Basf Se Corporation

Lucia Jimenez Garcia

Dirk Lawrenz

Nico Veling

Kathrin Michl

Ingolf Hennig

Matthias Georg Schwab

Juergen Blaul

Kitty Chih-Pei Cha

Jürgen Blaul

The invention relates to an aqueous dispersion of a polymer P, which comprises the emulsion polymerization of vinyl acetate, an acrylate monomer, which is a C-Calkyl acrylate or a C-Cmethacrylate, an &#x3b1;,&#x3b2;-ethylenically unsaturated C-Ccarboxylic acid and at least one out of glycidyl methacrylate, glycidyl acrylate, allyl methacrylate and allyl acrylate, in the presence of a starch derivative. Optionally, an additional monomer is an ethylenically unsaturated sulfonic acid, an ethylenically unsaturated other monomer or both of them. The aqueous polymer dispersion and a powder form thereof are useful for a paper coating slip containing one of the aforementioned forms. A paper or a cardboard, which is coated with the paper coating slip, shows surface strength, which is expressed by a good dry pick resistance, a good wet pick resistance or good offset test results. The aqueous polymer dispersion or the powder form thereof is furthermore useful as a binder.

Aqueous polymer dispersion for paper with a copolymer of vinyl acetate and an acrylate monomer prepared in the presence of a starch derivative

Aqueous polymer dispersions and their use for producing shaped articles having improved heat resistance are described.

Method for preparing an aqueous polymer dispersion

The invention relates to a process for preparing an aqueous dispersion of a polymer P, which comprises the emulsion polymerization of vinyl acetate, an acrylate monomer, which is a C-Calkyl acrylate or a C-Cmethacrylate, an &#x3b1;,&#x3b2;-ethylenically unsaturated C-Ccarboxylic acid, glycidyl methacrylate or glycidyl acrylate, optionally an ethylenically unsaturated sulfonic acid and optionally an ethylenically unsaturated other monomer. Furthermore, the aqueous polymer dispersion obtainable from this process and a powder form thereof are disclosed. They are useful for a paper coating slip containing one of the aforementioned forms. A paper or a cardboard, which is coated with the paper coating slip, shows surface strength, which is expressed by a good dry pick resistance, a good wet pick resistance or good offset test results. The aqueous polymer dispersion or the powder form thereof is furthermore useful as a binder.

Aqueous polymer dispersion for paper with a copolymer of vinyl acetate and an acrylate monomer

Disclosed are electrically conducting shaped articles and also a process for producing same from granular and/or fibrous substrates.

Production of shaped articles

The invention relates to a process for preparing an aqueous dispersion of a polymer P, which comprises the emulsion polymerization of vinyl acetate, an acrylate monomer, which is a C-Calkyl acrylate or a C-Cmethacrylate, an &#x3b1;,&#x3b2;-ethlyenically unsaturated C3-C8 carboxylic acid and at least one out of glycidyl methacrylate, glycidyl acrylate, allyl methacrylate and allyl acrylate, in the presence of a starch derivative. Optionally, an additional monomer is an ethylenically unsaturated sulfonic acid, an ethylenically unsaturated other monomer or both of them. Furthermore, the aqueous polymer dispersion obtainable from this process and a powder form thereof are disclosed. They are useful for a paper coating slip containing one of the aforementioned forms. A paper or a cardboard, which is coated with the paper coating slip, shows surface strength, which is expressed by a good dry pick resistance, a good wet pick resistance or good offset test results. The aqueous polymer dispersion or the powder form thereof is furthermore useful as a binder.

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Mannheim, Germany

Lucia Jimenez Garcia