| 摘要 |
A polymer having the formula (XIV);;as a dispersing agent for powder-form substances, typically selected from the group consisting of clays, porcelain slip, silicate flour, chalk, carbon black, rock flour, pigments, talc, plastic powders and mineral binders, and methods for improving the flow properties of powder-form substances and mixtures including powder-form substances and polymers having the formula (XIV). |
| 主权项 |
1. A polymer composition comprising:
having the formula (XIV) as a where X is H+, an alkali metal ion, an alkaline earth metal ion, a divalent or trivalent metal ion, an ammonium ion, an organic ammonium group or an organic group having a molecular weight of ≦200 g/mol; where Y is one of the formulas (II) to (VI) where W is one of the formulas (VII) to (X); where R1 is H, an alkyl group, an alkylaryl group, or formula (XI); where independently of one another the substituent is a C2 to C4 alkylene group, the subscript q is a value from 2 to 300, the subscript n is a value from 2 to 4, and the subscript r is a value from 0 to 1; where R2, R3 and R4 independently of one another are H, CH3, COOH or CH2—COOH; R5 is —CH2—CH2— or —CH2—CH(CH3)—; and R6 is O or N; and R7 is a polymer comprising at least one monomer M in the polymerized state, wherein R7 has a molecular weight of 500 to 200,000 g/mol; the monomer M being selected from the group consisting of:
monoethylenically unsaturated (C3 to C6)monocarboxylic and dicarboxylic acids and their C1-C20 alkyl esters and (methyl-)poly(oxyalkylene)esters, their amides, nitriles and anhydrides,(C1 to C20)(meth)alkyl acrylates, (C1 to C20)(meth)alkylacrylamides, (C1 to C20)(meth)alkyl acrylonitriles and (methyl-)poly(oxyalkylene)(meth)acrylates,vinyl esters of carboxylic acids containing up to 20 carbon atoms, vinyl aromatic compounds having up to 20 carbon atoms,vinyl ethers and allyl ethers of alcohols containing 1 to 12 carbon atoms, (methyl-)poly(oxyalkylene)allyl ethers, (methyl-)poly(oxyalkylene)vinyl ethers,aliphatic hydrocarbons having 2 to 10 carbon atoms and 1 or 2 olefinic double bonds, cyclic and open-chain N-vinyl amides,and mixtures of these monomers. |
