US 7,601,212 B2
	Pigment particles coated with polysaccharides and having improved properties
Subramaniam Sabesan, Wilmington, Del. (US); and John Davis Bolt, McEwen, Tenn. (US)
Assigned to E.I. du Pont de Nemours and Company, Wilmington, Del. (US)
Filed on Aug. 28, 2006, as Appl. No. 11/511,937.
Claims priority of provisional application 60/712678, filed on Aug. 29, 2005.
Prior Publication US 2007/0181038 A1, Aug. 09, 2007
Int. Cl. C04B 14/00 (2006.01); C04B 16/00 (2006.01); C04B 16/02 (2006.01); C09C 1/04 (2006.01); C09C 1/36 (2006.01); C08K 3/00 (2006.01); C08K 5/00 (2006.01); D21F 11/00 (2006.01); A01N 43/04 (2006.01); A61K 31/715 (2006.01); A61K 8/00 (2006.01); A61K 8/18 (2006.01); A61Q 17/04 (2006.01); A61Q 1/02 (2006.01); A61Q 1/04 (2006.01); A61Q 5/00 (2006.01); A61Q 9/00 (2006.01)

U.S. Cl. 106—416  [106/401; 106/419; 106/425; 106/429; 106/430; 106/431; 106/436; 106/450; 106/499; 106/501.1; 106/505; 162/146; 162/157.6; 514/57; 424/401; 424/59; 424/63; 424/64; 424/70.1]

25 Claims

1. A composition comprising titanium dioxide particles at least partially coated with at least one polysaccharide component, said polysaccharide component comprising at least one compound selected from ionic natural polysaccharides and ionic derivatives of natural polysaccharides, the titanium dioxide particles comprising a surface treatment material selected from the group consisting of aluminum phosphate, organo-silane, and organo-siloxane and mixtures thereof.