Title:
【発明の名称】空隙干渉顔料、その製造方法および使用
Document Type and Number:
Japanese Patent JPH02504527
Kind Code:
A
Abstract:
Laminated air-gap interference pigments are characterized by contiguous layers of medium- to low-refraction minerals with thin intercalated air-gaps less than 1 mu m thick, and by a diameter-to-thickness ratio of the laminae between 1:5 and 1:50. The pigments are obtained by subjecting three- and four-layer phyllosilicates to a heat treatment at a temperature greater than that at which H20, OH or F are released.
Inventors:
Corp, hans
Application Number:
JP50530189A
Publication Date:
December 20, 1990
Filing Date:
May 26, 1989
Export Citation:
Assignee:
Nainyuyu Mineral Werke Gezershyaft Mitt Beshiyu Renktel Haftung
International Classes:
A61K8/19; A61K8/25; A61K8/30; A61Q1/02; C01B33/26; C01B33/38; C01B33/42; C09C1/00; A61K8/18; C09C1/28; C09C1/40; C09D7/12; C09D17/00; D21H19/38; (IPC1-7): A61K7/02; C01B33/26; C09C1/00; C09C1/28; C09C1/40; C09D7/12; C09D17/00; D21H19/38
Attorney, Agent or Firm:
Toshio Yano (1 outside)