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:
Jan. 03, 1984
Filed:
Aug. 11, 1980
Applicant:
Inventors:
Jacob Block, Rockville, MD (US);
Alan S Michaels, San Francisco, CA (US);
Assignee:
W. R. Grace & Co., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
525 58 ; 252 / ; 525 61 ; 536 88 ;
Abstract
A process for forming polymeric particles from water-soluble polymers by introducing the polymer into an aqueous salt solution in which the salt is of a composition and present in an amount sufficient to inhibit solubilization of the polymer therein and subsequently introducing into the aqueous medium a multifunctional reagent and mixing said aqueous medium for a time and at a temperature sufficient to cause reaction between the polymer and the reagent. The resultant solid polymer is readily recovered.