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:
Sep. 28, 1993
Filed:
Dec. 20, 1991
Applicant:
Inventors:
Gunther Deiringer, Kastl, DE;
Gerhard Edelmann, Hofheim am Taunus, DE;
Bernhard Rauxloh, Eberbach, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03D / ; B03D / ;
U.S. Cl.
CPC ...
209166 ; 209167 ; 209 11 ; 241D / ; 521 465 ; 521 48 ; 521 485 ;
Abstract
The invention relates to a process for separating off polyester plastics from a mixture of polyester, polyvinyl chloride and, if present, other plastics, wherein in the flotation the polyester remains as the residue and the polyvinyl chloride and, if present, other plastics are recovered in floated form, which comprises treating the mixture of plastics with an aqueous alkaline solution and separating off the polyester from polyvinyl chloride and, if present, other plastics by flotation.