Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD OF RECOVERING POLYVINYL CHLORIDE AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2002/077085
Kind Code:
A1
Abstract:
A method of recovering polyvinyl chloride from a waste comprising polyvinyl chloride which comprises: the step of removing the insoluble solid matter from a heated mixture of the waste and a solvent in which polyvinyl chloride is soluble; the step of contacting the residual solution with heated water to remove the solvent and thereby precipitate the polyvinyl chloride in the water; and the step of separating the polyvinyl chloride precipitate from the water. Thus, polyvinyl chloride can be continuously recovered from a waste comprising polyvinyl chloride.

Inventors:
YAMAMOTO KOJI (JP)
TANAKA TAKEHARU (JP)
Application Number:
PCT/JP2002/002736
Publication Date:
October 03, 2002
Filing Date:
March 22, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KOBE STEEL LTD (JP)
YAMAMOTO KOJI (JP)
TANAKA TAKEHARU (JP)
International Classes:
B02C19/00; B01D9/02; C08J11/08; (IPC1-7): C08J11/08
Foreign References:
JPH1112390A1999-01-19
US6172125B12001-01-09
JPH1081638A1998-03-31
Other References:
See also references of EP 1291382A4
Attorney, Agent or Firm:
Kotani, Etsuji (2-2 Nakanoshima 2-chom, Kita-ku Osaka-shi Osaka, JP)
Download PDF: