发明名称 |
PROCESS FOR MAKING LOW COMPRESSION SET AND HIGH AIRFLOW MDI VISCOELASTIC POLYURETHANE FOAM |
摘要 |
<p>A reaction system comprising an organic polyisocyanate and an isocyanate reactive component for preparation of a viscoelastic polyurethane foam is provided. The isocyanate reactive component comprises (i) from 10 to 50% by weight of one or more low equivalent weight propylene oxide rich (PO-rich) polyols having a combined number average equivalent weight from 200 to 500, (ii) from 45 to 95% by weight of one or more ethylene oxide (EO-rich) polyols having a combined number average equivalent weight from 200 to 800 and an ethylene oxide content from 40% to 65% by weight of the total mass of the EO-rich polyol and at least one of (iii) from 10 to 30% by weight of one or more high equivalent weight PO-rich polyols having a number average equivalent weight from 800 to 2,000 or (iv) from 10 to 40% by weight of one or more propylene oxide co-polymer polyols containing styrene-acrylonitrile.</p> |
申请公布号 |
EP2614098(A1) |
申请公布日期 |
2013.07.17 |
申请号 |
EP20110752442 |
申请日期 |
2011.08.30 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC |
发明人 |
MA, HONGMING;AOU, KAORU;GAMBOA, ROGELIO R.;ROSENTHAL, CAROLA;AUTENRIETH, RANDAL E. |
分类号 |
C08G18/40;C08G18/48;C08G18/63 |
主分类号 |
C08G18/40 |
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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