Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Auergesellschaft Gmbh

Schill + Seilacher Gmbh

Huntsman Textile Effects (germany) Gmbh

Inventa-fischer Gmbh & Co. Kg

Jungbunzlauer Austria Ag

Uhde Inventa-fischer Gmbh

Gerald Rafler

Rudolf Nastke

Monika Jobmann

Helmut Remde

Dieter Lubkoll

Gabriele Stadermann

Martin Kurth

Jannett Kohls

Rainer Hagen

Karl-Heinz Reichert

Gunnar Engelmann

Eckehart Schaaf

Robert Edlauer

Torsten Kulke

Ingeborg Gross

Jozef Sagala

Josef Gass

Andreas Windsperger

Jutta Rafler

Manfred Hensel

Olaf Wachsen

Frank BÖRNER

Josef Gaß

The invention relates to encapsulated rubber additives in the form of microcapsules having a polymer capsule wall and a core which comprises at least one rubber additive. The invention likewise relates to a method for the production of microcapsules of this type. The microcapsules according to the invention are used during vulcanization of natural and synthetic rubbers.

Microencapsulated rubber additives and method for production thereof

Functionalized particles having fully formed shells and cores comprising a polyurethane or polyurea matrix obtained by interfacial addition polymerisation of (i) at least one polyisocyanate derivative selected from the group of partially blocked polyisocyanates and polyisocyanates partially modified with fiber reactive groups and (ii) at least one polyamine or polyhydric alcohol, said functionalized particles being capable to chemically or physically bind to a substrate.

Functionalized particles

Method for the production of L,L-, D,D-, D,L- and meso-dilactides, comprising the polycondensation and/or polytransesterification of an L-, D- or D,L-lactic acid or of esters thereof to polyesters of higher molecular weights of the L-, D- and D,L-lactic acid (polylactic acids) and cyclizing depolymerization of the polylactic acids to dilactides, wherein the polyesters of higher molecular weights of the L-, D- and D,L-lactic acids are produced in the presence of hydrolysis-stable metal compounds as catalyst.

Method for producing cyclic diesters of L-, D- and D,L-lactic acid

The invention relates to microcapsules made of a core which contains at least one rubber additive and of a shell made of a first polymer. At least one coating made of a second polymer, which differs from the first polymer, and/or of a low molecular inorganic or organic compound, is deposited on the surface of the microcapsules as sliding or wearing layer in order to reduce the static friction.

Microcapsules used for producing rubber and method for their production

This invention relates to micro-encapsulated particles of solid matter and a quasi-continuous method for producing the same, especially those having water-insoluble characteristics or a hydrophobic form, taking into careful consideration ecologically and economically favorable ways of recycling the media used, and the resulting smallest possible amount of waste products such as waste water and polymer residues, while simultaneously ensuring that even exposed parts of the solid bodies are coated, such as crystal tips and grooves, which are insufficiently coated using standard methods due to the hydrodynamic conditions on these areas.

Solid matter micro-encapsulated by an aminoplast and method for producing the same

The invention relates to a method for producing polyesters with a reduced content of free acetaldehyde from terephthalic acid and ethylene glycol via a catalyzed polycondensation in the melt and also the use of this method. The method is based thereby on the usage of highly active polycondensation catalysts, on the deactivation of these catalysts by the addition of phosphorous-containing inhibitors and the addition of acetaldehyde-bonding substances. The entire polycondensation is thereby implemented at temperatures beneath 280&deg; C.

Method for producing polyesters with a reduced content of free acetaldehyde

A polymer-bonded granular adsorptive, absorptive, chemisorptive, or catalytically active material and a process for producing molded bodies from this material. An objective was to develop a polymer-bonded granular adsorptive, absorptive, chemisorptive, or catalytically active material which is capable of forming an open-pore and sorptive foamed body at increased temperatures while not reducing the specific surface of the active material and with a binding effect only during the mixing and processing phases, as well as a process for producing molded bodies from this material. This objective was met by mixing and processing an adsorptive, absorptive, chemisorptive, or catalytically active fine-grained material together with a finely particulate, meltable polyethylene with the addition of a binding agent having an oligocondensate basis.

Polymer-bonded material

There is described a method of manufacturing finely-particulate polymeric terials with metallized surfaces. For this purpose, firstly finely-particulate aminoplasts are synthesized from aminoplast precondensates by polycondensation, in the form of microcapsules, microspheres, hollow spheres, compact and/or porous powder, and are then in a known way sensitized, activated and finally provided with a metallized surface. The surface metallization is effected in a currentless manner and may be subsequently electrolytically reinforced.

Method of manufacturing metallized polymeric particles, and polymeric

A method of stabilization of a melt viscosity of aliphatic- and/or aromatic homo- and/or co-polyesters containing catalysts and/or initiators, involves adding a masking agent which is tropon, .alpha.-tropolon, thujaplicin, pupurogallin or mixtures thereof to a melt resulting during synthesis of polyesters or during regeneration of polyesters.

Method of stabilizing a melt of aliphatic and aromatic-aliphatic

The invention relates to aminoplastics, which are created by reacting comnds that contain amide groups with glutaric dialdehyde, and to a process for their preparation and to their use. The aminoplastic according to the invention is free of formaldehyde and can be hardened without difficulty by acidic catalysis or thermal processes. The aminoplastic is prepared by polycondensation of compounds that contain amide groups with glutaric dialdehyde in aqueous solution.

Aminoplastics

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Potsdam, Germany

Gerald Rafler