Use of nonionic cellulose ethers in jointing and coating compounds based on aqueous polymer dispersions

US5134180A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Helmut Loth · Essen, DE
• Klaus Helpenstein · Rheydt, DE
• Tore Podola · Monheim, DE
• Bernhard Knop · Monheim, DE

Key dates

• Filing date: Oct 19, 1990
• Grant date: Jul 28, 1992
• Expiry date: Oct 19, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2200/0685
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Joint-sealing and coating compounds containing aqueous dispersions of polymers and copolymers, except for polyacrylates and acrylate copolymers, plasticizers and typical additives, such as pigments and the like, show excellent properties, particularly in regard to spreadability, smoothing behavior and resistance to spray water of uncured surfaces of these compounds providing they contain nonionic cellulose ethers selected from the group consisting of hydroxyethyl, hydorxyethyl-methyl, hydroxypropyl-methyl and hydroxypropyl cellulose having a Brookfield viscosity (2% aqueous solution at 20.degree. C.) of at least 3,000 mPa.s.