Abstract: A curable composition comprising a) an epoxy resin containing on average more than one epoxy group per molecule, and b) as curing agent a hybrid hardener, whereby said hardener is a blend of b1) an aminic compound selected from aliphatic, cycloaliphatic, araliphatic amines, imidazoline group-containing amidoamines based on mono- or polybasic acids, adducts of said amines or amidoamines made from glycidyl compounds, adducts of said amines or amidoamines with cyclic carbonates, whereby said aminic compound contains, on average per molecule, at least two reactive hydrogen atoms bound to nitrogen atoms, and b2) a polyphenol novolac, and wherein the polyphenol novolac is used in an amount of from 30% to 45% by weight, based on the total weight of hardener blend comprising b1) and b2), useful for rapid setting and protective coatings and adhesives in application fields like civil engineering, marine, architectural and maintenance.

Abstract: Curing agent for epoxy resins, consisting of A) 1%-99% by weight of an adduct obtainable by reacting a1) a polyethylene 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) styrene, and also curable compositions further comprising an epoxide compound, and the use of these curable compositions for producing moldings and sheetlike structures, and also for applications in the adhesives and sealants sector and for epoxy-resin mortars.

Abstract: A curable composition comprising a) an epoxy resin containing on average more than one epoxy group per molecule, and b) as curing agent a hybrid hardener, whereby said hardener is a blend of b1) an aminic compound selected from aliphatic, cycloaliphatic, araliphatic amines, imidazoline group-containing amidoamines based on mono- or polybasic acids, adducts of said amines or amidoamines made from glycidyl compounds, adducts of said amines or amidoamines with cyclic carbonates, whereby said aminic compound contains, on average per molecule, at least two reactive hydrogen atoms bound to nitrogen atoms, and b2) a polyphenol novolac, and wherein the polyphenol novolac is used in an amount of from 30% to 45% by weight, based on the total weight of hardener blend comprising b1) and b2), useful for rapid setting and protective coatings and adhesives in application fields like civil engineering, marine, architectural and maintenance.

Abstract: Special amine compositions comprising a) 30-70% by weight of a polyetherdiamine of the general formula (I) in which n is from 10 to 70, b) 3-30% by weight of a monoamine of the general formula R1—NH2, in which R1 is the straight-chain or branched, saturated or preferably unsaturated radical of a hydrocarbon having 5 to 22 carbon atoms or of a monofunctional polyetheramine having a molecular weight of up to 400 g/mol and c) 3-30% by weight of a di- or triamine and d) 5-40% by weight of an alkylphenol of the general formula (II) in which R2 is the straight-chain, branched or cyclic, saturated or unsaturated radical of a hydrocarbon having 5 to 14 carbon atoms, and curable epoxy resin compositions comprising these special amine compositions, the use of which results in thermosets which have a low degree of crosslinking, are resilient even at low temperatures and are resistant to chemical compositions, and the production of shaped articles and coatings using these curable compositions.

Abstract: Curing agent for epoxy resins, consisting of A) 1%-99% by weight of an adduct obtainable by reacting a1) a polyethylene 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) styrene, 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: 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: Special amine compositions comprising a) 30-70% by weight of a polyetherdiamine of the general formula (I) in which n is from 10 to 70, b) 3-30% by weight of a monoamine of the general formula R1—NH2, in which R1 is the straight-chain or branched, saturated or preferably unsaturated radical of a hydrocarbon having 5 to 22 carbon atoms or of a monofunctional polyetheramine having a molecular weight of up to 400 g/mol and c) 3-30% by weight of a di- or triamine and d) 5-40% by weight of an alkylphenol of the general formula (II) in which R2 is the straight-chain, branched or cyclic, saturated or unsaturated radical of a hydrocarbon having 5 to 14 carbon atoms, and curable epoxy resin compositions comprising these special amine compositions, the use of which results in thermosets which have a low degree of crosslinking, are resilient even at low temperatures and are resistant to chemical compositions, and the production of shaped articles and coatings using these curable compositions.

Abstract: The invention relates to adhesion promoters for plastisols based on polyaminoamides, characterized in that the adhesion promoter comprises not only a polyaminoamide but also at least 10% by weight, and at most 60% by weight, based on the total amount of adhesion promoter, of ethyldiglycol (ethyl Carbitol), and to a process for the production of coatings and adhesive bonds for materials, and also to plastisols in which these adhesion promoters are used concomitantly.

Abstract: The present invention relates to adducts obtainable by reaction of: A) an amine compound containing 2 or more than 2 amino groups: with B) a polyalkylene glycol monoglycidyl ether of general formula (I), in which R independently of one another (for n>1), is an —H or —CH, radical, and n=1 to 50, characterized in that the reaction ratio of components A) and B) is selected in such a way that the resultant adduct contains 2 or more than 2 amine hydrogen groups: to curable compositions based on these adducts with epoxy resins, and to the use of these curable compositions as casting resin, adhesive, matrix resin, tooling resin or as coating composition, in particular for self-flowing coatings.

Abstract: Mannich bases as curing agents for epoxy resins, characterized in that to prepare the Mannich base an isolated amine adduct is used obtainable by reacting a) an amine containing at least three active amine hydrogens with b) an epoxide compound containing on average one or more than one epoxide group in the molecule, optionally using a solvent, there being an excess of a) relative to reactive groups of components a) and b), and subsequently the adduct formed is isolated from free amines. Curable epoxy resin compositions comprising these Mannich bases are suitable owing to good obtainable surface properties in particular for coating, adhesively bonding and enhancing metallic and mineral substrates, as adhesive and sealant, and for producing mouldings and sheetlike structures.

Abstract: Method of producing pipes and pipe auxiliary pieces for pipeline systems in composite material, especially for service water and drinking water, produced by the filament winding process with binders based on epoxy resins containing on average more than one epoxide group in the molecule and on curing agents for the epoxy resins, with the use of customary auxiliaries and additives, characterized in that as binder a curable composition comprising a) a liquid epoxy resin having epoxide values of from 0.40 to 0.65 and b) an adduct of a triethylenetetraminoimidazoline with a glycidyl ether having more than one epoxide group per molecule is used.

Abstract: A curable composition comprising a) an epoxy resin having on average more than one epoxide group per molecule and b1) an alkyldipropylenetrimine of general formula (I) and/or b2) an adduct of an alkyldipropylenetrimine of general formula (I) with b3) an epoxide compound having on average at least one epoxide group per molecule in which R is hydrocarbon radical 8 to 22 carbon atoms, and the use of this composition for mineral and metallic substrates.

Abstract: The present invention relates to adducts obtainable by reaction of: A) an amine compound containing 2 or more than 2 amino groups: with B) a polyalkylene glycol monoglycidyl ether of general formula (I), in which R independently of one another (for n>1), is an —H or —CH, radical, and n=1 to 50, characterized in that the reaction ratio of components A) and B) is selected in such a way that the resultant adduct contains 2 or more than 2 amine hydrogen groups: to curable compositions based on these adducts with epoxy resins, and to the use of these curable compositions as casting resin, adhesive, matrix resin, tooling resin or as coating composition, in particular for self-flowing coatings.

Abstract: The invention relates to hydroxyl-group-containing polyether amine adducts a) that are obtainable by the reaction of polyglycidyl ethers a1), prepared from polyalkylene ether polyols having an average molecular weight Mw of from 200 to 10,000 and epichlorohydrin, with amines a2) that contain at least two reactive amine hydrogen atoms per molecule, to form polyether amines, and subsequent addition reaction of those polyether amines with epoxy compounds a3) that contain at least one epoxy group per molecule, furthermore to curable compositions comprising an epoxy resin b) and an adduct a) and also to the use of those curable compositions for the manufacture of mouldings, coverings and foamed materials.

Abstract: Curable mixtures based on epoxy resins and amine hardeners, if required additionally using solvents, water, plasticisers, UV stabilisers, colourants, pigments, fillers, which mixtures contain as accelerator at least one compound of general formula (I), wherein R1, R2, R3, R4 are each independently of one another H or an unbranched or branched alkyl radical containing 1 to 15 carbon atoms, and n is 0 to 10.

Abstract: The invention relates to curable compositions comprising a) an epoxy resin, b) an aminic curing agent and c) a curing accelerator, which comprise as curing accelerator c) at least one or more than one compound selected from c1) a compound of formula (I) wherein R1 and R2 are each independently of the other a hydrocarbon radical having from 1 to 12 carbon atoms, c2) a reaction product of a compound of formula (I) with formaldehyde, and c3) a reaction product of a compound of formula (I) with formaldehyde and a phenolic compound, in an amount of from 0.1 to 25% by weight, based on the sum of components a), b) and c), and to a process for the production of cured products using those compositions.

Abstract: The invention relates to Mannich bases prepared using alkyldipropylenetriamines and to addition compounds (adducts) of alkyldipropylenetriamines with acrylonitrile and ethylene oxide or propylene oxide, and to products obtained therefrom by the further addition of epoxy compounds having on average at least one epoxy group per molecule, and to the use of such products as hardeners for curable epoxy resin systems.

Abstract: The invention relates to curable mixtures based on epoxy resins and aminic hardeners and cure accelerators, and, optionally solvents, plasticisers, UV stabilisers, dyes, pigments and/or fillers, wherein there is used as cure accelerator from 1 to 20% by weight, based on epoxy resin, of at least one heterocyclic compound of the general formula (I) wherein R1, R2 and R3, which may be the same or different, are —(CH2)a—N—[(CH2)b—CH3]2 radicals in which a=2 or 3 and b=0 or 1.

Abstract: The invention relates to curable compositions comprising a) an epoxy resin, b) an aminic curing agent and c) a curing accelerator,

Abstract: The invention relates to Mannich bases prepared using alkyldipropylenetriamines and to addition compounds (adducts) of alkyldipropylenetriamines with acrylonitrile and ethylene oxide or propylene oxide, and to products obtained therefrom by the further addition of epoxy compounds having on average at least one epoxy group per molecule, and to the use of such products as hardeners for curable epoxy resin systems.