Process for preparing 1-hydroxyl-1-carboxylfatty phosphonic acid

Application Number  00128917 Application Date  2000.09.15
Publication Number  1309128 Publication Date  2001.08.22
Priority Information    
Applicant(s) Name  Lanzhou Petro-Chemical Branch, China National Petroleum Corp.  
Inventor(s) Name  Wei Cunfa;Lu Hong;Liang Baofeng  
Patent Agency Code  62004 Patent Agent  ma yanping
AbstractA process for synthesizing 1-hydroxy-1-carboxylfatty phosphonic acid includes adding water dropwise to phosphorus trichloride in a reacter bottle, controlling temp to 0-35 deg.c until the resultant HCl gas is volatilized off, slowly raising temp to 50-60 deg.C, adding the aqueous solution of alpha-carboxylfatty acid, raising temp to 85-100 deg.c and reaction for 10-15 hr. Its product can be directly used as water-treating agent with high corrosion-inhibiting effect and low cost.