| abstract |
Processes for preparing polyurethane products using very low unsaturation polyether polyols prepared in the presence of aluminum phosphonate catalysts have been disclosed. The reaction product of the reaction includes various polyurethane products including foams, coatings, adhesives, sealants and elastomers. The aluminum phosphonate catalyst preferably has the general structure RPO- (OAlR'R ") 2 , where O represents oxygen; P represents 5 valence phosphorus; Al represents aluminum; R represents hydrogen, an alkyl group Or an aryl group; R 'and R "independently include a halide, an alkyl group, an alkoxy group, an aryl group, or an aryloxy group. |