C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 24/26 (2006.01) C04B 24/32 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01) C08F 220/06 (2006.01) C08F 220/28 (2006.01)
Patent
CA 2340515
A multipurpose cement dispersing, shrinkage compensating and anticorrosive polymer and an admixture comprising said polymer, which improve the workability and the early strength development of fresh concrete, are described. Said polymer is an ester- and amid group-modified acrylic polymer, obtainable by aqueous solution radical copolymerization of (1) acrylic or methacrylic acid with (2) an acrylic or methacrylic methoxy-polyalkyleneglycolester monomer having 2 to 300 moles of an oxyalkylene group each having 2 to 3 carbon atoms, (3) optionally an acrylic or methacrylic methoxy- polyalkyleneglycolamide monomer having 2 to 300 moles of an oxyalkylene group each having 2 to 3 carbon atoms, (4) an acrylic or methacrylic ester of a tertiary aminoalkanol and (5) optionally an acrylic amide of a primary or secondary aliphatic, cycloaliphatic or aromatic amine.
Burge Theodor A.
Schober Irene
Sulser Ueli
Velten Ulf
Widmer Jurg
Osler Hoskin & Harcourt Llp
Sika Ag Vorm. Kaspar Winkler & Co.
Sika Technology Ag
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