Stabilization of flame retardant premix for polyurethane foams

Details Stabilization of flame retardant premix for polyurethane foams Stabilization of flame retardant premix for polyurethane foams

C - Chemistry, Metallurgy

09

K

400/103

C09K 3/00 (2006.01) C08G 18/18 (2006.01) C08G 18/28 (2006.01) C08G 18/50 (2006.01)

Patent

CA 1120178

122-P-US02277 STABILIZATION OF FLAME RETARDANT PREMIX FOR POLYURETHANE FOAMS ABSTRACT OF THE DISCLOSURE The storage stability of otherwise unstable premix compositions for flame retardant rigid polyurethane foams contain- ing 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 C18 acids.

323873

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