Patent GB-898060-A (GB)
Title: Improvements in and relating to the production of polyurethanes
IPC: C08G18/16
Filed: 1959-12-04
Abstract: A method for accelerating the reaction of an organic compound containing an NCY group in which Y is an oxygen or sulphur atom with a compound containing an active hydrogen atom as determined by the Zerewitinoff method comprises reacting such compounds in the presence of a catalyst composition comprising an organic compound of lead, an inorganic halide of tetravalent tin, arsenic, antimony, bismuth or titanium, a tin, titanium or copper chelate or a polystannate in combination with a tertiary amine.  In examples polyurethane foams are prepared by reacting a mixture of a polypropylene glycol of molecular weight 2,010, a reaction product of glycerol and propylene oxide of molecular weight 2,990, an 80:20 mixture of 2,4- and 2,6-tolylene diisocyanates, water, an oxyalkylene-polysiloxane copolymer surfactant, 1,4-diaza-bicyclo-[2,2,2]-octane and (1) antimony trichloride, (2) titanium tetrachloride, (3) stannic chloride, (4) dioctyl lead dichloride, (5) copper acetylacetonate. Other similar examples employ a glycerol-propylene oxide adduct as starting material and catalyst mixtures of diethanolamine with stannous acetylacetonate, arsenic trichloride, bismuth trichloride, octylene glycol titanate and isopropoxystearoxy polystannate, respectively.  Other metal compounds mentioned are stannic bromide, iodide and fluoride; bis(acetylacetone) tin dichloride; antimony pentachloride; dioctyl lead diacetate, dioctyl lead dioxide, and trioctyl lead chloride, hydroxide and acetate. Specifications 869,988 and 892,137 are referred to.ALSO:A method for accelerating the reaction of an organic compound containing an NCY group in which Y is an oxygen or sulphur atom with a compound containing an active hydrogen atom as determined by the Zerewitinoff method comprises reacting such compounds in the presence of a catalyst composition comprising an organic compound of lead, an inorganic halide of tetravalent tin, arsenic, antimony, bismuth or titanium, a tin, titanium or copper chelate or a polystannate in combination with a tertiary amine.  In examples polyurethane foams are prepared by reacting a mixture of a polypropylene glycol of molecular weight 2010, a reaction product of glycerol and propylene oxide of molecular weight 2990, an 80: 20 mixture of 2, 4- and 2, 6- tolylene diisocyanates, water, an oxyalkylene-polysiloxane copolymer surfactant, 1, 4-diaza-bicyclo- [2, 2, 2]-octane and (1) antimony trichloride, (2) titanium tetrachloride, (3) stannic chloride, (4) dioctyl lead dichloride, (5) copper acetylacetonate.  Other similar examples employ a glycerol-propylene oxide adduct as starting material and catalyst mixtures of diethanolamine with stannous acetylacetonate, arsenic trichloride, bismuth trichloride, octylene glycol titanate, and isopropoxystearoxy polystannate, respectively. Other metal compounds mentioned are stannic bromide, iodide and fluoride; bis (acetylacetone) tin dichloride; antimony pentachloride dioctyl lead diacetate, dioctyl lead dioxide, and trioctyl lead chloride, hydroxide and acetate.  Specifications 892,137 and 896,988 are referred to.