发明名称 |
Low energy-loss, high firmness, temperature sensitive polyurethane foams |
摘要 |
Foaming a polyurethane foam at above atmospheric pressure conditions using a mixture of polyisocyanate and a specific mixture of low molecular weight (high OH number) polyether and graft polyols produces viscoelastic foams with high firmness, low energy losses and high temperature sensitivity such that firmness is reduced by at least 25% when the foam is heated from room temperature (e.g., about 70° F. (21° C.)) to 100° F. (38° C.). The foam-forming ingredients are mixed together and foamed at controlled pressures in the range 1.05 to 1.5 bar (absolute), preferably 1.1 to 1.3 bar (absolute).
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申请公布号 |
US6653363(B1) |
申请公布日期 |
2003.11.25 |
申请号 |
US20020309799 |
申请日期 |
2002.12.04 |
申请人 |
FOAMEX, L.P. |
发明人 |
TURSI, JR. DANIEL V.;CHAN CHIU Y.;NIEDEROEST BEAT |
分类号 |
C08G18/40;C08G18/63;C08G18/76;(IPC1-7):C08G18/28 |
主分类号 |
C08G18/40 |
代理机构 |
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代理人 |
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地址 |
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