Texaco Inc.

Texaco Chemical Company

Robert A Grigsby, Jr

George P Speranza

Richard J Dominguez

Michael E Brennan

John F Knifton

Michael Cuscurida

Robert L Zimmerman

Ernest L Yeakey

David R McCoy

Wheeler C Crawford

Doris M Rice

Jiang-Jen Lin

Harold G Waddill

John M Larkin

Edward E McEntire

Edward C Nieh

Bruce W Peterson

Dudley J Primeaux

Kathy B Sellstrom

Walter H Brader, Jr

Michael Cuscurdia

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

Epoxy adhesives containing aminated, long chain monoepoxide capped

A process for preparing a polyurea reaction injection molded (RIM) elastomer is described. A hindered polyetherpolyamine is first obtained by reacting a polyol having two or more hydroxyl groups with an effective amount of long chain alkyl epoxide to give an at least partially hindered intermediate having hydroxyl terminations; and then aminating at least one of the hydroxyl terminations on the intermediate to primary amine groups to give an at least partially hindered polyetherpolyamine. The hindered polyetherpolyamine is then reacted with a polyisocyanate in the optional presence of a catalyst to give a polyurea RIM elastomer. The long chain alkyl group provides steric hindrance to the primary aliphatic amine group, which slows down the reactivity of the amine. The slower reactivity of the amine group is useful in RIM and RRIM compositions since it allows for longer shot or flow times, which in turn permit larger parts to be made from existing equipment.

Hindered amines to slow down reactivity in producing rim elastomers

A pourable and/or sprayable polyurea elastomer is disclosed. The elastomer includes an isocyanate, an amine terminated polyoxyalkylene polyol, and a chain extender. The isocyanate is preferably a quasi-prepolymer of an isocyanate and a material selected from at least one polyol, a high molecular weight polyoxyalkyleneamine or a combination thereof. The chain extender includes at least di(methylthio)-toluene diamine. A method for improving the flowability of a polyurea elastomer, thereby permitting the elastomer to be sprayed or, optionally, poured, is also disclosed.

Sprayable polyurea elastomer made from reaction of isocyanate compound

The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a quasi-prepolymer made from an excess of polyisocyanate reacted with polycarbonate polyols and polyether polyols.

Reaction injection molded elastomers prepared from amine terminated

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

Products useful as surfactants, corrosion inhibitors, water repellent agents, paint adhesion promoters, etc. are prepared by reacting formaldehyde and a phenol with an alkyl amine containing internal propoxy or propoxy/ethoxy groups to thereby provide a corresponding Mannich condensate having a desired utility. The Mannich condensates may also be reacted with an alkylene oxide feed stock containing ethylene oxide or propylene oxide or 1,2-butylene oxide or a mixture thereof under conventional alkoxylation conditions to thereby provide a corresponding alkoxylated Mannich condensate having a utility which may be the same as or different from the utility of the initial Mannich condensate.

Mannich condensates of a substituted phenol and an alkylamine containing

The invention is reaction injection molded (RIM) elastomer comprising a cured reaction product of primary or secondary amine terminated polyethers of greater than 1500 molecular weight, an aromatic polyisocyanate, a combination of an unsubstituted aromatic diamine chain extender and a substituted acyclic aliphatic diamine chain extender. The invention is also a method of preparation of a RIM polyurea elastomer as described above.

This invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, a chain extender, an aromatic polyisocyanate and an aditive comprising an amine of the general formula ##STR1## wherein R is selected from the group consisting of alkyl and alkylphenyl each of 8 to 30 carbon atoms, W is OCH.sub.2 CH.sub.2 and/or OCH.sub.2 CH(CH.sub.3), R' is methyl or ethyl, x ranges from 0 to 50, and y ranges from 0 to 14.

Rim elastomer

This invention relates to a reaction injection molded elastomer made by reacting ingredients comprising a high molecular weight polyol or polyoxyalkylene polyamine, a chain extender and a quasi-prepolymer of a polyoxyalkylene polyamine and an aromatic isocyanate.

Reaction injection molded elastomer made from a quasi-prepolymer of a

The invention is a reinforced reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of greater than 1500 average molecular weight, having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate, a filler and an effective amount of a silane having the formula:

Reactive glass component in rim

Mannich condensates are prepared from 2,6-di-t-butylphenol, formaldehyde and a polyoxyalkylene amine. The novel compounds are useful as epoxy accelerators and curing agents.

Synthesis of products from polyoxyalkylene amines and

This invention relates to a reaction product of polyoxyalkylene polyamine and an isocyanate wherein the polyoxyalkylene polyamine is present in less than the stoichiometric amount.

Reaction product of polyoxyalkylene polyamine and an aliphatic isocyanate

A class of Mannich condensates containing phosphorus prepared by reacting a phenol with formaldehyde and a primay amine, and then reacting the product with formaldehyde and a dialkyl phosphite. Useful applications include use as a fire retardant additive in polyurethane foams.

Phosphorus containing aromatic amino polyols

Quasi-prepolymers are made from aromatic isocyanates and aromatic-amine amides which comprise the reaction product of a polyoxyalkylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and an isatoic anhydride of the formula: ##STR1## where B is selected from the group consisting of hydrogen, alkyl, nitro, halo, hydroxy, amino and cyano and n is a number from 1 to 4. Such materials are useful for the production of reaction injection molded elastomers having improved properties.

Quasi-prepolymers from isatoic anhydride derivatives of polyoxyalkylene

Reaction injection molded (RIM) elastomers are made in a one-shot process from certain aromatic-amine amides which comprise the reaction product of a polyoxyalkylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and having an average molecular weight of above about 3000 and an isatoic anhydride of the formula: ##STR1## where R is selected from the group consisting of hydrogen, alkyl, nitro, halo, hydroxy, amino and cyano and n is a number of 1-4. Such elastomers have improved tensile strength, tear strength and elongation properties.

Growing community of inventors

Georgetown, TX, United States of America

Robert A Grigsby, Jr