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公开(公告)号：US20230174693A1
公开(公告)日：2023-06-08
申请号：US17922923
申请日：2021-05-07
Applicant: Dow Global Technologies LLC
Inventor： Rafael Huacuja , Richard Keaton , Jerzy Klosin , Sukrit Mukhopadhyay , David M. Pearson , Todd D. Senecal , William H.H. Woodward
IPC: C08F210/16 , C07F5/02 , C07F7/08
CPC classification number: C08F210/16 , C07F5/027 , C07F7/0814
Abstract: Processes of polymerizing olefins. The process includes polymerizing contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presence of a catalyst system comprising a procatalyst and a bimetallic activator complex. The bimetallic activator complex includes an anion and a countercation. The anion having a structure according to formula (I).
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公开(公告)号：US11149117B2
公开(公告)日：2021-10-19
申请号：US16354114
申请日：2019-03-14
Applicant: Dow Global Technologies LLC
Inventor： David S. Laitar , David A. Babb , Carlos M. Villa , Richard Keaton , Jean-Paul Masy
Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
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Patent Agency Ranking
3.发明申请公开(公告)号：US20180171042A1
公开(公告)日：2018-06-21
申请号：US15736196
申请日：2016-06-21
Applicant: Dow Global Technologies LLC
Inventor： Sean Ewart , Teresa Karjala , Mehmet Demirors , Richard Keaton , Sarat Munjal , Christopher Eddy
CPC classification number: C08F10/02 , C07C15/18 , C08F2/001 , C08F2/34 , C08F4/76 , C08F110/02 , C08F210/02
Abstract: A composition comprising an ethylene-based polymer is made by a process comprising the steps of: (A) contacting under first polymerization conditions at least ethylene and at least one molecular catalyst to form a first ethylene-based polymer, and (B) contacting under second polymerization conditions the first ethylene-based polymer of (A) with at least additional ethylene and a carbon-carbon free radical initiator of Structure (I): wherein R1, R2, R3, R4, R5 and R6 are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the proviso that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, to form the composition.
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公开(公告)号：US10647789B2
公开(公告)日：2020-05-12
申请号：US15736196
申请日：2016-06-21
Applicant: Dow Global Technologies LLC
Inventor： Sean Ewart , Teresa Karjala , Mehmet Demirors , Richard Keaton , Sarat Munjal , Christopher Eddy
IPC: C08F4/64 , C08F4/76 , C08F255/00 , C08F10/02 , C08F2/00 , C08F2/34 , C08F110/02 , C08F210/02 , C07C15/18
Abstract: A composition comprising an ethylene-based polymer is made by a process comprising the steps of: (A) contacting under first polymerization conditions at least ethylene and at least one molecular catalyst to form a first ethylene-based polymer, and (B) contacting under second polymerization conditions the first ethylene-based polymer of (A) with at least additional ethylene and a carbon-carbon free radical initiator of Structure (I): wherein R1, R2, R3, R4, R5 and R6 are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the proviso that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, to form the composition.
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公开(公告)号：US20190211149A1
公开(公告)日：2019-07-11
申请号：US16354114
申请日：2019-03-14
Applicant: Dow Global Technologies LLC
Inventor： David S. Laitar , David A. Babb , Carlos M. Villa , Richard Keaton , Jean-Paul Masy
CPC classification number: C08G65/2663 , C07C41/01 , C07C41/02 , C08G65/269 , C08G65/34
Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
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公开(公告)号：US10233284B2
公开(公告)日：2019-03-19
申请号：US15382519
申请日：2016-12-16
Applicant: Dow Global Technologies LLC
Inventor： David S. Laitar , David A. Babb , Carlos M. Villa , Richard Keaton , Jean-Paul Masy
Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
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公开(公告)号：US20170101506A1
公开(公告)日：2017-04-13
申请号：US15382519
申请日：2016-12-16
Applicant: Dow Global Technologies LLC
Inventor： David S. Laitar , David A. Babb , Carlos M. Villa , Richard Keaton , Jean-Paul Masy
CPC classification number: C08G65/2663 , C07C41/01 , C07C41/02 , C08G65/269 , C08G65/34
Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
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