Evonik Roehm Gmbh

Evonik Rohm Gmbh

Liquidpower Specialty Products Inc.

Conocophillips Company

Gerold Schmitt

Joachim Knebel

Wolfgang Klesse

Christine Maria Breiner

Dieter Tessmer

Stuart N Milligan

Kenneth W Smith

Ray L Johnston

Timothy L Burden

William Franklin Harris, Jr

Patrik Hartmann

Volker Kerscher

Guido Protzmann

Thorben Schuetz

Ralf Merbach

Klaus Gottmann

Wayne R Dreher

Mario Gomez Andreu

Wilhelm Karnbrock

John Hirsh

John Wey

Volker Herzog

Martina Ebert

Sabine Koemmelt

Ina Zwierzchowski

Margarita Stein

Reinhold Martin

A flow improver comprising a plurality of core-shell particles that can be formed by emulsion polymerization. The core of the core-shell particles can include a drag reducing polymer, while the shell of the particles can include repeat units of a hydrophobic compound and an amphiphilic compound. The flow improver can demonstrate increased pumping stability over conventionally prepared latex flow improvers.

Core-shell flow improver

Process for preparing (meth)acrylates of the formula (I)CH&#x2550;C(R)&#x2014;CO&#x2014;O&#x2014;R&#x2003;&#x2003;(I)in which Ris hydrogen or methyl andRis a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C-C)-aryl-(C-C)-alkyl radical;by reacting a (meth)acrylate of the formula IICH&#x2550;C(R)&#x2014;CO&#x2014;OR&#x2003;&#x2003;(II)with an alcohol of the formula (III)HO&#x2014;R&#x2003;&#x2003;(III)in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization;the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in thatthe specific total oxygen input is less than or equal to 1.0 l/kg, measured in liters of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25&#xb0; C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

Process for preparing (meth)acrylates

The invention describes a composition, especially in the form of a 2-component system comprising (meth)acrylated polyether polyols and/or polyester polyols and/or (meth)acrylated hydroxy-functionalized triglycerides with an adjustable pot life, especially for cable potting compounds.

Reactive resins for cable sealing compounds

Process for preparing (meth)acrylates of the formula (I)CH&#x2550;C(R)&#x2014;CO&#x2014;O&#x2014;R&#x2003;&#x2003;(I) The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

The invention relates to a method for producing methacrylated benzophenones and to the uses thereof.

Method for producing methacrylated benzophenones

The invention describes a composition comprising, in the form of aqueous dispersion, A) for every 100 parts by weight of a, or of a plurality of, (meth)acrylate polymer(s); B) from 1-400 parts by weight of a, or of a plurality of, (meth)acrylate polymer(s), which contain(s) a compound of the formula (I) copolymerized, where the (meth)acrylate polymer(s) B) differ from the (meth)acrylate polymers specified in A), where these are obtainable by emulsion polymerization of a mixture comprising  Dispersions of this type are UV-curable and have excellent suitability for the production of coatings of any type, in particular for coating of mineral substrates, such as concrete. The dispersions of the invention are also advantageous for blending with known dispersions and improve their properties, in particular in respect of their curing profile.

Composition comprising as the aqueous dispersion preferably (meth)acrylate polymers containing benzophenone in a mixture with (meth)acrylate polymers different therefrom and the use of said composition

The present invention relates to a coating composition comprising at least one photo-initiator and at least one (meth)acryl-polymer having units that are derived from (meth)acryl-monomers that have at least one double bond and 8 to 40 carbon atoms in the alkyl residue. The present invention furthermore relates to a monomer mixture comprising at least one (meth)acryl-monomer having at least one double bond and 8 to 40 carbon atoms in the alkyl residue and at least one photo-initiator monomer and a (meth)acryl-polymer that can be obtained by polymerization of said monomer mixture. The present invention furthermore relates to a method for producing a coating. The present invention furthermore relates to a coated object comprising a coating obtained by said method.

Coating composition, (meth)acrylic polymer and monomer mixture for producing the (meth)acrylic polymer

The present invention relates to an emulsion polymer comprising at least one (meth)acrylate segment which comprises

Emulsion polymers, aqueous dispersions and method for producing the same

The present invention relates to an aqueous dispersion comprising at least one alkyd resin and at least one addition polymer having at least one (meth)acrylate segment which comprises

Aqueous dispersions including at least one alkyd resin and at least one addition polymer having at least one (meth)acrylat-segment

The invention describes an emulsion polymer which can be obtained by polymerization of a mixture comprising  where the radicals Rto Rand X have the meanings given in the description; and in that

Emulsion polymer comprising activators, process for preparation thereof and use thereof in two-component or multicomponent systems

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Aschaffenburg, Germany

Gerold Schmitt