WIDE RANGE LIQUID CRYSTAL PIGMENT

Title:

WIDE RANGE LIQUID CRYSTAL PIGMENT

Document Type and Number:

Japanese Patent JP2001261739

Kind Code:

A

Abstract:

To provide a wide range liquid crystal pigment having no defects belonging to conventional technique and a method of producing the same, especially a method producing the same in an industrial scale.

This liquid crystal pigment is a liquid crystal material having at least a layer comprising a liquid crystal polymer having a helically twisted molecular structure in which the axis of the helix is oriented substantially vertical to a plane of the layer, and exhibits a circularly polarized light reflection and the bandwidth of the wavelength of the reflection of the pigment is >100 nm. This invention also relates to a method producing the pigment and methods using the pigment for an ornamental use, cosmetics and medical composition, optical use and a reflecting film or coating for crime prevention.

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Inventors:

GOULDING MARK
KUNTZ MATTHIAS
VERRALL MARK
COATES DAVID

Application Number:

JP2001075848A

Publication Date:

September 26, 2001

Filing Date:

March 16, 2001

Export Citation:

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Assignee:

MERCK PATENT GMBH

International Classes:

G02B5/26; C08F20/30; C09B67/20; C09K19/00; C09K19/02; C09K19/54; G02B5/30; G02F1/13363; (IPC1-7): C08F20/30; G02B5/26; G02B5/30; G02F1/13363

Attorney, Agent or Firm:

Kiyokazu

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