Heat-stable iron oxide yellow pigments

Details Heat-stable iron oxide yellow pigments Heat-stable iron oxide yellow pigments

1998-11-16

2000-09-12

Koslow, C. Melissa

Compositions: coating or plastic

Materials or ingredients

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

106457, 106459, 106212, 423632, C01G 4902

Patent

active

061172286

ABSTRACT:
Pure-coloured iron oxide yellow pigments having a silking index of less than 5 and a heat resistance of greater than 220.degree. C. in polyethylene for at least 5 minutes are obtained by oxidation of metallic iron with nitrobenzene in an acid medium in the presence of compounds of elements chosen from main groups 3 and 4 of the periodic table.

REFERENCES:
patent: 4053325 (1977-10-01), Vanderheiden
patent: 4374677 (1983-02-01), Senda et al.
patent: 4376656 (1983-03-01), Senda et al.
patent: 4620879 (1986-11-01), Burow et al.
patent: 4698100 (1987-10-01), Burow et al.
patent: 4734136 (1988-03-01), Burow

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