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 |
MX338159(B) |
申请公布日期 |
2016.04.05 |
申请号 |
MX20130002152 |
申请日期 |
2011.08.11 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC.* |
发明人 |
DAVID A. BABB;CARLOS M. VILLA;JEAN-PAUL MASY;RICCO B. BORELLA |
分类号 |
C08G65/00 |
主分类号 |
C08G65/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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