A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
DISPERGIERMITTEL FÜR GIPSZUSAMMENSETZUNGEN
Use of a polymer mixture comprising at least one polymer (Pa) and (Pb) as a dispersing agent for a gypsum composition, where (i) the polymers (Pa) and (Pb) are respectively a polymer (P) comprising (a) a main chain containing hydrocarbon groups, (b) at least one side chain comprising at least one acid group comprising carboxylic acid group, sulfonic acid group, phosphonic acid, phosphoric acid group or its salt, and (c) at least one side chain comprising at least one polyoxyalkylene group, and (ii) the polyoxyalkylene group is bonded via a connecting part to the main chain, is claimed. Use of a polymer mixture comprising at least one polymer (Pa) and (Pb) as a dispersing agent for a gypsum composition, where (i) the polymers (Pa) and (Pb) is respectively a polymer (P) comprising (a) a main chain containing hydrocarbon groups, (b) at least one side chain comprising at least one acid group comprising carboxylic acid group, sulfonic acid group, phosphonic acid, phosphoric acid group or its salt, and (c) at least one side chain comprising at least one polyoxyalkylene group, (ii) the polyoxyalkylene group is bonded via a connecting part comprising at least one ester, amide or imide group, to the main chain, (iii) the acid content of the polymer (Pa) is 1.5-4, preferably 7.1-5.3 mmole of acid groups per 1 g of polymer and the acid content of the polymer (Pb) is 0.5-1.4, preferably 0.9-1.2 mmole of acid groups per 1 g of polymer, (iv) the weight ratio of polymer (Pa) to the polymer (Pb) is 50-95:5-50, preferably 70-90:10-30, and (v) the gypsum composition is a composition made of mineral binders, which comprises at least 30 wt.% of gypsum, based on the total weight of the mineral binder, is claimed. Independent claims are also included for: (1) the mineral binder-containing mixture comprising at least 30 wt.% of gypsum, based on the total weight of the mineral binder and the polymer mixture comprising the polymer (Pa) and (Pb); and (2) the dispersing agent for the gypsum composition comprising 1-95 wt.% of the polymer mixture and 0-95 wt.% of water.
DISPERGIERMITTEL FÜR GIPSZUSAMMENSETZUNGEN
Use of a polymer mixture comprising at least one polymer (Pa) and (Pb) as a dispersing agent for a gypsum composition, where (i) the polymers (Pa) and (Pb) are respectively a polymer (P) comprising (a) a main chain containing hydrocarbon groups, (b) at least one side chain comprising at least one acid group comprising carboxylic acid group, sulfonic acid group, phosphonic acid, phosphoric acid group or its salt, and (c) at least one side chain comprising at least one polyoxyalkylene group, and (ii) the polyoxyalkylene group is bonded via a connecting part to the main chain, is claimed. Use of a polymer mixture comprising at least one polymer (Pa) and (Pb) as a dispersing agent for a gypsum composition, where (i) the polymers (Pa) and (Pb) is respectively a polymer (P) comprising (a) a main chain containing hydrocarbon groups, (b) at least one side chain comprising at least one acid group comprising carboxylic acid group, sulfonic acid group, phosphonic acid, phosphoric acid group or its salt, and (c) at least one side chain comprising at least one polyoxyalkylene group, (ii) the polyoxyalkylene group is bonded via a connecting part comprising at least one ester, amide or imide group, to the main chain, (iii) the acid content of the polymer (Pa) is 1.5-4, preferably 7.1-5.3 mmole of acid groups per 1 g of polymer and the acid content of the polymer (Pb) is 0.5-1.4, preferably 0.9-1.2 mmole of acid groups per 1 g of polymer, (iv) the weight ratio of polymer (Pa) to the polymer (Pb) is 50-95:5-50, preferably 70-90:10-30, and (v) the gypsum composition is a composition made of mineral binders, which comprises at least 30 wt.% of gypsum, based on the total weight of the mineral binder, is claimed. Independent claims are also included for: (1) the mineral binder-containing mixture comprising at least 30 wt.% of gypsum, based on the total weight of the mineral binder and the polymer mixture comprising the polymer (Pa) and (Pb); and (2) the dispersing agent for the gypsum composition comprising 1-95 wt.% of the polymer mixture and 0-95 wt.% of water.
DISPERGIERMITTEL FÜR GIPSZUSAMMENSETZUNGEN
DISPERSANT FOR GYPSUM PLASTER COMPOSITIONS
AGENT DE DISPERSION POUR COMPOSITIONS DE PLÂTRE
HAMPEL CHRISTINA (author) / ZIMMERMANN JÖRG (author) / AL SHEMARI JABBAR (author) / MÜLLER MARKUS (author)
2017-04-26
Patent
Electronic Resource
German
IPC:
C04B
Kalk
,
LIME
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