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Nova Chemicals international S a patents


Recent patent applications related to Nova Chemicals international S a. Nova Chemicals international S a is listed as an Agent/Assignee. Note: Nova Chemicals international S a may have other listings under different names/spellings. We're not affiliated with Nova Chemicals international S a, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Nova Chemicals international S a-related inventors


Ziegler-natta catalyst for high temperature polymerization

The various embodiments of the invention provide, a magnesium titanium polymerization procatalyst, methods for making and using the same.... Nova Chemicals international S a

Low pressure gas release hydrothermal and peroxide treatment of odh catalyst

The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step. In some embodiments, the activity and reproducibility of the catalyst is improved by conducting the hydrothermal step while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream... Nova Chemicals international S a

Catalyst modification to control polymer architecture

By controlling the ratio of catalyst components or the type of activator the homogeneity of a polymer produced using a single site catalyst may be improved.... Nova Chemicals international S a

Nucleated polyethylene blends and their use in molded articles

A polyethylene blend comprises a nucleated polyethylene homopolymer composition and an un-nucleated or nucleated bimodal polyethylene copolymer.... Nova Chemicals international S a

Barrier film for food packaging

Barrier films are prepared from a blend of two high density polyethylene blend components and a high performance organic nucleating agent. The two high density polyethylene blend components have substantially different melt indices. Large reductions in the moisture vapor transmission rate of the film are observed in the presence of... Nova Chemicals international S a

Controlled pressure hydrothermal treatment of odh catalyst

The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step the activity and reproducibility of the catalyst is improved by conduction the hydrothermal step at higher pressures while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream... Nova Chemicals international S a

Ethylene/1-butene copolymers with enhanced resin processability

Ethylene/1-butene copolymers made with a single site catalyst system have high melt strength and good processability.... Nova Chemicals international S a

Inherently safe oxygen/hydrocarbon gas mixer

Provided herein is a gas mixer for the safe mixing of a hydrocarbon containing gas with a gaseous oxidant. The gas mixer and method for mixing described includes a closed mixing vessel where bubbles of gas injected at the bottom of the vessel are mixed during their rise to the... Nova Chemicals international S a

Hinged component made from high density unimodal polyethylene

A hinged component comprises a polyethylene composition having a density of from 0.940 to 0.965 g/cm3, a melt index of less than 30 g/10 min, a molecular weight distribution Mw/Mn of less than 5.0 and a unimodal profile in a gel permeation chromatograph.... Nova Chemicals international S a

Optimized agitator system for production of polyolefin

The various embodiments of the present invention relate to a polymerization reactor where the agitator mixing performance is optimized for use with a high activity catalyst and methods for developing the same.... Nova Chemicals international S a

Catalyst for ethane odh

A catalyst for oxidative dehydrogenation (ODH) of ethane with an empirical formula Mo—V—Te—Nb—Pd—O produced using a process comprising impregnation of the Pd component on the surface of the catalyst following a calcination step using a Pd compound free of halogens. The resulting catalyst can be used in both diluted and... Nova Chemicals international S a

Closure having excellent organoleptic performance

A closure comprising a polyethylene copolymer which has a density of from 0.940 to 0.962 g/cm3, a melt index I2 of less 1.5 g/10 min, high levels of unsaturation and low catalyst component residues, has excellent organoleptic properties.... Nova Chemicals international S a

U-bends with the reduced pressure losses to fluid distributing networks

Provided herein are components for a fluid network modified for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs.... Nova Chemicals international S a

Furnace coil modified fins

The present disclosure provides for thick fins on the surface of coils or tubes in a steam cracking furnace. The fins have a thickness at their base from ¼ to ¾ of the radius of the furnace tube. The fins have grooves or protuberances on not less than about 10%... Nova Chemicals international S a

High modulus single-site lldpe

Linear low density polyethylene (LLDPE) that is prepared with a single site catalyst has relatively low modulus in comparison to a polyethylene of similar melt index and density made with a conventional Zeigler Natta catalyst. Films that are prepared from polyethylene having a low modulus have a soft and flexible... Nova Chemicals international S a

Transfer line

A transfer line between the outlet of a steam cracker and the inlet for the quench system has metallic or ceramic inserts having a pore size from about 0.001 to about 0.5 microns inside the line forming a gas tight barrier with the inner surface of the line and having... Nova Chemicals international S a

Ethylene oligomerization with mixed ligands

The selective oligomerization of ethylene to produce a mixture comprising octene and hexene is conducted in the presence of a catalyst system comprising a source of chromium; two different P—N—P ligands and an activator. The phosphorus atoms of both ligands have ortho-fluoro phenyl substituents. The nitrogen atom of the first... Nova Chemicals international S a

Mdo multilayer film

A multilayer film having Machine Direction Orientation (MDO) is prepared by first co-extruding a multilayer film, then stretching the multilayer film in the machine direction at a temperature lower than the melting point of the polyethylene resin that is used to prepare the film. At least one layer of the... Nova Chemicals international S a

Rotomolded articles

This disclosure relates to rotomolded articles, having a wall structure, where the wall structure contains at least one layer containing an ethylene interpolymer product, or a blend containing an ethylene interpolymer product and an ethylene polymer, where the ethylene interpolymer product has a Dilution Index (Yd) greater than 0 and... Nova Chemicals international S a

Polyolefins

The present invention provides a polyolefin polymer having a bimodal composition with a reduced higher molecular weight component prepared using a self-supported phosphinimine single site catalyst. The catalyst is prepared by precipitating an emulsion of the activated catalyst from a perfluoroalkane continuous phase resulting in spherical catalyst particles having a... Nova Chemicals international S a

Passivated supports: catalyst, process, product and film

Ethylene copolymers made in the gas phase using a phosphinimine based single site catalyst supported on a passivated inorganic oxide support. The ethylene copolymers have a relatively narrow molecular weight distribution and good rheological parameters.... Nova Chemicals international S a

Blow molding composition and process

This invention provides a blow molding composition comprising a high molecular weight, chromium catalyzed ethylene copolymer (also referred to as a polyethylene resin) and a nucleating agent. The composition enables a more efficient blow molding process by reducing the number of malformed/rejected parts that are produced when the process is... Nova Chemicals international S a

Self supported phosphinimine catalyst

In some embodiments provided herein is a self-supported phosphinimine single site catalyst having a molar ratio of Al from the activator (MAO) to the active metal in the catalyst from 5:1 to 30:1. The catalyst is prepared by precipitating an emulsion of the activated catalyst from a perfluoroalkane continuous phase... Nova Chemicals international S a

Ethylene copolymers produced with single site catalyst

Embodiments of the invention described herein relate to a polyethylene polymer composition suitable for use in the manufacture of packaging articles, flexible films and/or sheets. In one embodiment, the copolymer comprises a polyethylene resin with density 0.918 g/cm3 to about 0.935 g/cm3, G′ at G″(500 Pa) value, as determined from... Nova Chemicals international S a

Very low density polyethylene produced with single site catalyst

Provided herein are VLDPE polymer compositions suitable for use in the manufacture of flexible films or sheets. In one embodiment, the copolymer comprises a polyethylene VLDPE resin with Mz/Mw of greater than 2, CDBI50 of greater than 55 and a single melting peak in DSC measurement. The polymer compositions disclosed... Nova Chemicals international S a

High conversion and selectivity odh process

Ethane may be catalytically oxidatively dehydrogenated to ethylene at high conversions and high selectivity in a circulating fluidized bed (CFB) reactor in the presence of oxygen in the feed in an amount above the flammability limit. The reactor has an attached regeneration reactor to regenerate the catalyst and cycle back... Nova Chemicals international S a

Improved control over catalyst particulate feed into an olefin polymerization reactor

The feed rate of a supported particulate catalyst through a unit body rotary disc catalyst feeder may be controlled by controlling the feed of nitrogen to the upper surface of the rotary disc.... Nova Chemicals international S a

Polyethylene compositions and closures made from them

A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability, stiffness, and environmental stress crack resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture... Nova Chemicals international S a

Hot fill process with closures made from high density polyethylene compositions

High density (density ≧0.950 g/cm3) polyethylene compositions for use in hot fill closures and processes.... Nova Chemicals international S a

Hot fill process with closures made from bimodal polyethylene compositions

Bimodal polyethylene compositions for use in hot-fill closures and processes.... Nova Chemicals international S a

Hot fill process with closures made from high density unimodal polyethylene

High density (density ≧0.945 g/cm3) unimodal polyethylene compositions for use in hot-fill closures and processes.... Nova Chemicals international S a

Industrial furnace

b) adjusting the mass flow rate or the volume flow rate of air from said one or more fans.... Nova Chemicals international S a

High density rotomolding resin

The present disclosure provides high density polyethylene resins having good low temperature impact resistance. The resins are suitable for use in rotomolding application for large parts. The resin is a bi- or trimodal resin produced using solution phase polymerization in the presence of a single site catalyst.... Nova Chemicals international S a

Mitigation of wax levels in the high pressure low density polyethylene process

In the high pressure polymerization of ethylene homopolymers or copolymers, conditions in the high pressure recycle system may lead to the build-up of low molecular weight oligomers and waxes. Sequentially draining knock-out pots, located downstream of a high pressure separator, at regular intervals can reduce the build-up of low molecular... Nova Chemicals international S a

Phenol free stabilization of polyethylene

This invention provides a process for the stabilization of thermoplastic polyolefins during melt processing operations. The stabilizer package of this invention is “phenol free” and comprises at least two selected phosphite stabilizers. In some embodiments, the process is suitable for the manufacture of polyethylene film.... Nova Chemicals international S a

05/18/17 / #20170136436

Controlling local fluid age in a stirred reactor

In a stirred tank chemical reactor the mean age of the reactor contents affects a number of properties of the product, including for example the homogeneity of the product. The mean average age of the reactor contents can be determined by constructing a transparent model of the reactor and filling... Nova Chemicals international S a

05/18/17 / #20170137722

Furnace tube radiants

A substantially linear ceramic or metallic radiant of ellipsoidal or polygonal cross section is placed proximate furnace tubes or coils in the radiant section of a fired heater to increase the radiant heat directed to the surface of the tubes or coils.... Nova Chemicals international S a

05/11/17 / #20170130040

Barrier film for food packaging

Barrier films are prepared from a blend of two high density polyethylene blend components and a high performance organic nucleating agent. The two high density polyethylene blend components have substantially different melt indices. Large reductions in the moisture vapor transmission rate of the film are observed in the presence of... Nova Chemicals international S a

05/04/17 / #20170120499

Extrusion process for polyethylene polymers

A method for the improved extrusion of polyethylene polymers comprising passing polyethylene through a single stage, twin screw extruder comprising a solid polymer conveying zone, a polymer melting zone, a dispersive mixing zone, and a distributive mixing/pumping zone, in which the throughput and screw speed are optimized to reduce the... Nova Chemicals international S a

04/20/17 / #20170106346

Complex comprising oxidative dehydrogenation unit

Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the... Nova Chemicals international S a

04/20/17 / #20170107365

Radiation crosslinked polyethylene hinge

Polyethylene living hinges used in “snap top” lids for condiments and the like may be electron bean irradiated to partially crosslink the polyethylene to produce a hinge having an improvement in the number of opening and closing cycles until failure of not less than 30%. The irradiated lids may be... Nova Chemicals international S a

04/20/17 / #20170107429

Pinned furnace tubes

In an embodiment of the invention, furnace tubes for cracking hydrocarbons having a longitudinal array of pins having i) a maximum height from 0.5-1.3 cm; ii) a contact surface with the tube, having an area from 0.1%-10% of the tube external surface area iii) a uniform cross section along the... Nova Chemicals international S a

04/13/17 / #20170101354

Self cleaning reactor system

This invention relates to a self cleaning reactor and to a process for the oligomerization of ethylene that employs a self-cleaning reactor. The reactor includes a mass of inert, particulate cleaning bodies that are entrained by the liquid in the reactor and scour the internal surfaces of the reactor during... Nova Chemicals international S a

03/23/17 / #20170081261

Inherently safe odh operation

In the operation of an oxidative dehydrogenation (ODH) process, it is desirable to remove oxygen in the product stream for a number of reasons, including to reduce oxidation of the product. This may be achieved by having several pre-reactors upstream of the main reactor having a catalyst system containing labile... Nova Chemicals international S a

03/16/17 / #20170073482

Ethylene interpolymer films

This disclosure relates to multilayer films having improved caulkability. These multilayer films have at least one layer containing an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Yd) greater than 0; total catalytic metal ≧3.0 ppm; ≧0.03 terminal... Nova Chemicals international S a

03/02/17 / #20170057151

Removable extruder adapter for improved feed

Methods for altering feed throat passageway size, shape and position in a pellet fed extruder by means of a removable adapter are disclosed. Adapters chosen for optimal extrusion performance may be removed with little effort in a shorter time and may be more cost effective than other methods for optimization... Nova Chemicals international S a

02/23/17 / #20170050178

Oxidative dehydrogenation catalyst

Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per... Nova Chemicals international S a

02/23/17 / #20170051091

Method for altering melt flow ratio of ethylene polymers

A method for altering the melt flow ratio (MFR) of ethylene copolymers made in a gas phase reactor using a supported Ziegler-Natta catalyst treated with a catalyst modifier. The method involves changing the amount of the catalyst modifier added to the supported Ziegler-Natta polymerization catalyst to effect changes in the... Nova Chemicals international S a

02/23/17 / #20170051138

Polyethylene compositions, process and closures

A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability and ESCR properties. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and... Nova Chemicals international S a

02/16/17 / #20170044357

Rotomolded articles

This disclosure relates to rotomolded articles, having a wall structure, where the wall structure contains at least one layer containing an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Yd) greater than 0; total catalytic metal ≧3.0 ppm;... Nova Chemicals international S a

02/09/17 / #20170037162

Catalyst modification to control polymer architecture

By controlling the ratio of catalyst components or the type of activator the homogeneity of a polymer produced using a single site catalyst may be improved.... Nova Chemicals international S a

02/09/17 / #20170037163

Ziegler-natta catalyst for high temperature polymerization

The various embodiments of the invention provide, a magnesium titanium polymerization procatalyst, methods for making and using the same.... Nova Chemicals international S a

02/09/17 / #20170037228

Caps and closures

This disclosure relates to caps and closures manufactured from an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Yd) greater than 0; total catalytic metal≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless... Nova Chemicals international S a

02/09/17 / #20170037230

Dilution index

This disclosure relates to ethylene interpolymer compositions. Specifically, ethylene interpolymer products having: a Dilution Index (Yd) greater than 0; total catalytic metal ≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (Xd) greater than 0. The disclosed ethylene interpolymer products have a melt index... Nova Chemicals international S a

02/09/17 / #20170037233

Hdpe articles

This disclosure relates to manufactured articles containing ethylene interpolymers. Specifically, films, containers and lids comprising at least one layer of an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Yd) greater than 0; total catalytic metal ≧3.0 ppm;... Nova Chemicals international S a

02/02/17 / #20170029533

Reduction of fouling in high pressure reactors

The Application of equations of state to experimental and literature data permits the formation of a model and phase diagram(s) that show under what conditions polyethylene is likely to precipitate out of a high pressure solution of polyethylene in supercritical ethylene. This then permits a better definition to run a... Nova Chemicals international S a

01/26/17 / #20170022427

Serpentine fluid reactor components

Some embodiments of the present invention provide components for a serpentine fluid reactor which is optimized for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs. The components are designed by computer modeling the components individually and collectively in which... Nova Chemicals international S a

01/19/17 / #20170015801

Shrink films

Films suitable for shrink film applications are disclosed comprising at least one heterogeneous ethylene interpolymer having a short chain branching distribution profile index, DPISCB, that satisfies the formula: −1≦DPISCB≦1. The at least one heterogeneous ethylene interpolymer has a density from about 0.911 g/cm3 to about 0.942 g/cm3, a melt index... Nova Chemicals international S a

01/05/17 / #20170002186

Barrier film for food packaging

Barrier films are prepared from a blend of two high density polyethylene blend components and a high performance organic nucleating agent. The two high density polyethylene blend components have substantially different melt indices. Large reductions in the moisture vapor transmission rate of the film are observed in the presence of... Nova Chemicals international S a








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