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. 18, 1995
Filed:
Mar. 11, 1994
Applicant:
Inventor:
Hermann Dallmeyer, Sarnia, CA;
Assignee:
Polysar Rubber Corporation, Sarnia, CA;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08C / ; C08F / ;
U.S. Cl.
CPC ...
523328 ; 523343 ; 528499 ; 528500 ;
Abstract
An improved process is provided for the recovery of a polymer from a solution thereof in a process wherein the polymer solution is contacted with hot water and steam to yield a slurry in water of polymer particles and a vapor stream comprising water vapor and the solvent, the slurry in water of polymer particles is passed to means to grossly separate the polymer particles and the water and the polymer particles are dried, wherein the water contains small particles of polymer and a portion thereof is mixed with the original polymer solution and the remaining portion is passed to the vessel wherein the polymer solution is first contacted with hot water and steam.