Arco Chemical Technology, L.p.

Atlantic Richfield Company

Lyondell Chemical Technology, L.p.

Lawrence J Karas

Roger A Grey

Andrew P Kahn

Frank J Liotta, Jr

Thomas I Evans

Paul Puckett

Ramesh Rameswaran

John A Sofranko

Haven S Kesling, Jr

David W Leyshon

Michael W Lynch

Lau S Yang

Yuan-Zhang Han

Lawrence M Candela

Diandre Armstead

H Dean Moore, Jr

Paul A Albano

Linda A Verkruyse

This invention is a method of purifying fuels containing organosulfur impurities. The fuel is oxidized with an organic hydroperoxide in the presence of an oxidation catalyst to form a sulfone product, followed by extraction of the sulfone product by solid-liquid or liquid-liquid extraction. The fuel is then contacted with a decomposition catalyst to remove the residual organic hydroperoxide from the fuel.

Desulfurization process

This invention is a method of purifying fuel streams containing organonitrogen and organosulfur impurities. The fuel stream is first treated to extract organonitrogen impurities so that the nitrogen content of the fuel stream is reduced by at least 50 percent. After separation and recovery of the nitrogen-depleted fuel stream, the organosulfur impurities in the fuel stream are then oxidized with an organic hydroperoxide in the presence of a titanium-containing silicon oxide catalyst. The resulting sulfones may be more readily removed from the fuel stream than the non-oxidized organosulfur impurities.

Organosulfur oxidation process

The present invention relates to purification of an MTBE process stream by contact in the liquid phase with a large pore zeolite such as 13X or Zeolite Y.

Purification on methyl tertiary butyl ether

A process for making unsaturated polyesters from 2-methyl-1,3-propanediol (MPD) is disclosed. The process comprises reacting one equivalent of an aromatic diacid with about two equivalents of MPD to produce an ester diol and then reacting one equivalent of the ester diol with from about 1.1 to about 1.9 equivalents of maleic anhydride to produce the polyester. The polyester has a fumarate/maleate ratio of 90/10 or greater.

Preparation of unsaturated polyesters

The present invention relates to purification of a tertiary butyl alcohol process stream by contact in the liquid phase with a large pore zeolite such as 13X in the sodium form.

Purification of tertiary butyl alcohol

Unsaturated terephthalate-based polyester resins (UPR) based on 2-methyl-1,3-propanediol, a saturated dicarboxylic acid or derivative thereof, and an unsaturated dicarboxylic acid or derivative thereof be prepared without use of a catalyst in reasonable cycle times. UPR based on these monomers exhibit exceptional solubility in styrene, and are thus useful in polyester molding resins.

Polyester resins based on terephthalic acid and 2-methyl-1,3-propanediol and processes for the preparation thereof

A process is provided for the production of a gasoline blending fraction rich in isooctane by the dimerization of isobutylene using tertiary butyl alcohol modifier and lower alkane diluent; advantageously the isobutylene is derived from the dehydration of tertiary butyl alcohol.

Selective olefin oligomerization

A tertiary olefin such as isobutylene is reacted with a lower unsaturated carboxylic acid to produce the ester in the presence of a large pore zeolite catalyst such as Zeolite Y, Zeolite beta or Zeolite X, the reaction can be illustrated by the equation

Tertiary alkyl ester preparation using large-pore zeolite catalysts

A tertiary olefin such as isobutylene is reacted with a lower carboxylic acid to produce the ester in the presence of a large pore zeolite catalyst such as Zeolite Y, Zeolite beta or Zeolite X.

Tertiary alkyl ester preparation

An olefin such as isobutylene is reacted with a carboxylic acid to produce the ester in the presence of a modifying agent effective to suppress olefin polymerization, the feed to the reaction containing not more than 0.7 mols water per mol of olefin.

Ester preparation

A process is provided for the production of a gasoline blending fraction rich in isooctane by the dimerization of isobutylene using tertiary butyl alcohol modifier and isoalkane diluent; advantageously the isobutylene is derived from the dehydration of tertiary butyl alcohol and the isoalkane used as diluent in the dimerization is the product formed by hydrogenation of the oligomerization product.

Isobutylene oligomerization using isooctane diluent

The present invention relates to a low sulfur diesel fuel which contains a dialkyl and a trialkyl derivative of glycerol in amount sufficient to reduce particulate matter emissions.

Diesel fuel

The invention relates to diesel fuel containing the nitric acid ester of 1-phenyl ethanol as cetane improver.

Diesel fuel composition

A practical, selective process for preparing oxetanes is disclosed. A 1,3-glycol monosulfate salt is prepared by sulfation and neutralization of the corresponding 1,3-glycol. The neutral monosulfate salt is then reacted with a strong base, resulting in efficient ring closure to the oxetane.

Process for the preparation of oxetanes from 1,3-glycol monosulfates

A process for recovering crude oil from a subterranean formation comprising injecting into the formation a liquid composition consisting essentially of a specific surfactant in an aqueous medium, driving the liquid composition through said formation to displace oil from said formation and recovering said oil in a production well. The surfactant has the general formula ##STR1## wherein R.sup.1 =C.sub.1 -C.sub.30 alkyl or alkylaryl, R.sup.2 =C.sub.2 H.sub.4 or C.sub.3 H.sub.6, R.sup.3 =C.sub.2 H.sub.4 or C.sub.3 H.sub.6, R.sup.4 =C.sub.1 to C.sub.12 alkyl or alkylaryl, R.sup.5 =H or C.sub.1 -C.sub.12 alkyl or alkylaryl, x and y are integers from 0 to 100, and z is an integer from 1 to 4.

Growing community of inventors

West Chester, PA, United States of America

Lawrence J Karas