UV-absorbing polymers and formulations thereof
View Patent ↗UV-absorbing polymers are provided that have at least one anhydride repeating unit that is covalently attached to at least one UV-absorbing moiety selected from the group consisting of functionalized dibenzoylmethanes, benzophenone sulfonamides, triphenyl triazines, and combinations thereof. Also provided are formulations comprising the UV-absorbing polymers.
1. A polymer comprising: a first repeating unit selected from the group consisting of:
and combinations thereof, and wherein
each Z is a residue of a monomer independently selected from the group consisting of functionalized and unfunctionalized: alpha-olefins is selected from the group consisting of: isobutylene, octadecene, and combinations thereof;
each X is independently selected from the group consisting of O, NR 1 , and combinations thereof;
each R 1 and R 2 is independently selected from the group consisting of hydrogen, halogen, and functionalized and unfunctionalized hydrocarbyl optionally having one or more heteroatoms;
each R 3 is independently selected from the group consisting of hydrogen, U, and functionalized and unfunctionalized hydrocarbyl optionally having one or more heteroatoms;
each M is independently selected from the group consisting of alkali metal ion, alkaline earth metal ion, ammonium ion, and combinations thereof;
each U has a structure independently selected from the group consisting of:
and combinations thereof, wherein each R 31 , R 32 , R 33 , R 34 , R 35 , R 41 , R 42 , R 43 , R 44 and R 45 is independently selected from the group consisting of hydrogen, halogen, amino, alkyl amino, hydroxyl, alkoxyl, sulfonyl, carboxyl, functionalized and unfunctionalized hydrocarbyl optionally having one or more heteroatoms, and combinations thereof;
each Y is independently selected from the group consisting of O, NR 1 , S, and combinations thereof;
each Q is independently selected from the group consisting of functionalized and unfunctionalized hydrocarbylene optionally having one or more heteroatoms; and
each (wavy bond) indicates the point of attachment for each said U.
2. The polymer according to claim 1 wherein each said U has a structure independently selected from the group consisting of:
and combinations thereof, wherein each (wavy bond) indicates the point of attachment for each said U.
3. The polymer according to claim 1 having a structure selected from the group consisting of:
wherein b, c, d, e, f, g, and h are mole fractions such that sum of said mole fractions for each said polymer equals to 1.0.