Cosmetic compositions for application to the nail

• US 5,683,681 A
• Filed: 04/06/1995
• Issued: 11/04/1997
• Est. Priority Date: 04/07/1994
• Status: Expired due to Fees

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: Ramin, Roland, Mondet, Jean
• Primary Examiner(s): Page, Thurman K.
• Assistant Examiner(s): HOWARD, SHARON LEE
• Application Number:
  US08/417,674
• Time in Patent Office: 943 Days
• Field of Search: 424/61, 424/401, 514/951, 524/501
• US Class Current: 424/61
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61K 8/8147 Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
• CPC Class Codes: A61Q 3/02 Nail coatings

Abstract

A cosmetic composition for application to the nail, comprising an aqueous dispersion of polymers and a plasticizer. The composition may be used as a varnish or a base layer for a traditional varnish, and/or as a treatment base for the nail.

Claims

1. A cosmetic composition for application to the nail, comprising an aqueous dispersion of particles of at least one film-forming, radical-polymerization polymer and at least one plasticizer, wherein said at least one film-forming polymer contains carboxylic acid functions partially neutralized so that said at least one film-forming polymer is water insoluble but is soluble in an organic solvent.

2. A composition according to claim 1, wherein in said polymers corresponding to the formula ##STR3## v represents from 36 to 84% by weight, w represents from 6 to 12% by weight,

x represents from 6 to 40% by weight,

y represents from 4 to 30% by weight, and

v+w+x+y being equal to 100%.

3. A composition according to claim 1, wherein said at least one plasticizer is present in a proportion ranging from 5 to 40% by weight relative to the weight of dry matter of neutralized film-forming polymer.

4. A composition according to claim 1, wherein said aqueous dispersion additionally contains at least one active agent, said active agent being a vitamin keratin, a protein, a hydrolysate, chitosan, melanin, a trace element, collagen, glycerol, a phospholipid urea or formal.

5. A composition according to claim 1, wherein said aqueous dispersion additionally contains pigments.

6. A composition according to claim 1, which enables obtaining a film, after drying, with surface energy 30-55 mJ/m² and with polarity 0-0.34.

7. A composition according to claim 1, wherein said particles of said aqueous dispersion range in average size from 10 to 300 nm.

8. A composition according to claim 7, wherein said particles have an average size from 10 to less than 250 nm.

9. A composition according to claim 1, wherein the weight concentration of the film-forming polymer in the form of particles in dispersion ranges from 5 to 50% relative to the total weight of the dispersion.

10. A method for the treatment of the nails, which comprises applying a composition according to claim 1 to the nails, wherein said composition further comprises at least one active treatment agent.

11. A composition according to claim 1, wherein said at least one film forming polymer contains carboxylic acid functions neutralized by a monobasic neutralizing agent and further wherein said at least one film-forming polymer has a degree of neutralization ranging from 10 to 80%.

12. A composition according to claim 7, wherein said particles have a polydisperity ranging from 0.1 to 0.4.

13. A composition according to claim 12, wherein said particles have a polydisperity ranging from 0.1 to less than 0.35.

14. A cosmetic composition for application to the nail, comprising an aqueous dispersion of particles of at least one film-forming, radical-polymerization polymer and at least one plasticizer, wherein said at least one film-forming polymer contains carboxylic acid functions partially neutralized so that said at least one film-forming polymer is water insoluble but is soluble in an organic solvent and wherein said at least one film-forming polymer has an average molecular weight ranging from 5,000 to 700,000 and is selected from:

polyoxyethylenated vinyl acetate/crotonic acid copolymers;

vinyl acetate/crotonic acid (90;

10) copolymer;

vinyl acetate/crotonic acid/vinyl neodecanoate terpolymers;

N-octylacrylamide/methylmethacrylate/hydroxypropyl methacrylate/acrylic acid/tert-butylaminoethyl methacrylate copolymers;

methyl vinyl ether/maleic anhydride (50;

50) alternating copolymer monoesterified with butanol;

acrylic acid/ethyl acrylate/N-tertbutylacrylamide terpolymers; and

polymers corresponding to the following formula;

in which;

##STR4## R, R'"'"' and R", which may be identical or different, represent a hydrogen atom or a methyl radical;

m, n and t are equal to 1 or 2;

R₁ represents a saturated or unsaturated, linear or branched alkyl radical having from 2 to 21 carbon atoms;

z represents a bivalent radical selected from;

space="preserve" listing-type="equation">--CH.sub.2 --, --CH.sub.2 --O--CH.sub.2 -- and --CH.sub.2 --O--(CH.sub.2).sub.2 --;

Cyc represents a radical selected from;

##STR5## in which R₂ represents a hydrogen atom or a methyl radical;

R₃ represents a hydrogen atom or a methyl, ethyl, tert-butyl, ethoxy, butoxy or dodecyloxy radical;

R₄ represents a hydrogen atom, an alkyl radical having from 1 to 4 carbon atoms or an alkoxy radical having from 1 to 4 carbon atoms;

p is equal to 1 or 2;

v represents from 10 to 91% by weight,

w represents from 3 to 20% by weight,

x represents from 4 to 60% by weight,

y represents from 0 to 40% by weight, and

v+w+x+y being equal to 100%.