Lustrous pigment and the method of producing the same

Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...

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106415, 106455, 106459, 427218, C09C 122

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active

055000436

ABSTRACT:
The object of the present invention is to provide a lustrous pigment free from the defects of conventional platelike or flaky iron oxide pigments that a mechanical strength is poor, adjustable colors are restricted and that a pigment lustrous is weak even if colors can adjusted variously and a method of producing the same. The present invention relates to a flaky iron oxide lustrous pigment having a hematite structure characterized by containing at least one of the elements selected from Zn, Sb and Sn and Al in solid solution and its platelike crystal having an average thickness of 0.8 .mu.m or more, preferably the content of at least one of the elements selected from Zn, Sb and Sn being in the range of 0.05 to 0.5 weight % as oxides and the content of Al being in the range of 0.5 to 3 weight % as Al.sub.2 O.sub.3.

REFERENCES:
patent: 4373963 (1983-02-01), Uenishi et al.
patent: 4374677 (1983-02-01), Senda et al.
patent: 4376656 (1983-03-01), Senda et al.
patent: 4404254 (1983-09-01), Franz et al.
patent: 4780140 (1988-10-01), Franz et al.
patent: 4826537 (1989-05-01), Ostertag
Database WPI, Week 904, Derwent Publications Ltd., London, GB; AN 90-026289 & JP-A-1 304 160 (Toda Kogyo), 7 Dec. 1989.
Abstract of JP-A-80104923, Aug. 1980.

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