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:
Apr. 16, 1985
Filed:
Feb. 21, 1984
Robert A Florence, Scotia, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
Ionomers such as sulfonated polystyrenes are isolated from solutions in organic solvents (e.g., methylene chloride) in the salt form (usually the ammonium or amine salt form) by blending the ionomer solution with a solution of a salt in an organic liquid which is substantially a non-solvent for said ionomer. The salt is one in which the counterion is identical to that of the ionomer or below it in the ion affinity sequence, and is preferably an ammonium salt, especially ammonium chloride. The preferred organic liquid is methanol. The method enables recovery of the precipitated ionomer in finely divided, granular form rather than in colloidal condition.