The Penn State Research Foundation

Exxon Chemical Patents, Inc.

Exxon Research and Engineering Company

Advanced Polyolefin Technologies LLC

Daikin Institute of Advanced Chemistry and Technology, Inc.

Amoco Corporation

Bp Amoco Corporation

Daikin America, Inc.

The Daikin Institute of Advanced Chemistry and Technology, Int.

Tze-Chiang Chung

Jon E Stanat

Frank J Chen

Alok Kumar

Katsuyoshi Kubo

Tim Hsu

Minren Lin

Han Hong

Masahiko Oka

Ronald L Shubkin

Soon Hong Lee

Ruidong Ding

Jin Yong Dong

Jinyong Dong

Jan Bock

Honglan Lu

Evangelos Manias

Zhiming M Wang

Rodney V Kastrup

Guangxue Xu

Encok Berluche

Zhicheng Zhang

Shangtao Chen

Houxiang Li

Koji Kigawa

Atitsa Petchsuk

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

A new class of cost-effective carbon fiber precursors that comprise both hydrocarbon polymer and Pitch structural features in the same polymer structure to exhibit complementary advantages of both PAN- and Pitch-based carbon fiber precursors. The new class of carbon fiber precursors comprise a polymeric pitch copolymer, wherein the polymeric pitch copolymer includes a polymer chain and several pitch polycyclic aromatic hydrocarbon (PAH) molecules grafted or chemically bonded to the polymer chain. Method and processes for the creation of the new class of carbon fiber precursors are also presented, wherein said methods may comprise a thermally-induced coupling and extrusion step.

Carbon fiber precursors and production process

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.

Chain end functionalized fluoropolymers are disclosed exhibiting good chemical reactivity high breakdown electric field (E&#x3e;100 MV/m) and high dielectric constants (i.e., &#x2208;&#x3e;10). The polymers can be prepared by functional initiators and from a variety of fluoromonomers including vinylidene difluoride together with one or more additional monomers. The polymers can be combined with other dielectric materials to form composites having uniform composition and morphology.

Chain end functionalized fluoropolymers having good electrical properties and good chemical reactivity

A one-pot polymerization process of preparing long chain branching polymers is provided. Also described is a 'T' reagent that serves as a link between main and side chains of an inventive long chain branching polymer. A 'T' reagent has at least two functionalities, serving as both co-monomer and chain transfer reaction agent. Optionally, a copolymerization reaction between an alpha-olefin and &#x201c;T&#x201d; reagent takes place initially to incorporate some &#x201c;T&#x201d; molecules in the polyolefin main chain, and the incorporated &#x201c;T&#x201d; units then behave as chain transfer agents for reacting with the propagating polyolefin chains to form side chains. In a particular embodiment, a polymerization process for preparing long chain branching polyethylene (LCBPE) and long chain branching polypropylene (LCBPP) is detailed.

One-pot process and reagents for preparing long chain branched polymers

Telechelic polymers having two reactive functional groups at the same polymer chain end are disclosed. These polymers can be prepared by combining a cycloborane initiator, at least one free radical polymerizable monomer and oxygen to form a polymer segment having a borane residue at one end of the polymer segment resulting from the cycloborane initiator; and converting the borane residue to at least two functional groups to form the telechelic polymer.

Telechelic polymers containing reactive functional groups

Polyolefin/clay nanocomposites with an exfoliated structure are prepared by a process which employs a specific chain end functionalized polyolefin that serves as the clay/polyolefin interfacial compatibilizer (or polymeric surfactant). The polyolefin contains a hydrophilic terminal functional group and an unperturbed hydrophobic high molecular weight polymer chain. The reaction may be carried out in a melt or solution process. Also disclosed are materials made by the process. Also disclosed are materials made by the process.

Exfoliated polyolefin/clay nanocomposites using chain end functionalized polyolefin as the polymeric surfactant

Functional fluoro-monomers are polymerized with an organoborane functional initiator in the presence of oxygen to yield functional fluoropolymers and copolymers to produce functional polymers having functional groups at the beginning of the polymer chain.

Process of preparing functional fluoropolymers

Functional fluoro-monomers are polymerized with an organoborane initiator to yield functional fluoro-polymers and copolymers including functional polymers prepared from monomers having allylic protons, Si&#x2014;H groups, and olefinic groups.

Functional fluoropolymers and process therefor

An in situ controlled oxidation reaction of trialkylborane (BR ) in the presence of polyolefin and maleic anhydride produces mono-oxidized trialkylborane adducts, i.e., peroxyldialkylborane (R&mdash;O&mdash;O&mdash;BR ), that can undergo homolytic cleavage to form (R&mdash;O* *O&mdash;BR ) and activate the polyolefin chain by alkoxyl radical (R&mdash;O*) hydrogen-abstraction at ambient temperature. The formed polymeric radical (C*), associated with the oxidized borane moiety (*O&mdash;BR ), then reacts with maleic anhydride by addition reaction, without side reactions, to form functional polyolefins that contain incorporated maleic anhydride side groups.

Process of preparing maleic anhydride modified polyolefins by the oxidation adducts of borane and maleic anhydride

&ldquo;Living&rdquo; free radical polymerization process

Polyolefin containing a terminal phenyl or substituted phenyl group and process for preparing same

Living free radical initiators based on alkylperoxydiarylborane derivatives and living free radical polymerization process

Linear copolymers of alpha-olefins and divinylbenzene having narrow molecular weight and composition distributions, graft copolymers derived therefrom, and process for preparing same

Growing community of inventors

State College, PA, United States of America

Tze-Chiang Chung