Abstract: Polyoxazoline compounds useful as crosslinkers in liquid or powder surface coating compositions which contain at lest four, for example six, oxazoline or substituted oxazoline functional groups which react with carboxyl functionality of a coreactive polymer of the coating composition are disclosed.

Abstract: Coating of a resin blend on a metal substrate by electrodeposition wherein the resin blend comprises a poly(3,4-dihydro-3-substituted-1,3-benzoxazine) and a reactive polyamine. The resin blend is dispersed in an aqueous medium containing a protonating acid and is subjected to cathodic electrophoresis to deposit the blend on a metal substrate as an adherent film which is dried and cured by the application of heat. The resin blend cures at relatively low temperatures without evolution of volatile matter.

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: A polymerizable composition comprising a poly(3,4-dihydro-3-substituted-1,3 benzoxazine) and a reactive polyamine, wherein the polyamine is at least difunctional and its reactive groups are primary or secondary amine 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 compositions are useful as potting, encapsulating and laminating resins and as surface coatings.

Abstract: The invention relates to an improved phenol-aldehyde resole resin composition for battery separators and a fibrous battery separator impregnated with the composition. Said composition comprising a resole resin with particular soluble hydroxy organic salts that do not salt out and improve the oxidation resistance of the battery separators.

Abstract: This invention relates to high efficiency stable aqueous emulsifiable resoles which contain low concentrations of free phenol and free aldehyde causing less pollution than prior art resoles. Said resoles are catalyzed with alkaline earth metal hydroxides and neutralized with oxalic acid or its acid salts providing colloidal inert insoluble oxalate salts dispersed in said resoles. Said resole and said salts being emulsifiable with protein type emulsifiers providing stable emulsions when water in excess of the water tolerance of the resole is added.

Abstract: This invention relates to stable water dilutable resoles. Said resoles are catalyzed with alkaline earth metal hydroxides and neutralized with oxalic acid or its acid salts providing inert insoluble oxalate salts dispersed in said resoles. Said salts are size controlled and stabilized by the presence of particular anionic type dispersing agents. A method for manufacture is disclosed.

Abstract: High efficiency stable aqueous resoles which contain low concentration of free phenol and free formaldehyde and cause substantially less pollution of the atmosphere than prior art resins. The resoles are prepared by a two-stage reaction which controls the molecular weight, water tolerance and the ratio of methylolated 2,2'-, 2,4'- and 4,4'-dihydroxydiphenylmethanes. Stability is promoted by inhibition of the crystallization of bis(4-hydroxy-3,5-dimethylolphenyl)methane.

Abstract: This invention relates to resoles catalyzed with alkaline earth metal hydroxides and neutralized with oxalic acid or its acid salts providing inert insoluble oxalate salts dispersed in said resoles. Said salts are size controlled and stabilized in aqueous resole resin solution having about 40 to 95 percent resole resin by weight. A method for manufacture is disclosed.

Abstract: Phenolic resin antipunk systems for thermal insulation, characterized by stability and a low level of volatile pollutants. The aqueous resin systems contain a resole component and an antipunk component. They are prepared by a three-step reaction which controls the degree of reaction, the molecular weight and the water tolerance of the resole component. Stability is promoted by inhibition of the crystallization of bis(4-hydroxy-3,5-dimethylolphenyl) methane.

Abstract: High efficiency stable aqueous emulsifiable resoles which contain low concentration of free phenol and free formaldehyde and cause substantially less pollution of the atmosphere than prior art resins. The resoles are prepared by a two-stage reaction which controls the molecular weight, water tolerance and the ratio of methylolated 2,2'-, 2,4'- and 4,4'-dihydroxydiphenylmethanes. Stability is promoted by inhibition of the crystallization of bis(4-hydroxy-3,5-dimethylolphenyl) methane.