Patent ID: 9657151
Date: 2017-05-23
CPC Classifications: C07F,C08G,C08J,C08K,C08L,C09K

Claim:
1. An article selected from the group consisting of furniture, bedding, an automotive seat cushion, panel insulation, pour-in-place insulation and spray foam insulation, wherein the article comprises polyurethane foam made by reacting a polyurethane foam-forming composition, comprising a polyol, an isocyanate, a catalyst and a hydroxymethylphosphonate, and wherein the hydroxymethylphosphonate is produced by the method comprising: reacting paraformaldehyde, at least one dialkyl phosphite of the general formula: or the general formula: and at least one trialkyl phosphite of the general formula: or of the general formula: wherein each R is independently the same or different, linear or branched alkyl of from 1 to about 8 carbon atoms, linear or branched alkenyl group of from 2 to about 10 carbon atoms, cycloalkenyl group of from about 5 to about 10 carbon atoms, and cycloalkyl group of from about 5 to about 10 carbon atoms; and, R* is a linear or branched divalent alkylene group of from 2 to about 10 carbon atoms, linear or branched divalent alkenylene group of from 2 to about 10 carbon atoms, divalent cycloalkenyl group of from about 5 to about 10 carbon atoms, and divalent cycloalkyl group of from about 5 to about 10 carbon atoms, in the presence of at least one amine catalyst, to produce a hydroxymethylphosphonate with a lower acid content than an equivalent method which is conducted in the absence of trialkylphosphite.