PRODUCTION OF FIBRID AND POLYARYLENE ETHER FIBRID

    公开(公告)号:JPH1060730A

    公开(公告)日:1998-03-03

    申请号:JP11541097

    申请日:1997-05-06

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To produce, by a single process, a fibrid that has high quality at low temperatures and is useful for paper, seals, friction brake lining, etc., by introducing a solution of a polyarylene ether in an appropriate solvent into a liquid solidifying medium under specific conditions. SOLUTION: This fibrid is obtained by introducing a solution of a polyarylene ether, such as polyarylene ether sulfone (preferably in concentration of 5-25wt.%) in an organic solvent, such as N-methylpyrrolidone and dimethylformamide, into a liquid solidifying medium while simultaneously giving the solution a shearing force so that a shearing space having an average energy density of 5W.s/cm or more is present during the introduction of the solution into the solidifying medium. In this case, the ratio by volume of the polymer solution to the solidifying medium is preferably in a range of from (1:10) to (1:20).

Patent Agency Ranking