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Rainer Schoenfeld, Duesseldorf DE

Rainer Schoenfeld, Duesseldorf DE

Patent application numberDescriptionPublished
20080196831METHOD OF ADHESIVELY BONDING A FIRST COMPONENT TO A SECOND COMPONENT - A method of adhesively bonding a first component to a second component, which comprises a peripheral zone with which the first component is adhesively bonded in overlapping manner is provided. In such method, a) at least one body of hot-melt adhesive is adhesively bonded to the first component in such a way that it comes into contact with the peripheral zone upon adhesive bonding of the first component to the second component, b) the peripheral zone is heated locally at at least one point, at which the applied body of hot-melt adhesive comes into contact with the peripheral zone upon adhesive bonding of the first component, indirectly or directly by electromagnetic induction to a temperature above the melting temperature of the hot-melt adhesive, c) the first component is brought into contact with the peripheral zone of the second component in such a way that the body of the hot-melt adhesive comes into contact with the point of the peripheral zone heated in step b), such that the hot-melt adhesive melts at the point of contact with the peripheral zone and bonds the first component to the peripheral zone of the second component after cooling. In addition, prior to step b) or after step c) a reactive adhesive is introduced in such a way between the first and the second component that it bonds the first component to the peripheral zone of the second component, the reactive adhesive being cured or allowed to cure.08-21-2008
20090288770SURFACE-PROMOTED CURE OF ONE-PART CATIONICALLY CURABLE COMPOSITIONS - The present invention relates to cationically curable compositions for curing on a surface comprising a cationically curable component, and an initiator component capable of initiating cure of the cationically curable component. The initiator comprises at least one metal salt, which is chosen so that it is reduced at the surface, and where the standard reduction potential of the initiator component is greater than the standard reduction potential of the surface, and where when the composition is placed in contact with the surface, the metal salt of the initiator component of the composition is reduced at the surface, thereby initiating cure of the cationically curable component of the composition. No catalytic component is required in the composition for efficient cure.11-26-2009
20090291288MOLDED PARTS FROM HOT MELT ADHESIVES - The invention relates to a molded part for bonding to metal or plastic substrates for use as a fastening element. Said molded part comprises a hot melt adhesive, said hot melt adhesive being based on polyamide, polyolefins, polyesters, polyacrylates or polystyrene. The molded part according to the invention is characterized in that the hot melt adhesive has a softening point between 100° and 250° C., a tensile stress at yield of between 1 and 35 MPa and the molded part consists entirely of the hot melt adhesive. The invention also relates to a method for bonding molded parts from hot melt adhesives to substrates by way of inductive heating.11-26-2009
20100099818BENZOXAZINE-FORMULATIONS WITH REDUCED OUTGASSING BEHAVIOUR - Polymerizable combinations, comprising at least one first component selected from the group of benzoxazine monomers and at least one second component selected from the group of aromatic esters are described. Furtheron the use of aromatic esters as additives to benzoxazine monomers as well as methods of coating a device by heating the above mentioned combination, and a device, coated by that way is explained.04-22-2010
20100144964BENZOXAZINE-CONTAINING FORMULATIONS POLYMERIZABLE/CURABLE AT LOW TEMPERATURE - The present invention relates to a catalyst, which is an organic component with electron withdrawing substituents and to compositions with such catalyst and at least one benzoxazine component, and the use of such compositions in adhesives, sealants and coatings.06-10-2010
20100204385CURABLE BENZOXAZINE-BASED COMPOSITIONS, THEIR PREPARATION AND CURED PRODUCTS THEREOF - The invention relates to a curable composition comprising: at least one benzoxazine and at least one toughening additive which can be bound to the at least one benzoxazine in the curing process, characterized in that the toughening additive is distributed in the cured composition in form of discrete domains, and that at least 50% of the discrete domains related to the total amount of discrete domains have a maximum length in any direction of space in the range of 10 nm to 500 nm as determined by transmission electron microscopy (TEM).08-12-2010
20100204400CURABLE COMPOSITIONS CONTAINING ISOCYANATE-BASED TOUGHENERS - The present invention relates to curable compositions comprising (a) N-arylated benzoxazines, and (b) a prepolymer produced from a diisocyanate having two isocyanate groups with different reactivity. The compositions are particularly suitable in the production of adhesives and sealants, prepregs and towpreg.08-12-2010
20100210787CURABLE BENZOXAZINE MACROMONOMERS, THEIR PREPARATION AND CURED PRODUCTS - The invention relates to a curable benzoxazine macromonomer containing at least 3 benzoxazine rings and at least one aliphatic, heteroaliphatic, araliphatic, hetereoaraliphatic, aromatic or heteroaromatic fragment, the fragment comprising a shortest atom chain containing at least 40 consecutive atoms between two benzoxazine nitrogen atoms or between two benzoxazine oxygen atoms, and said atom chain must not include any oxazine ring atoms (“soft fragment”). The invention further relates to cured products made thereof and a method or producing the same.08-19-2010
20100234516NOVEL ADDUCTS AND CURABLE COMPOSITIONS USING SAME - The present invention relates to novel adducts useful for improving the toughness and curable compositions using such toughening adducts. In a particular aspect, the present invention relates to novel toughening adducts and curable compositions having improved fracture toughness using those toughening adducts.09-16-2010
20110105680Polymerizable Composition - The present invention relates to a polymerizable composition comprising, as a component A, at least one silicon-organic compound having at least two ≡Si—H groups that are reactive in the hydrosilylation reaction and, as a component B, at least one benzoxazine compound having at least two unsaturated carbon-carbon bonds that are reactive in the hydrosilylation reaction with the component A. Additional objects of the present invention include adhesives, sealants or coatings containing the polymerizable composition according to the invention, and the polymerization products of said components.05-05-2011
20110112235POLYMERIZABLE COMPOSITION - The present invention relates to a polymerizable composition comprising at least one polymerizable benzoxazine compound and core-shell particles, where the core of the core-shell particles comprises at least one (co)polymer of at least one ethylenically unsaturated monomer (A) and the shell of the core-shell particles comprises at least one crosslinked (co)polymer of at least one ethylenically unsaturated monomer (B), where the ethylenically unsaturated monomer (B) encompasses at least one aromatic group. The present invention further relates to adhesives, sealants or coatings, which encompass the polymerizable composition of the invention, and also to the polymerization products of this composition. The present invention further relates to a process for the production of the polymerizable composition of the invention.05-12-2011

Patent applications by Rainer Schoenfeld, Duesseldorf DE