Biege-brown encapsulated pigments and method of their production

Details Biege-brown encapsulated pigments and method of their production Biege-brown encapsulated pigments and method of their production

1990-03-02

1991-07-30

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106439, 106450, 427215, C09C 162

Patent

active

050357468

ABSTRACT:
Beige-brown encapsulated pigments are obtained by means of the encapsulation of iron titanates of the formula Fe.sub.2 TiO.sub.5 in zirconium silicate crystals. The production takes place by calcining a mixture of zirconium oxide with a particle size distribution of .ltoreq.5 .mu.m and specific surfaces of .gtoreq.4 m.sup.2 /g, silicon dioxide and iron oxides and titanium oxides or oxide-forming Fe compounds and Ti compounds in the presence of mineralizers under oxidizing conditions at 800.degree. to 1300.degree. C.

REFERENCES:
patent: 3488204 (1970-01-01), Jordan et al.
patent: 3847639 (1974-11-01), Broll et al.
patent: 4482390 (1984-11-01), Airey et al.
patent: 4788080 (1988-11-01), Hojo et al.
patent: 4874433 (1989-10-01), Kiss et al.

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