B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
202/56, 149/12.1
B08B 3/08 (2006.01) B01J 19/00 (2006.01) B08B 9/08 (2006.01) C08J 11/02 (2006.01) C11D 7/06 (2006.01) C11D 7/50 (2006.01) C11D 7/32 (2006.01) C11D 7/34 (2006.01)
Patent
CA 1204371
- 1 - SPECIFICATION Title of the Invention WASHING AND REMOVAL METHOD OF HIGH MOLECULAR SUBSTANCES AND RECOVERY METHOD OF WASHING SOLVENT Abstract of the Disclosure Disclosed herein is to add water and the hydroxide of an alkali metal or alkaline earth metal to a washing solvent such as an alkylamide and/or alkylsulfoxide when washing and removing high molecular substances stuck on the interior of a production apparatus or molding machine for an aromatic vinyl-acrylonitrile copolymer. Also disclosed is a method for regenerating and recovering the washing solvent used for the above-mentioned washing and removal by means of an evaporator and distillation tower.
405509
Asanuma Tadashi
Fujio Ichiro
Kaneko Masahiro
Shiomura Tetsunosuke
Uchikawa Nobutaka
Mitsui Chemicals Incorporated
Sim & Mcburney
Toyo Engineering Corporation
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