Abstract: The invention is an epoxy resin system useful as an adhesive for high temperature applications. The system is a combination of a diglycidyl ether a bisphenol epoxy resin(s), at amounts of 30-70% by weight, with 1-10% by weight of an epoxy novolac resin 10-30% by weight of a polyurethane toughener which preferably has the terminal isocyanate functional group blocked, 1-8% by weight of a hardener, 0.1-% by weight of a cure accelerator, preferably a latent urea cure accelerator, provides the desired balance of mechanical strength and elastic modulus. The epoxy novolac resin is characterized by at least one of the following features: (i) having a viscosity at 25 degrees C. of less than 3000 mPa-s according to ASTM D-445, (ii) an average number of epoxide groups per molecule of more than 2 but less than 3.7, and (iii) a molecular weight of less than 750 g/mol.

Abstract: The invention is an epoxy resin system useful as an adhesive for high temperature applications. The system is a combination of a diglycidyl ether a bisphenol epoxy resin(s), at amounts of 30-70% by weight, with 1-10% by weight of an epoxy novolac resin 10-30% by weight of a polyurethane toughener which preferably has the terminal isocyanate functional group blocked, 1-8% by weight of a hardener, 0.1-% by weight of a cure accelerator, preferably a latent urea cure accelerator, provides the desired balance of mechanical strength and elastic modulus. The epoxy novolac resin is characterized by at least one of the following features: (i) having a viscosity at 25 degrees C. of less than 3000 mPa-s according to ASTM D-445, (ii) an average number of epoxide groups per molecule of more than 2 but less than 3.7, and (iii) a molecular weight of less than 750 g/mol.

Abstract: Room temperature curing, two-component epoxy adhesives useful in bonding oily substrates include a resin side A and a curative side B. The resin side A includes an epoxy resin, a toughening component, a plasticizer and filler, and the curative side B includes a polyetheramine, amine-terminated butadiene rubber and a curing catalyst.

Abstract: An epoxy adhesive composition is provided that has superior wash-off resistance after pre-gelling, and may be used, for example, in manufacturing processes, for example, in the automobile industry. The composition also provides unique viscosity profile after pre-gelling to significantly reduce failure mode in subsequent processing steps. In preferred embodiments the adhesive composition comprises an epoxy type resin and a gelling agent selected from polyesterdiols and polyvinyl butyrals.

Abstract: The invention relates to resin compositions for epoxy adhesives, comprising a di-functional aromatic epoxy compound. The resin compositions and/or uncured adhesive compositions having low viscosity at low temperatures. Adhesives made therefrom have good strength and bulk properties. The invention includes methods of making and using the compositions, as well as adhesives made from the compositions.

Abstract: The invention relates to resin compositions for epoxy adhesives, comprising a di-functional aromatic epoxy compound. The resin compositions and/or uncured adhesive compositions having low viscosity at low temperatures. Adhesives made therefrom have good strength and bulk properties. The invention includes methods of making and using the compositions, as well as adhesives made from the compositions.

Abstract: An epoxy adhesive composition is provided that has superior wash-off resistance after pre-gelling, and may be used, for example, in manufacturing processes, for example, in the automobile industry. The composition also provides unique viscosity profile after pre-gelling to significantly reduce failure mode in subsequent processing steps. In preferred embodiments the adhesive composition comprises an epoxy type resin and a gelling agent selected from polyesterdiols and polyvinyl butyrals.