Patent · US Expired

Acrylate dispersion and its use for thickening hydrogen peroxide preparations

US4685931A · kind A · utility

20Cited by

10References

24Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Ludwig Schieferstein · Ratingen, DE
Detlef Hollenberg · Hilden, DE
Norbert Maak · Neuss, DE

Key dates

Filing date	Dec 13, 1985
Grant date	Aug 11, 1987
Priority date	—
Expiry date	Dec 13, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F220/1802
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

An aqueous dispersion of a copolymer of PA0 from about 50 to 60% by weight ethyl acrylate PA0 from about 30 to 40% by weight methacrylic acid PA0 from about 5 to 15% by weight acrylic acid and PA0 from about 0.02 to 0.04% by weight of a polyethylenically copolymerizable monomer, for example ethylene glycol dimethacrylate. The dispersion is suitable as an additive for aqueous, mildly acidic preparations of hydrogen peroxide to impart an increased viscosity to them after neutralization. The hydrogen peroxide preparations in question are particularly suitable for use as a developer composition for oxidative hair dyes and hair bleaches.

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