Degussa Aktiengesellschaft

Evonik Roehm Gmbh

Degussa - Huls Ag

Roehm Gmbh & Co Kg

Stockhausen Gmbh & Co Kg

Agomer Gesellschaft MIT Beschrankter Haftung

Agomer Gesellschaft MIT Beschrankter

Barlocher Gesellschaftmit Beschrankter Hatfung

Evonik Rohm Gmbh

Klaus Dorn

Stephanie Schauhoff

Helmut Schwind

Joachim Knebel

Edwin Nun

Ulrich Thiele

Gerd Loehden

Dietmar Wandel

Thomas Hasskerl

Thorben Schütz

Pavel Belik

Georg Schneider

Thomas Eurich

Thorben Schuetz

Heinz-Dieter Schumann

Bruno Keller

Stefan Buchholz

Christine Maria Breiner

Wolfgang Janas

Alexander Klein

Joachim Cziollek

Mathias Hopp

Dietrich Michelchen

Peter Kempf

Bernd Frischkemuth

Dirk Hauch

Stefan Forster

Heiko Wolf

Hartmut Alt

Mauren Traebing

Natascha Schickel

The present invention relates to the stabilization of (meth)acrylic monomers against premature polymerization during synthesis, storage and transport. The term '(meth)acrylic monomers' is understood to mean derivatives both of methacrylic acid and of acrylic acid.

Stabilized (meth)acrylic monomers

There are provided plastisols based on poly(meth)acrylate which have a mean molecular weight in excess of 3,500,000 which have superior shelf life, tensile strength extensibility and viscosity as well as gel formation and filmforming propeties to those known heretofore. These plastisols are formed by emulsion polymerization.

Poly(meth)acrylate plastisols

Polyoxymethylene moulding compositions with improved heat stability and stability against discoloration

The aging of swellable starch maleates is reduced by reacting with one or more singly and/or multiply functional nucleophiles as in a Michael condensation reaction. Mixtures of mercaptoethanol and 1,2-bis-(2-mercaptoethoxy)-ethane or mixtures of sodium bisulfite and pentaerythrite-tetrakis-(2-mercaptoacetate) are preferred. The decrease of the retention capacity [SRV] in the reaction products after 100 days is preferably &lt;10%. The products find use as biodegradable, non-aging superabsorbers.

Method of producing swellable, non-aging starch maleates, biologically

There are provided foamable, foamable polyvinyl halide resin masses containing: A) 1 to 25 parts relative to 100 parts of polyvinyl halide, of a polymerizate obtainable through the emulsion polymerization of i) up to 20 to not more than 75 parts of methylmethacrylate, ii) 25 to 80 parts of one or more C.sub.2 -C.sub.18 alkylmethacrylates, iii) 0 to 5 parts of one or more vinyl unsaturated monomers copolymerizable with (i) and/or (ii, wherein the components (i)-(iii) together yield 100 parts and are polymerized with up to a further 100 parts of usual additives for emulsion polymerization, wherein the emulsion polymerizate is single stepped and has a viscosity number of &gt;700 cm.sup.3 /g and wherein copolymers are excluded which contain iv) MMA per se, or less than 20 or more than 75 parts of MMA together with either v) one or more acrylic acid esters, and/or vi) ethyl methacrylate, n-butyl-methacrylate, or ethylhexyl methacrylate. The resin mass further includes: B) 0.1-10 parts based on 100 parts of the polyvinyl halide of one or more foaming materials, C) 0-100 parts based on 100 parts polyvinyl halide of the usual additives. This polyvinyl halide resin mass, after foaming, yields a resin mass which, as well as of good surface properties, has a foam density of &lt;0.7 g/cm.sup.3.

Foamable polyvinyl halogenated resin mass, use of polymerizates thereof

Process for the production of preoriented filaments from polyester-based polymer mixtures by spinning the polymer mixtures with a draw-off speed v of at least 2500 m/min, a second amorphous, thermoplastically processable copolymer having a glass transition temperature of more than 100.degree. C. being added to the polyester, wherein the ratio of the melt viscosity of the copolymer to the melt viscosity of the polyester is 1:1 to 10:1, in that the amount of copolymer added to the polyester is at least 0.05 wt. %, in that the maximum amount M of the copolymer added to the polyester depends on the draw-off speed v, and in that ##EQU1##

Process for processing polymer mixtures to filaments

The invention relates to copolymers for producing cast glass or thermally dimensionally stable formed materials.

Copolymers useful for producing cast glass and thermally dimensionally

A biodegradable, swellable starch ester, containing more than 50% by weight of water-insoluble components and having a retention capacity of &gt;500% for 0.9% (by weight) aqueous NaCl solution, and methods of its production and use.

Swellable starch ester and methods of its production and use

A polyoxymethylene composition, polyoxymethylene parts, and a process for the production of polyoxymethylene. The polyoxymethylene composition contains one or more polyoxymethylene species, an aqueous anionic polyurethane dispersion, phenolic antioxidant(s), and optionally, colorant, filler, and conventional additives. The composition exhibits improved resistance to non-ferrous metal corrosion.

Polyoxymethylene with improved resistance to zinc and/or copper ions,

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Hanau, Germany

Klaus Dorn