Flame retardant polyurethane foam Patent #: 3948826
ApplicationNo. 646432 filed on 05/07/1996
US Classes:521/137, At least one polymer is derived from a -N=C=X reactant wherein X is a chalcogen atom or wherein the polymer-forming system contains the same type of reactant521/122Ingredient contains a silicon atom
ExaminersPrimary: Gorr, Rachel
Attorney, Agent or Firm
International ClassC08G 018/30
AbstractIn a process for the preparation of rigid polyurethane foam from a polyol and a polyisocyanate, it is possible to prepare rigid polyurethane foam by using an aqueous polymer emulsion comprising a polymer of ethylenically unsaturated monomers whereby the amount of chlorofluorocarbon used can be decreased or eliminated.