Exxonmobil Chemical Patents Inc.

Gregory K Hall

Andy Haishung Tsou

Yong Yang

Peijun Jiang

John Robert Hagadorn

Robert J Wittenbrink

Sunny Jacob

Stefan B Ohlsson

Caiguo Gong

Sarah J Mattler

Alexander I Norman

Ying Sun

Michael J Goncy

Arturo Leyva

Xiao-Chuan Wang

Zhen-Yu Zhu

Xin Hao Cai

Keran Chen

Ling Ge

LeiLei Ma

Jean-Marc C De Koninck

Ying Ying Sun

Mohsen Shahmirzadie Yeganeh

A film, preferably, a multi-layered film, including a polymer composition, wherein the polymer composition includes: within a range from 1 wt % to 25 wt % of a cyclic olefin copolymer based on the weight of the polymer composition, and within a range from 75 wt % to 99 wt % (the remainder of material) of a polyethylene based on the weight of the polymer composition, wherein the cyclic olefin copolymer has a glass transition temperature (T.sub.g) of at least 80.degree. C. The films may be used in shrink packaging application.

Polyethylene films and methods of making the same

Described is a polyethylene composition comprising at least one polyethylene having a crystallinity of less than 60, or 55, or 50% and within a range from 0.2 wt % to 15 wt % of cyclic-olefin copolymer and within a range from 0.2 wt % to 15 wt % of hydrocarbon resin, by weight of the polyethylene composition. The polyethylene compositions can be formed into useful articles such as films and injection molded and thermoformed articles.

Polyethylene compositions and articles manufactured therefrom

Provided is a composition having 70 wt % to 90 wt % of a first propylene-olefin copolymer component having an ethylene content of 15 to 21 wt %; and 10 wt % to 30 wt % of a second propylene-olefin copolymer component having an ethylene content of 6 to 10 wt %; wherein the weight average molecular weight of the first component is 250,000 to 1,780,000 g/mol higher than the weight average molecular weight of the second component; wherein the reactivity ratio product of the first component is less than 0.75; wherein the reactivity ratio product of the second component is greater than or equal to 0.75.

Propylene-olefin copolymers and methods for making the same

Provided herein is a process for making a grafted cross-linked polymer blend, by polymerizing a first and second polymer solution (each having 75 to 99 wt % propylene-derived units, 1 to 25 wt % ethylene-derived units, and 0.05 to 6 wt % diene-derived units); combining the first and second polymer solution to produce a polymer blend solution; removing solvent from the polymer blend solution to produce a polymer blend; mixing the polymer blend with a coagent and a vinyl-terminated silane compound; subjecting the polymer blend to electron beam irradiation to grafting the vinyl-terminated silane compound to either or both of the first polymer and the second polymer to form a grafted polymer blend; and moisture curing the grafted polymer blend to form a grafted cross-linked polymer blend, wherein the grafted cross-linked polymer blend is substantially free of peroxide.

Process of making crosslinked polyolefin polymer blends and compositions prepared thereof

Provided is a process for making thermoplastic polymer pellets. The process has the following steps: (a) melting a thermoplastic polymer to form a polymer melt; (b) extruding the melt through a die to form a substantially continuous molten polymer extrudate wherein the die has a contact surface bearing a polymer coating having a surface energy of less than 25 mN/m at 20&#xb0; C.; (c) cooling the extrudate to form a cooled extrudate; and (d) pelletizing the cooled extrudate to form a plurality of polymer pellets. Provided is also a polymer pellet shipping system and a stable thermoplastic polymer pellet.

Process for making thermoplastic polymer pellets

Growing community of inventors

Humble, TX, United States of America

Gregory K Hall