[EN] METHOD OF MAKING HYDROXYMETHYLPHOSPHONATE, POLYURETHANE FOAM-FORMING COMPOSITIONS POLYURETHANE FOAM AND ARTICLES MADE THEREFORM<br/>[FR] MÉTHODE DE FABRICATION DE PHOSPHONATE D'HYDROXYMÉTHYLE, COMPOSITIONS DE POLYURÉTHANE MOUSSANTES, MOUSSE POLYURÉTHANE ET ARTICLES FABRIQUÉS À PARTIR DE LADITE MOUSSE
申请人:SUPRESTA LLC
公开号:WO2010080425A1
公开(公告)日:2010-07-15
A method of making hydroxymethylphosphonate comprising heating paraformaldehyde in a solvent to a desired reaction temperature, wherein the solvent is present in at least an amount necessary to solvate or suspend the paraformaldehyde; adding at least one alkyl phosphite to the heated paraformaldehyde, to provide hydroxymethylphosphonate, the alkyl phosphite being added to the heated paraformaldehyde at a rate which will avoid or inhibit the production of a significant exotherm and resulting high/significant level of acid by-product(s), there being present in the reaction medium at least one hindered amine catalyst in which the nitrogen in the amine is directly bound to a secondary and/or tertiary carbon of an organic group; and, optionally, following the completion of the addition, heating the reaction mixture to an elevated temperature.
一种制备羟甲基膦酸酯的方法,包括将多聚甲醛在溶剂中加热至所需反应温度,所述溶剂的用量至少足以使多聚甲醛溶解或悬浮;向加热的多聚甲醛中加入至少一种烷基磷酸酯,以提供羟甲基膦酸酯,所述烷基磷酸酯以避免或抑制产生显著的放热反应和产生高/显著水平的酸副产物的速率加入到加热的多聚甲醛中,在反应介质中存在至少一种受阻胺催化剂,其中胺中的氮直接结合到一个有机基团的二级和/或三级碳上;在加入完成后,可选择将反应混合物加热至高温。