Cosmetic nanocomposites based on in-situ cross-linked POSS materials
View Patent ↗A cosmetic composition for caring for and/or making up the skin, lips and/or body in the form of a film, which is non-transferable, long-lasting with a comfortable feeling of use to consumers over long periods of wear time. The composition contains graftable POSS which forms a film when it cures in situ. The invention also relates to using such film for preparing a cosmetic composition and a makeup process and makeup kit comprising the product.
1. A composition for application to mammalian keratinous material able to crosslink in-situ while leaving a film on said mammalian keratinous material, said composition comprising: a first part composition of a polymer and a cross-linking agent, and a second part composition of graftable particle dispersed in a cosmetic matrix, wherein the graftable particle comprises polyhedral oligomeric silsequioxanes (“POSS”) having a molecular formula RSiO 1.5 in an amount from about 0.001% to about 50% by weight of the composition.
2. The composition of claim 1 , wherein the cross-linking agent is a catalyst comprising from about 1×10 −7 to about 1×10 −3 parts by weight per 100 parts by weight of the graftable POSS and is selected from the group consisting of a hydrosilylation catalyst and a condensation catalyst.
3. The composition of claim 1 , wherein the polymer is nonfunctionalized and the graftable POSS undergoes self cross-linking.
4. The composition of claim 3 , where the nonfunctionalized polymer is polydimethyl siloxane (“PDMS”) having a viscosity ranging from about 10,000 cSt to about 3,000,000 cSt.
5. The composition of claim 1 , wherein the polymer is functionalized with a group selected from vinyl, Si—H, —OH, —OCH3, and —CN and undergoes cross-linking with the graftable POSS.
6. The composition of claim 1 , wherein the polymer is present in amounts ranging from about 0.05% to about 50% by weight of the composition.
7. The composition of claim 1 further comprising at least one additional ingredient selected from the group consisting of cosmetic, personal care, dermatological and pharmaceutical active agents.
8. The composition of claim 1 , wherein said composition is in the form of a foundation, makeup, lip make-up, eyeliner, insect repellant, mascara, skin lotion, cream, sunscreen composition, skin or hair cleaning shampoo, or conditioner.
9. The composition according to claim 1 , wherein the composition is a lip make-up.
10. The composition of claim 1 , having a form selected from a liquid, solid, cream, ointment, solution, gel, film, mousse, stick, cream, spray, powder, emulsion, and dispersion.