C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 222/10 (2006.01) C04B 24/24 (2006.01) C08F 222/36 (2006.01) C08F 222/40 (2006.01) C08F 230/02 (2006.01)
Patent
CA 2608374
The invention relates to copolymers based on phosphorous-containing monomers (A) and on macromonomers (B), to methods for the production thereof and to their use as additives for inorganic binding agent suspensions based on cement, lime, gypsum and anhydrite. The corresponding polymeric additives have, as flow agents, excellent water-reducing properties and hold the flowability of the concrete over a relatively long period of time (60 to 90 min.) to an almost unchanged level without having delayed action. In addition, the corresponding polymeric additives improve the processing and setting processes of the building materials produced with these additives by making possible earlier and higher resistances to pressure.
L'invention concerne des copolymères à base de monomères (A) contenant du phosphore et de macromonomères (B) contenant du phosphore, ainsi que des procédés de production et leur utilisation en tant qu'additifs pour des suspensions de liants inorganiques à base de ciment, de chaux, de plâtre et d'anhydrite. Ces additifs polymères présentent, en tant que solvants, d'excellentes propriétés de réducteurs d'eau et ils maintiennent la fluidité du béton à un niveau pratiquement identique sur une durée relativement longue (60 - 90 min.), sans effet retardateur. Lesdits additifs polymères améliorent en outre les processus de transformation et de durcissement des matériaux de construction réalisés au moyen de ces additifs en leur conférant une résistance à la compression plus rapide et plus élevée.
Albrecht Gerhard
Brandl Martina
Einfeldt Lars
Hartl Angelika
Kraus Alexander
Construction Research & Technology Gmbh
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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