Roehm Gmbh & Co Kg

Evonik Roehm Gmbh

Basf Aktiengesellschaft

Evonik Rohm Gmbh

Röhm Gmbh & Co. Kg

Bardo Schmitt

Joachim Knebel

Patrik Hartmann

Wolfgang Klesse

Maik Caspari

Horst Weiss

Guido Protzmann

Christof Mehler

Benedikt Laux

Thomas Kehr

Guenther Graeff

Susanne Steiger

Martina Ebert

Helmut Schlaad

Volker Kerscher

Thorben Schuetz

Gerhard Koelbl

Dirk Broell

Stephan J&uuml;ngling

Andrea Wittkowski

Harald Trauthwein

Christian Maul

Klaus Gottmann

Stephan Jungling

Axel M&uuml;ller

Ingo Sander

Dieter Bathen

Axel Mueller

Marianne Omeis

Reinhold Martin

Hans-Gerhard Stadler

Günther GRÄFF

Bededikt Laux

The invention relates to a process for continuously preparing N-alkyl(meth)acrylamides by reacting alkyl(meth)acrylates with high-boiling amines. A catalyst activation and specific workup technique achieve product qualities which have not been achieved to date. In addition, very high space-time yields and overall yields can be achieved.

Method for continuously producing alkylamino(meth)acrylamides

A method for producing a swellable polymer by polymerizing a composition containing at least one polyalkylene glycol di(meth)acrylate having a weight-average molecular weight from 2500 g/mol to 10000 g/mol, wherein the polymer contains at least 50.0% by weight based on the total weight of the polymer of said at least one polyalkylene glycol di(meth)acrylate.

Use of swellable polymer for sealing

The present invention relates to a process for preparing allyl methacrylate, comprising the reaction of allyl alcohol with an ester of methacrylic acid, wherein the reaction is catalyzed by zirconium acetylacetonate. The process according to the invention enables particularly favorable preparation of allyl methacrylate with a very high purity.

Method for synthesizing allyl methacrylate

The present invention relates to a process for preparing highly pure glyceryl carbonate by transesterifying dialkyl carbonates or cyclic carbonates in the presence of a basic catalyst.

Process for preparing glyceryl carbonate

The invention relates to a process for purifying (meth)acrylates.

Method of purifying (meth) acrylates

Process for the preparation of acrylic and methacrylic acid esters by transesterification of (meth)acrylic acid esters of the formula I: where Ris H or CHand Ris an alkyl radical having 1 to 40 carbon atoms, with alkanols which have four or more esterifiable hydroxyl groups, characterized in that 0.01 to 10% by weight, based on the total reaction mixture, of lithium amide catalysts are used as transesterification catalyst.

Process for the preparation of (meth)acrylates of tetra- or polyhydric alcohols

The present invention relates to mixtures for preparing transparent plastics, encompassing 

Mixture for the production of transparent plastic materials, transparent plastic materials, and method for the production and use thereof

The invention relates to mixtures for producing transparent plastic, which mixtures comprise: a) compounds of formulae (I) and (II), wherein Rindependently represents hydrogen or a methyl group, Rindependently represents a linear or branched, aliphatic or cycloaliphatic group or a substituted or unsubstituted aromatic or heteroaromatic group and m and n independently represent an integer &#x2267;0, with m+n&#x3e;0, b) a prepolymer produced from polymethacrylate and alkyldithiols or polythiols, preferably HS&#x2014;R&#x2014;SH (III), wherein Ris the same or different from Rand may have the definition of R, and c) aromatic vinyl compounds.

Mixtures for producing transparent plastics, transparent plastics and method for producing the same and the use thereof

Mixtures for producing transparent plastics, transparent plastics, method for producing the same and the use thereof

The invention relates to mixtures for producing transparent plastics, comprising a) a prepolymer, produced from the compounds of formulae (I) and (II), wherein Rindependently represents hydrogen or a methyl group, Rindependently represents a linear or branched, aliphatic or cycloaliphatic group or a substituted or unsubstituted aromatic or heteroaromatic group and m and n independently represent an integer greater or equal 0, with m+1&#x3e;0, and compounds of formula (III), alkyldithiols or polythiols, preferably HS&#x2014;R&#x2014;SH (III), wherein Ris equal or different from Rand can have the meaning indicated in R, and b) at least one radically polymerizable monomer (A) having at least two methacrylate groups and c) aromatic vinyl compounds, such as styrene and d) optionally a radically polymerizable monomer having at least two terminal olefinic groups that have different reactivity, and/or e) optionally at least one monomer (B) from the group of methacrylates, preferably 2-hydroxyethylmethacrylate.

Mixtures for producing transparent plastics, transparent plastics and method for their production and use

The invention relates to a method for producing glycerol carbonate methacrylate in the presence of metal-chelate catalysts of the metal ion-1,3-diketonate type.

Method for producing glycerol carbonate methacrylate

The present invention relates to mixtures containing  The present invention further relates to processes for polymerizing these mixtures, the highly transparent polymers thus obtainable and to their use.

Highly transparent plastic for optical materials

The invention relates to a method for transesterifying methyl methacrylate involving catalysis, particularly zirconium acetylacetonate catalysis. The obtained esters of formula (I) are characterized by having an extremely low content of cross-linking agents.

Synthesis of alkylaminoalkyl (meth)acrylate by transesterification

The invention relates to the use of at least one compound from the tocopherol group for the color stabilization of ethylenically unsaturated monomers, particularly hydroxyalkyl(meth)acrylates, which already comprise at least one polymerization inhibitor for base stabilization or storage stabilization. Such color-stabilized and polymerization-inhibited monomers are preferably used in clearcoat and high solid paints.

Color stabilization of base-stabilized ethylenically modified unsaturated monomers

The present invention relates to a process for preparing an unsaturated carboxylic acid anhydride by reacting an unsaturated carboxylic acid and a lower aliphatic carboxylic acid anhydride in the presence of a stabilizer and catalyst that contains a metal salt of an anionic organic compound which has at least one carboxyl group.

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Mainz, Germany

Bardo Schmitt