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:
May. 31, 1977
Filed:
May. 02, 1975
Applicant:
Inventors:
Morand Lambla, Hoenheim, FR;
Jean Terrisse, Pont a Mousson, FR;
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR), Nueilly sur Seine, FR;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
260827 ; 260 / ; 260 / ; 260879 ; 2608 / ; 260884 ; 260885 ; 260886 ;
Abstract
There is disclosed a process of dispersion-polymerizing vinyl monomers promoted by free-radical catalysts. This process comprises dispersing under stirring in water a block copolymer of the A-B type wherein A represents a lipophilic block and B a hydrophilic block, adding one or more vinyl monomers containing the promoter and heating the mixture with stirring to the desired temperature. This process enables beads or balls of the desired polymer to be obtained having very regular size distribution.