Badische Anilin- & Soda-fabrik Aktiengesellschaft

Badische Anilin- & Soda-fabrik Aktiengesellchaft

Karl-Heinz Fauth

Oskar Buechner

Heinz Mueller-Tamm

Friedrich Urban

Volker Gierth

Klaus Steigerwald

Heinz Gehrig

A process for coating moldings of plastics which tend to stick together at room temperature by applying solutions containing a nonadhesive resin of (1) a copolymer of at least one member of the group consisting of styrene and methylstyrene and a monoester of at least one member of the group consisting of maleic and fumaric acid or (2) a reaction product of at least one member of the group consisting of cyclohexanone and methylcyclohexanone with formaldehyde or acetaldehyde, said non-adhesive resin having a monoscope yield point or more than 80.degree.C. and a ball indentation hardness of from 310 to 800 kp/cm.sup.2 at 10 seconds and thereafter evaporating the solvent at a temperature which is lower than the softening point of the material to be coated.

Process of applying non-adhesive coatings to plastics

Production of a homogeneous mixture of plastics materials in powder form by subjecting a molten inhomogeneous mixture of two or more plastics to a maximum shear velocity of from 10.sup.4 to 10.sup.8 sec.sup.-.sup.1 for from 10.sup..sup.-2 to 10.sup..sup.-6 seconds; the pulverulent mixtures obtained are used in rotary sintering and injection molding.

Production of mixtures of plastics materials

Growing community of inventors

Frankenthal, Germany

Karl-Heinz Fauth