Chevron Oronite Company LLC

The University of Southern Mississippi

Casey Don Stokes

Robson F Storey

James Joseph Harrison

William R Ruhe, Jr

William R Ruhe

Young A Chang

Kelby Simison

Nemesio Martinez-Castro

David L Morgan

James A Gray

Patrick J McDougall

Subramanyam Ummadisetty

Willem Van Dam

Christopher Garrett Campbell

Provided herein are methods for preparing a functionalized polyolefin from an unsaturated polyolefin containing one or more non-aromatic main-chain double bonds and for reducing the size and/or polydispersity index (i.e., increasing the homogeneity) of the unsaturated polyolefin.

Methods of preparing functionalized polyolefins

Disclosed is a method of preparing terminally functionalized telechelic polymers using a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product, which comprises quenching the polymer product with a functionalized N-substituted pyrrole to thereby introduce the functionalized N-substituted pyrrole at the terminal reactive polymer chain end(s). A method is also disclosed whereby the N-substituent may be derivatized to a basic amine containing functional group. Also disclosed are the terminal functionalized polyisobuyl N-substituted pyrrole compounds where the polyisobutyl group is substituted at the 2 and 3 position of the N-substituted pyrrole.

Amine-terminated telechelic polymers and precursors thereto and methods for their preparation

Provided herein are copolymers of a polyaminopolymer and polyanhydride, wherein the polyaminopolymer comprises a polyaminopolyolefin; and methods of their preparation.

Copolymers of polyaminopolyolefins and polyanhydrides and methods of their preparation

Provided herein are methods for the preparation of telechelic polyolefins via polymerization reaction with a terpene initiator.

Methods for producing telechelic polyolefins from terpene initiators

Provided herein are methods for the preparation of mono- and multi-functional telechelic polyolefins via polymerization reaction with a terpene-based initiator.

Methods of producing mono- and multi-functional polymers from terpene-based initiators

Provided herein are methods for preparing vinylidene-terminated polyolefins. Further provided herein are sulfide-terminated polyolefins.

Production of vinylidene-terminated and sulfide-terminated telechelic polyolefins via quenching with disulfides

The present invention is directed to a method for preparation of polyolefins containing exo-olefin chain ends. The method involves quenching a cationic quasi-living polyolefin polymer system with a nitrogen-containing five-membered aromatic ring having at least two hydrocarbyl substituent compounds attached to the ring.

Method for preparation of polyolefins containing exo-olefin chain ends

The present invention is directed to a method for preparing polyolefins containing a high percentage of exo-olefin chain ends. The method involves ionizing a polyolefin containing tert-chloride chain ends and reacting the ionized polyolefin with one or more nitrogen-containing five-membered aromatic ring or one or more hindered secondary or tertiary amines, or mixtures thereof.

Method for preparing polyolefins containing a high percentage of exo-olefin chain ends

Provided herein are methods for a vinylidene terminated polyolefin comprising: In some embodiments, the dihydrocarbylmonosulfide has the formula:R&#x2014;S&#x2014;Rwherein Rand Rare each, independently, hydrocarbyl.

Production of vinylidene-terminated polyolefins via quenching with monosulfides

Provided herein are methods for preparing vinylidene-terminated polyolefins. Further, provided herein are novel sulfide-terminated polyolefins of the formula: wherein Ris a polyolefin group and Ris hydrocarbyl; and methods for producing the same.

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Novato, CA, United States of America

Casey Don Stokes