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method for preparing an organic derivative of phosphoric acid by reaction of a fosforverbinding, an organic anhydrides and epoxyalkaan,method for preparing a polyurethan and formed product obtained with application of the latter method.
method for preparing an organic derivative of phosphoric acid by reaction of a fosforverbinding, an organic anhydrides and epoxyalkaan,method for preparing a polyurethan and formed product obtained with application of the latter method.