Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2006-05-30
2010-02-23
Le, H. (Holly) T (Department: 1794)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C424S059000, C424S069000, C424S617000, C424S641000, C424S642000, C424S646000, C424S691000, C427S215000, C427S221000
Reexamination Certificate
active
07666506
ABSTRACT:
The present invention relates to surface-modified nanoparticulate metal oxides where the metal is chosen from the group consisting of aluminum, cerium, iron, titanium, zinc and zirconium, wherein the surface modification comprises a coating with a copolymer P comprising, as monomers,A) 1 to 99 mol % of a N-vinylamide N-vinylpyrrolidone andB) 99 to 1 mol % of a monomer comprising, per molecule, a free-radically polymerizable α,β-ethylenically unsaturated double bond and an anionogenic and/or anionic group,with the proviso that the copolymer P must comprise no further monomers chosen from the group consisting of C8-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids, N-alkyl- or N,N-dialkyl-substituted amides of acrylic acid or of methacrylic acid with C8-C18-alkyl radicals, or vinyl esters of aliphatic C8-C30-carboxylic acids.
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Andre Valerie
Bouillo Nathalie
Kissel Jutta
Rieger Jens
BASF SE
Connolly Bove & Lodge & Hutz LLP
Le H. (Holly) T
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