C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/56.3
C04B 24/12 (2006.01) C04B 24/28 (2006.01)
Patent
CA 1247152
ABSTRACT A concrete additive comprises polyethyleneimine compounds selected from the group consisting of (1) poly[acidic group(s) and/or acidic group(s) substituted-alkyl group(s) and/or acidic group(s) substituted-acyl group(s)]polyethyleneimine and (2) poly [acidic group(s) substituted-alkyl and a group selected from the group consisting of carbamoylalkyl and hydroxy substituted-alkyl] polyethyleneimine; the additive improves the flow properties of cement compositions and in particular facilitates high flow rates during pumping.
490286
Adachi Toshikazu
Kawada Kazushige
Sugita Shinichi
Takeuchi Toru
Teraji Tsutomu
Fujisawa Pharmaceutical Co. Ltd.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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