Production of comb polymers by means of esterification

The invention relates to a method for producing comb polymers, wherein at least one polycarboxylic acid or a salt thereof is esterified with at least one monohydroxy polyether. The method comprises the following steps: (a) preparing a reaction mixture containing at least one polycarboxylic acid; (b)...

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Bibliographic Details
Main Authors FRUNZ LUKAS, WEIDMANN JUERG, ZIMMERMANN JOERG, SULSER UELI
Format Patent
LanguageChinese
English
Published 31.07.2013
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
REFRACTORIES
SLAG
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OF NATURAL STONE
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Summary:The invention relates to a method for producing comb polymers, wherein at least one polycarboxylic acid or a salt thereof is esterified with at least one monohydroxy polyether. The method comprises the following steps: (a) preparing a reaction mixture containing at least one polycarboxylic acid; (b) heating the reaction mixture to at least 80 DEG C; (c) adding a base; and (d) esterifying the mixture at a reaction temperature of at least 80 DEG C and meanwhile obtaining the comb polymers, wherein at least one monohydroxy polyether is added to the reaction mixture in step (a) and/or (b). The invention further relates to comb polymers, cement compositions, molded bodies, and uses of comb polymers.
Bibliography:Application Number: CN201180056848