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NON-MICRONIZED PIGMENT FOR PLASTICS APPLICATIONS.
NON-MICRONIZED PIGMENT FOR PLASTICS APPLICATIONS.
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机译:塑料应用的非微粉化颜料。
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摘要
A cost-effective process for loading particulate pigment into a polymer concentrate includes adding a basic pH aqueous solution having a water soluble organic salt to a milled particulate pigment to form an organic-coated particulate pigment. The pH of the basic aqueous solution is sufficiently basic that the water soluble organic salt remains in a salt form. Without a prior micronization step, the organic-coated particulate pigment is mixed with a polymer resin to form a polymer concentrate having from about 50% to about 87% by weight particulate pigment with dispersibility comparable to micronized organic-coated particulate pigment.
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