Patent · US Expired

Agent and process for permanent hair wave based on mercaptoacetamides

US6153178A · kind A · utility

1Cited by

1References

6Claims

0Family size

Assignee

Wella GmbH · DE

Inventors

Guenther Lang · Reinheim, DE
Beate Dannecker · Darmstadt, DE
Wolfgang Hanefeld · Marburg, DE
Heiko Walther · Marburg, DE

Key dates

Filing date	Dec 19, 1997
Grant date	Nov 28, 2000
Priority date	—
Expiry date	Dec 19, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D295/185
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The aqueous composition for permanent hair-styling has a pH of from 6.5 to 9.5 and contains from 3 to 28% by weight of a compound of formula I, ##STR1## wherein A represents --CH.sub.2 --, --C.dbd.O--, --S--, --O-- and --NR-- and R is an alkyl group having from 1 to 6 carbon atoms or a hydroxyalkyl group having from 1 to 6 carbon atoms, m is an integer from 1 to 3 and n is an integer from 0 to 3, with the proviso that n=0 only when A is methylene; water and one or more cosmetic additive ingredient selected from the group consisting of thickening agents, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, opacifiers, alcohols, sugars, solubilizers, stabilizers, buffer substances, perfume oils, colorants, hair conditioning and hair treatment ingredients.

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