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Title:
NOVEL COLORED THIN LEAF PIGMENT AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JPS6346265
Kind Code:
A
Abstract:

PURPOSE: To obtain the titled pigment suitable for lotion, cream, etc., free from color separation, by treating an aqueous suspension of fine powder of thin leaf with zinc hydroxide, etc., attaching inorganic pigment of fine particles to the fine powder and then calcining.

CONSTITUTION: (A) Fine powder of thin leaf is suspended in water, (B) the suspension is treated with (i) an aqueous solution zinc salt of an organic acid or inorganic acid and (ii) an aqueous solution of hydroxide or (bi)carbonate of alkali metal or ammonium or urea to attach zinc hydroxide or basic zinc carbonate to the surface of the fine powder of the component A and (C) inorganic pigment is applied to the surface of the fine powder by the use of inorganic pigment of fine particles. Then a solid substance is filtered off, washed with water, dried and calcined to give the aimed pigment.


Inventors:
NOGUCHI TAMIO
WATANABE RYUJI
Application Number:
JP18861486A
Publication Date:
February 27, 1988
Filing Date:
August 13, 1986
Export Citation:
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Assignee:
MERCK JAPAN KK
International Classes:
C09B67/02; C09C1/00; C09C3/06; (IPC1-7): C09B67/08; C09C3/06
Domestic Patent References:
JPS6094464A1985-05-27
JPS5876461A1983-05-09
JPS5821455A1983-02-08
JPS5278927A1977-07-02
JPS49128027A1974-12-07
JPS461192A
JPS62285956A1987-12-11
Attorney, Agent or Firm:
Takao Minami