The Dow Chemical Company

Dow Global Technolgoies LLC

Zeng K Liao

James L Bertram

Chun S Wang

Clinton J Boriack

Thomas H Kalantar

Lloyd A McCrary

A L McCrary

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

A process reaction between: (1) a compound that contains one or more epoxide moieties per molecule, and (2) a compound that contains one or more primary aliphatic hydroxyl groups per molecule; is catalyzed by: (3) a catalyst compound containing one or more trifluoromethanesulfonate moieties and one or more silyl moieties and run at a temperature of no more than 130.degree. C., such that the catalyst preferably catalyzes reaction at the primary aliphatic hydroxyl group, so that the resulting resin does not gel.

Process to react epoxide-containing compounds and aliphatic alcohols

Graft copolymer coating compositions

Compounds are prepared which have at least one aromatic cyanate group and at least one organosiloxane moiety per molecule. These compounds when cured possess excellent thermal stability, moisture resistance properties and a low dielectric constant.

Aromatic cyanate-siloxane

Blends containing (1) at least one compound containing an average of more than one vicinal aromatic cyanate group per molecule and at least one organosiloxane moiety per molecule and (2) at least one compound containing an average of more than one vicinal aromatic cyanate group per molecule which is substantially free of organosiloxane moieties. The compositions are useful as a component in adhesives, coatings, laminates, composites, encapsulants, filament winding, and molding.

Blends containing cyanate-siloxanes

Curable compositions containing a compound containing an average of more than one vicinal aromatic cyanate group per molecule and at least one organosiloxane moiety per molecule and a curing catalyst therefor. The compositions are useful as a component in adhesives, coatings, laminates, composites, encapsulants, filament winding, and molding.

Compounds are prepared which contain both an organosiloxane moiety and either a phenolic hydroxyl group or an epoxide group. Also disclosed are curable and cured compositions.

Aromatic hydroxyl-containing compounds containing organosiloxane

Glycidyl esters containing at least one glycidyl ester group and at least one organo siloxane moiety per molecule are prepared by reacting (1) at least one compound containing at least one glycidyl ester group per molecule and at least one unsaturated aliphatic or cycloaliphatic group per molecule; with (2) a compound containing at least one hydrosiloxane moiety per molecule.

Growing community of inventors

Lake Jackson, TX, United States of America

Zeng K Liao