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. 29, 1978
Filed:
Nov. 20, 1975
Applicant:
Inventor:
Vladimir Stoy, Prague, CS;
Assignee:
Ceschoslovak akademie ved, Prague, CS;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ;
U.S. Cl.
CPC ...
528491 ; 106122 ; 106198 ; 528492 ; 528493 ; 528494 ; 528495 ; 528496 ; 528497 ; 528498 ; 528499 ; 528502 ; 521 64 ;
Abstract
The invention relates to a method of manufacturing spherical particles, either homogeneous or porous, from polymer solutions, wherein a polymer solution is dispersed or suspended in a liquid dispersing medium incapable of dissolving the polymer and immiscible with the polymer solvent, and the emulsion thus obtained is poured, while stirring, into an excess of a polymer-coagulating liquid which is miscible with the polymer solvent but immiscible with the dispersing medium, whereafter the two liquid phases are separated from each other and from the spherical polymer particles which are then isolated.