Basf Se Corporation

Basf Aktiengesellschaft

Basf Lacke+farben Ag

Basf Lacke+ Farben Aktengesellschaft

Basf Lacke+ Farben Aktiensellschaft

Dirk Lawrenz

Juergen Schmidt-Thuemmes

Nico Veling

Carmen-Elena Cimpeanu

Thomas Schwerzel

Hans Schupp

Ulrich Heimann

Elitsa Evstatieva

Hermann Seyffer

Lucia Jimenez Garcia

Rainer Blum

Thomas Wirth

Theo Smit

Hans-Josef Oslowski

Hartmann F Leube

Bernhard Schuler

Klaus Huemke

Simon Nord

Hans Josef Oslowski

Rabie Al-Hellani

Guillermo Arens

Anja Song

Bernhard Prantl

Kristina Georgieva

Oliver Birkert

Tobias Joachim Koplin

Berthold Sturm

Aurélie Morel

Ulrike Geissler

Rolf Walz

Wolfgang Garber

Johannes Jan-Bessel Minderhoud

Harald Nissler

Oliver Reimers

Jürgen Schmidt-Thümmes

A process for preparing an aqueous polymer dispersion by radically initiated aqueous emulsion polymerization of

Method for producing an aqueous polymer dispersion from a vinyl aromatic compound and a conjugated aliphatic diene

The present invention relates to a process for producing an aqueous polymer dispersion by free-radically initiated aqueous emulsion polymerization, and also to the aqueous polymer dispersions produced by the process and to the use of these as a binder, adhesive, sizing agent for fibers, for the production of coatings or for the production of a paper coating slip.

Method for producing an aqueous polymer dispersion from vinylaromatic compound and conjugated aliphatic diene

The present invention relates to a process for producing an aqueous polymer dispersion by free-radically initiated aqueous emulsion polymerization, by polymerizing, in an aqueous medium,

Method for preparing an aqueous polymer dispersion from a vinyl aromatic compound and a conjugated aliphatic diene

The invention relates to a use of a coating layer on a paper substrate for blocking oxygen transfer through the coated paper substrate, wherein the coating layer on the paper substrate is obtainable by a process, which comprises the steps of (a) providing a paper substrate with a surface, (b) applying onto the surface of the provided paper substrate an aqueous coating mass, and (c) drying of the paper substrate with the applied aqueous coating mass to obtain the coated paper substrate, wherein the aqueous coating mass contains an aqueous dispersion of a copolymer P, which is obtainable by radically initiated emulsion polymerization of at least 40 parts by weight of styrene and 22 to 49 parts by weight of butadiene and optionally other monomers based on the sum total of the parts by weight of all monomers, which is always 100, in the presence of a first degraded starch. It relates further to a coated paper substrate obtainable with a coating mass comprising the aqueous dispersion of the copolymer P and a further saccharide, which is added after the polymerization of the monomers. It relates also to a process for manufacturing the coated paper substrate obtainable with a coating mass comprising the aqueous dispersion of the copolymer P and the further saccharide.

Use of a coating layer with a styrene-butadiene copolymer on a paper substrate for blocking oxygen transfer

The invention relates to a use of a coating layer on a paper substrate for blocking oxygen transfer through the coated paper substrate, wherein the coating layer on the paper substrate is obtainable by a process, which comprises the steps of (a) providing a paper substrate with a surface, (b) applying onto the surface of the provided paper substrate an aqueous coating mass, and (c) drying of the paper substrate with the applied aqueous coating mass to obtain the coated paper substrate, wherein the aqueous coating mass contains an aqueous dispersion of a polymer P, which is obtainable by radically initiated emulsion polymerization of at least 25 parts by weight of a C-Calkyl acrylate or a C-Calkyl methacrylate based on the sum total of the parts by weight of all monomers, which is always 100, in the presence of a first degraded starch. It relates further to a coated paper substrate obtainable with a coating mass comprising the aqueous dispersion of the polymer P and a further saccharide, which is added after the polymerization of the monomers. It relates also to a process for manufacturing the coated paper substrate obtainable with a coating mass comprising the aqueous dispersion of the polymer P and the further saccharide.

Use of a coating layer with an acrylate polymer on a paper substrate for blocking oxygen transfer

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

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

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.

Described is an aqueous polymer dispersion comprising a chain growth addition polymer obtainable via free-radically initiated emulsion polymerization from ethylenically unsaturated, free-radically polymerizable monomers, wherein the chain growth addition polymer is formed to an extent of not less than 60 wt % from primary monomers selected from vinylaromatic compounds, conjugated aliphatic dienes, vinyl esters of saturated C- to C-carboxylic acids, esters of acrylic acid or of methacrylic acid with monohydric C- to C-alcohols, aliphatic hydrocarbons having 2 to 8 carbon atoms and one or two double bonds, or mixtures thereof, wherein the monomers are polymerized in the presence of lignosulfonate and wherein the chain growth addition polymer is branched or crosslinked. Also described is a process for preparing the aqueous polymer dispersion. The polymer dispersion is useful for preparing paper coating compositions.

Aqueous polymer dispersion obtainable by free-radically initiated emulsion polymerization in the presence of lignosulfonate

Described are aqueous polymer dispersions and methods of making them. The polymer dispersions are obtainable by free-radically initiated emulsion polymerization of 19.9 to 80 parts by weight of vinylaromatic compounds, 19.9 to 80 parts by weight of acrylate monomers selected from C1-C10 alkyl acrylates and C1-C10 alkyl methacrylates, 0.1 to 10 parts by weight of ethylenically unsaturated acids, and 0 to 20 parts by weight of other ethylenically unsaturated monomers, wherein the emulsion polymerization is effected in an aqueous medium in the presence of free-radical initiators, seed latex and also at least one carbohydrate compound in the form of a degraded starch. The polymer dispersions are particularly useful in the manufacture of paper coating slips.

Polymer dispersions of vinylaromatic compounds and acrylate monomers prepared in the presence of seed latex and carbohydrate compounds

A process for the preparation of aqueous polymer dispersions is described, a vinylaromatic compound, such as, for example, styrene, a conjugated aliphatic diene, such as, for example, butadiene, and an ethylenically unsaturated carbonitrile, such as, for example, acrylonitrile, being copolymerized in an aqueous medium. The copolymerization is effected in the presence of a degraded starch and of free radical initiators. At least part of the monomers differing from ethylenically unsaturated carbonitriles are polymerized before the ethylenically unsaturated carbonitriles are added to the polymerization mixture.

Process for the preparation of aqueous polymer dispersions from a aromatic compound, a conjugated aliphatic diene and an ethylenically unsaturated carbonitrile

Aqueous polymer dispersions based on copolymers of vinyl aromatics and conjugated aliphatic dienes having a mean particle size of from 80 to 150 nm, obtained by free radical emulsion copolymerization of

Aqueous polymer dispersions based on copolymers formed from vinylaromatics and conjugated aliphatic dienes, processes for preparation thereof and use thereof

Use in rotogravure printing of paper-coating compounds with a high

Process for making a printing paper with binder mixtures for paper

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Hassloch, Germany

Dirk Lawrenz