发明名称 |
Production of sound- and energy-absorbing flexible polyurethane foam, involves reacting polyisocyanate with a special polyol mixture containing at least three polyfunctional polyether-ol components |
摘要 |
A polyether-ol (PEOL) mixture for the production of flexible polyurethane foam comprises (b1) 2- to 8-functional PEOL with more than 50% prim. OH groups based on propylene and/or butylene oxide (PO/BO) and ethylene oxide (EO), (b2) 2- to 6-functional PEOL based on PO and/or BO and (b3) other PEOL with more than 25% prim. OH groups, based on EO and PO. A process for the production of sound-damping and energy-absorbing flexible polyurethane (PUR) foam by reacting: (a) optionally modified polyisocyanates; with (b) a polyether-ol mixture; and optionally (c) other compounds with isocyanate-reactive hydrogen atoms; in presence of (d) water and/or other blowing agents; (e) catalysts; and optionally (f) other additives, etc.. Component (b) comprises (b1) di- to octa-functional polyether-ol(s) based on a mixture of PO and/or BO and more than 40 wt.% EO, with an OH number of 20-1000 mg KOH/g and a primary OH group content of more than 50%, with the proviso that (b1) contains at least one at least difunctional polyether-ol (b1.1) with an OH number of 20-100, (b2) di- to hexa-functional polyether-ol(s) with an OH number of more than 30, based on PO and/or BO, and (b3) other polyether-ol(s) based on EO and PO with a prim. OH group content of more than 25%, with the proviso that the content of (b1) in (b) is more than 30 wt%. An Independent claim is also included for PUR foam obtained by this process.
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申请公布号 |
DE19924802(A1) |
申请公布日期 |
2000.11.30 |
申请号 |
DE1999124802 |
申请日期 |
1999.05.29 |
申请人 |
BASF AG |
发明人 |
FALKE, PETER;ROTERMUND, INGE;SCHMUTZER, KLAUS;SCHMALER, KIRSTEN |
分类号 |
C08G18/48;(IPC1-7):C08G18/48;C08G18/72;C08L75/08 |
主分类号 |
C08G18/48 |
代理机构 |
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主权项 |
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地址 |
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