Abstract: A non-yellowing decorative epoxy resin aggregate binder formulation is disclosed. The formulation comprises 100 parts by weight polyepoxide, 24.8 parts by weight of a specified polyoxypropylene diamine, 26 parts by weight nonylphenol and 4 parts by weight m-xylylenediamine.Nonylphenol gives the formulation strength with flexibility and resistance to weathering with a high gloss appearance. M-xylylenediamine prevents yellowing of the clear coating.The formulation is useful as a clear coating to bind aggregate (colored pebbles or shell) to a cement surface to form a decorative coating. The formulation is distinguished by its clear, non-yellowing appearance.

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: Bis(aminoethyl) ether is reacted with an alkylene oxideto form a 2-[2-aminoethoxy-2-ethylamino]alkanol which is useful as an epoxy curative.The curative is cured with a polyepoxide to form an epoxy resin useful for such applications as decorative coatings, encapsulations, adhesives, laminates, potting compounds, etc.

Abstract: A water based epoxy resin composition is disclosed. The epoxy resin is useful as an adhesive.The composition comprises a modified diepoxide with a latent curative in aqueous medium. The diepoxide is modified by partial reaction with a polyoxyalkyleneamine containing variable amounts of ethylene oxide.

Abstract: A water based epoxy resin composition is disclosed. The epoxy resin is useful in protective coatings. The composition comprises a modified diglycidyl ether of a bisphenol A type epoxy resin with a polyamidopolyamine in aqueous medium. The diglycidyl ether of bisphenol A is modified by partial reaction with a polyoxyalkyleneamine. The polyamidopolyamine is prepared from dimer fatty acids and a polyamine.

Abstract: An epoxy resin composition is disclosed. The epoxy resin is useful as a flexible adhesive.The composition comprises a modified epoxy base resin with a curing agent. The resin is modified by partial reaction with a polyoxyalkylene monoamine. No solvent is present in the formulation.

Abstract: A novel epoxy resin curing agent comprises a polyoxyalkylenediamine biguanide salt. This novel group of compounds has an extended pot life and good adhesive properties.

Abstract: A self curing aqueous solution/dispersion comprising about 50-70 wt. % water, about 25-35 wt. % of a novel N-polymethylene substituted polyoxypropylene polyamine and about 3-9 wt. % of a curable polymer-forming component such as an epoxy-resin is described. The solution is useful for injection into permeable earth formations such as unconsolidated sands to reduce their permeability and consolidate the formation. Novel N-substituted polyamines of the formula [NaO.sub.3 S--R.sub.1 ].sub.m A wherein R.sub.1 is a C.sub.2 to C.sub.6 polymethylene group and A is a polyoxyalkylene polyamine are employed in the solution to render the epoxy-resin component adequately soluble or dispersible in the aqueous solution and to act as the curing agent for the resin.

Abstract: Compounds typified by N,N'-polyoxyalkylene bis (pyrrolidinone-3-carboxylic acid) are useful as epoxy curing accelerators. Salts thereof, including alkali metal salts, are curing agents for isocyanurate foams.

Abstract: Compounds typified by N,N'-polyoxyalkylene bis (pyrrolidinone-3-carboxylic acid) are useful as epoxy curing accelerators. Salts thereof, including alkali metal salts, are curing agents for isocyanurate foams.

Abstract: Compounds typified by N,N'-polyoxyalkylene bis(pyrrolidinone-3-carboxylic acid) are useful as epoxy curing accelerators. Salts thereof, including alkali metal salts, are curing agents for isocyanurate foams.

Abstract: A solvent resistant epoxy resin composition comprises a vicinal polyepoxide, an aromatic polyamine and a condensation product of a polyoxyalkylenediamine of about 400 molecular weight or below with at least two moles of maleic anhydride.

Abstract: A novel epoxy resin curing system comprises salicylic acid and methyliminobispropylamine (MIBPA). The resins comprise a vicinal polyepoxide and a curing amount of salicylic acid and MIBPA.

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 system 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 novel accelerator-hardener which is a condensation product of phenol, formaldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine.

Abstract: An epoxy resin having superior resistance to thermal shock comprises a vicinal polyepoxide, a curing amount of a certain bicyclic anhydride and an effective amount of a certain bicyclic anhydride and an additive comprising a polyoxyalkylenepolyamine-maleic anhydride condensation product having (thio)carbamoyl, carbamoyl or thioformyl or formyl end groups.

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