Bayer Aktiengesellschaft

Agfa Gevaert Nv

Wolff Walsrode Ag

Bayerwerk Aktiengesellschaft

Siegfried Korte

Carlhans Suling

Rolf-Volker Meyer

Christian Lindner

Theo Neukam

Wolfgang Brauer

Sergej Schapowalow

Gunter Sackmann

Heinrich Alberts

Klaus Szablikowski

Joachim Konig

Hubertus Psaar

Wolfgang Koch

Ralf Miessen

Bernd Willenberg

G&uuml;nter Sackmann

Beatrix Frauendorf

Gunter Blankenstein

Karl-Heinz Ott

Wolfgang Podszun

Karl-Erwin Piejko

Hans Rudolph

Herman J Uytterhoeven

Klaus Reinking

Roderich Raue

Harald Pielartzik

Gisbert Michels

Hans-Detlef Heinz

Ulrich Feldhues

Udo Eckstein

Aziz El Sayed

Gunter Klug

Thomas Roick

Gunter Lorenz

Uwe Zweering

Branislav Bohmer

Rudi Dauscher

Werner Karstens

Bernhard Hunke

Konrad Hable

Hans-Gunter Poersch-Panke

Karl-Heinz Feltgen

Rudiger Franck

Manfred Heckenbach

Stefan H&uuml;tte

G Unter Sackmann

Joachim K Onig

Gu/ Nter Sackmann

Dickore Karlfried

Hans-Peter Geiger

Sergej Schapowalov

Described is a process for producing segmented polyurethanes having improved processing characteristics in the melt state and an efficient spinning process based thereon to form highly elastic, fine linear density elastane yarn and filament having improved mechanical and thermal properties by using hydroxyalkyl-terminated polysiloxanes in combination with specific crosslinking-capable polyisocyanates in the reaction of long-chain high molecular weight polyhydroxy compounds with organic diisocyanates and low molecular weight diols and also optionally further auxiliary and additive substances in the melt.

Elastane threads and method for the production thereof

Whitened polymers and the use thereof in coating slips for coating substrates

A process for modifying superabsorbent polymers is disclosed. The surface of a polymer containing hydrolyzed polyacrylonitrile in the form of particulates, is modified by crosslinking in a water/alcohol reaction mixture and in the presence of silica. The resulting product features improved absorbency under load and lesser degree of gel blocking.

Modified superabsorbent polymer based on polyacrylonitrile emulsions

Super-absorbent polymer in the form of pre-formed spherical particles obtainable by alkaline hydrolysis of aqueous emulsions of crosslinked and/or un-crosslinked homopolymers and/or copolymers of acrylonitrile in water/alcohol mixtures and the use of the polymer in hygiene products, as a water-storing material in agriculture and for the sheathing of electrical cables.

Pre-formed super absorbers with high swelling capacity

Superabsorbent polymers based on partly hydrolysed homopolymers and/or copolymers of acrylonitrile which are cross-linked through the incorporation of polyfunctional monomers, wherein 30 to 80 mol-% of the nitrile groups are converted into carboxylate groups, 20 to 70 mol-% of the nitrile groups are converted into carbonamide groups and 0 mol-% to 20 mol-% of the nitrile groups are unchanged, and the said cross-linked polymers possess a swelling capacity of 700 g/g in water and of up to 60 g/g in physiological saline and a gel strength of from 20 g to 100 g, their preparation and their use.

Superabsorbent polymers from cross-linked polyacrylonitrile emulsions

A process for the production of super-absorbent polymers with a swelling capacity in water-containing liquids of up to 1,000 g/g in which aqueous emulsions of particularly high molecular weight polymers of acrylonitrile are partly hydrolyzed by reaction with aqueous solutions of alkali metal and/or alkaline earth metal hydroxides, the polymers are precipitated in powder form by addition of water-miscible organic solvents, separated off, dried and then optionally heated for a short time. The super-absorbent polymers are used as water-storing materials, for example in sanitary articles, in agriculture or in the sheathing of electrical cables.

Super-absorbent polymers

Oil- and water-repellent papers are treated on the surface or in the pulp of the papers with fluorine-containing copolymers of

Oil- and water-repellent papers, processes for their production and new

The invention relates to a process for the continuous production of polyacrylonitrile hydrolyzates and to their use as dispersion and grinding aids for pigments and fillers, such as for example kaolin, CaCO.sub.3 or gypsum.

Process for the production of low molecular weight acrylonitrile

The present invention relates to aqueous emulsions of polymers which contain 80 to 100 weight % of acrylonitrile polymerized within them, to a method for their preparation, and to their use as raw materials for acrylic and modacrylic fibres and as dyeing additives for adjusting the dyestuff affinity of cationic dyestuffs for conventional acrylic and modacrylic polymers and fibre materials produced from them.

Highly-concentrated aqueous polyacrylonitrile emulsions and a method for

Free-flowing, stable dispersions of crosslinked rubbers in the form of discrete particles having an average diameter of 0.1 to 3 .mu.m in organic liquids, containing

Graft polymer dispersions

This invention relates to new highly fluid polyarylene sulphide-(PAS)-moulding compounds, preferably polyphenylene sulphide-(PPS)-moulding compounds containing low molecular weight, liquid crystalline ester(amide)s.

Highly fluid polyarylene sulphide moulding compounds

Phosphorus containing polymers

This invention relates to a process for the radical homo-or copolymerization of acrylonitrile with one or more copolymerizable monomers under reaction conditions such that the monomers are present predominantly in a gaseous form of an adsorbed form and polymerization of the monomers, which are presumably adsorbed, takes place in the solid phase (solvent-free polymerization) and results in pulverulent PAN-(co)polymers. The process is preferably carried out in the presence of small quantities of a mediator substance such as dimethylformamide which does not alter the pulverulent consistency of the PAN-polymers but leads considerably more rapidly and with much improved yields to freshly formed polyacrylonitrile polymers.

Process for the solid phase polymerization of acrylonitrile from the

Thermoreactive recording material contains, as developer, a mixture of an acidic-modified polymer of (meth)acrylonitrile and/or methacrylonitrile and a diphenol of the formula ##STR1## in which Y is, for example, a single bond, an alkylene or alkylidene radical, gives, on thermal printing, a dye which has a reduced tendency to sublime.

Thermoreactive recording material

Growing community of inventors

Odenthal, Germany

Siegfried Korte