Redispersible powders comprising pozzolanic components

US7388047B2 · kind B2 · utility

Assignee

• WACKER POLYMER SYSTEMS GMBH & CO. KG · DE

Inventors

• Hans-Peter Weitzel · Reischach, DE
• Hermann Lutz · Emmerting, DE
• Peter Fritze · Haiming, DE
• Stefan Killat · Burghausen, DE

Key dates

• Filing date: Jun 22, 2004
• Grant date: Jun 17, 2008
• Expiry date: Nov 6, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/00637
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Water-redispersible polymer powder compositions based on homopolymers or copolymers of one or more monomers from the group consisting of vinyl esters of unbranched or branched alkylcarboxylic acids having from 1 to 15 carbon atoms, methacrylic esters and acrylic esters of alcohols having from 1 to 15 carbon atoms, vinylaromatics, olefins, dienes and vinyl halides, one or more protective colloids, if desired antiblocking agents, contain one or more compounds from the group of pozzolanas. The pozzolanic compounds preferably take the place of anti-blocking agents conventionally used.