公开(公告)号：DE4002082A1

公开(公告)日：1991-08-01

申请号：DE4002082

申请日：1990-01-25

Applicant: HOECHST AG

Inventor： DUEBAL HANS-ROLF DR ,  MURAKAMI MIKIO ,  DROTLOFF HANS-OTTO DR ,  BREKNER MICHAEL DR

IPC: C09K19/56 ,  C08G65/40 ,  G02F1/1337

Abstract: The use of polyaryl ether ketones of the structural unit -O-A-O-B- gives alignment layers for liquid-crystal displays and switching elements which have high transparency, low water-absorption capacity and a particularly uniform alignment, both of smectic and nematic liquid crystals, and thus enable high contrast to be obtained.

公开(公告)号：DE4039924A1

公开(公告)日：1992-06-17

申请号：DE4039924

申请日：1990-12-14

Applicant: HOECHST AG

Inventor： DROTLOFF HANS-OTTO DR ,  HERRMANN-SCHOENHERR OTTO DR

IPC: C08G65/40 ,  C08G75/23 ,  C08L71/00 ,  C08L71/08 ,  C08L71/10

Abstract: Disclosed are polymer alloys containing (a) 60 to 98 % by wt. of at least one partly crystalline poly(aryl ether ketone) with a limiting viscosity number of 0.2-0.5 dl/g and (b) 40 to 2 % by wt. of at least one amorphous poly(aryl ether ketone) with a limiting viscosity number of 0.2-3.0 dl/g, the weights being based in each case on the total amount of components (a) plus (b) in the alloy. Such polymer alloys can be used to manufacture moulded articles or as matrix materials for composites.