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. 03, 1993
Filed:
Apr. 21, 1992
Applicant:
Inventor:
Jacob Leidner, North York, CA;
Assignee:
Ortech Corporation, Mississauga, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01P / ;
U.S. Cl.
CPC ...
210773 ; 210737 ; 210738 ; 210766 ; 210774 ; 210781 ; 209-3 ; 209172 ; 521 465 ; 525225 ; 526209 ;
Abstract
A method is provided for recovering PVC from a material including PVC and one or more non-PVC components, in which the material is mixed with a sufficient amount of a plasticizer at an effective temperature, preferably in the range of 100.degree.-200.degree. C., to give a PVC: plasticizer ratio such that the PVC and plasticizer form a mixture which is a liquid at that temperature so that the liquid PVC/plasticizer can be separated from the non-PVC component or components.