公开(公告)号：JP2000033246A

公开(公告)日：2000-02-02

申请号：JP18750799

申请日：1999-07-01

Applicant: BASF AG

Inventor： MEHLER CHRISTOF DR ,  GOTTSCHALK AXEL ,  BREINER ULRIKE DR ,  STADLER REIMUND ERICH ,  GOLDACKER THORSTEN

IPC: B01D71/44 ,  B01D53/22 ,  B01D71/80 ,  C08L53/00

Abstract: PROBLEM TO BE SOLVED: To adjust permeability and to improve separation technology by using a microphase separation polymer blend containing an A-B-C three-block copolymer having an elastomeric middle block B and an A'-C' two-block copolymer. SOLUTION: A microphase separation polymer blend comprising an A-B-C threeblock copolymer and an A'-C' two-block copolymer is used in order to produce a permeable membrane. A suitable A-B-C three-block copolymer has an elastomeric middle block B. An olefinic unsaturated compound of specified conditions is used in order to form the block B. In order to produce an A-B-C/A '-C' polymer blend, the two-block copolymer and the three-block copolymer are added into an organic solvent, and the solution is poured in a polar liquid medium such as methanol, ethanol, water, and the mixture of them. This deposition/precipitation treatment is done under strong stirring.

公开(公告)号：DE19829397A1

公开(公告)日：2000-01-05

申请号：DE19829397

申请日：1998-07-01

Applicant: BASF AG

Inventor： MEHLER CHRISTOF ,  GOTTSCHALK AXEL ,  BREINER ULRIKE ,  STADLER RAIMUND ,  GOLDACKER THORSTEN

IPC: B01D71/44 ,  B01D53/22 ,  B01D71/80 ,  C08L53/00 ,  C08L53/02

Abstract: Microphase-separated polymer mixtures comprising A-B-C 3-block copolymers with an elastomeric middle block B and A'-C' 2-block copolymers are used for the production of permeable membranes. An Independent claim is also included for membranes consisting of these polymer mixtures.