The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1978
Filed:
Oct. 15, 1975
Applicant:
Inventors:
Julien Mulders, Dworp, BE;
Jacques Gilain, Brussels, BE;
Assignee:
Solvay & Cie., Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 75 ; 2605 / ; 526229 ; 526230 ; 526232 ; 526292 ;
Abstract
Salts of poly-.alpha.-hydroxyacrylic acid or their alkyl derivatives are obtained by thermally dehydrochlorinating .alpha., .beta.-dichloro-propionic acid or its alkyl derivatives into the corresponding .alpha.-chloroacrylic acid, polymerizing the .alpha.-chloroacrylic acid in water to obtain a solid product and neutralizing the solid product with an aqueous solution of alkali metal hydroxide or ammonium hydroxide. The poly-.alpha.-hydroxyacrylates are useful as sequestering agents or builders.