Curing liquid polyurethane prepolymers
Process for the production of colored polyurethane foams
ApplicationNo. 05/864890 filed on 12/27/1977
US Classes:521/155, Cellular product derived from a -N=C=X containing reactant wherein X is a chalcogen atom521/107, Phosphorus atom is part of an organic compound521/130, Ingredient contains a carbon atom double bonded to oxygen, e.g., carboxylic acid, etc.521/160, Two or more N=C=X reactants521/175C-X-C reactant contains a carbohydrate group
ExaminersPrimary: Griffin, Ronald W.
Attorney, Agent or Firm
International ClassC08J 9/00 (20060101)
AbstractAdvantageous rigid polyurethane foam properties (e.g. compressive strength) can be improved and the proportions of polymerization catalyst and/or surfactant needed to provide a given level of such properties can be lowered by preparing such foams from compositions comprising, in addition to the conventional foam-forming reactants including polyisocyanate and polyol, from about 3% to about 10%, based on the weight of the polyol, of a plasticizer selected from essentially halogen-free phosphates and carboxylates containing at least one aryl radical, e.g. isodecyl diphenyl phosphate or butyl benzyl phthalate.