Copolymers based on unsaturated dicarboxylic acid derivatives and oxyalkylene glycol alkenyl ethers

US6211317A · kind A · utility

Assignee

• SWK Bauchemie GmbH · DE

Inventors

• Gerhard Albrecht · Prien am Chiemsee, DE
• Hubert Leitner · Traunwalchen, DE
• Josef Weichmann · Pleiskirchen, DE
• Alfred Kern · Schneeberg, DE

Key dates

• Filing date: Jul 30, 1998
• Grant date: Apr 3, 2001
• Expiry date: Jul 30, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/30
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Copolymers based on unsaturated dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers, unsaturated dicarboximides and/or -amides and vinyl monomers are described, as also their use as additives for hydraulic binders, especially cement. The copolymers also have an excellent plasticizing effect--even if they are added in large quantities--when used in concrete mixtures with an extremely low water content, and they do not retard the setting process.