Heat-stable iron oxide yellow pigments

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

C - Chemistry, Metallurgy

09

C

C09C 1/24 (2006.01) C04B 41/50 (2006.01) C04B 41/65 (2006.01) C08K 3/22 (2006.01) C09D 7/12 (2006.01) D21H 19/38 (2006.01)

Patent

CA 2254179

Pure-coloured iron oxide yellow pigments having a silking index of less than 5 and a heat resistance of greater than 220°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.

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