Exxonmobil Chemical Patents Inc.

Exxon Research and Engineering Company

Exxonmobil Research and Engineering Company

Exxonmobil Upstream Research Company

Azdel, Inc.

Arnold Lustiger

David John Lohse

Blair Alfred Graham

Cary N Marzinsky

Timothy D Shaffer

John P Dismukes

Thomas T Sun

Michael Paul Anderson

Johannes Matthieu Soulages

Jeffrey Valentage

Liza M Monette

Russell R Mueller

H Daniel Wagner

Walter T Matuszek

Dennis G Peiffer

Donna Jean Crowther

Andy Haishung Tsou

Pradeep P Shirodkar

Donald N Schulz

Jianya Cheng

Yong Yang

Avinash Chandrakant Gadkari

Zerong Lin

David Craig Dalrymple

Richard S Polizzotti

Pamela Jean Wright

Adriana S Silva

Victor DeFlorio

David Michael Fiscus

Huaxing Zhou

Barbara Carstensen

Alexander I Norman

Stanley J Katzen

Srinivasan Rajagopalan

Madhavi Vadlamudi

Jeanne Marie MacDonald

Ronald N Cooke

Barry C Trudell

Yann Devorest

Cary Neil Marzinsky

In some embodiments, the present disclosure provides a composition comprising 1) about 97.5 wt % to about 99.9 wt % of a first polyethylene having a density of about 0.91 g/cmto about 0.94 g/cm, and a melt strength of about 10 mN or greater; and 2) about 0.1 wt % to about 2.5 wt % of a second polyethylene having an Mw of about 500,000 g/mol or more. In some embodiments, the composition is a film. In some embodiments, the present disclosure provides a method of making a composition comprising blending a first polyethylene of any embodiment described herein and a second polyethylene of any embodiment described herein.

Enhanced processability of LLDPE by addition of ultra-high molecular weight density polyethylene

The present disclosure relates to methods for preparing materials from heavy feedstocks. In particular, the disclosure provides a chemical process to convert heavy feedstocks with predominant polyaromatic hydrocarbon molecules or species, including the residues of petrochemical refining or extraction, into thermoset or thermoplastic materials that can be used alone or as a component in a composite material.

Methods for preparing materials from polyaromatic heavy feedstocks

The present systems and methods utilize a polyamic acid solution as a precursor to form a polyimide bead having desired properties. The polyamic acid solution may be formed into a polyamic acid droplet. The polyamic acid droplet is then processed to form a polyamic acid bead, such as by extraction of solvent to concentrate the polyamic acid or by partial chemical imidization of the polyamic acid. The polyamic acid bead is then better able to retain its shape during subsequent processing steps, such as drying and pressurizing, before final thermal imidization.

Systems and methods for forming high performance compressible objects

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g'value less than 0.75; 2) at least 0.6 ppm ester groups as determined byH NMR; 3) a Tm of 100&#xb0; C. or more; 4) an Mw of 50,000 g/mol or more, as determined by GPC; 5) an average number of carbon atoms between branch points of 70 or more as determined byH NMR.

Modified polyethylene blown film compositions having excellent bubble stability

The present disclosure is directed generally to synthetic organic fiber pellets, methods for making such pellets, and methods of using such pellets for making fiber reinforced polypropylene composite resins. The synthetic organic fiber pellets include at least 80 wt % of a synthetic organic fiber chosen from polyalkylene terephthalates, polyalkylene naphthalates, polyamides, polyolefins, polyacrylonitrile, and combinations thereof, and from 2 to 20 wt % of one or more waxes. The synthetic organic fiber pellets are produced using a pelleting press process. Also provided is a method for making fiber reinforced polypropylene composite pellets including feeding into a compounding extruder at least 25 wt % polypropylene based polymer, from 5 to 60 wt % of synthetic organic fiber in the form of the synthetic organic fiber pellets, and from 0 to 60 wt % inorganic filler; extruding the polypropylene based resin, the fiber pellets, and the inorganic filler through the compounding extruder to form a fiber reinforced polypropylene composite melt; cooling the fiber reinforced polypropylene composite melt to form a solid fiber reinforced polypropylene composite; and pelletizing the solid fiber reinforced polypropylene composite to form fiber reinforced polypropylene composite pellets; wherein an article molded from the composite pellets has a flexural modulus of at least 2.07 GPa and exhibits ductility during instrumented impact testing. Articles molded from the fiber reinforced polypropylene composite pellets find application as automotive parts, household appliance parts, or boat hulls.

Fiber pellets method of making, and use in making fiber reinforced polypropylene composites

A fiber reinforced polypropylene composite interior trim cover panel. The interior trim cover panel is molded from a composition comprising at least 30 wt % polypropylene based resin, from 10 to 60 wt % organic fiber, from 0 to 40 wt % inorganic filler, and optionally from 0 to 0.1 wt % lubricant, based on the total weight of the composition, the interior trim cover panel having an outer surface and an underside surface. A process for producing an interior trim cover panel for a vehicle is also provided. The process includes the step of injection molding a composition to form the interior trim cover panel for a vehicle, the interior trim cover panel having at least an outer surface and an underside surface, wherein the composition comprises at least 30 wt % polypropylene, from 10 to 60 wt % organic fiber, from 0 to 40 wt % inorganic filler, and optionally from 0 to 0.1 wt % lubricant, based on the total weight of the composition.

Fiber reinforced polypropylene composite interior trim cover panels

Disclosed are polyethylene ('PE') compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.

Enhanced ESCR of HDPE resins

The present invention is directed generally to fiber reinforced polypropylene compositions, and the beneficial mechanical properties imparted by such compositions. The fiber reinforced polypropylene compositions include at least 25 wt % polypropylene based polymer, from 5 to 60 wt % organic fiber, and from 0 to 60 wt % inorganic filler. Lubricant may also be optionally incorporated into the composition. Articles molded from these fiber reinforced polypropylene compositions have a flexural modulus of at least 300,000 psi, and exhibit ductility during instrumented impact testing. The fiber reinforced polypropylene compositions of the present invention are particularly suitable for making molded articles including, but not limited to household appliances, automotive parts, and boat hulls.

Fiber reinforced polypropylene compositions

Polyethylene blend compositions suitable for injection molding, injection molded articles, and processes for injection molding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.1 to 3.0 g/10 min and a density of from 0.905 to 0.938 g/cm; and a second polyethylene having a melt index of 10 to 500 g/10 min and a density of 0.945 to 0.975 g/cm. The compositions have a density of from 0.920 to 0.973 g/cmand a melt index of 2 to 200 g/10 min, and the density of the second polyethylene is from 0.037 to 0.062 g/cmgreater than the density of the first polyethylene. The compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance, relative to conventional compositions of similar melt index and density. In certain embodiments, the compositions, and articles produced therefrom, also exhibit an improved balance of toughness properties and processability properties.

Polyethylene compositions for injection molding

Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm. The composition has a density of from 0.930 to 0.955 g/cmand a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength. Articles produced from the compositions may also exhibit improved impact resistance properties, enhanced ductile break properties, and improved deflection resistance, which represents a combination of creep and fatigue resistance.

Polyethylene compositions for rotational molding

Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm. The composition has a density of from 0.930 to 0.955 g/cmand a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.

Polyethylene blend compositions suitable for injection molding, injection molded articles, and processes for injection molding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.1 to 3.0 g/10 min and a density of from 0.905 to 0.938 g/cm; and a second polyethylene having a melt index of 10 to 500 g/10 min and a density of 0.945 to 0.975 g/cm. The composition has a density of from 0.920 to 0.973 g/cmand a melt index of 2 to 200 g/10 min, and the density of the second polyethylene is from 0.037 to 0.062 g/cmgreater than the density of the first polyethylene. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance, relative to conventional compositions of similar melt index and density.

A composite having fibers of relatively high elastic modulus embedded in a matrix of relatively low elastic modulus is provided with an interphase of elastic modulus less than the matrix modulus and cohesive energy higher than the matrix cohesive energy. The resulting composite has enhanced strength and toughness.

Composites with interphases and methods of making the same

The invention is directed towards a method for improving hot tack in blown polyethylene films. Accordingly, a nucleating agent and polyethylene are combined to form a melt from which the film is blown. The method comprises forming a melt of polyethylene and a nucleating agent selected from the group consisting of dibenzylidene sorbitol, paramethyldibenzylidene sorbitol, dimethyldibenzylidene sorbitol, ethylene copolymers containing grafted maleic anhydride, ethylene copolymers containing grafted acrylic acid, and mixtures thereof. Polyethylene films having increased hot tack can be blown therefrom.

Method for improving hot tack in blown polyethylene films

Growing community of inventors

Edison, NJ, United States of America

Arnold Lustiger