Title:
局所的に施される活性剤用の化粧品粒状ゲル担体
Document Type and Number:
Japanese Patent JP3972372
Kind Code:
B2
Abstract:
A protective cosmetic particulate gel delivery system for a topically applied active agent employs an agar gel and a restraining polymer to retain the actve agent in the gel. The particles have an average particle diameter of at least 0.05 mm while the restraining polymer has a molecular weight of at least 50,000 daltons and has retention groups to bind the active agent. The restraining polymers can be selected from the group consisting of polyquaternium 24, laurdimonium hydroxyethylcellulose, cocodimonium hydroxyethylcellulose, steardimonium hydroxyethylcellulose, quaternary ammonium substituted water-soluble polysaccharides, alleyl quaternary celluloses and polypeptides having or provided with retention groups to retain the active agent. The gel particles of the invention are manually crushable on the skin to increase the surface area of the gel particle material and expose the restraining polymer to the skin or other body surface for release of the active agent. The delivery system can be incorporated in multiphase cosmetic formulations such as gels, creams and lotions.
Inventors:
Del Rio, Pascal
Ding, Li
Ding, Li
Application Number:
JP54787798A
Publication Date:
September 05, 2007
Filing Date:
May 01, 1998
Export Citation:
Assignee:
Kobo Products, Inc.
International Classes:
A61K8/02; A61K8/73; A61K8/00; A61K8/04; A61K8/11; A61K8/29; A61K8/33; A61K8/36; A61K8/49; A61K8/64; A61K8/65; A61K8/66; A61P17/16; A61Q1/00; A61Q1/04; A61Q1/10; A61Q1/12; A61Q17/04; A61Q19/00
Domestic Patent References:
| JP5049911A |
Foreign References:
| WO1995030411A1 |
Attorney, Agent or Firm:
Takahisa Kimura