POLYCONDENSATION PRODUCT BASED ON AROMATIC COMPOUNDS, METHOD FOR THE PREPARATION AND USE THEREOF

摘要

Proposed is a polycondensation product comprising as monomer components at least one aryl polyoxyalkylene ether, at least one vicinally disubstituted aromatic compound, at least one aldehyde and also optionally further aromatic compounds; processes for preparing same, and also use thereof as dispersant for aqueous suspensions of inorganic binders and as grinding assistant for inorganic binders.

主权项

1. A process comprising utilizing a polycondensation product as a dispersant for aqueous suspensions of inorganic binders selected from the group encompassing latent hydraulic binders, pozzolanic binders, alkali-activated and/or alkali-activatable aluminosilicate binders, and also mixtures thereof,
wherein said polycondensation product comprises as monomer components: A) at least one aryl polyoxyalkylene ether of the formula (I) whereAr is an aryl group,R1 and R2 each independently of one another are selected from H, methyl and ethyl, with optionally at least one of the groups R1 and R2 being H,m is an integer from 1 to 300 andR3 is selected from the group consisting of H, alkyl, aryl, aralkyl, alkaryl, phosphate, and also mixtures thereof; B) at least one aromatic compound of the formula (II), where R4 and R5 each independently of one another are selected from H, R8, OH, OR8, C(O)R8, COOH, COOR8, SO3H, SO3R8 and NO2 and also alkali metal salts, alkaline earth metal salts and ammonium salts thereof, or together are a further fused-on ring, where R8 each independently is selected from the group consisting of alkyl, aryl, aralkyl, alkaryl, and R6 and R7 each independently of one another are selected from OH, OR9, C(O)R9, COOH and COOR9 and also alkali metal salts and alkaline earth metal salts and ammonium salts thereof, where R9 each independently is selected from the group consisting of alkyl, aryl, aralkyl, alkaryl; C) at least one aldehyde; and also optionally D) at least one further aromatic compound, selected from the group consisting of phenol, 2-phenoxyethanol, 2-phenoxyethyl phosphate, 2-phenoxyethyl phosphonate, 2-phenoxyacetic acid, 2-(2-phenoxyethoxy)ethanol, 2-(2-phenoxyethoxy)ethyl phosphate, 2-(2-phenoxyethoxy)ethyl phosphonate, 2-[4-(2-hydroxyethoxy)phenoxy]ethyl phosphate, 2-[4-(2-hydroxyethoxy)phenoxy]ethyl phosphonate, 2-[4-(2-phosphonatooxyethoxy)phenoxy]ethyl phosphate, 2-[4-(2-phosphonatooxyethoxy)phenoxy]ethyl phosphonate, methoxyphenol, phenolsulphonic acid, furfuryl alcohol, and also mixtures thereof.