Bayer Aktiengesellschaft

Dsm N.v.

Bert Brassat

Hans-Josef Buysch

Werner Nielinger

Rolf-Volker Meyer

Karl H Hermann

Rolf Dhein

Rudolf Binsack

Dieter Neuray

Bernhard Hess

Heinrich Haupt

Hugo Vernaleken

Erich Eimers

Peter Mues

Christian Lindner

Hermann Hagemann

Ulrich R Grigo

Walter Uerdingen

Josef Merten

Heinrich Heine

Friedrich Fahnler

Zsolt Szentivanyi

Karl-Ludwig Noble

Rolf Brockmann

Wolfgang Richter

Christiane Oppenheimer-Stix

Oskar Walter

Kurt Schneider

Wolfgang Meyer

Helmut Vogel

Bernhard Peltzer

Heinz Eichner

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

A process for the production of polyester-polyamide block polymers by precondensing a polyamide-forming starting mixture until a relative viscosity of at least 1.2 is attained, and adding a polyester, the dicarboxylic acid units of which are derived to at least 50% from dicarboxylic acids having at least 17 carbon atoms.

Process for the production of polyester-polyamide block polymers

Products prepared by reacting isopropenyl phenols or bisphenols of the bisphenol-A type with diphenyl amine, phenothiazin or derivatives thereof in the presence of acidic catalysts are used as stabilizers for polyamides and rubbery materials.

New Stabilizers and their use for the production of stabilized

Thermoplastically polyamide moulding compositions produced from at least 70% by weight of polyamide, a long-chain polyester, polyether or hydrocarbon polyol and at most 5% by weight of a polyanhydride or polyepoxide.

High impact polyamides

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

The invention relates to a novel process for the production of duromeric aliphatic polycarbonates from cyclic aliphatic carbonic esters by ring-opening polymerization.

Process for the production of duromeric aliphatic polycarbonates

Easily flowable, impact resistant polyamide moulding composition containing from 0.5 to 10%, by weight, of polyethers preferably modified with (meth)acrylate or primary amino end groups or of polyesters preferably containing (meth)acrylate end groups.

Easily flowable, impact resistant polyamides

Unfilled, unreinforced polyamide moulding compounds are disclosed which have high rigidity and notched impact strength and are highly fluid in the molten state, containing aliphatic polycarbonate polyurethanes which are substantially unbranched in the carbon chain, prepared from polyhexamethylene carbonate diols and/or mixtures thereof with oligo- or polyalkylene glycols having 4-100 carbon atoms and 1,6-diisocyanatohexane.

Polyamides having high notched impact strength and high fluidity in the

Easy-flowing impact resistant polyamides are obtained by incorporating (poly)oxycarbonylisocyanates into the polyamides.

Easy-flowing impact-resistant polyamide modified with oxycarbonyl

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

New chlorocarbonic esters of the formula ##STR1## new polycyclic carbonic esters of the formula ##STR2## and new copolymers obtainable by copolymerization of the new polycyclic carbonic esters of the formula (III) with monocyclic carbonates.

Chlorocarbonic esters and polycyclic carbonic esters obtainable therefrom

Weather-resistant polyamides stabilized by a combination of special cyclic phosphorous acid esters and certain indole derivatives.

Weather-resistant polyamides

Stabilized polyamides containing from 0.02 to 5%, by weight of a diphenylamine compound corresponding to the following general formula: ##STR1## wherein R.sup.1 and R.sup.3, which may be the same or different, represent hydrogen, a CH.sub.3 --, C.sub.2 H.sub.5 -- or isopropyl group and R.sup.3 is in the o-, m- or p-position to the N-atom substitution;

Stabilized polyamides

Optionally reinforced moulding compositions with high impact strength comprising polyamides and graft products of (co)polymers of butadiene and grafted units of methyl(meth)acrylate.

High-impact polyamide moulding compositions

Impact improved thermoplastic mixtures of at least partly aromatic polyamides and copolymers of alkadiene with 4-6 C-atoms and acrylonitrile.

Growing community of inventors

Krefeld, Germany

Bert Brassat