Lightfast T102 pigment

Details Lightfast T102 pigment Lightfast T102 pigment

1996-08-22

1998-12-22

Le, H. Thi

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

106436, 106439, 106442, 106443, 106446, 428329, 428331, 428342, 4285375, B32B 516

Patent

active

058516522

ABSTRACT:
Rutile TiO.sub.2 pigment particles bearing coatings comprising:
(a) an inner layer comprising about 0.05-1 percent by weight, based on the weight of the TiO.sub.2, of cerium radicals and about a stoichiometric amount of phosphate radicals, based on the amount of cesium radicals,
(b) a second layer of about 0.1-4 percent by weight, based on the weight of the TiO.sub.2, of amorphous silica, and optionally
(c) an outer layer of (1) about 0.5 to 8 percent by weight, based on the weight of the TiO.sub.2, of hydrous alumina or (2) hydrous alumina in the amount of about 0.5-8 percent, based on the weight of the TiO.sub.2, and associated therewith up to about a stoichiometric amount of phosphate radicals needed to form aluminum phosphate,
the combined total weight of said coatings being about 2 to 12 percent by weight, based on the weight of the TiO.sub.2.

REFERENCES:
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patent: 4460655 (1984-07-01), Jacobson
patent: 4461810 (1984-07-01), Jacobson
patent: 4737194 (1988-04-01), Jacobson
patent: 4752340 (1988-06-01), Brand et al.
patent: 5338354 (1994-08-01), Melville et al.
patent: 5478550 (1995-12-01), Suzuki et al.

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