Patent · US Expired

Propellantless pump sprays and pump foams containing an anionic copolymer of methacrylic acid and ethyl acrylate

US6482394B1 · kind B1 · utility

29Cited by

3References

4Claims

0Family size

Assignee

BASF SE

Inventors

Volker Schehlmann · Schifferstadt, DE
Peter Hossel · Schifferstadt, DE

Key dates

Filing date	Apr 27, 2000
Grant date	Nov 19, 2002
Priority date	—
Expiry date	Apr 27, 2020

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/594
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Hair treatment compositions in the form of pump sprays and pump foams that are free from propellant gases comprise at least one cationic and at least one anionic polymer having methacrylic and ethyl units.

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