Abstract: Organic antimony compounds can be used to retard deactivation of urethane catalysts during storage of a B side formulation containing aromatic polyester polyols, used in the manufacture of rigid polyurethane foams.

Abstract: The storage stability of otherwise unstable premix compositions for flame retardant rigid polyurethane foams containing in the premix a chlorinated polyether polyol and a tertiary amine catalyst, is enhanced by incorporation into the premix of a minor amount of a vinyl monomer. The preferred vinyl monomers employed are condensation products of acrylic or methacrylic acid with alcohols or amines. Such stabilization prevents premature deactivation of the tertiary amine catalysts contained in the premix.

Abstract: The storage stability of otherwise unstable premix compositions for flame retardant rigid polyurethane foams containing in the premix a chlorinated polyether polyol and a tertiary amine catalyst, is enhanced by incorporation into the premix a synergistic combination of an organic sulfur compound and an unsaturated carbon compound. The preferred sulfur compound is thiourea; among the preferred unsaturated carbon compounds are unsaturated terpenes such as allo-ocimene and unsaturated higher fatty acids such as tall oil fatty acids and mono-, di-, and trienic C.sub.18 acids.

Abstract: Catalysts having the following formula have been found to have unexpectedly high activity for the production of polyurethane and polyisocyanate resins: ##STR1## where: R, R.sub.1 and R.sub.2 are alkyls having 1 to 4 carbon atoms,R.sub.3 and R.sub.4 are independently selected from the group consisting of H, alkyls having 1 to 12 carbon atoms and aryls and aralkyls having 6 to 18 carbon atoms, andR.sub.5 is selected from the group consisting of H, an alkyl having 1 to 2 carbon atoms and an aryl and an aralkyl having 6 to 15 carbon atoms.

Abstract: Catalysts having the following formula, prepared in the absence of water, are stable to heat and storage and show high activity in reactions involving organic isocyanates, such as in the production of polyurethane and polyisocyanurate resins: ##EQU1## wherein: A is a mono- or bicyclic tertiary amine having at least 4 carbon atoms in an azine ring,R.sup.1 is H or an alkyl group of 1 to 10 carbon atoms,R.sup.2 is H or an alkyl or aryl group of 1 to 10 carbon atoms, and.phi. is a phenyl group, which may be further substituted by one or more hydroxyl or alkyl groups.Typical compounds, for example, are those corresponding to the formula ##EQU2## wherein: R is H or methyl.

Abstract: Catalysts having the following formula have been found to have unexpectedly high activity for the production of polyurethane and polyisocyanate resins: ##EQU1## where: R, R.sub.1 and R.sub.2 are alkyls having one to four carbon atoms,R.sub.3 and R.sub.4 are independently selected from the group consisting of H, alkyls having one to 12 carbon atoms and aryls and aralkyls having six to 18 carbon atoms, andR.sub.5 is selected from the group consisting of H, an alkyl having one to two carbon atoms and an aryl and an aralkyl having six to 15 carbon atoms.