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CHEMICALLY BULKED KAOLIN CLAY PIGMENT COMPATIBLE WITH CALCIUM CARBONATE AND ITS PRODUCTION
CHEMICALLY BULKED KAOLIN CLAY PIGMENT COMPATIBLE WITH CALCIUM CARBONATE AND ITS PRODUCTION
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机译:与碳酸钙相容的化学膨润土高岭土颜料及其生产
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摘要
In a process for preparing a white pigment mixture suitable for coating paper wherein a cationically bulked kaolin clay pigment is dispersed in water in the presence of an anionic dispersant and mixed with a calcium carbonate pigment, the improvement which comprises using an epichlorohydrin amine complex to bulk said kaolin, and employing as the dispersant the combination of at least 0.2% based on the dry weight of said cationically bulked kaolin of a condensed naphthalene sulfonate complex having a molecular weight of 2000 to 10,000 and a sodium polyacrylate salt having a molecular weight of 2000 to 5000, said dispersant being free from lignosulfonate.
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