Abstract: The invention relates to novolac alkylphenol resins having a low level of free alkylphenol, a method for the production thereof, and the use thereof as tackifying resins and reinforcing resins for rubbers. The resins may be used advantageously in the production of tires.

Abstract: The present invention relates to novel novolac resins obtained by coupling at least one aromatic compound (A) comprising at least two hydroxyl groups and at least one aldehyde (B) in the presence of an acid catalyst and in the presence of water and/or an organic solvent, followed by a step of alkylating the coupling resin thus obtained with at least one unconjugated diene (C), preferably containing no indene. These novolac resins are advantageously used in vulcanized and crosslinked elastomeric compositions since their viscosity, which is lower than that of the resins of the prior art, allows them to be handled easily. They are also used as adhesion promoters for improving the adhesion of rubber to reinforcing materials such as organic fibres made in particular of rayon, polyesters, polyamides or aramids, and metal cords made of steel, in particular brass steel or galvanized steel.

Abstract: The invention is related to a hydrocarbylphenol-formaldehyde linear novolak resin modified with a vinyl monomer. A modified, hydrocarbylphenol-formaldehyde linear novolak resin of the invention is prepared by reacting a hydrocarbyl phenol-formaldehyde linear novolak resin with a vinyl monomer in the presence of an acid catalyst. The invention also relates to a rubber compositions with improved tack comprising a rubber or mixture of rubbers, and the modified, hydrocarbylphenol-formaldehyde linear novolak resin.

Abstract: The present invention relates to novolak resins prepared with, inter alia, one or more alkylphenols. The invention further relates to compositions comprising the novolak resins, such as vulcanizable rubber compositions, and to products obtained therewith.

Abstract: The subject of the present invention is the use of a resin composition (A) comprising A1) at least one unsaturated polyester resin, A2) at least one vinyl ether having a viscosity of less than 4000 mPa·s at 25° C., A3) if desired, at least one further polymer and/or oligomer, A4) if desired, at least one curing accelerator, A5) if desired, at least one ethylenically unsaturated reactive diluent, and A6) if desired, further customary additives, as impregnating, casting and coating compositions for electrical and/or electronic components and for carrier materials for sheetlike insulating materials. The present invention additionally relates to coating compositions suitable for this purpose which can be cured with low emissions.

Abstract: A coating for enamelled wire having a base coat and a top coat, and enamelled wire having such coating. The top coat contains a binder, titanium dioxide and pyrogenic silica.

Abstract: The invention relates to wire enamels comprising as binders polyesterimide and/or polyamideimide, the binders comprising as monomeric building blocks polyoxyalkylenediamine having terminal amino groups. The polyoxyalkylenediamines are preferably selected from the group polyoxyethylenediamine, polyoxypropylenediamine and polyoxyethylenepropylenediamine. The invention also encompasses the use of the novel wire enamels for coating copper wires, especially thick round wires or profiled wires.

Abstract: The invention relates to a process for preparing hydroxyl- and carboxyl-containing polyesterimide resins, comprising as monomeric components: (A) imide-forming compounds having at least two primary amino groups and/or at least two isocyanate groups or imide-forming compounds having at least one primary amino group and/or at least one isocyanate group and at least one further functional group selected from hydroxyl, carboxyl and/or carboxylic anhydride, (B) polycarboxylic acids and/or their anhydrides and/or their esters and (C) polyols, characterized in that (I) component (A) is reacted with part of component (B) to form a polyimide, (II) the polyimide obtained in accordance with stage (I) is reacted with component (C) to form a polyesterimide, and finally (III) the polyesterimide obtained in accordance with stage (II) is reacted with the remaining part of component (B) to form the Also embraced by the invention is the use of the polyesterimides prepared by the process according to the invention as bi

Abstract: The invention comprises a process for impregnating components with polymerizable impregnants which are liquid at room temperature or can be liquefied by heating and are cured by combined use of heat and high-energy radiation, wherein the components are impregnated at ambient temperature or in a preheated state and, after impregnation, are heated in the impregnant until partial gelation occurs, are treated with high-energy radiation before full curing and are then fully cured by thermal means.