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US07892345B2 Method for producing transparent Pigment Violet 23 有权
透明颜料紫的制造方法23

Method for producing transparent Pigment Violet 23
摘要:
The invention accordingly relates to a method for preparing transparent C.I. Pigment Violet 23 by salt kneading a Pigment Violet 23-crude in the presence of a crystalline salt and an organic liquid. Said method is characterized in that the organic liquid is propylene carbonate.
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