Patent · US Expired

Liquid concentrate for preserving cosmetics

US7537776B1 · kind B1 · utility

11Cited by

9References

15Claims

0Family size

Assignee

Air Liquide Santé (International) · FR

Inventors

Wolfgang Beilfuss · Hamburg, DE
Gisela Hahn · Alveslohe, DE
Klaus Weber · Hamburg, DE
Ralf Gradke · Tornesch, DE

Key dates

Filing date	Mar 27, 2000
Grant date	May 26, 2009
Priority date	—
Expiry date	Mar 27, 2020

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/524
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A liquid concentrate for preserving cosmetic products includes a combination of carboxylic acid salts chosen from the salts of benzoic acid, propionic acid, salicylic acid, sorbic acid, 4-hydroxybenzoic acid, dehydracetic acid, formic acid or 10-undecylenic acid and alcohols chosen from 2-phenozyethanol, benzyl alcohol, phenethyl alcohol, 1-phenoxypropan-2-ol, 3-(4-chlorophenoxy)-1,2-propanediol, chlorobutanol or 2,4-dichlorobenzyl alcohol in a solvent, where the active ingredient content is greater than 45% by weight.

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