Flexible Polyurethane Foams and Process for Producing Same
Publication Date: 2002-Aug-15
The IP.com Prior Art Database
The instant invention relates to polyester polyol compositions which are suitable for use in the preparation of flexible polyurethane foams. The instant invention further relates to methods of producing such compositions, flexible foams produced from the compositions and methods of preparing foams utilizing such compositions. It has been surprisingly discovered that the all polyester polyol compositions of the instant invention produce flexible polyurethane foams in combination with various isocyanates, wherein the final foam possess many highly desirable properties, without the use of polyether polyols and/or other polyester polyols, such as aliphatic polyols. The inventive flexible polyurethane foams possess highly desirable softness properties without the use of decreased amounts of isocyanates. Further, the flexible polyester based foams are surprising resistant to hydrolysis, while at the same time possessing good structural integrity and excellent flame retardancy using conventional flame retardants. More specifically, the invention encompasses flexible polyester polyurethane foams which comprise the reaction product of a phthalate polyester polyol, an isocyanate, water, a urethane catalyst and a compatiblizing surfactant/emulsifier. The invention further encompasses methods of preparing the inventive foams. Other key terms the polyester polyol, phthalic anhydride, phthalic acid; alkylene groups, adipic acid-based polyester polyol.