PHOTOPROTECTIVE COMPOSITIONS AND FILMS, AND A PREPARATION METHOD

• US 20120282310A1
• Filed: 10/21/2010
• Published: 11/08/2012
• Est. Priority Date: 10/22/2009
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: SIMONNET, Jean-Thierry, LION, Bertrand, LUCET-LEVANNIER, Karine
• Granted Patent: US 9,381,383 B2
• Time in Patent Office: Days
• US Class Current: 424/401
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/436 Interference pigments, e.g. Iridescent, Pearlescent
• CPC Class Codes: A61K 2800/437 Diffractive phenomena; Photonic arrays
• CPC Class Codes: A61K 2800/654 The particulate/core comprising macromolecular material
• CPC Class Codes: A61K 8/0266 Characterized by the sequence of layers
• CPC Class Codes: A61K 8/25 Silicon; Compounds thereof
• CPC Class Codes: A61K 8/90 Block copolymers A61K8/89 takes precedence
• CPC Class Codes: A61Q 17/04 Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• CPC Class Codes: G02B 5/28 Interference filters
• CPC Class Codes: G02B 5/283 designed for the ultraviolet
• CPC Class Codes: G02B 5/285 comprising deposited thin solid films G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361
• CPC Class Codes: G02B 5/286 having four or fewer layers, e.g. for achieving a colour effect
• CPC Class Codes: G02B 5/287 comprising at least one layer of organic material

Abstract

A photoprotective composition, in particular a cosmetic composition, that includes particles of photonic material having a polymeric multilayer interference structure, where at least two layers of the structure contain an amphiphilic polymer.

Claims

1-90. -90. (canceled)

91. A photoprotective cosmetic composition including particles having a polymeric multilayer interference structure, at least two layers of said structure comprising an amphiphilic polymer.

92. The composition according to claim 91, wherein the particles having a polymeric multilayer interference structure have a reflection spectrum including a reflection peak in a wavelength range of from 250 nm to 400 nm.

93. The composition according to claim 91, wherein the amphiphilic polymer includes a swelling agent.

94. The composition according to claim 91, comprising a fatty phase and an aqueous phase, the aqueous phase including the particles having a polymeric multilayer interference structure.

95. The composition according to claim 91, wherein the particles having a polymeric multilayer interference structure include a fixing agent selected from inorganic materials, glycols, and PEGs having a molecular weight in a range of from 400 g/mol to 50,000 g/mol.

96. The composition according to claim 91, including at least two different types of particles having a polymeric multilayer interference structure, each particle type having a different transmission spectrum in a wavelength range of from 250 nm to 400 nm.

97. The composition according to claim 91, wherein the amphiphilic polymer has a lamellar structure.

98. The composition according to claim 91, wherein the amphiphilic polymer comprises a block copolymer.

99. The composition according to claim 91, wherein the amphiphilic polymer comprises:

a diblock copolymer with the form A-B where A is a hydrophobic block and B is a;

hydrophilic and cationic block,

hydrophilic and anionic block, or

hydrophilic and non-ionic block;

or

a triblock copolymer with the form A-B-C where;

A and C are different hydrophobic blocks and B is a;

hydrophilic and cationic block,

hydrophilic and anionic block, or

hydrophilic and non-ionic block, or

B is a hydrophobic block, and A and C are different and selected from;

hydrophilic and cationic blocks,

hydrophilic and anionic blocks, or

hydrophilic and non-ionic blocks.

100. The composition according to claim 99, wherein the amphiphilic polymer comprises a diblock copolymer with the form A-B where A is polystyrene and B is poly(2-vinyl pyridine).

101. The composition according to claim 91, wherein the particles having a polymeric multilayer interference structure are plate-like.

102. The composition according to claim 91, wherein the particles having a polymeric multilayer interference structure include another optically active material.

103. The composition according to claim 93, wherein the swelling agent is selected from:

water and organic or inorganic saline solutions with a concentration in the range 0.01 M to 5 M;

the following compounds alone, as a mixture, or in aqueous solution;

glycerol, PEGs having a molecular weight in a range of from 400 g/mol to 50,000 g/mol, mono-, di-, and oligo-saccharides that are soluble in water at at least 1% by weight, sorbitol, propylene glycol, dipropylene glycol, butylene glycol, water-soluble polyols, and water-miscible lower alcohols;

neutralized or non-neutralized solutions of UV screens; and

polar oils, undecane, tridecane, and oily solutions of organic screens.

104. A method of preparing a cosmetic composition according to claim 93, comprising:

a) bringing a swelling agent into contact with a polymeric multilayer structure having at least two layers comprising an amphiphilic polymer;

b) fragmenting a film having a polymeric multilayer structure wherein at least two layers comprise an amphiphilic polymer into particles having a polymeric multilayer structure with a largest dimension of less than 100 μ

m and with a smallest dimension of 100 nm or more; and

c) dispersing the particles with the polymeric multilayer interference structure obtained after carrying out steps a) and b) in a cosmetically acceptable medium;

wherein step b) is carried out before or after step a).

105. A non-therapeutic method of photoprotecting human keratinous materials against solar UV radiation, the method comprising applying the cosmetic composition according to claim 91 to the human keratinous materials.

106. A cosmetic composition including particles of photonic material, comprising an amphiphilic polymer and producing a visible color.

107. A cosmetic composition including particles of photonic material, including a polymer having a fluorescent agent within it.

108. A photoprotective cosmetic composition, including particles of photonic material, comprising a polymer having a UV screen within it.