Abstract: Curable, aqueous epoxy resin composition, comprising a) an epoxy compound, b) an aminic curing agent which is an aqueous solution of a product from the reaction between i) an adduct between a polyamine and a liquid glycidyl ether which is not a glycidyl ether of a polyalkylene glycol, and ii) an epoxidized polyalkylene glycol, and c) from 0.5 to 15 wt.-%, based on the sum of the components b) and c), of a compound of the general formula (I) whereby R1=—H or —C4H9, and x=1, 2, 3 or 4, providing due to the presence of component c) an adjustable and recognizable end of pot life during application, for example coating, adhesive, as flooring, casting, tooling or encapsulating.

Abstract: Curable, aqueous epoxy resin composition, comprising a) an epoxy compound, b) an aminic curing agent which is an aqueous solution of a product from the reaction between i) an adduct between a polyamine and a liquid glycidyl ether which is not a glycidyl ether of a polyalkylene glycol, and ii) an epoxidized polyalkylene glycol, and c) from 0.5 to 15 wt.-%, based on the sum of the components b) and c), of a compound of the general formula (I) ?whereby R1?—H or —C4H9, and x=1, 2, 3 or 4, providing due to the presence of component c) an adjustable and recognizable end of pot life during application, for example coating, adhesive, as flooring, casting, tooling or encapsulating.

Abstract: Curing agent for epoxy resins, consisting of A) 1%-99% by weight of an adduct obtainable by reacting a1) a poly-ethylene polyamine having up to six nitrogens in the molecule with a2) a monoglycidyl ether, the adduct of a1) and a2) preferably being isolated by removal of the excess polyethylene polyamine, and B) 99%-1% by weight of an adduct obtainable by reacting b1) a diamine or polyamine with b2) acrylonitrile and/or C) 99%-1% by weight of a polyaminoamide, and also curable compositions further comprising an epoxide compound, and the use of these curable compositions for producing mouldings and sheetlike structures, and also for applications in the adhesives and sealants sector and for epoxy-resin mortars.

Abstract: The invention relates to a process for the manufacture of pipe from composite materials for industrial and drinking water, produced by the filament-winding method from epoxy resins and 1,7-bis-[1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]-heptane and/or 1,8-bis-[1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]octane as curing agents and commonly used reinforcing materials.

Abstract: The invention relates to a process for the fabrication of fiber-reinforced wound structures, and particularly pipe fittings, by impregnation of heat-resistant fibers with binders based on epoxy resins and 3-[1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]-heptane and/or [1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]-2,4,4-trimethyl-1-pentane as curing agent and commonly used fillers, pigments, dyes, accelerators, curing agents, wetting and flow-control agents, and reactive diluents.