公开(公告)号：DE50005489D1

公开(公告)日：2004-04-08

申请号：DE50005489

申请日：2000-08-25

Applicant: BASF AG

Inventor： PRECHTL DR ,  SCHNEIDER NORBERT ,  MEYER DR ,  BLASCHKA PETER ,  HAREMZA DR ,  HEZEL DR ,  PARKER ROBERT ,  RICHTER VOLKER

IPC: G02B5/30 ,  C08F2/46 ,  C08F20/26 ,  C09B67/00 ,  C09B67/02 ,  C09B67/08 ,  C09B67/20 ,  C09D5/29 ,  C09D5/36 ,  C09D201/00 ,  C09K19/00 ,  G02F1/1335

Abstract: Cholesteric laminate material, comprises at least one 3-dimensionally crosslinked, oriented cholesteric layer (I) which shows no color shift that can be induced by external stimuli. Independent claims are also included for the following: (a) cholesteric pigment comprising layer(s) (I) with an average particle size of 5-50 mu m and thickness of 0.2-5 mu m; (b) compositions containing the pigment(s); (c) polarizers, comprising the laminate and optionally a substrate foil; (d) broad band polarizers comprising laminates with a total thickness of about 2-50 mu m (without substrate film) and 3-20 cholesteric layers with attuned reflection maxima; and (e) the production of the laminate with layer(s) (I).

公开(公告)号：DE19940682A1

公开(公告)日：2001-03-01

申请号：DE19940682

申请日：1999-08-27

Applicant: BASF AG

Inventor： MEYER FRANK ,  PRECHTL FRANK ,  SCHNEIDER NORBERT ,  HEILMANN PETER ,  KOCH VOLKER ,  PARKER ROBERT ,  RICHTER VOLKER ,  SCHUHMACHER PETER

IPC: G02B5/30 ,  C08F2/46 ,  C08F20/26 ,  C09B67/00 ,  C09B67/02 ,  C09B67/08 ,  C09B67/20 ,  C09D5/29 ,  C09D5/36 ,  C09D201/00 ,  C09K19/00 ,  G02F1/1335 ,  C09K19/02 ,  C09D5/00 ,  C09D11/00 ,  G02F1/13

Abstract: Cholesteric laminate material has at least one 3-dimensionally crosslinked, oriented cholesteric layer (I) showing a homogeneous interference line pattern over the entire thickness. Independent claims are also included for the following: (a) cholesteric pigment comprising layer(s) (I) with an average particle size of 5-50 mu m and thickness of 0.2-5 mu m; (b) compositions containing the pigment(s); (c) polarizers, comprising the laminate and optionally a substrate foil; (d) broad band polarizers comprising laminates with a total thickness of about 2-50 mu m (without substrate film) and 3-20 cholesteric layers with attuned reflection maxima; and (e) the production of the laminate with layer(s) (I).

公开(公告)号：CA980639A

公开(公告)日：1975-12-30

申请号：CA156757

申请日：1972-11-15

Applicant: BASF AG

Inventor： WOELLHAF JOSEF ,  BALZ WERNER ,  FALK ROLAND ,  SCHEFFEL DIETER ,  RICHTER VOLKER ,  WILLMANN PAUL

IPC: G11B5/82 ,  B05C11/08 ,  B05D1/00 ,  B05D1/40 ,  G03D5/04 ,  G11B5/842 ,  H01L21/027 ,  H01L21/304