Invention Application
WO2012033674A1 PROCESS FOR MAKING LOW COMPRESSION SET AND HIGH AIRFLOW MDI VISCOELASTIC POLYURETHANE FOAM
审中-公开
制造低压缩组合和高气流MDI粘弹性聚氨酯泡沫的方法
- Patent Title: PROCESS FOR MAKING LOW COMPRESSION SET AND HIGH AIRFLOW MDI VISCOELASTIC POLYURETHANE FOAM
- Patent Title (中): 制造低压缩组合和高气流MDI粘弹性聚氨酯泡沫的方法
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Application No.: PCT/US2011/049744Application Date: 2011-08-30
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Publication No.: WO2012033674A1Publication Date: 2012-03-15
- Inventor: MA, Hongming , AOU, Kaoru , GAMBOA, Rogelio R. , ROSENTHAL, Carola , AUTENRIETH, Randal E.
- Applicant: DOW GLOBAL TECHNOLOGIES LLC , MA, Hongming , AOU, Kaoru , GAMBOA, Rogelio R. , ROSENTHAL, Carola , AUTENRIETH, Randal E.
- Applicant Address: 2040 Dow Center Midland, Michigan 48674 US
- Assignee: DOW GLOBAL TECHNOLOGIES LLC,MA, Hongming,AOU, Kaoru,GAMBOA, Rogelio R.,ROSENTHAL, Carola,AUTENRIETH, Randal E.
- Current Assignee: DOW GLOBAL TECHNOLOGIES LLC,MA, Hongming,AOU, Kaoru,GAMBOA, Rogelio R.,ROSENTHAL, Carola,AUTENRIETH, Randal E.
- Current Assignee Address: 2040 Dow Center Midland, Michigan 48674 US
- Agency: DOW GLOBAL TECHNOLOGIES LLC
- Priority: US61/380,639 20100907
- Main IPC: C08G18/40
- IPC: C08G18/40 ; C08G18/48 ; C08G18/63
Abstract:
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.
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