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公开(公告)号：US20170363605A1
公开(公告)日：2017-12-21
申请号：US15486016
申请日：2017-04-12
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Hasnain Rangwalla
CPC classification number: G01N33/442 , B01D15/161 , B01D15/1878 , B01D15/34 , B01D15/424
Abstract: New metrics are disclosed for characterizing polyethylene copolymers which can be computed from the Cross-Fractionation Chromatography data of these polymers. These metrics are able to quantify the Broad Orthogonal Composition Distribution (BOCD) character of the polymers, and they can be used to discriminate polymers with an enhanced BOCD character from polymers that have the BOCD character to a lesser extent or from polymers that have the conventional molecular weight distribution and/or branching distribution.
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Patent Agency Ranking
公开(公告)号：US11649331B2
公开(公告)日：2023-05-16
申请号：US17309173
申请日：2019-11-13
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Ching-Tai Lue , Dongming Li , Hasnain Rangwalla , Matthew F. Yott
CPC classification number: C08J5/18 , C08L23/0815 , B29C48/0018 , C08J2323/08 , C08L2203/162 , C08L2205/025 , C08L2205/035
Abstract: Provided herein are polyethylene films made of the polyethylene blends having improved properties, particularly in Elmendorf tear and puncture resistance. The polyethylene blends include two primary polyethylene blends.
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公开(公告)号：US20190040168A1
公开(公告)日：2019-02-07
申请号：US16016161
申请日：2018-06-22
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Matthew W. Holtcamp , Xuan Ye , Charles J. Harlan , Michelle E Titone , Matthew S Bedoya , Subramaniam Kuppuswamy , Hasnain Rangwalla
IPC: C08F210/16
Abstract: The present invention provides a supported catalyst system comprising: a bridged group 4 metallocene compound, an iron compound, specifically a 2,6-bis(imino)pyridyl iron complex, a support material and an activator. The present invention further provides a process for polymerization of monomers (such as olefin monomers) comprising contacting one or more monomers with the above supported catalyst systems.
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公开(公告)号：US20210054111A1
公开(公告)日：2021-02-25
申请号：US17090523
申请日：2020-11-05
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Matthew W. Holtcamp , Subramaniam Kuppuswamy , Matthew S. Bedoya , Kevin A. Stevens , Ching-Tai Lue , Hasnain Rangwalla
IPC: C08F4/6592 , C08F210/16 , C08F4/659 , C08F4/646 , C08F4/642
Abstract: A mixed metallocene catalyst system can comprise at least one metallocene catalyst compound comprising a structure represented by formula (A) below and optionally at least one other metallocene catalyst compound having a structure represented by formula (B) below: A mixed metallocene catalyst system can additionally include a non-coordinating anion type activator comprising a supported alumoxane or aluminum alkyl, and optionally a scavenger. A process for making a polymeric product can comprise: contacting a C2-C22 alpha-olefin feed with the catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture. A polymer product can be made by the process.
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公开(公告)号：US20190284312A1
公开(公告)日：2019-09-19
申请号：US16250624
申请日：2019-01-17
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Matthew W. Holtcamp , Subramaniam Kuppuswamy , Matthew S. Bedoya , Kevin A. Stevens , Ching-Tai Lue , Hasnain Rangwalla
IPC: C08F4/6592 , C08F210/16 , C08F4/659 , C08F4/646 , C08F4/642
Abstract: A mixed metallocene catalyst system can comprise at least one metallocene catalyst compound comprising a structure represented by formula (A) below and optionally at least one other metallocene catalyst compound having a structure represented by formula (B) below: A mixed metallocene catalyst system can additionally include a non-coordinating anion type activator comprising a supported alumoxane or aluminum alkyl, and optionally a scavenger. A process for making a polymeric product can comprise: contacting a C2-C22 alpha-olefin feed with the catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture. A polymer product can be made by the process.
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公开(公告)号：US10302621B2
公开(公告)日：2019-05-28
申请号：US15486016
申请日：2017-04-12
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Hasnain Rangwalla
Abstract: New metrics are disclosed for characterizing polyethylene copolymers which can be computed from the Cross-Fractionation Chromatography data of these polymers. These metrics are able to quantify the Broad Orthogonal Composition Distribution (BOCD) character of the polymers, and they can be used to discriminate polymers with an enhanced BOCD character from polymers that have the BOCD character to a lesser extent or from polymers that have the conventional molecular weight distribution and/or branching distribution.
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