Shell Oil Comapny

Kenzie Nozaki

Eit Drent

Johannes A Van Broekhoven

Ebel Klei

James S Hokanson

Anthony R Gatti

The invention is a linear random terpolymer comprised of repeating units of --CO--(C.sub.2 H.sub.4)-- and units of --CO--(C.sub.x H.sub.y)-- where x is greater than 2 and less than 20, having a melting point between about 150.degree. C. and about 245.degree. C. The invention also concerns a process to prepare a polymer having a melting point less than about 245.degree. C. which comprises contacting carbon monoxide and ethylene in the presence of one or more hydrocarbons C.sub.x H.sub.y containing an olefinically unsaturated --CH.dbd.CH-- group, where x is greater than 2 and less than 20, with a suitable catalyst and under conditions effective to prepare a linear random polymer having units of the formula --CO--(C.sub.2 H.sub.4)-- and units of the general formula --CO--(C.sub.x H.sub.y)--, and having a melting point less than about 245.degree. C.

Polyketone from carbon monoxide and mixture of olefins

Polyketone preparation from regulated quotient mixture of olefins

In the process for preparing 1,7-octadiene by hydrodimerizing butadiene in the presence of a solubilized palladium or palladium compound, a tertiary phosphine, formic acid, a base and optionally a solvent, improved rates of conversions of butadiene to 1,7-octadiene are obtained by carrying out the process in the presence of supported palladium, platinum or rhodium.

Production of 1,7-octadiene from butadiene

A highly active and stereoselective olefin polymerization catalyst component is obtained by halogenating a magnesium compound of the formula MgR'R' wherein R' is an alkoxide or aryloxide group and R' is an alkoxide or aryloxide group or halogen, with a halide of tetravalent titanium in the presence of a halohydrocarbon, and contacting the halogenated product with thionyl chloride and a tetravalent titanium compound.

Olefin polymerization catalyst compositions and polymerization process

Process for the combustion of particulate coal wherein the coal is combusted with an oxygen-containing gas in the presence of a particulate calcium-containing material, the process being also carried out in the presence of a tin (Sn)-containing material.

SO.sub.2 Capture-coal combustion

A process for preparing 1,7-octadiene by hydrodimerizing butadiene which comprises reacting the butadiene in the presence of formic acid or a salt thereof, optionally a solvent and a catalyst comprising palladium complexed with a tertiary phosphinite or phosphonite. More active catalysts are obtained with phosphinites and phosphonites than with phosphines or phosphites.

1,7-Octadiene process

A process for preparing 1,7-octadiene by hydrodimerizing butadiene which comprises reacting the butadiene in the presence of formic acid, or a salt thereof, optionally a solvent and a catalyst comprising palladium complexed with a sterically hindered phosphine, phosphinite or phosphonite and a different ligand selected from phosphine, phosphinite, phosphonite or phosphite. Enhanced catalytic activity is obtained.

Butadiene is hydrodimerized to 1,7-octadiene in high yield by contacting the butadiene with a formate of an alkali metal, alkaline earth metal or ammonia, a palladium catalyst, tertiary phosphine, a solvent selected from dialkyl sulfoxides, N,N-dialkylalkanamides, substituted and unsubstituted pyridines and sulfolanes and at least one mole of water per mole of formate salt.

Vinyl acetylene is coupled with butadiene to selectively produce 1-octen-7-yne by reacting the vinyl acetylene with butadiene in the presence of formic acid or a salt thereof, optionally a solvent and a catalyst comprising palladium complexed with tertiary organophosphorus ligand.

1-Octen-7-yne production

The prevention or substantial reversal of octane requirement increase in a spark-ignited, internal combustion engine is achieved by introducing, with the combustion intake charge, a fuel and/or lubricant composition containing an octane requirement increase-inhibiting amount of a high surface area, solid acid catalyst having an average particle size in the range of about 0.01 to 10 microns and an average non-volatile surface acidity of about 1 or less, expressed as pKa value, said solid acid catalyst being essentially nonreactive with the fuel or lubricant prior to combustion and chemically and thermally stable under combustion conditions in the engine.

Growing community of inventors

Houston, TX, United States of America

Kenzie Nozaki