Title:
SURFACE-MODIFIED PLATELET-LIKE PIGMENT
Document Type and Number:
Japanese Patent JP3258708
Kind Code:
B2
Abstract:
PURPOSE: To obtain a platelet-like pigment increased in light stability and reduced in the surface reactivity to an org. compd. by separating a reaction product obtained by adding a specific compd. to an aq. suspension of a platelet-like substrate coated with a TiO2 coating layer and washing the separated reaction product before heating the same to high temp.
CONSTITUTION: A water-soluble titanate, a water-soluble alkaline earth metal salt or a mixture of them and a water-soluble 1,2-diol compd. are added to an aq. suspension of a platelet-like substrate coated with TiO2 under a condition generating an alkaline earth metal titanium oxo-complex or peroxo-complex to form a reaction product which is, in turn, separated, washed and, if necessary, dried. This reaction product is subsequently ignited at least at 800°C to produce a surface-modified platelet-like pigment based on a platelet-like substrate coated with a TiO2 layer and a thin film of an alkaline earth metal titanate successively.
Inventors:
Claus-Dieter Franz
Johann Dietz
Manfred Keyser
Johann Dietz
Manfred Keyser
Application Number:
JP16949792A
Publication Date:
February 18, 2002
Filing Date:
June 26, 1992
Export Citation:
Assignee:
Merck Patent Gesellschaft Mitt Beschlenktel Haftung
International Classes:
C09C1/36; A61K8/18; A61K8/29; A61Q1/02; C08K3/20; C08K9/00; C08K9/02; C09B1/36; C09C1/00; C09C3/06; C09D5/36; C09D7/12; C09D17/00; (IPC1-7): C09C3/06; A61K7/02; C08K3/20; C08K9/02; C09C1/36; C09D7/12
Domestic Patent References:
| JP269573A | ||||
| JP428771A | ||||
| JP5933364A |
Attorney, Agent or Firm:
Nobuyuki Kaneda (2 others)