Showa Alumi Powder K.k.

Showa Denko K.k.

Showa Alumi Powder Kabushiki Kaisha

Kajin Saito

Katsumi Kondo

Sinya Ozawa

Shunsuke Nagasaki

Takuya Tamou

A golden yellow pigment having good corrosion resistance and weather resistance is disclosed, which comprises titanium metal flakes the surfaces of which are covered with a titanium nitride layer, the titanium nitride-covered titanium metal flakes having a nitrogen content of from 5 to 22% by weight, an oxygen content of 2% by weight or less, and an aspect ratio of 10 or more.

Golden yellow pigment

Disclosed is a graded metal powder for metallic pigment, comprising a metal powder wherein the metal powder has a mean particle size of from about 2.5 to about 15.0 .mu.m, the content of particles having a particle size of not greater than 1 .mu.m is not larger than about 0.5% by volume, and the metal powder has a particle size distribution such that not smaller than 97% by volume of the particles of the metal powder fall within the range between half the mean particle size of the metal powder and double the mean particle size of the metal powder. Also is disclosed a process for producing a graded metal powder by classifying metal particles dispersed in a mineral oil containing a nonionic-anionic surfactant.

Process for producing metal powder having controlled particle size

Metal powder having controlled particle size distribution for metallic

Growing community of inventors

Nara, Japan

Kajin Saito