Fast curing cosmetic compositions for tack free surface photocuring of radically polymerizable resins with UV-LED
AssigneeL'oreal
InventorsXianZhi Zhou, Chunhua Li, Hy Si Bui, Jean-Thierry Simonnet
Life of this patent
Estimating the term…
Abstract
Disclosed herein are cosmetic compositions comprising (a) at least one ethylenically unsaturated polymerizable compound and (b) at least one photoinitiator system comprising at least one photoinitiator having at least one absorption wavelength greater than about 350 nm. Also disclosed herein are methods of making up and/or enhancing the appearance of a keratinous substrate comprising (1) forming at least one film on the keratinous substrate by applying said cosmetic composition to the keratinous substrate and (2) exposing the film to UV-LED radiation.
Claims21
A cosmetic composition comprising:
- (a) at least one ethylenically unsaturated polymerizable compound, and
- (b) at least one photoinitiator system comprising at least two photoinitiators,
- wherein at least one first photoinitiator has at least one absorption wavelength greater than about 350 nm,
- wherein at least one second photoinitiator does not have an absorption wavelength greater than about 350 nm,
- wherein the at least one first photoinitiator is present in an amount ranging from about 1% to about 7% by weight, relative to the total weight of the composition, and
- wherein the total amount of photoinitiators having at least one absorption wavelength greater than about 350 nm is greater than about 60% by weight, relative to the total weight of the photoinitiator system.
A method of treating, making up, and/or enhancing the appearance of a keratinous substrate comprising:
- (1) forming a film on the keratinous substrate by applying to said keratinous substrate a composition comprising:
- (a) at least one ethylenically unsaturated polymerizable compound, and
- (b) at least one photoinitiator system comprising at least two photoinitiators,
- wherein at least one first photoinitiator has at least one absorption wavelength greater than about 350 nm,
- wherein at least one second photoinitiator does not have an absorption wavelength greater than about 350 nm,
- wherein the at least one first photoinitiator is present in an amount ranging from about 1% to about 7% by weight, relative to the total weight of the composition, and
- wherein the total amount of photoinitiators having at least one absorption wavelength greater than about 350 nm is greater than about 60% by weight, relative to the total weight of the photoinitiator system, and
- (2) exposing the film to UV-LED radiation.
A process for forming a photo-curable film on a keratinous substrate, said process comprising applying to the keratinous substrate a composition comprising:
- (a) at least one ethylenically unsaturated polymerizable compound, and
- (b) at least one photoinitiator system comprising at least two photoinitiators,
- wherein at least one first photoinitiator has at least one absorption wavelength greater than about 350 nm,
- wherein at least one second photoinitiator does not have an absorption wavelength greater than about 350 nm,
- wherein the at least one first photoinitiator is present in an amount ranging from about 1% to about 7% by weight, relative to the total weight of the composition, and
- wherein the total amount of photoinitiators having at least one absorption wavelength greater than about 350 nm is greater than about 60% by weight, relative to the total weight of the photoinitiator system.
Dependencies are inferred from the claim text.