Patent · US Expired

UV-protection formulation

US6235271A · kind A · utility

29Cited by

12References

24Claims

0Family size

Assignee

Ciba Specialty Chemicals Corporation · US

Inventors

Helmut Luther · Weil am Rhein, DE
Albert Stehlin · Rixheim, FR
Bernd Herzog · Weil am Rhein, DE

Key dates

Filing date	Jul 24, 1998
Grant date	May 22, 2001
Priority date	—
Expiry date	Jul 24, 2018

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/654
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention provides, as a first aspect, a sun protection agent, which is especially suitable for use in pharmaceutical or cosmetic applications, comprising PA0 a) a micronized organic UV absorber; and one, or preferably both of; PA0 b) an oil-soluble, non-micronized UV absorber and/or an inorganic micropigment; and PA0 c) a polymeric hollow sphere additive and/or a polymer selected from xanthan and/or polyvinylpyrrolidone. The present invention also provides a sunscreen composition comprising A) 0.1 to 15%, preferably 0.5 to 10% by weight, based on the total composition of a sun screen agent according to the present invention; and B) a cosmetically acceptable carrier.

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