C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/02 (2006.01) C08F 216/14 (2006.01) C08F 222/00 (2006.01) C08F 224/00 (2006.01)
Patent
CA 2375597
Copolymers based on unsaturated monocarboxylic or dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers, vinylic polyalkylene glycol, polysiloxane or ester compounds and the use thereof as additives for aqueous suspensions based on mineral or bituminous binders are described. The copolymers give aqueous suspensions of building materials excellent processing properties even in very small amounts, without delaying strength developments. In addition, when the copolymers of the invention are used, a drastic decrease in the water/binder ratio still leads to highly fluid building materials without segregation of individual constituents from the building material mixture occurring.
L'invention concerne des copolymères à base de dérivés d'acide monocarboxylique ou dicarboxylique insaturés, d'alcényléthers d'oxyalkylèneglycol, de composés de polyalkylèneglycol, de polysiloxane ou d'ester vinyliques, ainsi que leur utilisation comme additif pour suspensions aqueuses à base de liants minéraux ou bitumineux. Ces copolymères confèrent aux suspensions aqueuses de matériaux de construction d'excellentes propriétés de mise en oeuvre, même faiblement dosés, sans ralentir le développement de la rigidité. En outre, une diminution extrême de la proportion eau/liant au moyen des copolymères de l'invention permet d'obtenir des matériaux de construction très coulants, sans provoquer une ségrégation des constituants individuels du mélange de matériaux de construction.
Albrecht Gerhard
Grassl Harald
Hubsch Christian
Kern Alfred
Leitner Hubert
Construction Research & Technology Gmbh
Degussa Construction Chemicals Gmbh
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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