[EN] PROCESS FOR THE PREPARATION OF 2-CARBOXY-ALKYL(ARYL)PHOSPHONIC ACIDS AND ANHYDRIDE(S)<br/>[FR] PROCEDE DE PREPARATION D'ACIDES 2-CARBOXY-ALKYL(ARYL)PHOSPHONIQUES ET D'ANHYDRIDE(S) ASSOCIE(S)
申请人:SOLUTIA INC
公开号:WO2001070752A1
公开(公告)日:2001-09-27
An improved hydrolysis process comprising a process for the preparation of 2-carboxyalkyl(aryl)phosphinic acid using a controlled addition of water to an acrylation reaction mixture, and control of the temperature. Preparation of 2-carboxyalkyl(aryl)phosphinic acid cyclic anhydride is disclosed using a controlled addition of water, wherein up to about one mole of water per mole of dichloro(aryl)-phosphine charged to the acrylation reaction is added, and temperature is controlled.