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:
Sep. 18, 2001
Filed:
Oct. 15, 1999
Applicant:
Inventors:
Assignee:
AGFA-Gevaert, , BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; G02F 1/1339 ; B41M 5/00 ; B29C 6/700 ;
U.S. Cl.
CPC ...
C08F / ; C08F / ; G02F 1/1339 ; B41M 5/00 ; B29C 6/700 ;
Abstract
Producing spherical polymers having a weight-averaged average particle diameter of 1 to 50 &mgr;m using a seed/feed process comprising the following steps: a) suspension of a monodisperse spherical seed in an aqueous phase, b) addition of at least one monomer and an initiator, c) polymerization of the monomer, of which there is at least one, wherein the seed consists of a polymer having a comb structure, gives rise to products having a particularly narrow grain size distribution.