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:
Oct. 04, 1983
Filed:
Feb. 16, 1982
Hiroyoshi Takao, Chiba, JP;
Yoshio Inoue, Ichihara, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A process for the separation treatment of a polymer solution characterized by, in separating and recovering polymer and polymerization solvent by flashing a polymer solution, heating said polymer solution under an elevated pressure sufficient to maintain said solution in a liquid phase, sending said solution into a flashing tank kept at an inner surface temperature of 140.degree. C. or above and a pressure ranging from ordinary pressure to 5 kg/cm.sup.2 G, flashing said solution to evaporate and separate the solvent, thereby concentrating said solution so that concentration of the polymer in said solution becomes 80% by weight or more, and recovering the concentrated solution from the bottom part of the flashing tank.