Patents by Inventor Tony Tikuisis
Tony Tikuisis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240093007Abstract: Polyethylene blends made from recycled polyethylene and a bimodal polyethylene composition are disclosed. The polyethylene blends are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.Type: ApplicationFiled: October 13, 2020Publication date: March 21, 2024Applicant: NOVA Chemicals (International) S.A.Inventors: XiaoChuan WANG, Brant WUNDERLICH, Derek WASYLENKO, Tony TIKUISIS, Gilbert ARNOULD
-
Publication number: 20230340170Abstract: A four component additive package that contains a first phosphite, a second phosphite, a primary antioxidant and an optical brightener is used in combination with a polyethylene that is polymerized with a mixed catalyst system that contains two different types of catalysts. The stabilized polyethylene exhibits improved color performance.Type: ApplicationFiled: August 20, 2021Publication date: October 26, 2023Applicant: NOVA Chemicals (International) S.A.Inventors: Derek Wasylenko, Brian Molloy, Tony Tikuisis, Marcelo Yamane
-
Publication number: 20230202089Abstract: In the manufacture of extruded polymers there are a number of surface defects referred to as sharkskin, snakeskin and orange peel which all generally relate to the rheology of the polymer melt. A severe form of surface defect is “melt fracture” which is believed to result when the shear rate at the surface of the polymer is sufficiently high that the surface of the polymer begins to fracture. That is, there is a slippage of the surface of the extruded polymer relative to the body of the polymer melt. The surface generally can't flow fast enough to keep up with the body of the extrudate and a fracture in the melt occurs generally resulting in a severe loss of surface properties for the extrudate. A polymer extension process is disclosed wherein these undesirable surface defects are eliminated.Type: ApplicationFiled: April 26, 2021Publication date: June 29, 2023Applicant: NOVA Chemicals (International) S.A.Inventors: Derek Wasylenko, P. Scott Chisholm, Tony Tikuisis, Norman Aubee, Fraser Waldie, Douglas Checknita
-
Publication number: 20220289953Abstract: 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, toughness, and environmental stress crack resistance. The polyethylene compositions are suitable for the preparation of rotomolded parts.Type: ApplicationFiled: July 2, 2020Publication date: September 15, 2022Applicant: NOVA Chemicals (International) S.A.Inventors: Celine Bellehumeur, Douglas Checknita, Henry Hay, Derek Wasylenko, Tony Tikuisis
-
Patent number: 11401392Abstract: Barrier films are prepared from a composition comprising 1) a blend of two high density polyethylene HDPE blend components, 2) zinc glycerolate and 3) a dispersion aid/synergist. The two high density polyethylene blend components have substantially different melt indices. It is difficult to properly mix the zinc glycerolate into this HDPE blend. The use of the dispersion aid/synergist improves the water vapor transmission rate (WVTR) of polyethylene film (in comparison to barrier films made with zinc glycerolate, in the absence of the dispersion aid/synergist). The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.Type: GrantFiled: November 13, 2019Date of Patent: August 2, 2022Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Derek Wasylenko, Owen Lightbody, Tony Tikuisis, P. Scott Chisholm
-
Patent number: 10766986Abstract: Rotomolded polyethylene containers that are used to store sulfuric acid can become discolored on the interior surface which is in contact with the acid. This problem may be mitigated by the use of an additive package that contains two primary antioxidants.Type: GrantFiled: August 2, 2018Date of Patent: September 8, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Henry Hay, Derek Wasylenko, Tony Tikuisis, Gilbert Arnould
-
Publication number: 20200157296Abstract: Barrier films are prepared from a composition comprising 1) a blend of two high density polyethylene HDPE blend components, 2) zinc glycerolate and 3) a dispersion aid/synergist. The two high density polyethylene blend components have substantially different melt indices. It is difficult to properly mix the zinc glycerolate into this HDPE blend. The use of the dispersion aid/synergist improves the water vapor transmission rate (WVTR) of polyethylene film (in comparison to barrier films made with zinc glycerolate, in the absence of the dispersion aid/synergist). The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.Type: ApplicationFiled: November 13, 2019Publication date: May 21, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Derek Wasylenko, Owen Lightbody, Tony Tikuisis, P. Scott Chisholm
-
Patent number: 10563045Abstract: The present disclosure relates to systems including a ternary stabilization package that contains a first phosphite, a second phosphite and a primary antioxidant is used in combination with a polyethylene that is polymerized with a mixed catalyst system that contains two different types of catalysts. In some embodiments the stabilized polyethylene exhibits improved color performance.Type: GrantFiled: December 21, 2017Date of Patent: February 18, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Derek Wasylenko, Tony Tikuisis, Owen Lightbody, Fraser Waldie
-
Publication number: 20200040114Abstract: Rotomolded polyethylene containers that are used to store sulfuric acid can become discolored on the interior surface which is in contact with the acid. This problem may be mitigated by the use of an additive package that contains two primary antioxidants.Type: ApplicationFiled: August 2, 2018Publication date: February 6, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Henry Hay, Derek Wasylenko, Tony Tikuisis, Gilbert Arnould
-
Patent number: 10442900Abstract: In some embodiments, this disclosure provides a process for the stabilization of thermoplastic polyolefins during melt processing operations. In some embodiments, the stabilizer package disclosed herein is “phenol free” and contains at least one solid aryl monophosphite and a specific liquid phosphite. The processes disclosed herein are suitable for the manufacture of polyethylene film.Type: GrantFiled: December 18, 2017Date of Patent: October 15, 2019Assignee: NOVA Chemicals (International) S.A.Inventors: Fraser Waldie, Owen Lightbody, Tony Tikuisis, P. Scott Chisholm
-
Publication number: 20190194425Abstract: The present disclosure relates to systems including a ternary stabilization package that contains a first phosphite, a second phosphite and a primary antioxidant is used in combination with a polyethylene that is polymerized with a mixed catalyst system that contains two different types of catalysts. In some embodiments the stabilized polyethylene exhibits improved color performance.Type: ApplicationFiled: December 21, 2017Publication date: June 27, 2019Applicant: NOVA Chemicals (International) S.A.Inventors: Derek Wasylenko, Tony Tikuisis, Owen Lightbody, Fraser Waldie
-
Publication number: 20190134965Abstract: Asphalt shingles are commonly sold in a package that is prepared from polyethylene film. The packages are prone to premature failure after prolonged exposure to ultraviolet (UV) radiation. It has now been found that the addition of carbon black to the film can improve the UV resistance life of polyethylene packaging for asphalt shingles.Type: ApplicationFiled: August 15, 2018Publication date: May 9, 2019Applicant: NOVA Chemicals (International) S.A.Inventors: Fraser Waldie, Tony Tikuisis, P. Scott Chisholm
-
Patent number: 10066093Abstract: 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 the nucleating agent when the melt indices of the two blend components have a ratio of greater than 10/1. The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.Type: GrantFiled: November 14, 2017Date of Patent: September 4, 2018Assignee: NOVA Chemicals (International) S.A.Inventors: Norman Dorien Joseph Aubee, Douglas Checknita, P Scott Chisholm, Patrick Lam, Sarah Marshall, Denny Paul Sauvageau, Tony Tikuisis, Tingting Yu Chuang
-
Publication number: 20180186942Abstract: In some embodiments, this disclosure provides a process for the stabilization of thermoplastic polyolefins during melt processing operations. In some embodiments, the stabilizer package disclosed herein is “phenol free” and contains at least one solid aryl monophosphite and a specific liquid phosphite. The processes disclosed herein are suitable for the manufacture of polyethylene film.Type: ApplicationFiled: December 18, 2017Publication date: July 5, 2018Applicant: NOVA Chemicals (International) S.A.Inventors: Fraser Waldie, Owen Lightbody, Tony Tikuisis, P. Scott Chisholm
-
Patent number: 9963561Abstract: 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.Type: GrantFiled: November 16, 2016Date of Patent: May 8, 2018Assignee: NOVA Chemicals (International) S.A.Inventors: Fraser D. Cole Waldie, Owen C. Lightbody, Tony Tikuisis, P. Scott Chisholm
-
Patent number: 9951212Abstract: Polyethylene is often stabilized with the combination of a primary antioxidant (such as a hindered phenol, a hydroxylamine or a lactone) and a secondary antioxidant (such as a phosphonite, a monophosphite, or a diphosphite). The diphosphite additives are not completely compatible with “linear” polyethylene. This results in “blooming” of the diphosphite to the surface of the finished polyethylene part or polyethylene film. The use of a preblend of ethylene vinyl alcohol (EVOH) and diphosphite mitigates this problem.Type: GrantFiled: April 14, 2016Date of Patent: April 24, 2018Assignee: NOVA Chemicals (International) S.A.Inventors: Tony Tikuisis, Kam Wah Ho, Nitin Borse
-
Publication number: 20180066130Abstract: 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 the nucleating agent when the melt indices of the two blend components have a ratio of greater than 10/1. The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.Type: ApplicationFiled: November 14, 2017Publication date: March 8, 2018Applicant: NOVA Chemicals (International) S.A.Inventors: Norman Dorien Joseph Aubee, Douglas Checknita, P Scott Chisholm, Patrick Lam, Sarah Marshall, Denny Paul Sauvageau, Tony Tikuisis, Tingting Yu Chuang
-
Patent number: 9850369Abstract: 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 the nucleating agent when the melt indices of the two blend components have a ratio of greater than 10/1. The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.Type: GrantFiled: January 19, 2017Date of Patent: December 26, 2017Assignee: NOVA Chemicals (International) S.A.Inventors: Norman Dorien Joseph Aubee, Douglas Checknita, P Scott Chisholm, Patrick Lam, Sarah Marshall, Denny Paul Sauvageau, Tony Tikuisis, Tingting Yu Chuang
-
Publication number: 20170247526Abstract: 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 operated at high rates. In a preferred embodiment, the malformed parts may be reground and added to “virgin” composition for the production of prime parts.Type: ApplicationFiled: October 28, 2015Publication date: August 31, 2017Applicant: NOVA Chemicals (International) S.A.Inventors: Matthew Botros, Owen Lightbody, Fraser Waldie, Gilbert Arnould, Tony Tikuisis, Anna Rajkovic
-
Publication number: 20170145171Abstract: 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.Type: ApplicationFiled: November 16, 2016Publication date: May 25, 2017Applicant: NOVA Chemicals (International) S.A.Inventors: Fraser D. Cole Waldie, Owen C. Lightbody, Tony Tikuisis, P. Scott Chisholm