Thermostable iron oxide pigments, processes for their production

Details Thermostable iron oxide pigments, processes for their production Thermostable iron oxide pigments, processes for their production

1992-11-16

1994-04-05

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106459, 106460, C09C 122

Patent

active

053001460

ABSTRACT:
Iron oxide pigments are made stable against oxidation and discoloration by a coating process. Preferred coating compounds are maleic acid hydrazide and phthalic acid.

REFERENCES:
patent: 3973982 (1976-08-01), Bingham
patent: 4264462 (1981-04-01), Buxbaum et al.
patent: 4404254 (1983-09-01), Franz et al.
patent: 4913063 (1990-04-01), Jonas
patent: 4952617 (1990-08-01), Ayala et al.

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