Patent · US Expired

Means for the aftertreatment of permanently deformed hair

US4409204A · kind A · utility

9Cited by

0References

6Claims

0Family size

Assignee

Wella GmbH · DE

Inventors

Gunther Lang · Reinheim, DE
Theodor Wajaroff · Darmstadt, DE

Key dates

Filing date	Mar 19, 1980
Grant date	Oct 11, 1983
Priority date	—
Expiry date	Mar 19, 2000

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q5/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A process and composition for the aftertreatment of permanently deformed hair. Often the permanent deformation leaves reducing agent or oxidant in the hair, which leads to considerable damage to the hair. Applying to the hair a composition containing glyoxylic acid and at least one organic compound having a multiple carbon-carbon bond, containing a carboxyl group bonded to the multiple bond directly or through a methylene group, which is activated by at least one multiple CO or CN bond conjugated to that multiple bond, avoids the damage caused by permanent deformation.

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