| 摘要 |
A beta -copper phthalocyanine pigment which consists, to the extent of more than 50% by weight, of flakes which are not less than 10 mu m long and 3 mu m wide, the length:width ratio being not less than 3.3:1, and which has a reflection maximum between 610 and 640 nm and another between 710 and 740 nm. In surface coatings and printing inks the pigment gives optical effects resembling those of metallic pigments. In a baking finish, reddish brown to bluish gray colorations with a metallic reflectance are obtained.
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