Process for the preparation of polyether-ester polyols
AssigneeBayer MaterialScience AG
InventorsKlaus Lorenz, Reinhard Albers, Frank Otto, Ulrich Leyrer, Don S. Wardius, Keith J. Headley
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Abstract
The present invention provides a process for the preparation of polyols based on fatty acid esters and starter compounds having Zerewitinoff-active hydrogen atoms and the use thereof for the preparation of polyurethane materials.
Claims17
A one pot, one step process for the preparation of a polyether-ester polyol comprising reacting one or more starter compounds having Zerewitinoff-active hydrogen atoms with one or more alkylene oxides in the presence of an amine catalyst that is employed in an amount of 200 ppm to 10,000 ppm, based on the amount of end product of the process and in the presence of one or more fatty acid esters having fatty acid radicals that contain no free OH groups to produce a polyether-ester polyol, with the proviso that the process does not use a salt of an alkali metal or alkaline earth metal as a catalyst to produce the polyether-ester polyol.
A polyether-ester polyol produced by a one pot, one step process comprising reacting one or more starter compounds having Zerewitinoff-active hydrogen atoms with one or more alkylene oxides in the presence of an amine catalyst that is employed in an amount of 200 ppm to 10,000 ppm, based on the amount of end product of the process and in the presence of one or more fatty acid esters having fatty acid radicals that contain no free OH groups, with the proviso that the process does not use a salt of an alkali metal or alkaline earth metal as a catalyst to produce the polyether-ester polyol.
A process for the preparation of a polyurethane foam or elastomer comprising reacting a polyisocyanate with a polyether-ester polyol produced by a one pot, one step process comprising reacting one or more starter compounds having Zerewitinoff-active hydrogen atoms with one or more alkylene oxides in the presence of an amine catalyst and in the presence of one or more fatty acid esters having fatty acid radicals that contain no free OH groups, with the proviso that the polyether-ester polyol is produced by a process that does not use a salt of an alkali metal or alkaline earth metal as a catalyst to produce the polyether-ester polyol.
Dependencies are inferred from the claim text.