Production of readily dispersible titanium dioxide pigments

Details Production of readily dispersible titanium dioxide pigments Production of readily dispersible titanium dioxide pigments

1979-08-28

1980-11-25

McCarthy, Helen M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106300, 106308M, 106308Q, 260 4214, C09C 136, C09C 310

Patent

active

042357683

ABSTRACT:
In the homogeneous coating of a titanium dioxide pigment with an organic polymer in which an aqueous solution of a polymer containing carboxyl groups is added to a dispersion of titanium dioxide in water, the polymer is applied to the pigment, the coated pigment is separated off from the aqueous medium, washed, dried and, optionally ground, the improvement which comprises employing as the polymer a polymer of the formula ##STR1## in which R.sub.1 each independently is hydrogen or methyl,

REFERENCES:
patent: 3642510 (1972-02-01), Sugiyama et al.
patent: 3945843 (1976-03-01), Holty et al.
patent: 3963512 (1976-06-01), Swift et al.
patent: 4036652 (1977-07-01), Rothmayer
patent: 4062692 (1977-12-01), Hemmerich et al.

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