| 摘要 |
Polymer dispersion contains a copolymer using as monomer, a conjugated aliphatic diene; a vinylaromatic monomer; an alkanediol monoester with (meth)acrylic acid, or an alkylpolyethylene glycol (meth)acrylate, or a mixture of monoester and acrylate; an ethylenically unsaturated monomer with an acid group or its salts; an unsaturated nitrile; and an unsaturated mono or dicarboxylic acid amide. A polymer dispersion containing at least one copolymer using as monomer (wt.%): (a) at least one conjugated aliphatic diene (25-70); (b) at least one vinyl aromatic monomer (25-70); (c) at least one 2-10C alkane diol monoester with (meth)acrylic acid (2.5-15); or (c') at least one alkylpolyethylene glycol (meth)acrylate (0.1-10) of formula (I); or, (c'') a mixture of monoester (c) and acrylate (c') (2-15); (d) an ethylenically unsaturated monomer with at least one acid group or its salts (0-1.0); (e) an ethylenically unsaturated nitrile (0-5.0); and (f) an amide of an alpha,beta-ethylenically unsaturated mono- or dicarboxylic acids (0-1.0). R1 = H or methyl; R2 = 1-4C alkyl; and n = 1-100. An Independent claim is included for a process for improving the mechanical strength, elasticity, and workability of building materials based on a hydraulic binder, where at least one hydraulic binder, at least one polymer dispersion, and/or a polymer powder or granulate, and optionally water and/or additives are mixed.
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