Abstract: A resin coating composition comprising an epoxy resin derivative having an imidazoline ring functional group of the formula ##STR1## wherein R.sub.1 represents an alkylene group having 2 to 6 carbon atoms, each of R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represents a hydrogen atom or a methyl group, and R.sub.6 represents a residue of a carboxylic acid,as a resin binder. This resin coating composition is useful for cationic electrodeposition coating.

Abstract: This invention relates to novel polymers, i.e., poly(5-imidazolones) and a process for preparing same from the reaction of a diazlactone with a primary diamine and thereafter dehydrating the resultant polyamide product. The polymers have good thermal properties and can be used as a composite matrix with a reinforcing agent such as fiber glass.

Abstract: The present invention provides a process for hardening epoxide resin masses, wherein there is added a solution of dicyandiamide and cyanamide in a weight ratio of from 0 to 10:1 in at least one organic solvent.The present invention also provides a hardener solution for epoxide resin masses, consisting of dicyandiamide and cyanamide in a weight ratio of 0 to 10:1 and at least one organic solvent.

Abstract: A curable epoxy resin composition, comprising (1) an alicyclic epoxy resin having an average of more than one epoxy group per molecule, (2) a polybasic acid hydrazide, and (3) a latent curing agent for said epoxy resin which comprises an addition product obtained by reacting (a) a polyfunctional epoxy compound with (b) a compound having at least one functional group in the molecule selected from the group consisting of OH, SH, COOH and CONHNH.sub.2 together with a tertiary amino group, or by reacting said components (a) and (b) with (c) an organic compound which has more than two active hydrogen atoms in the molecule, said reactions occurring under conditions in which the ratio of (a) to (b) or (a) to (b) and (c) ranges from 0.8 to 2.5 equivalents of (a) per equivalent of the total active hydrogen atoms in component (b) and in components (b) and (c), the molar ratio of (c) to (b) being 0.2:1 to 1:1, and said addition product having a softening point of 60.degree. to 180.degree. C.

Abstract: Curable thermosetting resin compositions comprising at least one cycloaliphatic epoxy resin having at least two 1,2-epoxy groups per molecule, and certain aromatic diamines having three aromatic rings in the molecule are disclosed. Resin compositions comprised of, for example, bis(2,3-epoxycyclopentyl)ether and 1,3-bis(4-aminophenoxy)benzene exhibit a highly desirable balance of physical and chemical properties which renders such compositions ideally suited for use in the fabrication of wet winding composites. The resin compositions prepared in accordance with the invention have unexpectedly low viscosity, high glass transition temperatures, high tensile properties and unexpectedly low water uptake. Accordingly, the resin compositions find particular application in the preparation of composites by wet winding procedures.

Abstract: Epoxy resin compositions which on curing yield cured resins having a high glass transition temperature, high ductility, and low moisture pick-up are disclosed. To obtain such cured resins, 9,9-bis(aminophenyl)fluorenes are used as curing agents.

Abstract: A curable epoxide composition comprising an epoxide resin, a triaryl phosphite accelerator and a poly(alkylene oxide) polyamine or an amino alkyl piperazine hardener is disclosed.

Abstract: A novel polyaminoamide of the formula: ##STR1## wherein R.sub.m and R.sub.m ' are, the same or different, a hydrogen atom or a monovalent organic group and A.sub.m is a divalent organic group, or R.sub.m and/or R.sub.m ' form a cyclic group together with A.sub.m and the nitrogen atom to which they are bonded. m changes from 1 to p (where p is a positive integer) and n.sub.m is a positive integer, which can be prepared by reacting a 2,2,3,3-tetrafluorooxetane of the formula: ##STR2## with m kind(s) of diamine(s) of the formula: ##STR3## wherein m is the same as defined above.

Abstract: Tricarbocyanine polymeric dyes have formulae I and II: ##STR1## where Y can be ##STR2## --S--, --Se-- or --O--, A can be ##STR3## in which R.sup.19 can be alkyl or --Cl, and p can be 0 or 1, R.sup.6 and R.sup.7 independently can be alkyl of (C.sub.1 -C.sub.30), preferably (C.sub.1 -C.sub.18),R.sup.4 and R.sup.5 independently can be --H, C.sub.6 H.sub.5 SO.sub.2 --, or CF.sub.3 SO.sub.2 --,Z can be --SO.sub.2 --, --CH.sub.2).sub.m, or vinylene,W can be I.sup.-, Br.sup.-, Cl.sup.-, ClO.sub.4.sup.-, PECHS.sup.- (polyethylcyclohexylsulfonate), F.sub.3 CSO.sub.3.sup.- (trifluoromethanesulfonate), or other commonly used dye anions,m is an integer of 1 to 20, andn is an integer of 5 to 10,000.

Abstract: Novel 3-ring tetraglycidates having the formula ##STR1## wherein X=O, S, ##STR2## --CH.sub.2 --, C.dbd.O; Y=halogen, C.sub.1 -C.sub.4 alkyl; and p0 n=0 to 4, are disclosedEpoxy resin systems exhibiting good tensile properties and moisture sensitivity can be made by copolymerizing the tetraglycidates with a polyamine curing agent. Prepregs can be made by combining the epoxy resin systems with a fiber reinforcement. The epoxy resin system may include a co-epoxide.

Abstract: N-aminopropyl derivatives of 2,4-diamino-2-methylpentane show rapid curing when used to cure epoxy resins.

Abstract: 4,4,6-trimethylhexahydropyrimidine is partially reacted with a polyepoxide to form a room temperature Stable "B" stage epoxy resin system. This system may be stored at or near 25.degree. C. for long periods of time without further reaction. Heating of the partially cured material rapidly transforms the B-Stage product into a cross-linked material which is both temperature and chemically resistant.These properties make the product useful as preimpregnates with laminae such as cloth, paper, glass cloth and the like and for filament windings.

Abstract: N,N'-dimethyl aromatic diamines are prepared from the corresponding diprimary amines via a two step synthesis forming first the corresponding di-succinylimidomethylamine and then reductively cleaving the succinylimido group. The products are useful, e.g., as epoxy curing agents.

Abstract: The present invention provides a hardener solution for epoxide resin masses, based on dicyandiamide, wherein it contains(a) 50 to 90 parts by weight of dimethylformamide,(b) 5 to 50 parts by weight of a low boiling ketone and/or alcohol and(c) 5 to 32 parts by weight of dicyandiamide, referred to 100 parts by weight of the sum of components (a) and (b).

Abstract: This invention is directed to hydroxyl terminated azomethines formed by reacting aromatic hydroxyl aldehydes or ketone compounds with diamines. These azomethines may be reacted with epoxy resin to produce polymeric material having high glass transition temperatures.

Abstract: Polyether polyols are modified by reaction with alkylene oxides and amino alcohol-epoxy resin adducts. The adducts are the reaction product of an epoxy resin and amino alcohol of the formula: ##STR1## wherein: x ranges from 1 to 4,y ranges from 1 to 40, andR is an alkyl of from 1 to 4 carbon atoms.These polyether polyols are used to prepare flexible polyurethane foams.

Abstract: This invention is directed to hydroxyl terminated azomethines formed by reacting aromatic dialdehydes or aromatic diketones with hdyroxyl-amino compounds. These azomethines may be reacted with epoxy resin to produce polymeric material having high glass transition temperatures.

Abstract: Improved electrodepositable resin compositions comprising the reaction product of an epoxide, and, the reaction product of a ketone and an alkanolamine. The introduction of a primary monoamine into the epoxide molecule can be simultaneously done, optionally, with chain extension. The resin compositions can also be used as grind resins.

Abstract: Relatively high molecular weight epoxy resins cured with conventional curing agents are disclosed wherein the relatively high molecular weight epoxy resin is prepared in the presence of the curing agents. The resultant cured epoxy resin has an improvement in Tg or toughness and the mixture prior to reaction and curing is much easier to apply as a coating or in the preparation of castings, laminates and the like as compared to applications of mixtures of relatively high molecular weight epoxy resins and the curing agents.

Abstract: Curable thermosetting resin compositions comprising an epoxy resin having at least two 1,2-epoxy groups per molecule, an aromatic diamine hardener, and as a cure accelerator an aromatic trihydroxy compound are disclosed. The aromatic trihydroxy compound, such as for example, phloroglucinol, n-propyl gallate, or pyrogallol, improves the cure speed of the epoxy/aromatic diamine resin system, while at the same time producing cured compositions having excellent mechanical and thermal properties. The disclosed compositions find particular application in the preparation of composites by, e.g., filament winding procedures.

Abstract: An epoxy resin composition comprising an epoxy resin, either 2-vinyl-4,6-diamino-s-triazine or 2-vinyl-4,6-diamino-s-triazine/isocyanuric acid adduct, and at least one compound selected from dicyandiamide, polyvinyl-p-phenol and specific imidazole compounds. The composition is useful, for example, in inks, insulating paints and adhesives for printed circuit base boards and in copper-clad laminated boards.

Abstract: Metal complexes are obtained by reacting furfurylamine with a metal carbonyl selected from the group consisting of tungsten carbonyl, molybdenum carbonyl and chromium carbonyl. Multi-cycle reimpregnation resins are obtained by reacting one of these metal complexes with furfuryl alcohol.

Abstract: Compounds having the general formula 1 ##STR1## wherein X and Y are functional groups, preferably amino groups, are polymerized with, for example, polyfunctional epoxides to provide heat and fire resistant polymers useful for making flame and fire resistant polymer structures such as for aircraft secondary structures. The groups R in 1 are preferably alkyl and lower halo (e.g., chloro) alkyl.

Abstract: A polyether compound having ether groups and vinyl double bonds represented by formula (I) ##STR1## wherein R.sub.1 represents a residue of an organic compound having l active hydrogen atoms, n.sub.1 through n.sub.l each represents 0 or an integer of from 1 to 100, the sum of the integers represented by n.sub.1 through n.sub.l is from 1 to 100, andl represents an integer of from 1 to 100, and A represents ##STR2## and a process for production thereof; an epoxy resin represented by formula (II) ##STR3## wherein R.sub.1 and n.sub.1 through n.sub.l are defined above, and B is an oxycyclohexane unit having a substituent and is represented by formula (III) ##STR4## wherein X represents a ##STR5## --CH.dbd.CH.sub.2, or ##STR6## groups, wherein R.sub.

Abstract: Polymers of a polyfunctional epoxy compound, N,N,N',N'-tetraglycidyl-1,3-propylene bis(p-aminobenzoate), formed by reaction of such epoxy compound with aromatic polyamines. The disclosed polymers are useful as structural resins, e.g., as advanced composite matrix resins.

Abstract: Heat-curable compositions exhibiting improved thermal pot life are obtained from epoxy compositions comprising (1) a polyepoxide, (2) an aromatic or aliphatic amine and (3) a trihydrocarbyl sulfonium salt.

Abstract: Novel tetraglycidyl ethers of the formula ##STR1## wherein X is a group ##STR2## R is hydrogen or methyl, and n is an integer from 2 to 4. The novel tetraglycidyl ethers can be used in curable mixtures, together with a curing agent for epoxide resins, in particular for the protection of surfaces.

Abstract: Aromatic N-glycidylamines are prepared by treatment of an amine having at least one, and preferably two or more aromatic amino hydrogen atoms, with epichlorohydrin in the presence, as catalyst, of a di- or higher-valent metal salt of nitric or perchloric acid, or of a carboxylic or sulphonic acid substituted by fluorine, chlorine or bromine on the carbon atom alpha to the carboxylic or sulphonic acid group, and dehydrochlorinating the product. The presence of the metal salt gives a product having a higher glycidyl content and a lower viscosity than does the same reaction in the absence of such a salt.Suitable aromatic amines include aniline, phenylene diamines, phenylene diamines substituted on the aromatic ring and bis(4-aminophenyl)methane. The metal salt may be of, for example, magnesium, calcium, zinc, manganese, nickel, iron, lanthanum, vanadium, ytterbium or uranium.

Abstract: A resinous hardener system comprising the reaction product of diethyl toluene diamine and an epoxide having a functionality of at least two, the hardener being capable of incorporation into a variety of epoxy and urethane resins.

Abstract: Metal, preferably divalent copper, cobalt or nickel, phthalocyanine tetraamines are used as curing agents for epoxides. The resulting copolymers have high thermal and chemical resistance and are homogeneous. They are useful as binders for laminates, e.g. graphite cloth laminate.

Abstract: A novel process for the preparation of isomelamines of the formula I, ##STR1## which is characterized in that an N-cyano-N-(ar or cyclo)alkylcarboxylic acid amide or N-cyano-N-allylcarboxylic acid amide of the formula II or III ##STR2## is reacted with aqueous sodium hydroxide solution, potassium hydroxide solution or ammonia solution or a primary aliphatic or cycloaliphatic amine in a solvent or with a primary aliphatic alcohol in the presence of a catalytic amount of a basic compound in a temperature range from -20.degree. C. to 200.degree. C., at least 3 hydroxyl or amino group equivalents being used per 3 carboxylic acid amide group equivalents.The isomelamines prepared by the process according to the invention are valuable curing agents for epoxide resins.

Abstract: A method of making an epoxy prepolymer curing agent is disclosed. The method comprises the steps of reacting a mixture of piperidine and an epoxy resin so as to form an epoxy prepolymer adduct. The adduct is mixed with 2-ethyl-4-methylimidazole thereby forming the curing agent composition.

Abstract: Polyether polyols modified with adducts of epoxy resins, such as the diglycidyl ether of Bisphenol A, and diamines, such as polyoxypropylenediamine, are described. The resulting modified polyether polyols have a molecular weight of from about 2,000 to 7,000 and are useful in the preparation of flexible polyurethane foams. The mole ratio of epoxy equivalents to amine equivalents in the adduct ranges from about 2/1 to 10/1.

Abstract: Polyglycidyl ethers of tricyclodecane are provided which are useful as monomers in the production of cured epoxy resins. Also provided are polyallyl ethers of tricyclodecane which are novel intermediates in the preparation of the polyglycidyl ethers and a method of preparing the polyglycidyl ethers of this invention which uses the novel intermediates.

Abstract: Adducts of imidazolidine compounds, such as the reaction product of ethylene diamine with cyclohexanone, are provided with organic polyepoxides, especially with low molecular weight polyepoxides where the imidazolidine acts as a chain extender, and the adduct is reacted with an acid to protonate at least 50% of the amine groups in the adduct. These protonated adducts can be dispersed in water to form dispersion which cure with various curing agents. Aqueous electrocoating baths can be provided which electrodeposit at the cathode.

Abstract: Epoxy resins of increased flexibility and other improved properties are produced by curing a vicinal epoxy resin by combining the resin with a cured amount of a monoamide prepared by the condensation of fatty saturated or unsaturated monocarboxylic acids and polyoxyalkylene polyamines with an amine functionality of about 3 or greater. The cured epoxy resins are useful, for example, as thermal shock resistant encapsulations and adhesives.

Abstract: Liquid epoxy resin hardeners are mixtures of 2-ethyl-4-methylimidazole, ethyldimethylimidazole and/or diethylmethylimidazole isomers which can also contain other alkylimidazoles, and can be produced by distillation of the products obtained in the dehydrogenation of 2-ethyl-4-methylimidazoline.

Abstract: A method for making weather-resistant epoxy coatings using cycloaliphatic diepoxy resins is disclosed. The method comprises pre-reacting these cycloaliphatic diepoxy resins with aminoethylpiperazine and then combining the reaction product with a curing amount of polyoxyalkylene polyamine and an accelerator.

Abstract: A novel diepoxide curing agent is revealed. The curing agent comprises a mixture of an imidazole compound and a selected polyoxyalkylenepolyamine.This curative produces an epoxy resin of low viscosity with a prolonged pot life. They find particular usefulness in filament winding and pultrusion processes where they are used to fabricate articles of considerable strength.

Abstract: Curable synthetic resin mixtures, useful as surface coatings, are prepared by the reaction of solid or liquid epoxy resins with curing agents in turn prepared by the reaction of epichlorohydrin with a cycloaliphatic diprimary diamine in a molor ratio between 1:>1 to 1:2.

Abstract: The disclosure relates to a novel compound 4,4'-methylene-bis-(2-ethyl-5-methyl imidazole) represented by the structural formula ##STR1## A method is provided for producing the novel compound subjecting formaldehyde or a methylenizing agent to thermal reaction with 2-ethyl-4-methyl imidazole in the presence of a catalyst; and a method of curing an epoxy compound and a method of accelerating curing the epoxy compound and a method of inhibiting crystallization of 2-ethyl-4-methyl imidazole, respectively by use of the new compound.

Abstract: A product and the process for preparing the same to improve the moisture resistance properties of epoxidized TGMDA and DGEBA resin systems by chemically incorporating chromium (III) ions therein without impairing the mechanical strength properties of the resins.

Abstract: An aqueous dispersion comprising a poly(3,4-dihydro-3-substituted-1,3 benzoxazine) and a protonated reactive polyamine, wherein the polyamine is at least difunctional, its reactive groups being primary or secondary amine and is protonated with an inorganic or organic acid and wherein the poly(dihydrobenzoxazine) is the reaction product of about 1 equivalent of a primary amine, about 1 equivalent of a phenol and about two equivalents of formaldehyde. The dispersions can be dried and cured to provide useful surface coatings and primers. The curing step occurs without evolution of volatile matter.

Abstract: Epoxide resins are cured by heating with a hydroxyphenylurea of formula ##STR1## where R.sup.2 denotes --NH.sub.2, --NO.sub.2, --Cl, --Br, or alkyl, p denotes zero, x and y each denote zero or 1, and the sum of x+y is 1. Such hydroxyphenylureas may be used alone, as accelerators for heat-curing with other agents such as dicyandiamide, melamine, and carboxylic acid hydrazides, or may be used as the primary curing agent with promoters such as dicyandiamide, melamine, and carboxylic hydrazides.

Abstract: Polyglycidyl amines having room temperature latency when blended with curing agents and high heat distortion temperatures when cured are derived from hindered aromatic diamines and epihalohydrins. Cured products obtained from these polyglycidyl amines and curing agents are useful in structural composites, film adhesives, molding compounds and the like.

Abstract: A curable composition comprising an epoxy resin or a monoepoxide and a curing agent comprising a metal salt complex of an adduct of an imidazole and a monofunctional epoxy compound.

Abstract: The adhesion properties of amine cured epoxy resins are unexpectedly enhanced by addition of a certain combination of high and low molecular weight polyoxyalkylene polyamines. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of a combination of about 85 wt. % or more of certain polyoxyalkylene polyamines having a molecular weight of less than about 450 and 15 wt. % or less of a polyoxyalkylene polyamine of greater than two primary amine functionality and a molecular weight of about 5,000 and above.

Abstract: Hardener for epoxy resins based on(a) araliphatic or cycloaliphatic diamines with 4 amino hydrogen atoms, which are liquid at ambient temperature, or derivatives thereof with at least 3 amino hydrogen atoms,(b) optionally conventional modifiers for the polyamines according to (a) and(c) optionally conventional additives, containing(d) 0.1 to 10% by weight of primary aliphatic monoamines the alkyl groups of which contain 5 to 18 carbon atoms,and a process for hardening epoxy resins with hardeners of this kind.

Abstract: The present invention describes short chain aliphatic compounds having a geminal configuration of glycidyl groups.

Abstract: This invention is directed to polymeric compounds which contain the polyalkylpiperidine radical and at least two primary hydroxyl groups. These compounds are useful as light stabilizers for plastics and coatings. More particularly, the polymeric stabilizers is formed by chain extending polyalkylpiperidine with an excess of epoxy resin to form a diepoxide functional polymer which is then capped with hydroxy functional monomer.