Title:
A METHOD FOR POST-PROCESSING VINYL CHLORIDE-BASED POLYMER, AND CLOSED-TYPE POST-PROCESSING SYSTEM FOR SAME
Document Type and Number:
WIPO Patent Application WO/2021/020733
Kind Code:
A1
Abstract:
The present invention provides a method for post-processing a vinyl chloride-based polymer, comprising the steps of: (a) forming a vinyl-chloride-based polymer powder by drying vinyl chloride-based polymer latex in a dryer (11); (b) filtering, in a filter part (21), a stream comprising the vinyl chloride-based polymer powder and an unreacted vinyl chloride-based monomer; and (c) recirculating, to a latex storage part (1), the unreacted vinyl chloride-based monomer discharged via the upper part of the filter part (21).
Inventors:
BAE HEUNG KWON (KR)
LEE HYUN MIN (KR)
YOUK KYUNG SEOG (KR)
LIM JOONG CHUL (KR)
LEE SE WOONG (KR)
LEE JUNG RAE (KR)
LEE HYUN MIN (KR)
YOUK KYUNG SEOG (KR)
LIM JOONG CHUL (KR)
LEE SE WOONG (KR)
LEE JUNG RAE (KR)
Application Number:
PCT/KR2020/008084
Publication Date:
February 04, 2021
Filing Date:
June 22, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08F6/00; C08F2/01; C08F14/06; C08J3/12
Foreign References:
| JP2002060416A | 2002-02-26 | |||
| JP2003213008A | 2003-07-30 | |||
| KR20150025805A | 2015-03-11 | |||
| JPH07113044B2 | 1995-12-06 | |||
| JP2004143329A | 2004-05-20 | |||
| JP3886856B2 | 2007-02-28 | |||
| KR101202627B1 | 2012-11-19 |
Other References:
See also references of EP 3816197A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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