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1.发明授权Removing unreacted monomers from acrylonitrile polymer solutions and concentration of the solutions 失效从丙烯腈聚合物溶液中除去无关单体和解决方案的浓度
公开(公告)号：US3634300A
公开(公告)日：1972-01-11
申请号：US3634300D
申请日：1970-11-04
Applicant: BASF AG
Inventor： FISCHER HERMANN , HEIL EDUARD , SWOBODA JOHANN , THOMA RICHARD
CPC classification number: C08F6/10
Abstract: A CONTINOUS PROCESS FOR THE REMOVAL OF RESIDUAL MONOMERS FROM SOLUTION OF ACRYLONITRILE POLYMERS IN DIMETHYLFORMAMIDE AND FOR CONCENTRATING THE SOLUTIONS IN A SEQUENCE OF SEPARATING ZONES PRESSURE RELEASE ZONES, HEATING ZONES AND PRESSURE RELEASE ZONES. THE PROCESS IS DISTINGUISHED BY SHORT RESIDENCE TIMES AND ONLY SLIGHT DAMAGE TO THE POLYMER SOLUTIONS. THE SOLUTIONS OBTAINED MAY SERVE FOR THE PRODUCTION OF FILAMENTS, THREADS OR FIBERS.
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