Inorganic powder composition containing polymeric auxiliaries and use thereof

US5643996A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Jürgen Friederich Rudolph · Monsheim, DE
• Wolfgang Meyer · Rorschach, CH
• Gerhard Wegner · Mainz, DE
• Friedrich Hessel · Mainz, DE
• Katharina Seitz · Frankfurt, DE
• Andreas Roosen · Hofheim, DE

Key dates

• Filing date: Mar 18, 1996
• Grant date: Jul 1, 1997
• Expiry date: Mar 18, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L53/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A composition of inorganic powders comprises inorganic powder, dispersant and binder. The dispersant and/or binder used is a block copolymer of the units methacrylic acid and alkyl methacrylate in which the alkyl radical can comprise from 1 to 8 carbon atoms. The individual blocks of alkyl methacrylate possess an average molecular weight of at least 4000 and the total block copolymer has an average molecular weight of up to 150,000, in each case expressed as number average (M.sub.n).