Bayer Aktiengesellschaft

Gert Jabs

Manfred Dahm

Gunther Loew

Horst Berneth

Artur Reischl

Christian Wegner

Ulrich Nehen

Norbert Weimann

Alberto C Gonzalez-Dorner

Hanns P Muller

Wulf Von Bonin

Hans-Joachim Scholl

Artur Botta

Bernd Koglin

Artur Haus

Gunter Klug

Hildegard Schnoring

Hanns I Sachs

James M Barnes

Albert Awater

Adolf Richartz

Heinrich Alberts

Thomas Scholl

Hanns-Peter Muller

Manfred Bock

Ulrich Von Gizycki

Hubertus Psaar

Johannes Kaulen

Udo Eckstein

Wolfgang Cohnen

Werner Dietrich

Holger Heidenreich

Jan-Gerd Hansel

Martin Hoch

Johannes Niggemann

Kurt Riecke

Hans J Scholl

Gerhard-Dieter Wolf

Gunther Reichert

Gunther Baatz

Otto Mauerer

Georg Wawra

Hans-Georg Adams

Klaus Rath

Hubert Psaar

Hans-Günter Fröhlen

Gunther Klug

Process for preparing dimethyl propanephosphonate, characterized in that dimethyl phosphite is reacted with propene in the presence of a free-radical former at a reaction temperature of 60 to 95&#xb0; C., the half life of the free-radical former being 0.1 to 20 min at the reaction temperature.

Process for preparing dimethyl propanephosphonate

The invention relates to mixtures containing

Flame-resistant intumescent mixtures

Film-forming, temperature-resistant bonding and coating agents-low in flue gas which are composed of aqueous sols of silicic acid and of amine salts of acid metal phosphates, optionally mixed with amine salts of boric acid, and the in use.

Temperature-resistant bonding and coating agents low in flue gas and the

In the production of a flame resistant, halogen-free polyurethane/polyurea from a polyisocyanate and polyol, wherein to the mixture of polyisocyanate and polyol there is added an amine adduct of an acidic metal salt of the formula

Production of flame resistant, halogen-free polyurethane/polyureas

Formulations which contain a water-dispersible polymer, a metallization catalyst, if appropriate fillers, if appropriate other constituents and water are outstandingly suitable for the pretreatment of various substrate surfaces for the purpose of subsequent metallization in a currentless metallization bath.

Hydroprimer for metallising substrate surfaces

A color former for pressure- and heat-sensitive recording systems containing

Color former

Color-forming agents of the present formula ##STR1## wherein X denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy, alkylamino, dialkylamino, acylamino, aralkylamino or arylamino,

Triarylmethane color-forming agents

The invention relates to mixtures of a) at least one 3,1-benzoxazine of the formula ##STR1## and b) at least one fluorane of the formula ##STR2## wherein the radicals of the abovementioned formulae have the meaning given in the description, and their use as color-forming agents for pressure- and heat-sensitive recording materials and to such recording materials.

Mixture of 3,1-benzoxazines and fluoranes

Pressure-sensitive reactive recording material containing

Recording material

Tetraindolylheptamethine ethers and alcohols of the isomeric formulae ##STR1## and ##STR2## and dyestuffs of the formula ##STR3## in which A, B, D and E denote ##STR4## and D'.sup..sym. denotes ##STR5## and the remaining symbols have the meanings given in the description, are used in pressure- and heat-sensitive recording materials.

Tetraindolylheptamethine dyestuffs

Hydroxycarboxylic acid derivatives of the formula ##STR1## are particularly suitable for use as color developers in recording materials.

Hydroxycarboxylic acid/Unsaturated aromatic hydrocarbon resin useful as

Condensation products of benzyl chlorides and aromatic hydroxycarboxylic acids are suitable for use as color developers in pressure- or heat-sensitive recording materials.

Oligobenzylated hydroxycarboxylic acid derivative

Improved microcapsules have a capsule wall which contains a polyurethane which can be obtained by reacting an isocyanate with a polyether polyol which contains amino groups.

Microcapsules having polyurethane walls

Improved microcapsules contain at least one wall which is the reaction product of at least one isocyanate-reactive group and an aromatic isocyanate which has the formula: ##STR1## in which n=8 to 20. The microcapsules are useful in carbonless copy paper.

Microcapsules with improved polyurea walls

The invention relates to chromogenic 3,1-benzoxazines of the formula ##STR1## wherein X.sup.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, chlorine or OY.sup.1,

Chromogenic 3,1-benzoxazines

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Odenthal, Germany

Gert Jabs