The Dow Chemical Company

Dow Global Technolgoies LLC

Clinton J Boriack

Zeng K Liao

Hans R Friedli

Duane S Treybig

Thomas H Kalantar

William C Pike

James A Rabon, Jr

Thomas Caldwell Young

Robert M Drake

Shuji Maeda

Edward Kronenberger

Mark S Burkinshaw

Roland Werner

Andreas Tigges

Paulo Alfonso Dos Santos Pereira

Joachim Drewing

Elwin G Collier

Thomas C Young

Edward J Kronenberger

Andreas D Tigges

A process for the production of liquid epoxy resins, including: contacting a polyhydric phenol and an epihalohydrin in the presence of an ionic catalyst to form a halohydrin intermediate reaction product; concurrently: reacting a portion of the halohydrin intermediate reaction product with an alkali hydroxide to form a solid salt suspended in a liquid mixture including a dehydrohalogenated product and unreacted halohydrin intermediate, wherein the alkali hydroxide is used at less than a stoichiometric amount; and removing water and epihalohydrin as a vapor from the reacting mixture; separating the solid salt from the liquid mixture; reacting at least a portion of the unreacted halohydrin intermediate with an alkali hydroxide in the presence of water to form an organic mixture including an epoxy resin and unreacted epihalohydrin and an aqueous solution including a salt; separating the aqueous mixture from the organic mixture; and separating the unreacted epihalohydrin from the liquid epoxy resin.

Process for manufacturing liquid epoxy resins

A process for manufacturing an &#x3b1;-dihydroxy derivative from an aryl allyl ether wherein such &#x3b1;-dihydroxy derivative can be used to prepare an &#x3b1;-halohydrin intermediate and an epoxy resin prepared therefrom including epoxidizing an &#x3b1;-halohydrin intermediate produced from a halide substitution of an &#x3b1;-dihydroxy derivative which has been obtained by a dihydroxylation reaction of an aryl allyl ether in the presence of an oxidant or in the presence of an oxidant and a catalyst.

Process for manufacturing an &#x3b1;-dihydroxy derivative and epoxy resins prepared therefrom

A process for manufacturing an &agr;-dihydroxy derivative from an aryl allyl ether wherein such &agr;-dihydroxy derivative can be used to prepare an &agr;-halohydrin intermediate and an epoxy resin prepared therefrom including epoxidizing an &agr;-halohydrin intermediate produced from a halide substitution of an &agr;-dihydroxy derivative which has been obtained by a dihydroxylation reaction of an aryl allyl ether in the presence of an oxidant or in the presence of an oxidant and a catalyst.

Process for manufacturing an alpha-dihydroxy derivative and epoxy resins prepared therefrom

A process for manufacturing an &agr;-halohydrin intermediate and an epoxy resin prepared therefrom including epoxidizing an &agr;-halohydrin intermediate produced from an in situ halide substitution-deesterification of an &agr;-hydroxy ester derivative which has been obtained by the coupling reaction of a phenol or a mixture of phenols and a glycidyl ester optionally in the presence of a catalyst.

Process for manufacturing a hydroxyester derivative intermediate and epoxy resins prepared therefrom

A process for making an aromatic glycidyl ether epoxy compound by contacting an allyl ether made from the hydroxy moiety of a hydroxy-containing aromatic compound with an inorganic or organic hydroperoxide oxidant in the presence of a transition metal complex catalyst, wherein at least (a) the allyl ether is conformationally restricted or (b) the transition metal complex catalyst contains at least one or more stable ligands attached to the transition metal. The process of the present invention provides for epoxidizing aryl allyl ethers with high epoxidation yield (for example, greater than 70% to 90%) and high hydroperoxide selectivity (for example, greater than 70% to 90%).

Epoxidation process for aryl allyl ethers

Curable compositions which contain network polymers

Strong base anion exchange resins that contain quaternary ammonium groups derived from higher molecular weight amines, such as triethylamine or tripropylamine instead of trimethylamine, have a higher reactivity for catalyzing the reaction of an epoxide compound with an acid compound to form an ester.

Catalysts for reaction of epoxides and acids

The production of esters via the reaction of an epoxide with a carboxylic acid hasbeen shown to give improved activity when a strong base macroporous anion exchange resin having an acrylic backbone is used in place of a styrene-divinylbenzene based anion exchange resin having an equivalent exchange capacity. Excellent results are obtained when acrylic acid and propylene oxide are reacted together in the presence of strong base macroporous anion exchange resins which have an acrylic backbone.

Process for making carboxylic acid esters using a crosslinked acrylic

Halogenated dicyclopentyl ethers or thioethers of alkylene glycol mono(meth) acrylate or mono (meth) propionates are prepared. The dihalo compounds having (meth) acrylic functionality are useful to prepare thermosetting or thermoplastic resins with built in fire retardency. The tetrahalo compounds are useful fire retardant additives in the manufacture of polymeric foams.

Halogenated (meth) acrylate compounds

Brominated cycloaliphatic (meth) acrylate compositions are prepared by the reaction of bromine at a temperature in the range from -30.degree. C. to 50.degree. C. with compositions made by reacting (meth) acrylic acid with dicyclopentadiene compositions in the presence of a Friedel-Crafts catalyst such as BF.sub.3. The brominated compositions are useful to make copolymers which find use as metal coatings, laminates, ultraviolet light curable coatings and the like.

Brominated cycloaliphatic (meth) acrylate compositions

Chlorinated cycloaliphatic (meth) acrylate compositions are prepared by the reaction of chlorine at a temperature in the range from -30.degree. C. to 50.degree. C. with compositions made by reacting (meth) acrylic acid with crude dicyclopentadiene in the presence of a Friedel-Crafts catalyst such as BF.sub.3. The chlorinated compositions have a pleasant fruity odor and are useful to make homopolymers or copolymers which find use as metal coatings, inks, ultraviolet light curable coatings and the like.

Growing community of inventors

Jones Creek, TX, United States of America

Clinton J Boriack