Phillips Petroleum Company

Kent W Rollmann

Max P McDaniel

Elizabeth Ann Benham

William R Coutant

William M Whitte

Rickey D Badley

F Wallace Bailey

Chromium catalyst compositions are provided. These chromium catalyst compositions comprise at least two chromium catalyst systems that have a certain amount of chromium and a support that comprises silica and titania. the supports have certain pore volumes and surface areas. These catalyst compositions are useful for homopolymerizing ethylene or copolymerizing ethylene with a comonomer. The resins produced are useful in film applications.

Chromium catalyst compositions and polymerization processes therewith

This invention provides a chromium catalyst system that comprises [a] a support that comprises silica, wherein said support has a surface area to pore volume relationship as follows

Chromium catalyst compositions and ethylene polymerization processes

This invention provides a chromium catalyst system that comprises

Stabilization of asphalt and asphalt rubber compositions against degradation, e.g., viscosity increase by addition of a finite small but effective viscosity stabilizing amount of at least one alkali metal salt of an organic or inorganic acid.

Asphalt compositions

Polyphenylene oxide is conveniently blended with conjugated diene-monovinylarene copolymers by using a mixed solvent of aromatic and paraffinic/cycloparaffinic hydrocarbons; preferably a polyphenylene oxide solution in an aromatic solvent is added to the copolymer cement prior to polymer recovery but after monomer polymerization is essentially complete.

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Searcy, AR, United States of America

Kent W Rollmann