Basf Aktiengesellschaft

Ingolf Buethe

Matthias Marx

Peter Lechtken

Heinrich Hartmann

August Lehner

Wolfgang Straehle

Manfred Jacobi

Werner Trimborn

Reinhard Peters

Werner Lenz

Werner Balz

Jenoe Kovacs

Werner Loch

Hans-Uwe Schenck

Anton Hesse

Guenter Heil

Dieter Schaefer

Rudolf Bachmann

Wolfgang Jarre

Juergen Gimpel

Edwin Baumann

Gerhard Mueller

Gisbert Schleier

Hilmar Lechner

Willibald Schonleben

Acylphosphine oxide compounds of the general formula ##STR1## where R.sup.1 is alkyl, cyclohexyl, cyclopentyl, aryl which is unsubstituted or substituted by halogen, alkyl or alkoxy, or an S-containing or N-containing five-membered or six-membered heterocyclic radical,

Photocurable compositions with acylphosphine oxide photoinitiator

The invention is a process for the preparation of elastic polyurethane flexible foams having densities from approximately 25 to 60 kg/m.sup.3, and producing molded articles in closed molds at temperatures from 25.degree. to 80.degree. C., comprising reacting

Process for the preparation of elastic polyurethane flexible foams

Layer-type magnetic recording media are produced by applying a dispersion of a magnetically anisotropic material in a binder solution onto a flexible plastic base provided with an adhesion-promoting layer and then solidifying the magnetic layer, by a method in which the adhesion-promoting layer consists of a radiation-curable aqueous dispersion of a polymer.

Production of magnetic recording media

The invention relates to urea group-containing polyisocyanate mixtures which are liquid at room temperature and have an isocyanate group content of from 15 to 30 weight percent and a diphenylmethane diisocyanate content of from 55 to 90 weight percent, obtained through the reaction of

Liquid, urea group-containing polyisocyanate mixtures

The invention relates to a process for the preparation of cellular or non-cellular polyurethanes through the reaction of organic polyisocyanates with a polyether-polyester polyol component containing di- to tetrafunctional polyether-polyester polyols having hydroxyl numbers of from 10 to 200, which are themselves prepared by esterifying conventional di- to tetrafunctional polyether polyols with carboxylic acid anhydrides, preferably aromatic carboxylic acid anhydrides, in the presence of selected catalysts to form carboxylic acid half esters, and oxyalkylating the resulting carboxylic acid half esters with alkylene oxides in the presence of N-methylimidazole, triethylene diamine, triphenylphosphine or mixtures thereof with thiodialkylene glycol as catalysts.

Process for the preparation of cellular and non-cellular polyurethanes

Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups and having an isocyanate content of from 12 to 30 percent by weight are obtained by reaction of a polyoxypropylene polyoxyethylene polyol containing 5 to 30 percent by weight of oxyethylene with diphenylmethane diisocyanate-based isocyanates. These polyisocyanate mixtures are storage stable at low temperature and yield flexible polyurethane foams having improved mechanical properties.

Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures

For the preparation of elastic flexible polyurethane foams with improved breaking elongation and very good setting behavior as well as densities from 7 to 120 grams per liter, organic polyisocyanates are reacted in the presence of blowing agents, catalysts and, optionally, auxiliaries and/or additives with polyols based on polyoxyalkylene polyols having terminal oxyethylene blocks of a degree of oxyethylation of 1 to 13 and which have a content of primary hydroxyl groups at the corresponding degree of oxyethylation equal or exceeding the value of curve A in the Figure in which curve A describing the relationship of the content of primary hydroxyl groups with the degree of oxyethylation.

Process for the preparation of elastic flexible polyurethane foams

A process for coating electrically conductive objects comprising

Process for coating electrically conductive objects with polyurethane

A process for the preparation of polymerizable, primarily linear thermoplastic polyurethane elastomers with acrylate side groups comprising reacting an organic polyisocyanate with a mixture of

Process for the preparation of polymerizable polyurethane elastomers

Acylphosphine oxide compounds

Acylphosphine oxide compounds their preparation and use

A radiation-curable aqueous binder dispersion which comprises water and, dispersed therein, one or more prepolymers which contain from 0.01 to 1.0 mole of polymerizable carbon-carbon double bonds per 100 g of prepolymer and have a mean molecular weight of not less than 350 and a viscosity at 23.degree. C. of not less than 600 cp, as well as from 0.1 to 30 percent by weight, based on prepolymer, of one or more dispersants and from 0 to 20 percent by weight, based on prepolymer, of one or more photoinitiators. The binder dispersions according to the invention may be used as surface coatings for non-metallic and metallic substrates, and for bonding fiber webs.

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Mannheim, Germany

Ingolf Buethe