Haze free polyether polyol compositions and a method for their preparation
AssigneeBASF SE
InventorsChacko Thankachan, Brian J. Betke, Michael C. Welch
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Abstract
Most generally, the invention provides a method for making a neutralized polyether polyol, comprising the steps of a) Polymerizing one or more alkylene oxides in the presence of an alkaline catalyst to form a polyalkylene oxide intermediate; and b) Neutralizing the intermediate, after the polymerization step a) is complete, with an organic acid of general formula where R1 is hydrogen, methyl, or ethyl; R2 is methyl or ethyl; and R3 is an alkyl, aryl, or aralkyl group containing one to twelve carbon atoms. The invention also comprises the novel compositions made by the above process.
Claims22
A polyether polyol composition, comprising the reaction product of a polyoxyalkylene intermediate containing un-neutralized alkaline catalyst with an organic acid of general formula
- where R1 is hydrogen, methyl, or ethyl;
- R2 is methyl or ethyl;
- and R3 is an alkyl, aryl, or aralkyl group containing one to twelve carbon atoms,
- wherein the polyoxyalkylene intermediate comprises an un-neutralized alkaline catalyst and the polymeric addition product of ethylene oxide or a mixture of ethylene oxide and other alkylene oxides onto a starter molecule or a mixture of starter molecules having active hydrogens.
A method for making a neutralized polyether polyol, comprising the steps of
- a) polymerizing one or more alkylene oxides in the presence of an alkaline catalyst to form a polyalkylene oxide intermediate;
- and
- b) neutralizing the intermediate, after the polymerization step a) is complete, with an organic acid selected from the group consisting of neoheptanoic acid, 2-ethylhexanoic acid, and neononanoic acid.
A polyether polyol composition, prepared by a process comprising the steps of
- a) polymerizing one or more alkylene oxides in the presence of an alkaline catalyst to form a polyalkylene oxide intermediate;
- and
- b) neutralizing the intermediate, after the polymerization step a) is complete, with an organic acid selected from the group consisting of neoheptanoic acid and 2-ethylhexanoic acid.
Dependencies are inferred from the claim text.