Photostable compositions comprising para-alkoxyl phenyl substituted propenoic acid (APP) copolymer derivatives
AssigneeHallstar Beauty and Personal Care Innovations Company
InventorsHui Feng, Shengkui Hu, Dennis Zlotnik
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Abstract
The present disclosure relates, according to some embodiments, to photostable photoactive compositions comprising (a) at least one photoactive compound that develops within itself an excited state energy when subjected to UV radiation and (b) a block copolymer comprising a plurality of blocks, wherein the block copolymer is operable to quench the excited state energy.
Claims23
A photostable photoactive composition comprising:
- (a) at least one photoactive compound that develops within itself an excited state energy when subjected to UV radiation, and
- (b) a block copolymer comprising a plurality of blocks, and having a structure according to Formula I:
- H3C—V—W—X—Y—Z—CH3,
- wherein the plurality of blocks comprises:
- at least one block has a structure according to Formula III:
- wherein:
- R5 is C1-C30 alkyl;
- R6 is selected from the group consisting of H and C1-C15 alkyl;
- L is C1-C15 alkyl;
- D is selected from the group consisting of O and S;
- C is selected from the group consisting of CN and (C═O)NR7(R8);
- and
- each stereoisomer is selected from the group consisting of E, Z, R, S, and a combination thereof;
- wherein R7 and R8 are independently C1-C15 alkyl;
- wherein o is a number from 1 to 5,000;
- wherein p is a number from 0 to 20;
- wherein R5, R6, R7 and R8 may be either straight chain or branched chain,
- wherein the block copolymer is operable to quench the excited state energy.
A method of photostabilizing a photoactive composition containing a block copolymer and at least one photoactive compound, the method comprising:
- (a) adding the at least one photoactive compound in an effective amount to the composition,
- wherein the at one photoactive compounds develops within itself an excited state energy when subjected to UV radiation;
- and
- (b) adding the block copolymer in an effective amount to the composition,
- wherein the block copolymer comprises a plurality of blocks, and
- has a structure according to Formula I:
- H3C—V—W—X—Y—Z—CH3,
- wherein the plurality of blocks comprises:
- at least one block has a structure according to Formula III:
- wherein:
- R5 is C1-C30 alkyl;
- R6 is selected from the group consisting of H and C1-C15 alkyl;
- L is C1-C15 alkyl;
- D is selected from the group consisting of O and S;
- C is selected from the group consisting of CN and (C═O)NR7(R8);
- and
- each stereoisomer is selected from the group consisting of E, Z, R, S, and a combination thereof;
- wherein R7 and R8 are independently C1-C15 alkyl;
- wherein o is a number from 1 to 5,000;
- wherein p is a number from 0 to 20;
- wherein R5, R6, R7 and R8 may be either straight chain or branched chain, and
- wherein the block copolymer is operable to quench the excited state energy.
A cosmetic or dermatological composition for coating a skin to protect the skin from oxidative stress caused by absorption of light having a wavelength in the wavelength range of about 280 nm to about 400 nm, the composition comprising:
- (a) at least one photoactive compound that develops within itself an excited state energy when subjected to UV radiation,
- (b) a block copolymer comprising a plurality of blocks,
- having a structure according to Formula I:
- H3C—V—W—X—Y—Z—CH3,
- wherein the plurality of blocks comprises:
- at least one block has a structure according to Formula III:
- wherein:
- R5 is C1-C30 alkyl;
- R6 is selected from the group consisting of H and C1-C15 alkyl;
- L is C1-C15 alkyl;
- D is selected from the group consisting of O and S;
- C is selected from the group consisting of CN and (C═O)NR7(R8);
- and
- each stereoisomer is selected from the group consisting of E, Z, R, S, and a combination thereof;
- wherein R7 and R8 are independently C1-C15 alkyl;
- wherein o is a number from 1 to 5,000;
- wherein p is a number from 0 to 20;
- wherein R5, R6, R7 and R8 may be either straight chain or branched chain, and
- wherein the block copolymer is operable to quench the excited state energy.
Dependencies are inferred from the claim text.