Abstract: A N-substituted piperazine or N-substituted homopiperazine adduct with a polyepoxide is used as a co-curing agent in epoxy resin systems containing a polyepoxide and a known curing agent such as dicyandiamide, a carboxylic acid anhydride, or a dihydrazide. The preferred adducts have a ratio of epoxy groups to secondary amino groups of between 1.2:1 and 3:1. The preferred polyepoxides are polyglycidyl ethers of 4,4'-isopropylidenediphenol (bisphenol A). Suitable adducts are prepared from N-methyl-, N-(2-hydroxyethyl)-, N-octyl-, N-phenyl- and N-benzyl piperazine and N-methyl homopiperazine.

Abstract: The present invention deals with unique substituted ammonium compounds for use in cationic electrodeposition processes.

Abstract: Condensation polymers or addition polymers which contain sterically hindered polyalkylpiperidine groups are proposed as light stabilizers for plastics. The polymers concerned are relatively low-molecular polymers and a difunctional derivative of a polyalkylpiperidine is additionally used for the manufacture of these. The piperidine radical can be present in the main chain or as a side group of the polymeric stabilizer. Polymeric stabilizers of this type do not tend to migrate out of the plastic or to be removed by extraction; they are therefore very permanent in use.

Abstract: Primary diamines of the formula ##STR1## wherein R is a straight chain saturated hydrocarbon of 2 to 4 carbons, a disubstituted benzene ring, or disubstituted dibenzo methane for use as a curing agent for epoxy resins. These curing agents can be used to form epoxy resin mixtures useful in filament winding and pre-impregnated fiber molding and in formulating film adhesives, powder coatings and molding powders. The epoxy mixtures form for such uses as room temperature non-reacting, intermediate stable state which has a latent cross-linking capability.

Abstract: An improvement for producing a coating from a powder lacquers composition comprising at least one 1,2-epoxide compound having at least one 1,2-epoxide group in the molecule which compound has a lower melting point greater than 40.degree. C.

Abstract: Condensation polymers or addition polymers which contain sterically hindered polyalkylpiperidine groups are proposed as light stabilizers for plastics. The polymers concerned are relatively low-molecular polymers and a difunctional derivative of a polyalkylpiperidine is additionally used for the manufacture of these. The piperidine radical can be present in the main chain or as a side group of the polymeric stabilizer. Polymeric stabilizers of this type do not tend to migrate out of the plastic or to be removed by extraction; they are therefore very permanent in use.

Abstract: Disclosed herein are tricyclic and pentacyclic polyamines having a secondary or tertiary amine group on an amine functional substituent and at least one primary amine group on each of two amine functional substituents in the molecule. These compounds function excellently as non-visably carbonating epoxy curing agents and in addition unlike most other amines exhibit a mild amine odor.

Abstract: A threadlocking composition for mating threaded fasteners utilizes an epoxy resin system with a component adapted to effect dispersion of lubricants or other organic films on the mating threaded surfaces to thereby improve the threadlocking capabilities thereof without requiring pretreatment. The threadlocking composition comprises an epoxy resin, an amine hardener therefor and 1-25 percent of an aminoalcohol compound which is soluble in the resin/hardener system and wherein the amine and hydroxyl groups are disposed on a carbon chain and on different carbon atoms of that chain. In using the composition, it is placed upon the threads of at least one of the cooperating members which are then assembled and allowed to remain so assembled to produce curing of the epoxy composition. Pretreatment of the fastener surfaces is not required. At the end of three hours, this results in an increase in the torque required for disassembly to a level equal to at least 75 percent of the torque required for assembly.

Abstract: Water-soluble, crosslinked nitrogen-containing condensation products, the viscosity of which, in aqueous solution, increases with increasing temperature, are obtained by reacting a block copolymer of the formula: ##STR1## x is from 50 to 250, y is from 20 to 100, the ratio of x to y is from 6.5:1 to 1:15, with compounds having at least four basic NH groups in a weight ratio of from 0.8:1 to 30:1. The products are added to aqueous systems, e.g. polymer solutions and polymer dispersions, to improve the viscosity characteristics.

Abstract: A process for the preparation of pyrrolidone-5-carboxylic acid/metal salt/amine complexes by reacting 1 mol of a L-glutamic acid lower alkyl ester/metal salt complex with 1 mol of an aliphatic, cycloaliphatic or aromatic-aliphatic damine or 2 mols of an aliphatic or cycloaliphatic monoamine in a polar solvent, with the elimination of 2 mols of alcohol.The complex compounds prepared according to the invention are valuable curing agents for epoxide resins.

Abstract: Novel carboxylic acid metal salt/amine complexes of the formula(A.sup..crclbar.).sub.2 Me.sup.2+ .multidot.NH.sub.2 --R.sub.1 --NH.sub.2in which A is the anion of cyanoacetic acid, pyrrolidonecarboxylic acid, maleimidylcarboxylic acid, succinylimidylcarboxylic acid, benzenesulphonic acid or toluenesulphonic acid or of a methanephosphonic acid monoester or benzenephosphonic acid monoester, Me.sup.2+ is a divalent metal cation and R.sub.1 is a long-chain polyoxyalkylene radical, are obtained by reacting 1 mol of a carboxylic acid metal salt of the formula(A.sup..crclbar.).sub.2 Me.sup.2+with 1 mol of a diamine of the formulaH.sub.2 N--R.sub.1 --NH.sub.2in a polar organic solvent and in the temperature range of 25.degree. to 200.degree. C. to give the complex compounds of the formula.The novel complex compounds are valuable curing agents for epoxide resins and in mixtures with epoxide resins have an advantageous storage stability.

Abstract: Curable mixtures of polyepoxide compounds which contain an amine curing agent have longer curing times, and thus, in particular, good workability when used as adhesives, when N,N-dimethylethylenediamine derivatives or N,N-dimethyl-1,3-propylenediamine derivatives are used as the curing agents. The mechanical properties are also frequently improved.

Abstract: A hardening agent for an aqueous epoxy resin composition comprising a reaction product of (a) at least one polyepoxide compound, (b) at least one polyalkylene polyether polyol and (c) at least one compound selected from the group consisting of aliphatic, cycloaliphatic and heterocyclic polyamine and wherein component (c) additionally may be reacted with (d) an unsaturated compound before or after the reaction with the adduct of components (a) and (b), process for preparing said hardening agent and hardenable film forming coating compositions comprising as essential ingredients said hardening agent, at least one polyfunctional epoxy compound (a) and water.

Abstract: There is disclosed a class of N-alkylpolyamines and their use as curing agents for epoxy resins, and in particular to such polyamines having the formula R--[NH(CH.sub.2).sub.x ].sub.y --NHR' where R is an aliphatic hydrocarbon radical having from 5 through 8 carbon atoms, R' is H, R or R", x is an integer of 2 or 3 and y is an integer of 2-4. A monoepoxide adduct of the monoalkyl substituted polyamine is also disclosed wherein R" may then become an aliphatic substituent (2-14 carbon atoms) which may contain (a) an oxygen atom, (b) a hydroxyl group or (c) an aromatic substituent such as a phenyl ring.

Abstract: A novel epoxy resin curing accelerator comprises a mixture of N-aminoethylpiperazine (AEP) and triethanolamine (TEA). The resins comprise a vicinal polyepoxide, a curing agent, and an amount of AEP/TEA mixture effective for accelerating the cure of the polyepoxide. The accelerator combination is synergistic for accelerating the curing of an epoxy resin cured with an amine at ambient or elevated temperatures. The epoxy resin products are useful in protective coatings, adhesives, seamless and terrazzo flooring, castings, laminates, and in grouting, potting, encapsulating, caulking and sealing compositions.

Abstract: Chelate resins are obtained by introducing an effective amount of chelate active groups into the cured reaction product of an epoxide and a polyalkylenepolyamine. For example, an alkali metal salt of a halogenated carboxylic acid such as sodium chloroacetate, is reacted with the reaction product of triethylenetetraamine and diglycidyl ether of bisphenol A to form a chelate resin.

Abstract: Heavy reaction product after separation as by distillation of light reaction product or diadduct from a reaction mixture obtained by reaction of olefinically unsaturated nitriles with monoolefinic hydrocarbons containing an allylic hydrogen atom is hydrogenated to produce a polyamine mixture. The mixture thus produced is useful as an epoxy resin hardener yielding cured resins exhibiting low water absorption.

Abstract: Curable mixtures comprising a polyepoxide compound having on average more than one epoxide group per molecule and a 1,3-diaminopropane of the formula ##STR1## wherein R.sup.1 denotes hydrogen and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each denote an alkyl having 1 to 12 C atoms, a phenyl or a heterocyclic 5-membered or 6-membered radical, or wherein R.sup.1 and R.sup.2 together with the C atom in the .alpha.-position of the propylenediamine from a substituted or unsubstituted aliphatic 5-membered or 6-membered ring having at most 12 C atoms and R.sup.3 and R.sup.4 together with the two C atoms in the .alpha.-position and the .beta.-position of the propylenediamine form a substituted or unsubstituted aliphatic or N-heterocyclic 5-membered or 6-membered ring having at most 12 C atoms, said mixtures containing 0.5 to 1.5 equivalents of active hydrogen atoms, bonded to nitrogen, in the 1,3-diaminopropane per 1 equivalent of epoxide groups in the epoxide compound.

Abstract: A novel epoxy resin curing accelerator comprises a mixture of piperazine, N-aminoethylpiperazine (AEP) and triethanolamine (TEA). The resins comprise a vicinal polyepoxide, a curing agent, and an amount of piperazine, AEP and TEA mixture effective for accelerating the cure of the polyepoxide. The accelerator combination is synergistic for accelerating the curing of an epoxy resin cured with an amine at ambient or elevated temperatures. The epoxy resin products are useful in protective coatings, adhesives, seamless and terrazzo flooring, castings, laminates, and in grouting, potting, encapsulating, caulking and sealing compositions.

Abstract: The reaction product of an epoxide and a polyalkylenepolyamine is prepared in bead form by dispersing a blend of the epoxide and polyalkylenepolyamine in a concentrated aqueous solution of an alkali metal hydroxide and then curing the dispersed blend. For example, dispersing a blend of triethylenetetramine and diglycidyl ether of bisphenol A in an agitated aqueous solution of 50 weight percent NaOH and curing the dispersed blend produces normally solid beads which are useful as a weak base ion exchange resin.

Abstract: A novel epoxy resin curing accelerator comprises oligomeric poly(ethylenepiperazine). The resins comprise a vicinal polyepoxide, a curing agent, and an amount of oligomeric poly(ethylenepiperazine) effective for accelerating the cure of the polyepoxide.

Abstract: A process is disclosed for making a cured epoxy resin which has improved adhesion and peel strength. The cured resin is made by combining an epoxy resin with a polyether diureide having terminal ureido or monosubstituted ureido groups and having a molecular weight of from about 2000 to 3000 and an aminoalkylene derivative of a polyoxyalkylenepolyamine. The cured resin is useful, for example, for bonding metals.

Abstract: The cured reaction product of a polyalkylenepolyamine and a polyepoxide is useful as a weak base ion exchange resin. For example, the reaction of triethylenetetramine and diglycidyl ether of bisphenol A forms a weak base resin having an excellent total weak base capacity.

Abstract: A novel epoxy resin curing agent comprises oligomeric poly(ethylenepiperazine). The resins comprise a vicinal polyepoxide and a curing amount of oligomeric poly(ethylenepiperazine).

Abstract: 1,4-Diaminobutanes of the formula ##STR1## in which R.sup.1 is H or --CH.sub.3 and R.sup.2 and R.sup.3 independently of one another are each a radical of the formula ##STR2## in which A is alkyl having 1 to 3 C atoms, --OCH.sub.3, --N(CH.sub.3).sub.2, --Cl or --Br and R.sup.2 also is alkyl having 1 to 3 C atoms, are prepared according to the invention by catalytically hydrogenating succinic acid dinitrile of the formula ##STR3## in the presence of acetic anhydride and hydrolyzing the N,N'-diacetyl-1,4-diaminobutanes thus obtained to diamines of the formula I, which are valuable curing agents for epoxide resins.

Abstract: A process for the accelerated cure of an epoxy resin is disclosed. The resulting epoxy resin may be used in protective coatings, adhesives, seamless and terrazo flooring and caulking and sealing compositions. The resulting resin is also useful, for example, in casting, potting, in escapulating, grouting and patching. The process involves mixing an epoxy resin of the polyhydric phenol, polyglycidyl ether type with a curing agent comprising the reaction product of an epoxy resin with an excess of an aminoalkylene derivative of a polyoxyalkylenepolyamine.

Abstract: The adhesion properties of amine-cured epoxy resins are enhanced by addition of certain polyether diureide additives in combination with specific amine curing agents. The adhesively superior epoxy resin composition comprises a vincinal polyepoxide, a curing amount of an aminopropyl ethylenediamine curing agent, and an effective amount of a polyether diureide having terminal ureido or monosubstituted ureido groups and a molecular weight of from about 2000 to about 3000.

Abstract: An improved solution and process for depositing bright zinc coatings employing an aqueous solution containing zinc ions and an effective amount of a brightening agent comprising a bath soluble cationic alkylated condensation polymer obtained by alkylating a condensation polymer of an epihalohydrin and a heterocyclic compound containing at least 2 nitrogen atoms with a trialkyl ammonio-halo-alkyl halide salt.

Abstract: Curable compositions are prepared comprising an epoxide compound or a mixture of epoxide compounds having an average of at least two epoxide groups per molecule, and as a curing agent, a cyanamide of an organic primary amine or a mixture of cyanamides of organic primary amines having an average of more than one cyanamide moiety per molecule. Such compositions are useful in molding, casting, laminating and coating applications.

Abstract: Weldable coatings containing, an electro-conductive pigment such as zinc, an epoxy resin binder and solvent are improved by employing as the epoxy resin binder, the reaction product of a relatively low molecular weight epoxy resin such as the diglycidyl ether of bisphenol A and an amine compound having two amine hydrogen atoms such as ethanolamine.

Abstract: A curable system such as a curable adhesive type system having a relatively long pot life is disclosed. The curable system of the present invention comprises polymer containing material including at least one curable epoxy resin, at least one imidazole type catalytic curing agent for the resin and a solvent for the epoxy resin capable of suppressing or inhibiting the catalytic reaction between the resin and curing agent at least at about room temperature, the solvent being selected from methanol, ethanol and mixtures thereof.

Abstract: Room temperature curable epoxy compositions and method are disclosed. The compositions comprise resinous epoxide; a mixed amine-ketimine curing agent comprising a cyclic polyamine having at least two epoxide-reactive, aliphatic amino functional groups, a portion of the amino functional groups in the mixed curing agent being in ketimine form the remainder being in the free amine form; and water in at least about the stoichiometric proportion for hydrolyzing the ketimine groups to the free amine form. The compositions may also comprise inorganic filler such as finely divided silica and sand. The ingredients of the composition are mixed to form a sprayable composition.

Abstract: Epoxy resin compositions comprising a) a 1,2-epoxide compound containing two or more 1,2-epoxide groups per molecule, b) a cyanic acid ester having two or more cyanic ester groups per molecule, and c) an organic amine are provided.

Abstract: Curable compositions are prepared comprising a polyepoxide compound, and as a curing agent, a cyanamide of a secondary amine. The curable compositions may be applied as a one package system and they are useful as laminating, surface coating resins, sintering powders, molding resins and adhesives.

Abstract: To accelerate the curing of epoxide resins by means of aromatic polyamines there is added magnesium nitrate or a nitrate of an at least divalent metal of Group IIB, IIIB, IVB, VIB, VIIB, or VIII of the Periodic Table.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain amino terminated polyether succinimide additives. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of an amine curing agent, and an effective amount of a polyether succinimide having terminal amino groups and a molecular weight of from about 4000 to about 4500.

Abstract: Low-temperature curing epoxy compositions are described comprising (1) a saturated epoxy resin, (2) a curing amount of certain aliphatic amines and (3) an organic solvent selected from the group consisting of alcohols, glycols, and glycol ethers.

Abstract: The resins are diepoxides of the formula ##STR1## where A IS AN INTEGER OF AVERAGE VALUE FROM 1 TO 100,Each R and R.sup.1 represents a group ##STR2## OR --O--(OC).sub.c --R.sup.5 --(CO).sub.c --O--, each R.sup.2 represents --H or a group --(CH.sub.2 NH).sub.d COC(R.sup.6).dbd.CH.sub.2, at least one of the 2a groups R.sup.2 representing --(CH.sub.2 NH).sub.d COC(R.sup.6).dbd.CH.sub.2,each R.sup.3 denotes a lower alkyl group, or conjointly each pair represents a group of formula --CH.sub.2 CH.sub.2 --, --C(R.sup.7 R.sup.8)CO--, ##STR3## --CH.sub.2 CH.sub.2 CH.sub.2 --, --COCO--, --COCOCO--, or --COC(OH).sub.2 CO--,R.sup.4 represents a divalent aliphatic, cycloaliphatic, or araliphatic radical,b, c, and d are each zero or 1,R.sup.5 represents a straight or branched chain aliphatic group or, providing c is 1, it may alternatively represent a group ##STR4## R.sup.6 represents --H or a lower alkyl group, and R.sup.7 and R.sup.8 each represent --H, --CH.sub.3, or --C.sub.2 H.sub.5.

Abstract: A new composition has been found comprising an antistatic fiber selected from the group consisting of polyamide, polyester, polyurea, polyurethane, or polysulfonamide, said fiber containing between about one percent and about twelve percent by weight of at least one compound having a molecular weight above 1500 selected from the group consisting of compounds represented by the formulas: ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from nonovalent hydrocarbon radicals having 1 to 20 carbon atoms derived from aliphatic, aromatic, cycloaliphatic, aromaticaliphatic, heterocyclic hydrocarbons or --(C.sub.r H.sub.2r O).sub.m (C.sub.p H.sub.2p O).sub.q --H; R.sub.5 is at least one of the alkylene difunctional radicals having 2 to 15 carbon atoms and a radical selected from ##STR2## R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are independently selected from R.sub.1, R.sub.2, R.sub.3, R.sub.4, H or another monovalent hydrocarbon radical having 1 to 20 carbon atoms as defined for R.sub.

Abstract: Strong base, anion-exchange resins in which an imidazole compound is utilized as a source of the anion-exchange groups. The imidazole compound is utilized as or through the reaction product thereof with an epoxy compound.

Abstract: A stabilized polyolefine-based polymeric composition is disclosed characterized in that it contains as stabilizer an organic polyamine having the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are equal to or different from each other and are an alkyl group having from 1 to 4 carbon atoms;R.sub.5 is hydrogen or an alkyl group having from 1 to 4 carbon atoms;A is an alkylene group having from 2 to 10 carbon atoms;B is a divalent aliphatic, cycloaliphatic, aromatic or alkylaromatic radical, which can contain hetero atoms such as O, S, N and P either in the chain or as side substituents; andn is a whole number between 2 and 1000. The organic polyamine has an inherent viscosity of between 0.01 and 1 dl/g, and is employed in an amount equal to or less than 5% by weight. The stabilized polymeric composition may be in the form of fibers, filaments, films or other shaped articles. The organic polyamines themselves are novel, as are certain difunctional amine intermediates.

Abstract: To accelerate the curing of epoxide resins by aromatic, heterocyclic, or cycloaliphatic polyamines there are employed salts of trifluoromethanesulfonic acid.

Abstract: The disclosed curing agents or initiators have the formula ML.sub.n (O-SO.sub.2 -R.sub.f).sub.m wherein L is an imidazole, M is a metal, n is a coordination number of M, R.sub.f is a fluorinated alkyl group, and m is the valence of M. These curing agents are useful in latent curable epoxy systems. Upon heating to the cure temperature (e.g. 100.degree. - 250.degree. C.), such systems cure efficiently and with a low exotherm.