Photostable compositions comprising para-alkoxyl phenyl substituted propenoic acid (app) derivatives
AssigneeHallstar Innovations Corp.
InventorsHui Feng, Shengkui Hu
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Abstract
The present disclosure relates, according to some embodiments, to photostable UV absorbing compositions comprising para-alkoxyl phenyl substituted propenoic acid (APP) derivatives. Furthermore, the present disclosure relates to methods of prolonging the UV absorption capabilities of a composition using photostable UV absorbing compositions comprising APP derivatives.
Claims32
A photostabilized photoactive composition comprising:
- at least one photoactive compound that develops an excited state energy when subjected to UV radiation;
- and
- at least one para-alkoxyl phenyl substituted propenoic acid derivative of Formula I:
- wherein:
- R is selected from the group consisting of C1-C30 alkyl;
- R1 is selected from the group consisting of C1-C15 alkoxyl, OH, and H;
- R2 is selected from the group consisting of H and C1-C15 alkoxyl;
- R3 is selected from the group consisting of C1-C40 alkyl;
- K is selected from the group consisting of C1-C15 alkyl;
- B is selected from the group consisting of O or S;
- and
- A is selected from the group consisting of CN or (C═O)NR4(R5),
- wherein R4 and R5 are independently selected from C1-C15 alkyl;
- wherein R, R1, R2, R3, R4, and R5 may be either straight chain or branched chain;
- wherein the at least one para-alkoxy phenyl substituted propenoic acid derivative of Formula I comprises the Z stereoisomer, the E stereoisomer, or a combination thereof;
- and
- wherein the at least one para-alkoxyl phenyl substituted propenoic acid derivative of Formula I is operable to quench the excited state energy.
A method of prolonging UV absorption capabilities of a composition containing at least one photoactive compound and at least one para-alkoxyl phenyl substituted propenoic acid derivative, the method comprising:
- adding the at least one para-alkoxyl phenyl substituted propenoic acid derivative of Formula I in an effective amount to the composition,
- wherein the at least one para-alkoxyl phenyl substituted propenoic acid derivative of Formula I comprises:
- wherein:
- R is selected from the group consisting of C1-C30 alkyl;
- R1 is selected from the group consisting of C1-C15 alkoxyl, OH, and H;
- R2 is selected from the group consisting of H and C1-C15 alkoxyl;
- R3 is selected from the group consisting of C1-C40 alkyl;
- K is selected from the group consisting of C1-C15 alkyl;
- B is selected from the group consisting of O or S;
- and
- A is selected from the group consisting of CN or (C═O)NR4(R5),
- wherein R4 and R5 are independently selected from C1-C15 alkyl;
- wherein R, R1, R2, R3, R4, and R5 may be either straight chain or branched chain;
- wherein the at least one photoactive compound absorbs UV radiation and thereby protects a substrate from UV radiation;
- wherein the at least one para-alkoxy phenyl substituted propenoic acid derivative of Formula I comprises the Z stereoisomer, the E stereoisomer, or a combination thereof;
- and
- wherein the at least one para-alkoxyl phenyl substituted propenoic acid of Formula I is operable as an excited state energy acceptor.
Dependencies are inferred from the claim text.