Title: Flexible polyurethane foams inhibited from yellowing and pad
Application Number: 01822870 Application Date: 2001.08.10
Publication Number: 1492890 Publication Date: 2004.04.28
Approval Pub. Date: 2006.02.01 Granted Pub. Date: 2006.02.01
International Classifi-cation: C08G18/48,C08L75/08,A41C3/12,A41C3/14
Applicant(s) Name: Bridgestone Corp. Address:
Inventor(s) Name: Kinoshita Hideya
Attorney & Agent: liu yuanjin pang lizhi
Abstract:
     A slow-yellowing flexible polyurethane foam which is prevented from being subject to yellowing the foam itself and color migration due to the yellowing is provided without using expensive aliphatic isocyanate as the isocyanate component in raw material. A slow-yellowing flexible polyurethane foam which is made by foaming a polyurethane raw material containing a polyol component and an isocyanate, wherein the polyol component contains a polyether polyol having ester bonds in the polyol backbone. A slow-yellowing flexible polyurethane foam which is made by foaming a polyurethane raw material containing a polyol component and an isocyanate, wherein the polyol component contains a polyether polyol having a plurality of benzene rings in the polyol structure. A slow-yellowing flexible polyurethane foam which is made by foaming a polyurethane raw material containing a polyol component and an isocyanate, wherein the polyol component contains a polyether polyol having ester bonds in the polyol backbone and having a plurality of benzene rings in the polyol structure.
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