E.i. Dupont De Nemours and Company

John S Coates

Christian Peter Lenges

Patrick Henry Corcoran

Gia Huynh-Ba

Carl Brent Douglas

A composition that can be used as a component in auto clear coat and primer is disclosed. The composition comprises or is an alkoxylated amine having the formula of (A)[N(RH)]including an isomer or mixture of isomers thereof. Also disclosed is a process, which comprises contacting an amine with an epoxide under a condition sufficient to produce an alkoxylated amine. Further disclosed is a composition that can be used as coating composition and primer, which comprises an alkoxylated amine and an organic polyisocyanate.

Coating composition for ambient cure containing an alkoxylated amine

A palladium-on-silica catalyst for the anthraquinone-hydroquinone method of preparing hydrogen peroxide is prepared by adding acid solutions of a palladium compound and of an additive metal salt to an aqueous slurry of silica particles, lowering the pH of the slurry to about 0.8-1.0, then incrementally raising the pH of the slurry to 2.3-2.7, to 3.8-4.2, then to 6.8-7.2, and then reducing the palladium compound to palladium metal.

Catalyst for anthraquinone hydrogen peroxide process

The amounts of methacrolein-, dihydrofuran-and aldehydic impurities in THF made from acetylene and formaldehyde can be significantly reduced by hydrogenating them during an interval in the multi-stage distillation THF refining procedure.

Purification of tetrahydrofuran

1,4-Butynediol is catalytically hydrogenated under conventional conditions to produce a reaction product containing 1,4-butanediol. This reaction product is then hydrogenated under acid conditions, i.e., pH 1-6 and temperatures of 120.degree.-150.degree. C., to produce a 1,4-butanediol product. Upon further separation, the 1,4-butanediol is practically free from compounds that would produce color when the diol is used to make polyesters.

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Newark, DE, United States of America

John S Coates