Process for preparing a block copolymer

Abstract

The present invention relates to a process for preparing a block copolymer comprising polyarylene ether and polyalkylene oxide blocks, comprising the reaction of an HO-terminated polyarylene ether with a monomeric alkylene oxide. The present invention also relates to a block copolymer obtainable from this process. The invention additionally relates to a triblock polymer with polyalkylene oxide-polyaryl ether-polyalkylene oxide blocks.

1 . A block copolymer comprising polyarylene ether and polyalkylene oxide blocks obtainable by a process comprising the reaction of an HO-terminated polyarylene ether with a monomeric alkylene oxide. 
     
     
         2 . The block copolymer according to  claim 1 , wherein the ratio of Mw/Mn of the block copolymer is from 1.5 to 3.0, as determined by means of gel permeation chromatography. 
     
     
         3 . The block copolymer according to  claim 1 , wherein the block copolymer is a triblock copolymer. 
     
     
         4 . The block copolymer according to  claim 1 , wherein the block copolymer has an Mw of 10 000 to 90 000 g/mol measured by means of GPC. 
     
     
         5 . The block copolymer according to  claim 1 , wherein the block copolymer has a viscosity number of 15 to 100, measured in a 1% solution of N-methylpyrrolidone at 25° C. to DIN EN ISO 1628-1. 
     
     
         6 . A block copolymer which is a triblock copolymer comprising polyalkylene oxide-polyaryl ether-polyalkylene oxide blocks. 
     
     
         7 . The block copolymer according to  claim 6 , wherein the ratio of Mw/Mn of the triblock copolymer is from 1.5 to 3.0, determined by means of gel permeation chromatography. 
     
     
         8 . A molding composition comprising from 1 to 60% by weight, based on the molding composition, of at least one block copolymer according to  claim 1 . 
     
     
         9 . A membrane comprising the block copolymer according to  claim 1 . 
     
     
         10 . A membrane comprising the molding composition according to  claim 8 . 
     
     
         11 . A method for producing coatings, films, fibers, moldings and/or membranes comprising utilizing the at least one block copolymer according to  claim 1 . 
     
     
         12 . A method for producing coatings, films, fibers, moldings and/or membranes comprising utilizing the molding composition according to  claim 8 .