Patent ID: 8481116

Claim:
A method for producing a coated basic material for a hydraulic composition, the basic material comprising at least one hydraulic binding agent and particles belonging to at least one of a plurality of subgroups, the method comprising: at least partially coating the basic material with a concrete fluidizer without previously or simultaneously mixing the basic material with water in a hydraulic composition, and at least partially coating the basic material with an additive selected from the group consisting of a flow agent, a retardant, an accelerant, a stabilizer, an aerant, a sealant, and a corrosion inhibitor, wherein the concrete fluidizer is a polycarboxylate having a structural formula A wherein: M=hydrogen, an alkali metal ion, an alkaline earth metal ion, a two or three valence electron metal ion, an ammonia ion, an organic ammonia group or a mixture thereof, R=each R is methyl-, R 1 R 2 =C 1 to C 20 alkyl, cycloalkyl, or alkyl aryl, —[AO]n—R4, wherein A=C 2 to C 4 , alkylene, R4=C 1 to C 20 alkyl, cyclohexyl, or alkyl aryl, and n=2-250, R 3 =—NH 2 , —NR 5 R 6 , or —OR 7 NR 8 R 9 , wherein R 5 and R 6 independently of each other are each a C 1 to C 20 alkyl-, cycloalkyl-, or alkyl aryl or aryl group or a hydroxyalkyl group, or an acetoxyethyl —(CH 3 —CO—O—CH 2 —CH 2 —), hydroxyisopropyl —(HO—CH(CH 3 )—CH 2 —), acetoxyisopropyl group (CH 3 —CO—O—CH(CH 3 )—CH 2 —), or R 5 and R 6 together form a ring, whereof nitrogen forms a part, in order to constitute a morpholine or imidazoline ring, wherein R 7 is a C 2 -C 4 alkylene group and R 8 and R 9 independently of each other are each a C 1 to C 20 alkyl-, cycloalkyl-, alkyl aryl- or an aryl group or a hydroxyalkyl group, a/b/c/d=(0.1-0.9)/(0.1-0.9)/(0-0.8)/(0-0.3), and a+b+c+d=1.