Patent ID: 7550419

Claim:
An oral care composition, comprising: (a) from about 10% to about 99% of at least one ingredient selected from the group consisting of a polishing agent (abrasive agent), sudsing agents (surfactants), a binder, a humectant, a medicinal agent, peroxide sources, alkali metal bicarbonate salts, thickening materials, titanium dioxide, flavor agents, sweetening agents, xylitol, coloring agents, water and mixtures thereof wherein the composition must contain at least one additive selected from the group consisting of a polishing agent (abrasive agent), sweetening agent, xylitol, flavor agent, anti-calculus agent, anti-caries agent and mixtures thereof, and (b) an effective amount of an anti-stain agent comprising: (b)(I)(1) organophosphorus compounds according to structure (I): wherein: each R 1 is and each R 2 is independently absent or O, provided that at least one of R 1 and R 2 is O, each R 3 is independently alkyleneoxy, poly(alkyleneoxy), which may optionally, be substituted on one or more carbon atom of such alkyleneoxy, or poly(alkyleneoxy) group by hydroxyl, alkyl , hydroxyalkyl, alkoxy, alkenyl, aryl, or aryloxy, R 5 is and each R 4 is independently absent or alkyleneoxy, poly(alkyleneoxy), which may optionally, be substituted on one or more carbon atom of such alkyleneoxy, or poly(alkyleneoxy) group by hydroxyl, alkyl, hydroxyalkyl, alkoxy, alkenyl, aryl, or aryloxy, R 6 and R 8 are each and each R 7 is independently H, or (C 1 -C 30 )hydrocarbon, which hydrocarbon may optionally be substituted on one or more carbon atoms by hydroxyl, fluorine, alkyl, alkenyl or aryl and/or interrupted at one or more sites by an O, N, or S heteroatom, or —POR 9 R 10 , R 9 and R 10 are each independently hydroxyl, alkoxy, aryloxy, or (C 1 -C 30 )hydrocarbon, which hydrocarbon may optionally be substituted on one or more carbon atoms by hydroxyl, fluorine, alkyl, alkenyl or aryl and/or interrupted at one or more sites by an O, N, or S heteroatom, and m is an integer of from 1 to 5, (b)(I)(2) salts of organophosphorus compounds according to structure (I), (b)(I)(3) condensation reaction products of two or more molecules of one or more organophosphorus compounds according to structure (I), and (b)(I)(4) mixtures comprising two or more of the compounds, salts, and/or reaction products of (b)(I)(1), (b)(I)(2), and (b)(I)(3), wherein the anti-stain agent further comprises a vinyl alcohol material selected from: (b)(II)(1) polymers comprising monomeric units according to structure (I-a): (b)(II)(2) salts of polymers (b)(II)(1), (b)(II)(3) reaction products of two or more molecules of one or more polymers (b)(II)(1).