Bayer Aktiengesellschaft

Bernd Peltzer

Ludwig Bottenbruch

Hansjochen Schulz-Walz

Hannes Von Harpe

Bernhard Hess

Karl Raichle

Hans-Heinrich Moretto

Walter Uerdingen

Leo Morbitzer

Ottfried Schlak

Peter Hohlein

Wolfgang Kremer

Gerhard Mennicken

Hans J Kreuder

Rolf Kuchenmeister

Theo Kempermann

Werner Clarenz

Helmut Korber

HansJochen Schulz-Walz

Johannes Beckers

Peter Kuhn

Willi Burgmer

Leonard Goerden

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

The present invention relates to a process for the production of metal effect lacquerings having improved weather-resistance by the multilayered lacquering of various substrates, using a clear layer as top coat and a lacquer containing metal pigments to form the outer layer of the multilayered lacquering which is covered by the layer of clear lacquer, characterized in that the clear lacquer used is one the main binder of which is a two-component system consisting of:

Method of producing metal effect lacquerings and sheets treated with

The instant invention relates to an aqueous silicone polyester resin system having a silicone content of at least 30% by weight, based on the solid binder, comprising a polyester resin having an acid number of from 50 to 170; a silicone precondensate with SiOH or SiOR-functionality; or a silicone-polyester-combination resin; having from 0 to 80% by weight, based on the solid binder, of an organic solvent; from 0 to 10% by weight, based on the solid binder, of an emulsion or dispersion auxiliary; a nitrogen base; and optionally at least one pigment or filler. The invention relates also to the production of the silicone polyester-resin system and to the use of the resin in aqueous lacquer materials.

Aqueous silicone-polyester resin systems, a process for their production

Molding compositions comprising terminally unsaturated polyesters, vinyl or vinylidene compounds copolymerizable therewith and elastomeric polymers have an excellent impact strength and a good heat distortion temperature, strength and rigidity.

Molding composition based on unsaturated polyesters

Molding compositions comprising a 'terminally unsaturated'polyurethane, a copolymerizable vinyl or vinylidene compound and a rubbery-elastic polymer having a glass transition temperature of between -90.degree. and +10.degree. C. can be used for the preparation of molded articles having a considerably increased impact strength and a good heat distortion temperature, strength and rigidity.

Copolymerizable molding compositions based on unsaturated polyurethanes

Highly deformable coatings which are capable of being deep drawn and which are persistent to sterilization can be obtained by using a binder which comprises a mixture of 5 - 30 parts by weight of a benzoguanamine resin and 95 - 70 parts by weight of a polyester which contains o-phthalic acid groups, dihydric and/or trihydric alcohols modified by a polysiloxane of the formula ##STR1## WHEREIN N IS FROM 2 TO 5, R.sub.1 and R.sub.4 are alkyl having 1 to 4 carbon atoms, phenyl, tolyl or benzyl and R.sub.2 and R.sub.3 are alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, phenyl, tolyl or benzyl.

Polysiloxane modified coatings

Alkyd resin lacquers which contain cellulose nitric acid esters can be prevented from 'lifting' and yellowing by the addition of bis-[hydroxyphenyl]-alkanes which are substituted in the nucleus.

Nitrocellulose alkyd resin lacquers containing

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.

Moulding compositions based on unsaturated polyesters, copolymerisable

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Krefeld, Germany

Bernd Peltzer