Texaco Inc.

Texaco Chemical Company

Huntsman Petrochemical Corporation

Kathy B Sellstrom

Harold G Waddill

Edward E McEntire

Michael Cuscurida

George P Speranza

Edward C Nieh

John F Knifton

Robert L Zimmerman

John M Larkin

Terry L Renken

Robert A Grigsby, Jr

David C Alexander

David R Livingston

An epoxy resin composition comprises the cured reaction product of an epoxy base resin and a curing agent mixture. The curing agent mixture comprises an amino curative and a polyoxyalkylene polycarbonate. Liquid epoxy base resins cured with polyoxyalkyleneamines in the presence of polyoxyalkylene polycarbonates were harder and displayed improved tensile modulus, flexural strength and flexural modulus.

Epoxy curing agents

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.

Epoxy resin composition containing aminated epoxy resin-alkylene oxide

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.

Polymer concrete composition for cementitious road repair and overlay on

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.

Polyamines by amination of polyamino initiated polyoxyalkylene glycols

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.

Polymer concrete composition for cementitious road repair and overlay

The invention is an epoxy resin thermoset adhesive composition. The composition comprises the cured reaction product of:

Amidoamine co-curatives in epoxy thermoset adhesives

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.

Oxamidoamine co-curatives in epoxy thermoset adhesives

Aminated propoxylated 1,4-butanediol epoxy resin adducts as epoxy resin

The invention is an epoxy resin adhesive composition. The composition comprises:

Epoxy adhesive

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.

Preparation of N-substituted acrylamides

Catalysts preparation thereof and preparation of N-substituted

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.

Method for making syntactic foam with improved processing

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.

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.

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Austin, TX, United States of America

Kathy B Sellstrom