Henkel Kommanditgesellschaft Auf Aktien

Hans Scheer

Wolf-Dieter Beiersdorf

Werner Gruber

Peter Kuhm

Juergen Foell

Hans-Joachim Purps

Franz-Josef Schueller

Birgit Gies

Process for the collective pretreatment of steel, galvanized steel, magnesium and aluminum before bonding to rubber

The adhesive strength of an aqueous binder dispersion consisting of: a halogenated copolymer which, in addition to other components, contains an alkylation-active monoalkenylaromatic alkyl halide; polyfunctional aromatic nitroso compounds; pigments; carbon black; anti-foaming agents; emulsifiers; and other additives, used for vulcanizing rubber onto substrates which are stable under the conditions of vulcanization, is improved, and the use of blocked isocyanates is avoided. This is achieved by adding, to increase the adhesive strength, homopolymers or copolymers of vinyl acetate that are also saponified to a certain extent, as well as, optionally, other customary additives.

Aqueous vulcanizing adhesive

A heat-stable binder for use in the vulcanization of natural or synthetic rubber mixtures onto metallic or other substrates, comprising a mixture which is free from oxidizing agents that oxidize quinone dioxime and which contains chlorinated rubber, after-brominated dichloropolybutadiene, and quinone dioxime.

Rubber-to-metal binders from chlorinated rubber and brominated

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Dusseldorf, Germany

Hans Scheer