Rutgerswerke Aktiengesellschaft

A. Raymond & Cie

Bakelite Ag

Akzo Nobel Faser Ag

Rutgerswerke Atkiengesellschaft Ag

Axel Bottcher

Manfred Doring

Jurgen Zehrfeld

Manfred Fedtke

Bernd Nestler

Klaus Dathe

Egon Uhlig

Achim G Fels

Hans-Jurgen Lesser

Rolf Herzog

Michael Mohr

Willi Roll

Klaus-Peter Liebetanz

Holger Dey

Ullrich Grundke

Peter Fricke

Rudolf Hinterwaldner

Walter Napp

Ulrich Stieber

The invention relates to a process for the preparation of resols by reacting phenolic compounds with aldehydes with catalysis by metal salts whose cation can easily be precipitated as low-solubility salts in industrial processes. In this process, a dispersant is added to the reaction mixture comprising phenolic compound, aldehyde and metal salt before, during or after the condensation reaction, and a complexing agent is admixed after the condensation reaction is complete and after the dispersant has been admixed. The resultant resins are transparent even after neutralization using sulphuric acid.

Method for producing resols

One-component thermosetting coating composition

Neutral metal complex salts with additional ligands acting as bases and a process for their preparation and their use as latent polymerization catalysts for the production of pre-cured products which can be further cured without another curing catalyst.

Neutral metal complex salts

A polymerizable mixture comprising 100 parts by weight of at least one epoxy compound and 0.01 to 50 parts by weight of a metal complex compound of the formula

Polymerizable epoxide mixtures and process

An epoxy resin system comprising a) at least one nitrogen containing epoxy compound having at least two epoxy groups, b) at least one phosphorus compound with at least one epoxy group, c) at least one metallic complex compound as curing agent and d) optionally filler and additive substances free of halogenated compounds and having a low degree of inflammability.

Epoxy resin systems containing glycidylated aromatic amines, phosphorus

A process for the preparation of complex salts with additional coordinated ligands comprising reacting with through mixing at 20.degree. to 200.degree. C. a complex-forming metal salt of a metal of the second and third main groups of the Periodic Table and the subgroups thereof with a stoichiometric amount of at least one member of the group consisting of a chelating ligand and a Lewis base in the absence of a solvent according to the equation:

Metal complexes with a high coordination number

A composite material comprising a fabric of high-modulus fiber material and optionally a portion of other synthetic fiber material and a binder, the binder layers being essentially disposed only between fabric plies, the binder being a resol modified with polyvinyl butyral, the resol content being 4 to 20% by weight and the polyvinyl butyral content being 75 to 95% by weight of the binder suitable for projectile inhibiting laminates for the manufacture of protective helmets and armor against projectiles.

Composite materials

Polymerizable epoxide mixtures and process using Lewis base complexes

Growing community of inventors

Wesel, Germany

Axel Bottcher