Titanium, cerium and alkaline or earth-alkaline based compound, preparation methods and use as colouring pigment

A process for the preparation of a titanium-, cerium- and alkaline- or alkaline-earth-based compound of the formula (1):

• MxCeyTizOt
• wherein:
• M represents an alkaline or an alkaline-earth metal, and
• x, y and z satisfy the following equations:
• 1.1≦y/z≦1.5,
• 2≦(x+z)/y≦15,
• x+y+z=1, and
• (x+3y+4z)/2≦t≦(x+4y+4z)/2,
• comprising the steps of:
• a) bringing together a cerium compound, a titanium compound and a base in a liquid medium, whereby a precipitate is obtained;
• b) bringing together a compound of the metal M and the precipitate obtained in above step a);
• and
• c) drying and calcining the mixture thus formed.

Plastics materials, paints, wood stains, rubbers, ceramics, glazes, paper, inks, cosmetics, dyes, leathers, laminated coatings, and materials based on or obtained from at least one inorganic bonding material, comprising as a pigment a titanium-, cerium- and alkaline- or alkaline-earth-based compound of the formula (1):

• MxCeyTizOt
• wherein:
• M represents an alkaline or an alkaline-earth metal, and
• x, y and z satisfy the following equations:
• 2.1≦y/z≦1.5,
• 3≦(x+z)/y≦15,
• x+y+z=1, and
• (x+3y+4z)/2≦t≦(x+4y+4z)/2.