JPS57209910A - Removal of high molecular substance by washing - Google Patents
Removal of high molecular substance by washingInfo
- Publication number
- JPS57209910A JPS57209910A JP9379681A JP9379681A JPS57209910A JP S57209910 A JPS57209910 A JP S57209910A JP 9379681 A JP9379681 A JP 9379681A JP 9379681 A JP9379681 A JP 9379681A JP S57209910 A JPS57209910 A JP S57209910A
- Authority
- JP
- Japan
- Prior art keywords
- washing
- mixture
- substance
- alkylamide
- removal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Detergent Compositions (AREA)
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To remove a high-MW substance deposited in the apparatus during the production or molding of an aromatic vinyl/acrylonitrile copolymer nearly completely within a short time, by washing the high-MW substance with a mixture of an alkylamide, a specified hydroxide and water.
CONSTITUTION: An apparatus for the production or molding an aromatic vinyl/ acrylonitrile copolymer, acrylonitrile content 5W33wt%, is charged with a mixture of an alkylamide (e.g., dimethylformamide) and/or an alkyl sulfoxide (e.g., dimethyl sulfoxide), 1.0×10-4W1.0g eq./l of a hydroxide of the formula, wherein n is 1 or 2 and when n=1, M is an alkali metal, and when n=2, M is an alkaline earth metal and 0.03W3.0wt% water. The mixture is heated, with stirring, to about the glass transition point of the high-MW compound or higher. In this way, the high-MW substance deposited on the apparatus is removed by washing.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9379681A JPS57209910A (en) | 1981-06-19 | 1981-06-19 | Removal of high molecular substance by washing |
IN687/CAL/82A IN158315B (en) | 1981-06-19 | 1982-06-15 | |
GB08217465A GB2101613B (en) | 1981-06-19 | 1982-06-16 | Cleansing apparatus in which vinyl-acrylonitrile systems polymerise |
MX193207A MX164784B (en) | 1981-06-19 | 1982-06-17 | METHOD FOR WASHING AND REMOVING HIGHLY MOLECULAR SUBSTANCES AND METHOD FOR RECOVERING THE WASHING SOLVENT |
US06/389,764 US4468257A (en) | 1981-06-19 | 1982-06-18 | Washing and removal method of high molecular substances |
IT21938/82A IT1152424B (en) | 1981-06-19 | 1982-06-18 | WASHING METHOD AND REMOVAL OF HIGH MOLECULAR WEIGHT SUBSTANCES AND WASHING SOLVENT RECOVERY METHOD |
CA000405509A CA1204371A (en) | 1981-06-19 | 1982-06-18 | Washing and removal method of high molecular substances and recovery method of washing solvent |
KR8202738A KR890002372B1 (en) | 1981-06-19 | 1982-06-19 | Washing and removal method of high moleculor substances |
BR8203624A BR8203624A (en) | 1981-06-19 | 1982-06-21 | PROCESS FOR WASHING AND REMOVING HIGH MOLECULAR WEIGHT SUBSTANCES ADHERED INSIDE A PRODUCTION APPLIANCE OR MOLDING MACHINE IN THE PRODUCTION OR MOLDING OF AN AROMATIC-ACRYLONITRILLA VINYL COPOLYMER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9379681A JPS57209910A (en) | 1981-06-19 | 1981-06-19 | Removal of high molecular substance by washing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57209910A true JPS57209910A (en) | 1982-12-23 |
JPS61848B2 JPS61848B2 (en) | 1986-01-11 |
Family
ID=14092374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9379681A Granted JPS57209910A (en) | 1981-06-19 | 1981-06-19 | Removal of high molecular substance by washing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57209910A (en) |
-
1981
- 1981-06-19 JP JP9379681A patent/JPS57209910A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS61848B2 (en) | 1986-01-11 |
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