Patent Number: 6,166,119

Title: Flowability additive

Abstract: A cement pumpability-enhancing additive which confers good pumpability on cementitious compositions such as concrete consists essentially of(a) polyethylene glycol;(b) diethylene glycol monobutyl ether and/or a derivative thereof;(c) polysaccharide; and(d) a thickening polymer selected from the group consisting of polyacrylic acid derivatives, polyacrylic amide derivatives, cellulose ethers, polyphenyl ethers and polyalkylene glycol fatty acid esters;the weight solids proportions of (a), (b), (c), and (d) in the additive being respectively 5-55%, 10-80%, 1-20% and 1-20%. The additive is preferably used with a cement dispersing agent.

Inventors: Matsuo; Shigemi (Kanagawa-ken, JP), Nagamine; Hidenori (Kanagawa-ken, JP), Ota; Akira (Kanagawa-ken, JP)

Assignee: MBT Holding AG

International Classification: C04B 40/00 (20060101); C04B 24/00 (20060101); C04B 24/32 (20060101); C08K 005/06 (); C08L 001/20 (); C08L 001/28 (); C08L 005/00 ()

Expiration Date: 12/26/2013