申请人:Solutia Europe N.V./S.A.
公开号:EP1681294A1
公开(公告)日:2006-07-19
A beneficial method for the manufacture of amino polyalkylene phosphonic acids, under substantial absence of hydrohalogenic acid, is disclosed. The method, in essence, is based on reacting narrowly defined ratios of phosphorous acid, an amine, a formaldehyde in presence of specific ranges of an acid catalyst having a pKa equal or inferior to 3.1. The inventive method is capable of yielding economically and quality operational/capacity advantages, in particular significantly reduced one-step cycle duration under exclusion of corrosion disadvantages and also is environmentally friendly without requiring, in that respect, anything more than nominal capital expenditures.
揭示了一种在实质上缺乏氢卤酸的情况下,用于制造氨基聚烯醚膦酸的有益方法。该方法本质上是基于在存在具有pKa等于或低于3.1的酸催化剂的特定范围内,反应磷酸、胺和甲醛的严格定义的比例。这种创新方法能够产生经济和质量操作/产能优势,特别是在排除腐蚀缺点的情况下显着减少一步循环持续时间,并且在环保方面无需更多的资本支出。