Black composite iron oxide pigment, and paint and resin composition using the same

A black composite iron oxide pigment comprising composite iron oxide particles having an average particle size of 0.08 to 1.0 μm, a geometrical standard deviation value of the average particle size of not more than 2.0, comprising:

• as core particles iron oxide particles,
• a coating formed on surface of said iron oxide particle, comprising at least one organosilicon compound selected from the group consisting of:
• (1) organosilane compounds obtainable from alkoxysilane compounds, and
• (2) polysiloxanes or modified polysiloxanes, and
• an organic blue-based pigment coat formed on said coating comprising said organosilicon compound, in an amount of from 1 to 50 parts by weight based on 100 parts by weight of said iron oxide particles.

A black composite iron oxide pigment comprising composite iron oxide particles having an average particle size of 0.08 to 1.0 μm, comprising:

• (A) as core particles composite iron oxide particles precursor, comprising:
• iron oxide particles,
• a coating formed on the surface of said iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of:
• (1) organosilane compounds obtainable from alkoxysilane compounds, and
• (2) polysiloxanes or modified polysiloxanes, and
• a carbon black coat formed on at least a part of the surface of said coating layer comprising said organosilicon compound, in an amount of 1 to 30 parts by weight based on 100 parts by weight of the said iron oxide particles;
• (B) a coating formed on the carbon black coat, comprising at least one organosilicon compound selected from the group consisting of:
• (1) organosilane compounds obtainable from alkoxysilane compounds, and
• (2) polysiloxanes or modified polysiloxanes;
• and
• (C) an organic blue-based pigment coat formed on said coating comprising said organosilicon compound, in an amount of from 1 to 50 parts by weight based on 100 parts by weight of said iron oxide particles.