Advanced Polyolefin Technologies LLC

Gas Research Institute

The Penn State Research Foundation

Minren Lin

Tze-Chiang Chung

Ayusman Sen

Tim Hsu

Polyolefins incorporating hindered phenol groups covalently bound thereto are disclosed. The hindered phenols are covalently bound to the polyolefin through a residue of an alkenyl compound having a carboxylic acid and/or anhydride on the polyolefin. Such polyolefins can be prepared by reacting the following components together under heat: (a) a polyolefin; (b) an alkenyl compound having a carboxylic acid and/or anhydride; and (c) a hindered phenol reagent that can react with the carboxylic acid and/or anhydride of the alkenyl compound; to produce a polyolefin having hindered phenol groups covalently bound thereto. Reactive compounding of such components allows preparation of such polyolefins in a continuous process and in a single reaction step.

Polyolefin polymer incorporating hindered phenol and manufacture thereof

Polyolefins having the same or different functional groups covalently bound to the polyolefin, such as polyolefins having hindered phenol groups bound thereto, can be prepared by from a maleic anhydride modified polyolefin, with or without a coupling agent, and a hindered phenol reagent under heat, e.g., by heating the components to at least about 170° C., such as by reactive extrusion. A polyolefin having hindered phenol groups can be added to the components as a stabilizer prior to or during reacting the components together under heat.

Functional polyolefin polymers and manufacture thereof

Polyolefins having the same or different functional groups covalently bound to the polyolefin, such as polyolefins having hindered phenol groups bound thereto, can be prepared by from a maleic anhydride modified polyolefin, with or without a coupling agent, and a hindered phenol reagent under heat, e.g., by heating the components to at least about 170&#xb0; C., such as by reactive extrusion. A polyolefin having hindered phenol groups can be added to the components as a stabilizer prior to or during reacting the components together under heat.

A process for the facile two-step synthesis of methanol from methane is disclosed. In accordance with the invention, an appropriate combination of initiator and reaction medium is employed to achieve methane conversion in very high selectivity and yield under near-ambient temperature.

Process for the conversion of methane

A process for direct oxidative carbonylation of lower alkanes to acids having one greater carbon atom. The process uses a metal salt catalyst promoted by halide ions and/or a metal with oxygen as the oxidant in an aqueous medium. The process is especially effective for conversion of methane to acetic acid.

Direct catalytic oxidative carbonylation of lower alkanes to acids

A process for catalytic direct oxidation of hydrocarbons, particularly lower alkanes and single ring aromatics, to acids by dioxygen under mild temperature conditions using specified metal or metal salt catalysts. Turnovers in excess of 1000 for acetic acid formation from ethane and in excess of 100 for formic acid formation from methane have been obtained at reaction temperatures below about 100.degree. C. using palladium catalyst. A coreductant of carbon monoxide in an aqueous system is preferred.

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State College, PA, United States of America

Minren Lin