Abstract: The invention is an epoxy resin composition. Diol initiators are reacted with alkylene oxide and 1 to 5 wt % epoxy resin. The epoxy resin is added internally, along the length of the diol chain to yield a modified polyol of molecular weight 2000 to 5000. The modified polyol is subjected to reductive amination to yield a polyamine. This polyamine is mixed with an epoxy base resin and cured to product epoxy resins demonstrating improved strength and adhesion.

Abstract: A polymer concrete system has been discovered which is useful in road overlay and repair in both wet and dry conditions. The binder for this aggregate-filled system consists of a liquid epoxy resin and triethyleneglycol diamine or tetraethylene glycol diamine combined with polyoxypropylene glycol diamine curing agent. A piperazine accelerator ensures adequate strength development after short cure times at ambient temperatures.The binder-aggregate system is relative flexible, has excellent compression and flexural strength and adheres well to the substrate. The system is distinguished by its binding strength to smooth or rough surfaces whether the surfaces are wet or dry.

Abstract: A process in which a polyamine initiator is oxyalkylated to form the corresponding polyamine polyoxyalkylene glycol which is then catalytically aminated to provide a polyoxyalkylenepolyamine is disclosed. These compounds are useful as curing agents for epoxy resins and for reaction with isocyanates to manufacture articles, such as automotive body panels, by reaction injection molding.

Abstract: A polymer concrete system has been discovered which is useful in road overlay and repair. The binder for this aggregate-filled system consists of a liquid epoxy resin and triethyleneglycol diamine or tetraethylene glycol diamine curing agent. A piperazine accelerator ensures adequate strength development after short cure times at ambient temperatures.The binder-aggregate system is relatively flexible, has excellent compression and flexural strength and adheres well to the substrate. The system is distinguished by its fast cure to a compression strength of 3000 psi which will support automotive traffic.

Abstract: The invention is an epoxy resin thermoset adhesive composition. The composition comprises the cured reaction product of:(A) an epoxy base resin, and(B) a curing amount of an admixture comprising:1. an amidoamine of the formula: ##STR1## wherein: P is an iso or para phenylene moiety, and R is the polyoxypropylene moiety of the formula:H.sub.2 NCH(CH.sub.3)CH.sub.2 --[OCH.sub.2 CH(CH.sub.3)].sub.x NH--wherein: x ranges from 2 to 40, and2. an aliphatic polyetheramine, aromatic amine or mixture thereof.The compositions cured at elevated temperature cross-link to form adhesives demonstrating high peel strength and high shear strength.

Abstract: A polymer concrete system has been discovered which is useful in road overlay and repair. The binder for this aggregate-filled system consists of a liquid opoxy resin and triethyleneglycol diamine or tetraethylene glycol diamine curing agent. A piperazine accelerator ensures adequate strength development after short cure times at ambient temperatures.The binder-aggregate system is relatively flexible, has excellent compression and flexural strength and adheres well to the substrate. The system is distinguished by its fast cure to a compression strength of 3000 psi which will support automotive traffic.

Abstract: The invention is an epoxy resin thermoset adhesive composition. The composition comprises the cured reaction product of:(A) an epoxy base resin, and(B) a curing amount of an admixture comprising:1. an oxamidoamine of the formula: ##STR1## wherein: R is the polyoxypropylene moiety of the formula:H.sub.2 NCH(CH.sub.3)CH.sub.2 --[OCH.sub.2 CH(CH.sub.3)].sub.x NH--wherein: x ranges from 2 to 40, and2. an aliphatic polyetheramine, aliphatic polyamine, aromatic amine or mixture thereof.The adhesives are cured at elevated temperature. They are noted for high peel strength and good shear strength.

Abstract: Diamines of the formula:H.sub.2 N(CH(CH.sub.3)CH.sub.2 O).sub.x nC.sub.4 H.sub.8 OCH.sub.2 CH(CH.sub.3)NH.sub.2are modified with 5 to 50 wt % of a diglycidyl ether of bisphenol A to form a prepolymer. When reacted with an epxoy resin, these modified diamines impart improved properties to the cured resin compared with the unmodified amine. Improved rate of cure and greater thermal shock resistance were achieved.The cured resin products are useful for coatings, adhesives, encapsulations, laminates and composite fabrications.

Abstract: The invention is an epoxy resin adhesive composition. The composition comprises:A. An epoxy resin component comprising:1. 72 to 104 pbw of a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule,2. 8 to 16 pbw of trimethylolpropanetriacrylate3. 10 pbw of a polyoxypropylene diureide of 2000 to 3000 molecular weight; andB. A curative component comprising:1. a curing amount of triethyleneglycol diamine or tetraethyleneglycol diamine; and2. an effective cure acclerating amount of piperazine, N-aminoethylpiperazine or mixture thereof.The fast curing adhesive offers high lap shear strength and relatively high peel strength.

Abstract: This invention is directed to novel catalysts characterized as compounds of tin or zinc containing a direct metal-nitrogen bond. The novel catalysts are derived from a primary or secondary amine such as an alkyl amine, a heterocyclic amine, an aromatic amine, etc. The amine is reacted with a tin compound such as a tin chloride, a tin bromide, a tin oxide, or a tin alkoxide. Alternatively, the amine may be reacted with a zinc halide, a zinc alkoxide or an organozinc compound.In another aspect of the present invention, the novel catalysts are used to catalyze the reaction of an acrylate or methacrylate ester with an amine in order to prepare N-substituted acrylamides or methacrylamides in good yield and with high selectivity.

Abstract: This invention is directed to novel catalysts characterized as compounds of tin or zinc containing a direct metal-nitrogen bond. The novel catalysts are derived from a primary or secondary amine such as an alkyl amine, a heterocyclic amine, an aromatic amine, etc. The amine is reacted with a tin compound such as a tin chloride, a tin bromide, a tin oxide, or a tin alkoxide. Alternatively, the amine may be reacted with a zinc halide, a zinc alkoxide or an organozinc compound.In another aspect of the present invention, the novel catalysts are used to catalyze the reaction of an acrylate or methacrylate ester with an amine in order to prepare N-substituted acrylamides or methacrylamides in good yield and with high selectivity.

Abstract: Syntactic foam with improved processing characteristics is disclosed wherein a blend of coupling agents and alkylphenol alkoxylates are used to improve processibility and reduce cure time of the syntactic foam system.

Abstract: Syntactic foam with improved processing characteristics is disclosed wherein a blend of aminosilane and aminated alkylphenol alkoxylates are used to improve processibility and reduce cure time of the syntactic foam system.

Abstract: Extended 1,2-epoxy-interactive polyamine curing compositions and a method for preparing such curing compositions from a 1,2-epoxy-interactive polyamine and a cured normally solid elastomeric polyurethane wherein the 1,2-epoxy-interactive curing agent is extended by forming a solution of the cured polyurethane elastomer in the 1,2-epoxy-interactive polyamine by (a) adding comminuted cured polyurethane elastomer particles to the polyamine, (b) adding a polar organic solvent solution of cured polyurethane elastomer to the polyamine, followed by removal of the polar organic solvent or (c) adding a phenol and formaldehyde to a solution of the cured polyurethane elastomer in the 1,2-epoxy-interactive polyamine to convert the polyamine to the corresponding Mannich condensate.

Abstract: In accordance with the present invention an epoxy resin is cured with new curing agents prepared by extending an amine-type curing agent with polyethylene terephthalate.

Abstract: A method for curing 1,2-epoxy resins wherein a 1,2-epoxy resin is mixed with an effective amount of an amine curing agent comprising a solution of a normally solid cured polyurethane elastomer in a 1,2-epoxy-interactive polyamine curing agent, whereby reaction of the amino hydrogens of the said polyamine with the epoxy groups in the epoxy resin will result in curing of the epoxy resin.

Abstract: The invention is related to a catalytic method for the production of N-substituted (meth)acrylamides and is more particularly related to a catalytic method for the production of N-substituted (meth)acrylamides from (meth)acrylates and amines in the presence of an alkoxide of silicon, titanium or zirconium.

Abstract: In accordance with the present invention an epoxy resin is cured with an amine curative comprising an alkylene carbonate solution of a solid elastomeric polyurethane in admixture with an amine-type curing agent.

Abstract: A one-step process for the preparation of N-substituted (meth)acrylamides from the reaction of a (meth)acrylate ester and an amine over a catalytic amount of a metal alkoxide catalyst is described. These catalysts, such as stannous dimethoxide, lead dimethoxide, zinc dimethoxide, copper dimethoxide and bismuth tributoxide give high selectivity to the N-substituted (meth)acrylamides and little selectivity of the Michael adduct propionate ester, which would predominate in the absence of these catalysts. Also, these catalysts are less costly than organo metal catalysts commonly used.

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.