申请人:DAIHACHI CHEMICAL INDUSTRY CO., LTD.
公开号:EP0690063A1
公开(公告)日:1996-01-03
A purification method of a phosphoric ester, which comprises treating a crude phosphoric ester with an epoxy compound, heating the resultant in the presence of water, washing the resultant with water, and removing the residual water. The obtained phosphoric esters have low acid value and are excellent in physical properties such as heat resistance, resistance to hydrolysis and storage stability, and are useful as plasticizers and/or flame-retardants.
一种
磷酸酯的提纯方法,包括用环氧化合物处理粗
磷酸酯,在有
水的情况下加热所得产物,用
水洗涤所得产物,然后除去残留的
水。得到的
磷酸酯酸值低,物理性能优异,如耐热性、抗
水解性和储存稳定性,可用作
增塑剂和/或阻燃剂。