Continental Aktiengesellschaft

Nv Bekaert Sa

Philippe Lang

Francis Garnier

Richard Michalitsch

Bernd Kaiser

Andreas Topp

Johan Van Brabant

Gerhard E Nauer

A coated metal reinforcement element for polymeric or elastomeric materials comprises a coating of: a polymer or prepolymer compatible with and co-polymerizable, co-vulcanizable or crosslinkable with said polymeric or elastomeric material to be reinforced, and bearing functional groups; either covalently bonding to the metal surface of said reinforcement element; or forming covalent bonds with the outward directed first functional groups of a mono-or multimolecular layer of a bifunctional adhesion promotor intercalated between said metal by its second functional groups. A method for the coating includes a one step and a two step procedure.

Coated metal reinforcement element and coating materials

In a composite of vulcanizable rubber or rubber-like composition with one or more metal reinforcement elements embedded therein, the metal reinforcement element is coated with a polymer or non-cured rubber composition compatible with and co-polymerizable, co-vulcanizable or crosslinkable with said vulcanizable ruber composition to be reinforced, and additionally bearing functional groups either covalently bonding to the metal surface of said reinforcement element or forming covalent bonds with the outward directed first functional groups of a mono- or multimolecular layer of a bifunctional adhesion promoter intercalated between said metal and said coating and bound to said metal by its second functional groups. A cured rubber or rubber-like product, for instance a pneumatic tire, is obtained by vulcanization of such a composite.

Composite of a vulcanizable rubber composition and cured rubber product

The invention relates to an adhesive substance for improved adhesion between a vulcanizable polymer and a metallic reinforcing carrier. The use of an adhesive substance with the following structure is proposed in order to produce an improved adhesion between rubber and a metallic reinforcing carrier:

Rubber-to-metal adhesion promoter, metal reinforcement, composition made

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Vincennes, France

Philippe Lang