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:
Mar. 27, 1990
Filed:
Feb. 03, 1988
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A process for producing monodisperse vinyl polymer fine particles is disclosed, which comprises polymerizing at least one monomer selected from the group consisting of vinyl aromatic compounds, acrylic esters, and methacrylic esters as dissolved in an organic solvent or a mixed solvent of water and an organic solvent, which is capable of dissolving said monomer or monomers but incapable of dissolving a produced polymer, wherein said polymerizing is carried out in the presence of partially saponified polyvinyl alcohol having a degree of saponification of from 5 to 75 mol % and a number average degree of polymerization of from 100 to 3,000 as a dispersion stabilizer and in the presence of a polymerization initiator. Monodisperse polymer particles having a particle size of the order of micron with a narrow size distribution can be obtained through the one-step polymerization.