Patent · US Expired

Dimeric .alpha.-alkylstyrene derivatives as photostable UV filters in cosmetic and pharmaceutical preparations

US6159455A · kind A · utility

39Cited by

6References

6Claims

0Family size

Assignee

BASF SE

Inventors

Thorsten Habeck · Meckenheim, DE
Frank Prechtl · Frankfurt, DE
Thomas Wunsch · Speyer, DE
Horst Westenfelder · Neustadt, DE

Key dates

Filing date	Dec 1, 1999
Grant date	Dec 12, 2000
Priority date	—
Expiry date	Dec 1, 2019

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/52
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to the use of substituted, dimeric .alpha.-alkylstyrene derivatives of the formula I ##STR1## in which the substituents are as defined in the description, as photostable UV filters in cosmetic and pharmaceutical preparations for protecting human skin or human hair against solar rays, alone or together with compounds which absorb in the UV region and which are known per se for cosmetic and pharmaceutical preparations.

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