PROCESS FOR PRODUCING POLY(ARYLENE SULFIDE), AND POLY(ARYLENE SULFIDE)

Title:

PROCESS FOR PRODUCING POLY(ARYLENE SULFIDE), AND POLY(ARYLENE SULFIDE)

Document Type and Number:

WIPO Patent Application WO/2016/199869

Kind Code:

A1

Abstract:

Provided are: a process for producing a poly(arylene sulfide) (PAS) while an organic amide solvent is efficiently recovered at low energy cost without requiring the use of any organic solvent from a waste liquid resulting from the cleaning, with a water-containing solvent, of a raw-material mixture comprising the PAS and the organic amide solvent; the process for PAS production wherein the amount of water to be supplied when cleaning the raw-material mixture with a water-containing solvent is reduced; and a PAS produced by either of the processes. The processes according to the present invention each comprise a step in which a raw-material mixture comprising a PAS and an organic amide solvent is mixed with a water-containing solvent to clean the PAS, a step in which the resultant mixture is subjected to solid-liquid separation, thereby obtaining a separated liquid, and a step in which the separated liquid is separated by heating into a distillate vapor, in which the content of the organic amide solvent is lower, and a recovered liquid, in which the content of the organic amide solvent is higher, the heating being conducted while utilizing a temperature rise due to compression of the distillate vapor and/or compression of a heat medium having been heat-exchanged with the distillate vapor.

More Like This:

WO/2020/080898	METHOD FOR SEPARATING AND REFINING POLYARYLENE SULFIDE
WO/2020/216615	POWDERED MATERIAL (P) CONTAINING POLY(ARYLENE SULFIDE) (PAS) POLYMER AND ITS USE FOR ADDITIVE MANUFACTURING
JP2021130792	METHOD FOR PRODUCING POLYARYLENE SULFIDE

Inventors:

MIYAHARA MICHIHISA (JP)
SUZUKI KENJI (JP)
KATAYOSE YUICHI (JP)
KIMURA TAKAYUKI (JP)

Application Number:

PCT/JP2016/067267

Publication Date:

December 15, 2016

Filing Date:

June 09, 2016

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KUREHA CORP (JP)

International Classes:

C08G75/0204; B01D3/14; C08G75/0254; C08G75/0281

Foreign References:

JP2013155284A	2013-08-15
JP2014005207A	2014-01-16
JP2014168740A	2014-09-18

Attorney, Agent or Firm:

SHOBAYASHI, Masayuki et al. (JP)
Right wood Masayuki (JP)

Download PDF:

View/Download PDF PDF Help

Previous Patent: AQUEOUS RESIN COMPOSITION FOR TOUCH PANEL, TRANSFER FILM, CURED FILM LAMINATE, METHOD FOR PRODUCING ...

Next Patent: COMBINATION WEIGHING DEVICE