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:
Oct. 05, 1976
Filed:
Jul. 18, 1974
Applicant:
Inventors:
Noel Vanlautem, Brussels, BE;
Julien Mulders, Dworp, BE;
Assignee:
Solvay & Cie, Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603436 ; 260 / ; 2605 / ; 526227 ; 526229 ; 526232 ; 526292 ;
Abstract
Process for the manufacture of polylactones derived from poly-.alpha.-hydroxyacrylic acids comprises heating a liquid aqueous solution of .alpha., .beta.-dichloropropionic acid to a temperature above 100.degree.C to convert the .alpha.,.beta.-dichloropropionic acid to the corresponding .alpha.-chloroacrylic acid and polymerizing the .alpha.-chloroacrylic acid in the aqueous solution in the presence of a polymerization catalyst to polymerize, hydrolyze and lactonize the .alpha.-chloroacrylic acid. The products obtained can be used as intermediates for the synthesis of salts of poly-.alpha.-hydroxyacrylic acids.