发明名称 |
Viscoelastic polyurethane foam |
摘要 |
The subject invention provides a viscoelastic polyurethane foam being flame retardant and having a density of greater than two and a half pounds per cubic foot that comprises a reaction product of an isocyanate component, an isocyanate-reactive blend, and a chain extender. The isocyanate-reactive blend includes a first isocyanate-reactive component and a second isocyanate-reactive component. The first isocyanate-reactive component includes at least 60 parts by weight of ethylene oxide (EO) based on 100 parts by weight of the first isocyanate-reactive component and the second isocyanate-reactive component includes at most 30 parts by weight of EO based on 100 parts by weight of the second isocyanate-reactive component. The chain extender is reactive with the isocyanate component and has a backbone chain with from two to eight carbon atoms and is present in an amount of from 5 to 50 parts by weight based on 100 parts by weight of the foam. A composition useful in making the viscoelastic polyurethane foam is also disclosed.
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申请公布号 |
US7238730(B2) |
申请公布日期 |
2007.07.03 |
申请号 |
US20030607555 |
申请日期 |
2003.06.26 |
申请人 |
BASF CORPORATION |
发明人 |
APICHATACHUTAPAN WASSANA;NEFF RAYMOND;MULLINS JAMES;SMIECINSKI THEODORE M.;LEE THOMAS B. |
分类号 |
C08G18/28;C08G18/48;C08G18/66;C08G18/76 |
主分类号 |
C08G18/28 |
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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