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).

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: Resistance to thermal shock of certain anhydride cured epoxy resins is unexpectedly enhanced by addition of a diamide of a polyoxyalkylenepolyamine-urea condensate. This superior resistance does not appreciably compromise heat deflection properties. The resins comprise a vicinal polyepoxide, a curing amount of a certain bicyclic anhydride and an effective amount of a diamide of a polyoxyalkylenepolyamine-urea condensate having a molecular weight of from about 4000 to 4500.

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: The present invention relates to curing agents for epoxy resins. More particularly, the present invention relates to water soluble or water-dispersible curing agents which are mixed with water dispersed or water emulsified epoxy resins to form coating compositions which are essentially free of volatile organic solvents or cosolvents and which have extended pot life at room temperature, but which cure under ambient conditions in less than 24 hours.

Abstract: An adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of an amine curing agent, and an effective amount of an additive comprising a polyoxyalkylenepolyamine-maleic anhydride condensation product having thioureide, ureide or thioformamide or formamide end groups.

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 an additive comprising a polyoxyalkylenepolyamine-maleic anhydride condensation product having thioureide, ureide or thioformamide or formamide end groups.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain diamides of polyoxyalkylenepolyamine-urea condensates. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of an amine curing agent, and an effective amount of a diamide of a polyoxyalkylenepolyamine-urea condensate having a molecular weight of from 4000 to about 4500.

Abstract: The resistance to thermal shock of anhydride cured epoxy resins is improved by the addition of a bis ureide of a polyoxyalkylene polyamine additive. The heat deflection properties of the epoxy resins are not appreciably compromised by the addition of the additive. The improved epoxy resin composition comprises a vicinal polyepoxide, an effective amount of a substituted bicyclic vicinal anhydride curing agent and an effective amount of a thermal shock resistance improving additive consisting essentially of a bis ureide of a polyoxyalkylene polyamine, said additive having an average molecular weight of at least 4,000.

Abstract: The adhesive strength of amine-cured epoxy resins are improved by the addition of a bis ureide of a polyoxyalkylene polyamine additive. The improved epoxy resin composition comprises a vicinal polyepoxide, an effective amount of a polyamine curing agent, and an effective amount of an adhesive strengthening additive consisting essentially of a bis ureide of a polyoxyalkylene polyamine, said additive having an average molecular weight of at least 4,000.

Abstract: Pigment formulations and their use.The formulations contain pigments, organic solvents and from 10 to 80% by weight of a wetting agent consisting of a non-ionic organic compound which has a viscosity of from 500 to 10,000 mPa.s and has been produced by reacting an alkylated amide/formaldehyde reaction product and an epoxy resin, which may or may not be modified, in a weight ratio of from 9:1 to 1:9. They are used as additives in surface-coating binders, especially in cationic electrocoating finishes.

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 by mixing with an accelerator-hardener combination made up of (a) a liquid mixture of salicyclic acid and either iminobis(propylamine) or methyliminobis(propylamine) and (b) a polyoxyalkylenepolyamine and allowing the mixture to cure at ambient or elevated temperatures.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain di-hydroxyalkyl carbamate terminated polyether 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 dicarbamate having terminal hydroxyalkyl carbamate groups and a molecular weight of from about 2000 to about 3000.

Abstract: Resistance to thermal shock of certain anhydride cured epoxy resins is unexpectedly enhanced by addition of certain polyether diureide additives. This superior resistance does not appreciably compromise heat deflection properties. The resins comprise a vicinal polyepoxide, a curing amount of a certain bicyclic anhydride and an effective amount of a polyether diureide having terminal ureido groups and a molecular weight of from about 2,000 to about 3,000.

Abstract: Novel polyether polyureides useful in the manufacture of plastics, sealants, molds, foams and coatings. The novel composition comprises a mono- or di-substituted ureido-terminated polyoxyalkylene prepared by reacting a primary amine-terminated polyoxyalkylene containing material with suitable substituted ureido forming compounds at temperatures in the range from about 20.degree. C to about 150.degree. C in a molar ratio of about one molecule of ureido forming material for each terminal primary amino group.

Abstract: The adhesion properties of amine-cured epoxy resins are unexpectedly enhanced by addition of certain amino terminated polyether ureylene 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 ureylene having terminal amino groups and a molecular weight of from about 4000 to about 4500.

Abstract: An improved method of bonding is disclosed using an epoxy resin composition which incorporates a select group of chlorine-containing polyols.

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: A method of cationic electrodeposition on an electroconductive substrate is disclosed. The method of the invention employs as the electrocoating vehicle an aqueous dispersion of a quaternary ammonium carbonate-containing resin. Electrodeposition of the resin is accomplished without generating harmful acid from the counter ion. The carbonate counter ion is continuously evolved from the electrodeposition bath at the anode as carbon dioxide.The quaternary ammonium carbonate-containing polymers are also useful as feed resins for controlling the pH of aqueous dispersions of acidified cationic resins used in electrodeposition. Upon electrodeposition, these resins generate acid which can build up to undesirable levels in the electrodeposition bath. The quaternary ammonium carbonate-containing polymers are relatively basic and when fed into the bath react with the acid to form the corresponding quaternary ammonium salt of the acid releasing carbon dioxide.

Abstract: A film-forming liquid resin dispersion is prepared by dispersing a surface active polyester in a collidal form in water or an aqueous solution containing a small amount of a base and grafting a vinyl compound monomer and/or an acrylic or methacrylic acid ester monomer to the surface active polyester.