发明名称 |
Ethylene Oxide/Propylene Oxide Polyether Polyols and Polyurethanes Made Therefrom |
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. |
申请公布号 |
US2015376332(A1) |
申请公布日期 |
2015.12.31 |
申请号 |
US201514849538 |
申请日期 |
2015.09.09 |
申请人 |
Villa Carlos M.;Masy Jean-Paul;Borella Ricco B.;Babb David A.;Castillo Flor A. |
发明人 |
Villa Carlos M.;Masy Jean-Paul;Borella Ricco B.;Babb David A.;Castillo Flor A. |
分类号 |
C08G65/12;C08G18/18;C08G18/24;C08G18/76;C08G18/48 |
主分类号 |
C08G65/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
Lake Jackson TX US |