Oral care compositions comprising phosphono-phosphate and anionic group containing polymers

An oral care composition comprising a polymer comprising a phosphono-phosphate group and an anionic group wherein said phosphono-phosphate group has the structure of Formula 1:

• wherein:
• ε is the site of attachment to a carbon atom in the polymer backbone, side group, or side chain;
• R1 is selected from the group consisting of —H, alkyl, alkanediyl-alkoxy, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, amine cation salt, and a structure of Formula 2:
• wherein:
• θ is the site of attachment to Formula 1,
• R4 and R5 are independently selected from the group consisting of —H, alkyl, alkanediyl-alkoxy, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt;
• R2 is selected from the group consisting of —H, alkyl, alkanediyl-alkoxy, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, amine cation salt, and a structure of Formula 3:
• wherein:
• θ is the site of attachment to Formula 1,
• R6, and R7 are independently selected from the group consisting of —H, alkyl, alkanediyl-alkoxy, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt, and
• n is an integer from 1 to 22;
• and
• R3 is selected from the group consisting of —H, alkyl, alkanediyl-alkoxy, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt,
• wherein said anionic group is covalently bound to the polymer backbone, side group, or side chain and is selected from the chemical group consisting of phosphate, phosphonate, phosphinate, sulfate, sulfonate, sulfinate, mercapto, carboxylate, hydroxyamino, amine oxide, and hydroxamate.