Byk-chemie Gmbh

Eckart Gmbh

Byj-chemie Gmbh

Alfred Bubat

Karlheinz Haubennestel

Albert Frank

Jürgen Omeis

Wojciech Jaunky

Ulrich Nolte

Bernd Göbelt

Thomas Sawitowski

Udo Krappe

Wolfgang Griesel

Wolfgang Pritschins

René Nagelsdiek

Phu Qui Nguyen

Bärbel Gertzen

Jörg Issberner

Petra Della Valentina

Karl-Heinz Haubennestel

Daniela Betcke

Marc Hans

Hans-Jörg Kremitzl

Jürgen Hartmann

Axel Woocker

Jörg Garlinsky

Frank Albert

Joerg Garlinsky

Tom Beckmann

Hans-Willi Boegershausen

Frank Tlauka

Werner Spratte

Daniela Breil

Hans-Willi BÖGERSHAUSEN

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

The invention relates to a method for continuously producing silanes and/or organopolysiloxanes by hydrosilylation, in which at least one compound (A) containing at least one carbon-carbon multiple bond is reacted with at least one compound (B) comprising at least one Si&#x2014;H functionality, wherein the reaction is carried out in a reaction mixing pump.

Method for continuous hydrosilylation

Storage tank loaded with an aqueous medium and made of porous, freely flowing particles, wherein the particles are formed from a hydrophobic polymer and the loading of said particles contains at least one particular mediator additive of the general formula (I), the use of which as an entrainer delivery agent for removing volatile components from plastics, for evenly doping intermediate plastic products and/or plastic articles with adjuvants as a soil improvement agent such as a delivery agent for a pest management agent or fertilizer 

Porous, free-flowing hydrophobic particles loaded with aqueous fluid with compatibilizer additive

The invention relates to surface-modified particles, more particularly inorganic-based particles having reactive surfaces, more particularly surfaces containing silane-reactive and/or siloxane-reactive groups, preferably hydroxyl-containing surfaces and/or particles comprising or consisting of metal and/or semi-metal oxides and/or hydroxides, preferably nanoparticles, which on their surface have a polysiloxane-based modifier having more particularly been reacted on their surface with a polysiloxane-based modifier, preferably with the formation of chemical bonds, more particularly covalent bonds, and also to a method of producing these surface-modified particles.

Surface-modified particles and production method

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

Metallic effect pigments with a platelet-shaped metallic substrate. The pigments have at least one metal oxide layer. Covalently bonded to the surface of the metal oxide layer is a polysiloxane of formula I: where Ris a saturated or unsaturated, straight-chain or branched alkyl radical having 1 to 30 carbon atoms and/or an aryl radical, alkylaryl radical or arylalkyl radical having 6 to 30 carbon atoms; R, R, Rand Rindependently of one another are saturated or unsaturated, straight-chain or branched alkyl radicals having 1 to 6 carbon atoms and/or aryl radicals, alkylaryl radicals and/or arylalkyl radials having 6 to 12 carbon atoms; x=1 to 200, y=2 to 30; A is (CH), O, S, (OCHCH)or CR, where n=0 or 1 and m=0 to 30 and Ris H and/or alkyl having 1 to 6 carbon atoms; B is (CH)or (OCHCH), z=0 to 30 and w=0 to 30; and Rand Rindependently of one another are O or a saturated or unsaturated, straight-chain or branched alkyl radical having 1 to 6 carbon atoms and/or an aryl radical, alkylaryl radical or arylalkyl radical having 6 to 9 carbon atoms, where X is O or OH and is attached to the pigment surface. The disclosure further relates to a method for producing metallic effect pigments and to their use in powder coatings, more particularly in powder coatings produced by mixing methods, as well as to the use of these powder coatings. Finally, the disclosure also relates to powder coatings.

Metal effect pigments, method for the production and the use thereof and powder coating

The invention relates to polyesters which contain carboxy groups and which are used as dispersing agents for pigment concentrates for the colouring of thermoplastics, and to a process for their preparation. The invention further relates to the use of the polyesters as dispersing agents, and also to masterbatches which comprise pigments, thermoplastics and the polyesters.

Dispersing agent for pigment concentrates, its use and masterbatches comprising the dispersing agent

The invention relates to surface-modified nanoparticles composed of metal or semimetal oxides or hydroxides and having been reacted on their surface with a modifier, with formation of covalent bonds. The modifier is a polysiloxane. The invention also relates to a process for preparing the nanoparticles, to their use as fillers in coating materials, plastics, foams and nail varnishes, and to dispersions which comprise the nanoparticles.

Surface-modified nanoparticles comprising polysiloxane modifier, their preparation and use

The invention relates to organosilane-modified polysiloxanes of the following formula:  The invention additionally relates to the use of the organo-modified polysiloxanes for surface coating, and to their preparation.

Organosilane-modified polysiloxanes and their use for surface modification

The invention relates to polyester-modified poly-siloxanes of the general formula (I) where  The invention further relates to the use of the compounds of the invention in thermoplastics, moulding compounds and coating materials.

Polyester-modified polysiloxanes and their use as additives for thermoplastics, moulding compounds and coating materials

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.

Growing community of inventors

Wesel, Germany

Alfred Bubat