babb , Flor A. Castillo
- 申请人： Carlos M Villa , Jean-Paul Masy , Ricco B. Borella , David A. Babb , Flor A. Castillo
- 申请人地址： US MI Midland
- 专利权人： Dow Global Technologies LLC
- 当前专利权人： Dow Global Technologies LLC
- 当前专利权人地址： US MI Midland
- 代理机构： Gary C Cohn PLLC
- 国际申请： PCT/US2011/047339 WO 20110811
- 国际公布： WO2012/027113 WO 20120301
- 主分类号： C08G18/32
- IPC分类号： C08G18/32 ; C08G65/26 ; C08L71/02
摘要：
Copolymers of propylene oxide and ethylene oxide have an inner block that contains from 65-90 weight percent oxyethylene units and from 10 to 35 weight percent oxypropylene units. This block has a molecular weight of from 150 to 350. The copolymer has an outer block which contains at least 95 weight % oxypropylene units and from 0 to 5% oxyethylene units. The equivalent weight of the copolymer is from 800 to 2000. The copolymers are useful in making polyurethane foams that have unexpectedly high tensile and/or tear strengths.
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