Treatment of inorganic pigments with carboxymethylcellulose compounds
AssigneeMinerals Technologies Inc.
InventorGeorge H. Fairchild
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Abstract
The disclosed invention relates to a composition comprising finely divided particles of an inorganic material treated with a cellulose derivative modified by or containing at least one ionic substituent. The disclosed invention further relates to a method of providing paper of improved brightness. The disclosed invention also relates to a method of providing finely divided particles of inorganic material, treating the particles with a cellulose derivative modified by or containing at least one ionic substituent, and adding the treated particles to cellulose fiber during an alkaline process for making paper. Also, an alkaline paper comprising the finely divided particles of inorganic material treated with the cellulose derivative is disclosed.
Claims17
A composition for use as a paper making filler comprising an inorganic material containing a cellulose compound thereon.
A composition for use as a paper making filler comprising an inorganic material containing a cellulose compound which is modified by or which contains at least one ionic substituent, and which is present on the inorganic material in an amount of at least about 0.01% by weight.
Dependencies are inferred from the claim text.