公开(公告)号：JP2001154024A

公开(公告)日：2001-06-08

申请号：JP2000255435

申请日：2000-08-25

Applicant: BASF AG

Inventor： PRECHTL FRANK ,  SCHNEIDER NORBERT ,  MEYER FRANK ,  BLASCHKA PETER ,  HAREMZA SYLKE DR ,  HEZEL TILMANN ,  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: PROBLEM TO BE SOLVED: To provide a cholesteric layer material having improved color stability, and a method for manufacturing it and its use. SOLUTION: A cholesteric layer material, having at least one kind of cholesteric layer three-dimensionally cross-linked and aligned, is used. The cholesteric layer cross-linked will not show visible color slippages.

公开(公告)号：CA2316702A1

公开(公告)日：2001-02-27

申请号：CA2316702

申请日：2000-08-24

Applicant: BASF AG

Inventor： PRECHTL FRANK ,  RICHTER VOLKER ,  PARKER ROBERT ,  MEYER FRANK ,  SCHNEIDER NORBERT ,  HEZEL TILMANN ,  HAREMZA SYLKE ,  BLASCHKA 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 ,  C09K19/38 ,  B05D5/06

Abstract: The invention relates to cholesteric layered material having improved color shift stability, to pigments prepared therefrom, and to a process for the production and use thereof.

公开(公告)号：DE19940681A1

公开(公告)日：2001-03-01

申请号：DE19940681

申请日：1999-08-27

Applicant: BASF AG

Inventor： PRECHTL FRANK ,  SCHNEIDER NORBERT ,  MEYER FRANK ,  BLASCHKA PETER ,  HAREMZA SYLKE ,  HEZEL TILMANN ,  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 ,  C09K19/02 ,  C09D5/00 ,  C09D11/00 ,  G02F1/13

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).