Henkel Ag & Company, Kgaa

Martin Hornung

Emilie Barriau

Martin Renkel

Rainer Schoenfeld

Andreas Ferencz

Michael J Flener

Gregory Krueger

Konrad Becker

Josef Hudina

Wolfgang Weimar

Melanie Hagenbucher

Gregory A Krueger

Christian Beirich

Damien Fourcade

Rainer SCHÖNFELD

Ryzhova Anna

The invention is directed to a photocurable epoxy resin composition that is tougher and more flexible and contains 30 to 90 wt % of at least one aromatic epoxy resin; 2 to 30 wt % of at least one core-shell rubber (CSR); up to 20 wt % of at least one flexibilizer comprising reactive functional groups selected from among epoxy groups, carboxylate groups, amino groups and/or hydroxyl groups; and 1 to 4 wt % of at least one cationic photoinitiator. Also disclosed are the use of said composition for sealing and/or coating materials as well as corresponding coating/sealing processes.

Photocurable epoxy resin systems

A fiber composite material obtainable by (a) mixing the components of a multi-component agent immediately before use, wherein component A of the multi-component agent contains at least one compound having two or more isocyanate groups, component B of the multi-component agent contains at least one compound which has at least two reactive groups selected from hydroxyl groups, thiol groups, primary amino groups and secondary amino groups and is simultaneously free from epoxy groups, and at least one of the components of the multi-component agent contains at least one epoxide prepolymer, (b) introducing the resulting application preparation into a mold in which fibers and optionally further additives are present, the resulting mixture containing at least one latent hardener for epoxide prepolymers, (c) pre-curing the resulting mixture at a temperature from 5&#xb0; C. to 90&#xb0; C., and (d) then finally curing the pre-cured fiber composite material at temperatures from 100&#xb0; C. to 240&#xb0; C., wherein the fiber composite material being removed from the mold after step (c) or step (d).

Hybrid matrix for fiber composite materials

A method of manufacturing a composite insert includes forming a polymer mold from a polymer sheet which may have a glass transition temperature of 70 to 160&#xb0; C., the polymer mold either includes a cavity or may form a cavity disposed between the polymer mold and the carrier. The method proceeds by depositing a liquid reactive composite insert composition, which may be a two-component composition including a first part comprised of an isocyanate-epoxy blend and a second part comprised of an alcohol-epoxy blend, into the cavity under low pressure conditions of 0-10 bar and low temperature conditions of 15-100&#xb0; C. The composition is then allowed to become dimensionally stable either within the polymer mold or between the polymer mold and the carrier.

Method of manufacturing a composite insert by molding

The present application provides agents for producing an impact-modified epoxy adhesive encompassing at least two components A and B packaged separately from each other, wherein (a) component A contains at least one compound having two or more isocyanate groups together with one or more further additives, (b) component B contains at least one compound which has at least two reactive groups selected from hydroxyl groups, thiol groups, primary amino groups and secondary amino groups and is simultaneously free from epoxy groups, together with one or more further additives, (c) at least one of components A and/or B contains at least one epoxide prepolymer as an additive, (d) at least one of components A and/or B contains at least one latent hardener for epoxide prepolymers as an additive, and (e) components A and B contain no blowing agent that is capable of being heat activated.

Impact-modified adhesives

A two-component premix for preparing a heat-expandable and heat-curable epoxy-based material, comprises an isocyanate, a diol or polyol, an epoxy prepolymer, a heat-activatable hardener for epoxy prepolymers, and a heat-activatable blowing agent.

Premix and method for producing a thermally expandable and curable epoxy-based compound

Growing community of inventors

Bammental, Germany

Martin Hornung