Mobil Oil Corporation

Rhone-poulenc Agrochimie

Ross A Kremer

Robert J Anthes

Andrew G Horodysky

Liwen Wei

Stephen W Saunders

James R Boulton

Costandi A Audeh

Yusheng Xiong

Andrew Jeng

Angeline B Cardis

Leslie R Rudnick

Derek A Law

Abraham O Okorodudu

Patrick R Driscoll

Anil K Agrawal

David A Pearce

George J Weckesser

Frank Cariello

Susanne Von Rosenberg

Leopoldo C Mansueto, Jr

Monoalkylated diphenyl oxides are high-temperature stable lubricant fluids having excellent low temperature viscometrics, and excellent additive solubility. These monoalkylated products are obtained by the alkylation of diphenyl oxide using, for example, an olefin alkylating agent, usually in the C.sub.8 to C.sub.18 range, in the presence of an acidic zeolite alkylation catalyst such as USY, which provides the selectivity for the monoalkylated product.

Alkylated diphenyl ether lubricants

Alkyl ethers of sulfur containing hydroxyl-derived aromatics have been found to be effective as high-performance synthetic lubricant base stocks with superior catalytic thermal/oxidative stabilities, excellent antiwear and load-carrying properties, as exemplified by bisphenol sulfide (BPS) based products. These ethers are also highly useful in fuel compositions.

Hydrocarbyl ethers of sulfur-containing hydroxyl derived aromatics as

A process is disclosed for the catalytic norbornylation of aromatics comprising the steps of contacting norborene and an aromatic hydrocarbon with a solid catalyst comprising a porous crystalline material having a Constraint Index of from about 0.1 to about 12 under norbornylation conditions to evolve a product containing norbornylated aromatics.

Catalytic norbornylation of aromatics

A process for the heterogeneous catalytic oligomerization of norbornene comprising the steps of reacting norborene in the presence of a solid catalyst comprising a porous crystalline material having a Constraint Index of from about 0.1 to about 12 under oligomerization conditions to evolve a product containing norbornene oligomers.

Heterogeneous catalytic oligomerization of norbornene

The invention provides a two-step process for converting cyclopentadiene dimer to a high density fuel mixture comprising the steps of: (a) reacting said cyclopentadiene dimer in the presence of a solid catalyst comprising a porous crystalline material having a Constraint Index of from about 0.1 to about 12 under oligomerization/isomerization conditions to convert at least a portion of said cyclopentadiene dimer to a normally liquid intermediate product containing cyclopentadiene trimer, cyclopentadiene tetramer, and the isomerized and oligomerized products derived from the reaction of at least three cyclopentadiene monomer units; (b) hydrogenating said normally liquid intermediate product of step (a) in the presence of a hydrogenation catalyst to form a normally liquid high energy density fuel.

Oligomers of cyclopentadiene and process for making them

An ester-containing reaction product of a carbonyl compound, preferably an acyl halide and a thiodiphenol has high temperature antioxidant properties. The reaction product is useful as a synthetic lubricant base fluid or as an antioxidant additive when used in minor amounts of 0.01 to 10 wt. % in a mineral oil or hydrocracked oil lubricant base fluid. The reaction product can also be used in a fuel.

Ester fluids with high temperature stability

Alkyl ethers of sulfur-containing hydroxyl-derived aromatics have been found to be effective as high-performance synthetic lubricant base stocks with superior catalytic thermal/oxidative stabilities, excellent antiwear and load-carrying properties, as exemplified by bisphenol sulfide (BPS) based products. These ethers are also highly useful in fuel compositions.

The incorporation of the heterocyclic dimercaptothiadiazole functionality into the alkenylsuccinimide dispersant structures via the Mannich alkylaminomethylkation procedure provides a class of ashless non-phosphorus dispersants with multifunctional antiwear, antioxidant and corrosion inhibitor properties in lubricant compositions.

Multifunctional ashless dispersants derived from Mannich reaction of

Catalytic dewaxing of a waxy component-containing hydrocarbon feed is accomplished with improved selectivity employing, as catalyst, a zeolite the surface acid catalytic activity of which has been at least partially reduced by chemisorption of a surface-deactivating agent such as a bulky amine thereon. The invention is especially useful for the hydrodewaxing of a waxy lube range product to provide a high viscosity index, low pour point, low cloud point lubricating oil product.

Catalytic dewaxing process employing surface acidity deactivated zeolite

A waxy component-containing lubricating oil stock derived from the multi-stage catalytic oligomerization of a lower olefin such as propylene is subjected to selective catalytic hydrodewaxing in the presence of certain acidic zeolites, e.g., H-ZSM-23 and H-ZSM-35, preferably associated with a hydrogenation component such as platinum, palladium or zinc, to provide a high viscosity, low pour point lubricating oil product.

Catalytic dewaxing lubricating oil stock derived from oligomerized olefin

There is disclosed a process and an apparatus for beneficiating a mineral ore, such as phosphate-containing ore, in a substantially vertical column. The feed subjected to the benefication preferably has a particle size of less than 20 mesh. The feed is introduced into the column, containing at least one baffle, into which there is also introduced a gas at the bottom portion thereof and a liquid through at least one column inlet at the top of the column. The baffle and the rates of introduction of the feed, the gas, and the liquid are such as to create relatively high turbulence conditions within the column. The enriched, beneficiated product is removed at the top of the column, while the waste products, such as silica-containing material, in the case of a phosphate ore, are recovered at the bottom of the column. The column is either used as a single step flotation apparatus to recover mineral ore, or, preferably, as an apparatus of a multi-step flotation process wherein the rougher flotation step is carried out in the column and a subsequent cleaner flotation step in a conventional flotation apparatus, e.g., a Denver Flotation Cell.

Mineral ore flotation process and apparatus

Phosphoric acid is produced from dry phosphate ore, matrix by acidulation with sulfur trioxide in the presence of sulfuric acid catalyst to form polyphosphoric acid, treatment with sufficient water to convert the polyphosphoric acid to orthophosphoric acid and extraction with water or organic solvent such as a lower alcohol, particularly methanol or ethanol.

Process for production of phosphoric acid from dry matrix by SO.sub.3

Phosphatic clay dispersions are modified by dispersing the phosphate matrix containing the clay in a dilute solution of selected acids prior to screening, sizing and other beneficiation operations.

Ore beneficiation process

There are disclosed method and compositions for reducing the viscosity of phosphate matrix slurries and improving consolidation characteristics of slimes resulting from the beneficiation of the slurries. An unexpectedly greater degree of viscosity reduction and clay consolidation characteristics improvement is obtained by adding the compositions to the water utilized to slurry the phosphate matrix prior to the information of the slurries. The compositions include water-soluble compounds, such as organic acids, mineral acids, monovalent inorganic salts and polyvalent inorganic salts.

Treatment of water used in preparing phosphate matrix slurries

In conventional froth floatation procedures for phosphate flotation, the feed is conditioned, diluted and floated. By lowering the pH with acid after the conditioning step, but before flotation, to a pH of from about 6.4 to about 7.0, one can improve phosphate selectivity.

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Ringoes, NJ, United States of America

Ross A Kremer