Acoustically-activated cosmetic hydrogels

Patent metadata

Field	Value
Publication number	US-10058490-B2
Application number	US-201414582816-A
Country	US
Kind code	B2
Filing date	Dec 24, 2014
Priority date	Dec 24, 2014
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A composition that includes an activatable aggregate is described herein. The aggregate has a core and a shell. In some embodiments, when the aggregate is exposed to acoustic energy, the core of the aggregate includes a hydrogel that is capable of absorbing a relatively large amount of water. The core of the aggregate is covalently bound to a shell of linear aliphatic moieties. The aggregate is synthesized to minimize the amount of water in the core, prior to exposure to acoustic energy. Methods of hydrating using the compositions are also provided.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A composition, comprising:
an aggregate including a core and a shell;
the core consisting of a hydroxyethylcellulose; and
the shell having a C 4-24 alkyl covalently bonded to the hydroxyethylcellulose of the core.

2. The composition of claim 1 , wherein the C 4-24 alkyl is covalently bonded to the hydroxyethylcellulose via a linkage selected from carbamate linkage, an ester linkage, an ether linkage, and an amide linkage.

3. The composition of claim 1 , further including a colorant selected from titanium oxide and iron oxide.

4. The composition of claim 1 , further including a lipophilic carrier.

5. The composition of claim 1 , wherein the aggregate is a reverse micelle.

Assignees

• Oreal

Inventors

• Casasanta Iii Vincenzo
• Carlson William Brenden
• Phelan Gregory David

Classifications

• A61K8/44 Primary

  Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof · CPC title

• A61K8/0241

  Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes) · CPC title

• A61K8/29

  Titanium; Compounds thereof · CPC title

• A61K8/731 Primary

  Cellulose; Quaternized cellulose derivatives · CPC title

• A61N7/00

  Ultrasound therapy (lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 {; using ultrasound for introducing media into the body A61M37/0092}) · CPC title