公开(公告)号：US20240000692A1

公开(公告)日：2024-01-04

申请号：US18087891

申请日：2022-12-23

Applicant: Tata Consultancy Services Limited

Inventor： Auhin Kumar MAPARU ,  Ashish MASARKAR ,  Beena RAI

IPC: A61K8/73 ,  A61Q17/04

CPC classification number: A61K8/736 ,  B82Y30/00 ,  A61Q17/04

Abstract: Nanomaterials are an important class of materials for sunscreens. Conventional metal oxide nanoparticles are toxic in nature and leave white patches on skin after application. This disclosure provides a sunscreen composition containing biodegradable antimicrobial polymer nanoparticles as UV filter. The sunscreen composition comprising chitosan nanoparticles, at least one flavoring agent, at least one coloring agent, at least one stabilizer, and at least one preservative, in a defined form, wherein size of the chitosan nanoparticles is ranging from 200 to 900 nm. The size of the chitosan nanoparticles ranging from 200 to 400 nm for air medium, 500 to 700 nm for water medium and 700 to 900 nm for ethanol medium. The chitosan polymer is derived from chitin, a glucosamine polymer. The sunscreen composition is available in the defined form selected from a group consisting of a skin cream, a skin lotion, a powder, a gel, and a sprayable liquid.