Titanium dioxide dispersions and processes for their production

Details Titanium dioxide dispersions and processes for their production Titanium dioxide dispersions and processes for their production

1985-06-25

1987-07-28

Yarbrough, Amelia B.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106195, 106299, 106300, 527313, 527314, C09C 136

Patent

active

046830073

ABSTRACT:
Dispersions of titanium dioxide pigments with improved long-term resistance to pigment settling and precipitation are disclosed. The pigment dispersions are formed by chemically grafting vinyl and/or acrylic polymers to nitrocellulose in dispersions of nitrocellulose and titanium dioxide pigments. Nitrocellulose forms a loose association with titanium dioxide in dispersion. The chemical grafting improves the precipitation and settling resistance of nitrocellulose, and thus the precipitation and settling resistance of the associated titanium dioxide.

REFERENCES:
patent: 2602756 (1952-07-01), Hucks
patent: 3673135 (1972-06-01), Blake et al.
patent: 4435531 (1984-03-01), Nakayama et al.
Derwent Abstract Accession No. 73-38502U/27, Japanese Patent No. J73014772-B.
Chemical Abstract, vol. 80, No. 135037m, Japanese Patent No. 73/45527, Jun. 29, 1973.

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