Byk-chemie Gmbh

Byk Netherlands B.v.

Albert Frank

Wojciech Jaunky

Jürgen Omeis

Alfred Bubat

Karlheinz Haubennestel

Bernd Göbelt

Marc Hans

René Nagelsdiek

Udo Krappe

Petra Della Valentina

Thomas Launag

Andreas Okkel

Daniela Leutfeld

Jörg Bömer

Bärbel Gertzen

Jörg Issberner

Wolfgang Griesel

Axel Woocker

Hendrik Luttikhedde

Hiroshi Yonehara

Ryo Takabayashi

Benjamin Lindner

Verena Wintermeyer

Stefan Mossmer

Petra Lenz

Hans-Willi Bogershausen

Dinah Grawe

Michaela Michelbrink

Yoshizumi Kohara

Hans-Willi BÖGERSHAUSEN

Jaunky Wojciech

Michaela Vorderwülbeke

The invention relates to a non-pigmented composition comprising a) a block co-polymer comprising at least one first block and at least one second block which is different from the first block, wherein the first block comprises repeating units 1, repeating unit 1 and the second block comprises repeating units 2, repeating unit 2 wherein Z represents O or NH, Rrepresents H or CH, Rrepresents a group selected from hydrocarbyl groups and ether group-containing groups, Rrepresents an organic group having 2 to 4 carbon atoms, Rand Rindependently represent an organic group, wherein Rand Rare optionally linked to each other to form a cyclic structure, and b) a polymer comprising at least one acidic group, and having a number average molecular weight of 300 g/mol or higher.

Non-pigmented dispersant composition

The present invention relates to the use of polyhydroxyalkanoates as additives in coating compositions and also to coating compositions comprising polyhydroxylalkanoates as matting agents. The present invention further relates to coatings produced with the coating composition of the invention, comprising polyhydroxyalkanoates, on a substrate.

Use of polyhydroxyalkanoates as additives in coating compositions

The invention relates to a copolymer which contains at least one polysiloxane group and the skeletal structure of which is an addition compound of at least one amine and at least one epoxide. The invention further relates to the use of said products as additives in coating agents, plastics, or homogeneous dispersions, e.g. as a dispersing agent for organic and inorganic pigments and fillers in oil-based compositions, or as a surface modifying agent.

Copolymers containing polysiloxane groups and having an epoxy/amine skeletal structure, and use thereof

The invention relates to a copolymer which can be obtained by free-radical copolymerization of one or more urethane-based, polysiloxane-containing macromonomers and one or more further free-radically polymerizable comonomers. Processes for preparing the copolymer and its use as additive in coating compositions and plastics and as wetting agent and dispersant in homogeneous dispersions are also described.

Copolymers which can be obtained from urethane-based, polysiloxane-containing macromonomers, processes for the preparation thereof and their use

Process for preparing a macromonomer, in which a starting compound HC&#x2550;CR&#x2014;CH(R)&#x2014;R&#x2014;OH or HC&#x2550;CR&#x2014;CO&#x2014;NH&#x2014;R&#x2014;OH, where Rand Rare each H or a linear or branched alkyl radical having from 1 to 4 carbon atoms, Ris a linear or branched alkylene, aralkylene radical which has from 1 to 20 carbon atoms and can contain one or more hydroxy groups and the radicals Rare each, independently of one another, a linear or branched alkyl, aralkyl, alkoxy or aralkoxy radical having from 1 to 20 carbon atoms and s=0-4, is, after partial deprotonation, reacted with at least one hydroxy-functional oxirane compound in the presence of an inhibitor of free-radical polymerization with opening of the oxirane ring, where the molar ratio of the molar amounts used n:nis in the range from 1:100 to 1:1. Macromonomers which can be obtained by the process, polymers which can be obtained therefrom and their use as additives in coating compositions, plastics and cosmetics.

Terminal unsaturated, glycidol-based macromonomers, polymers obtainable therefrom, preparation and use

A process for preparing a macromonomer by cationic ring-opening polymerization of at least one hydroxyoxetane with a terminally ethylenically unsaturated starter molecule free of allyl groups in a molar ratio (hydroxyoxetane(s):starter molecule) of (100:1) to (1:1) in the presence of at least one suitable catalyst; macromononomers obtainable therefrom and use thereof.

Terminally unsaturated, oxetane-based macromonomers, and methods for the production thereof

A process for preparing a randomly branched copolymer, by reacting the components (a) 10-98.9 mol % of at least one acrylic ester of a straight-chain, branched or cyclic C-C-alkyl monoalcohol, (b) 0.1-10 mol % of at least one polyethylenically unsaturated monomer and (c) optionally one or more monoethylenically unsaturated monomers other than acrylic esters of straight-chain, branched or cyclic C-C-alkyl monoalcohols and other than compounds of the formula (I), in the presence of (d) 1-10 mol % of at least one compound of the formula (I) HC&#x2014;CRR&#x2014;CH&#x2014;CR&#x2014;CH(I) where R, Rare each independently aryl, CN or COORwhere R&#x2550;H, alkyl, aryl or aralkyl, and R=alkyl, aryl or aralkyl, and is the presence of at least one initiator of free-radical polymerization in a free-radical polymerization, where the stated molar proportions of components (a), (b), (c) and (d) add up to 100 mol %, and where the molar proportion of component (b) does not exceed the molar proportion of component (d), Copolymers obtainable by the process and use thereof as levelling agents in coating substances.

Randomly branched copolymers, preparation thereof and use thereof as levelling agents in coating substances

The invention relates to the use of copolymers which as well as other monomers contain in copolymerized form 10% to 90% by weight of monomers containing heterocyclic basic groups, and which do not contain vinylpyrrolidone as a monomer component, as additives in paints for improving the adhesion of the solid paint film to a substrate. The invention also relates to cured and uncured polymer compositions comprising copolymers which as well as other monomers contain in copolymerized form 10% to 90% by weight of monomers containing heterocyclic basic groups, and which do not contain vinylpyrrolidone as a monomer component, as adhesion improver additions.

Use of copolymers as adhesion promoters in lacquers

A polymer obtainable by free-radical polymerization of one or more oxetane-based macromonomers and optionally one or more further, free-radically polymerizable comonomers, the oxetane-based macromonomer(s) being obtainable by cationic ring-opening polymerization of at least one hydroxyoxetane with a terminally ethylenically unsaturated starter molecule free of allyl groups in a molar ratio (hydroxyoxetane(s):starter molecule) of (100:1) to (1:1) in the presence of at least one suitable catalyst. Processes for preparing the polymer and the use thereof as an additive in coating compositions and plastics.

Polymers obtainable from oxetane based macromonomers, method for the production thereof, and the use thereof as additives in coating agents and plastics

The invention relates to a method for production of polyhydroxyfunctional polysiloxanes with branched polyglycidol polyether groups, in which firstly at least one allylic or methallylic starting material is reacted with at least one glycidol, such that an allyl polyether or methallyl polyether is formed, and then the allyl polyether or methallyl polyether thus produced is added to a Si&#x2014;H functional alkyl polysiloxane in the presence of an acid buffering agent. The invention further relates to polysiloxanes, which may be obtained by said method and the use of the polysiloxanes in coating agents, polymeric coating masses and thermoplastics.

Polyhydroxyfunctional polysiloxane as anti-adhesive and dirt-repellant additives

The invention relates to the use of a polyamide prepared from at least one diamine and at least one dicarboxylic acid in a formulation for defoaming aqueous media. The invention also relates to defoamers for aqueous media that comprise such a polyamide.

Antifoaming agent for aqueous media

The invention relates to the use of block copolymers as leveling agents for surface coatings, having a weight-average molecular weight of from 1000 to 100000. The leveling agent is a linear or branched block copolymer composed of a polysiloxane block and one or more blocks prepared from ethylenically unsaturated monomers by controlled free-radical addition polymerization. The invention also relates to coating compositions which comprise the leveling agent.

Use of polyacrylate-modified polysiloxanes as levelling agents in coating compositions

The invention relates to coating compositions having anti-adhesion and dirt repellency properties, these compositions being admixed as additive with from 0.1 to 10% by weight, based on the solids content of the coating composition, of a branched polymer which possesses a weight-average molecular weight of from 2000 to 200,000 and comprises a polymeric base molecule and also polydiorganosiloxane side chains which are bonded covalently to the base molecule via Si&#x2014;C bonds, have a weight-average molecular weight of between 1000 and 30,000, and whose fraction of the total weight of the branched polymer is from 5 to 25% by weight. The present invention further relates to polymeric moulding compounds having anti-adhesion and dirt repellency properties, to which this branched polymer is added as additive in an amount of from 0.1 to 10% by weight, based on the total weight of the polymeric moulding compounds. The invention additionally relates to the use of the branched polymers as additives for coating compositions and polymeric moulding compounds.

Coating compositions and polymeric moulding compounds having anti-adhesion and dirt repellency properties

The invention relates to levelling agents for surface coatings having a weight-average molecular weight of from 5000 to 100,000. The levelling agent is a branched polymer comprising a free-radically or ionically polymerized base molecule into which macromonomeric units containing at one end a monomeric unit which has an ethylenically unsaturated bond and possessing a weight-average molecular weight of from 1000 to 30,000 have been incorporated by free-radical or ionic copolymerization, the weight fraction of the macromonomeric units, based on the total weight of the branched polymer, being from 1 to 60% by weight. The invention further relates to the use of appropriate polymers as levelling agents for coating formulations and to coating formulations comprising the levelling agents of the invention.

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Xanten, Germany

Albert Frank