Patent · US Expired

Sunblocking polymers and their formulation

US5741924A · kind A · utility

26Cited by
12References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 14, 1995
Grant dateApr 21, 1998
Priority date
Expiry dateJun 14, 2015

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61K2800/57
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Novel polymeric compositions and their intermediates are provided, providing for broad range protection from ultraviolet radiation. Acryl polymers comprising at least two different ultraviolet absorbing moieties having different light absorbing ranges are employed in conjunction with another hydrophilic monomer to provide sunscreen formulations for invisibility, and enhanced protection, without deleterious effects in the dermis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.