Bayer Aktiengesellschaft

Dsm N.v.

Bernhard Hess

Dieter Freitag

Ludwig Bottenbruch

Karl Raichle

Bert Brassat

Hansjochen Schulz-Walz

Karsten-Josef Idel

Walter Uerdingen

Werner Kloker

Bernd Peltzer

HansJochen Schulz-Walz

Oskar Walter

Karl-Heinz Ott

Heinrich Alberts

Jurgen Kirsch

Heinrich Heine

Joachim Franke

Klaus Kraft

Karl-Ludwig Noble

Helmut Schmid

Wolfgang Schulz-Schlitte

Klaus Zander

Uwe Arndt

Hans-Georg Gehrke

Hans-Dieter Jakob

Hannes Von Harpe

Klaus Prater

Johannes Beckers

Leonard Goerden

Heinz Eichner

Bernhard Peltzer

New, highly branched polyphosphonates which have a greatly improved flame retardant action compared with known polyphosphonates which are suitable as additives for plastics. In addition the new polyphosphonates may be incorporated in plastics as stabilizers with excellent migration properties.

Highly branched polyphosphonates based on melamine

The present invention directed to an at least substantially pore-free polyurethane prepared by reacting at least one polyisocyanate and a component containing a partial carboxylic acid ester which is the reaction product of a carboxylic acid and an at least trihydric alcohol in quantities such that at least one of the hydroxyl groups of said alcohol is not esterified.

At least substantially pore-free polyurethane molding compounds

The use of molding compositions based on unsaturated polyester resins containing specific reactive groups and of sheet metals with a specially selected coating results in sheet metal/duroplast composite elements having excellent adhesion.

Process for the production of sheet metal/duroplast composite elements

The invention relates to oligomer epoxy resins which are derived especially from diphenols or from diglycidyl ethers based on these phenols, oligomer epoxy resins containing oxazolidinone groups and based on the novel diglycidyl ethers and curable mixtures containing the novel oligomer epoxy resins, and the reaction products of the novel oligomer epoxy resins with unsaturated carboxylic acids, preferably in the presence of a vinyl monomer to give phenacrylate resins, and phenacrylate resins containing oxazolidinone groups and based on the novel diglycidyl ethers.

Oligomer epoxy resins based on cyclohexyldiphenol derivatives and

Reaction compositions of selected make-up result after curing in non-meltable polymers of high mechanical stability and low water uptake. Owing to the low birefringence of the cured products, these compositions are highly suitable for preparing carrier materials for optically and magnetically readable and/or writable data carriers.

Curable reaction compositions for producing data carriers

Polyester-based mouldings which have been hardened with little shrinkage, do not stick in the mould and therefore can be released from the mould without damage are accessible via moulding compositions containing an unsaturated polyester of defined acid number and certain end groups.

Polyester resin compositions which can be hardened with little shrinkage

Certain unsaturated polyester resins, so-called soft resins, having certain parameters are suitable for the production of hardened moldings of high elasticity.

Unsaturated polyester resins, a process for their production and their

Unsaturated polyester resins containing--as additive--polyesterurethanes having free carboxyl groups and/or terminal radically polymerizable double bonds are good starting materials for manufacturing moulded articles with outstanding properties, particularly with an excellent impact strength.

Mixtures of polyurethanes and unsaturated polyester resins

.alpha.,.beta.-Ethylenically unsaturated polyesters obtained from dicarboxylic acids and monohydric and dihydric alcohols having acid numbers of 1-50 and hydroxyl numbers of 10-80, 1,5-2,5 mols of dicarboxylic acids and 1,5-2,5 mols of monohydric alcohols having been employed, per mol of diols, in their preparation, are an excellent basis for dispersions containing powdery insoluble substances.

Dispersions of powders in unsaturated polyesters

Highly reactive unsaturated polyesters for air-drying polyester resins can be obtained by reacting .beta.,.gamma.-ethylenically unsaturated ether alcohols with a polyester precondensate.

Process for the production of polyesters for air-drying unsaturated

Organic dispersions which can be cured with little shrinkage and are based on unsaturated polyester, copolymerizable vinyl or vinilydene compounds, thermoplastic polymers which are colloidally soluble and are incompatible with the polyester resin and an ethylene/vinyl acetate copolymer with high vinyl acetate contents show a good stability.

Stable organic dispersions which can be cured with little shrinkage,

Unsaturated polyester moulding compositions hardenable with low shrinkage which are free-flowing comprise a crystalline unsaturated polyester, a copolymerizable vinyl monomer and a graft-polymerized butadiene polymer.

Free-flowing unsaturated polyester moulding compositions hardenable with

Heat-hardenable moulding compositions of:

Hardenable moulding compositions containing a thermoplastic polymer a

Polyester masses which are curable with low shrinkage containing non-crystallising unsaturated polyesters having a definite styrene compatibility, copolymerisable vinyl monomers and cellulose acetobutyrate and/or cellulose acetopropionate.

Growing community of inventors

Moers, Germany

Bernhard Hess