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. 27, 1992
Filed:
Mar. 30, 1992
Applicant:
Inventors:
Jorg Hausdorf, Furth, DE;
Bardo Anselm, Laudenbach, DE;
Steffen Kosack, Hassloch, DE;
Peter Schafer, Heiligkreuzsteinach, DE;
Rolf Schneider, Bensheim-Zell, DE;
Stefan Seiderer, Gorxheimertal, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ;
U.S. Cl.
CPC ...
521 465 ;
Abstract
Reuseable polyvinyl chloride is recovered from solvent-loaded waste polyvinyl chloride paste by adding one twentieth of the paste weight of an acyl polyethylene glycol ester, then adding about twice the paste weight of water, while stirring, driving off the solvent by steam distillation, separating the solvent from the resulting two-phase distillate, and filtering off and drying the polyvinyl chloride granules floating in water left behind in the distillation residue.