发明名称 |
PROCESS FOR MAKING HIGH AIRFLOW AND LOW COMPRESSION SET VISCOELASTIC POLYURETHANE FOAM. |
摘要 |
<p>A reaction system comprising (a) a polyisocyanate component and (b) an isocyanate reactive component for preparation of a polyurethane foam having high air flow with low compression set is provided. The isocyanate reactive component comprises (i) from 45 to 70% by weight of one or more PO-rich polyols having a combined number average equivalent weight from 210 to 510, (ii) from 20 to 30% by weight of one or more ethylene oxide polyols having a combined number average equivalent weight from 200 to 500, (iii) from 10 to 25% by weight of one or more ethylene oxide-alkylene oxide polyethers having a combined number average equivalent weight from 300 to 800; and (iv) from 0.5 to 15% by weight of one or more PO-rich polyols having a functionality of 1 to 4 and a combined number average equivalent weight of 2,000 to 6,000.</p> |
申请公布号 |
MX2013003608(A) |
申请公布日期 |
2013.05.09 |
申请号 |
MX20130003608 |
申请日期 |
2011.08.29 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC.* |
发明人 |
ROGELIO R. GAMBOA;HONGMING MA;LAORU AOU |
分类号 |
C08G18/28;C08G18/48;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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