Patents by Inventor Motaz Khawaji

Motaz Khawaji 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).

  • Patent number: 11484871
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst comprising a chromium compound coordinated with a ligand and a co-catalyst comprising an organoaluminum compound. The ligand may include have a chemical structure according to formula (I), wherein at least one of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, and R12 have the structure according to formula (II) wherein RA, RB, RC, and RD and the remainder of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, and R12 are independently chosen from a hydrogen or a (C1-C50) hydrocarbyl group.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: November 1, 2022
    Assignees: Saudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
    Inventors: Ea Jaseer, Samir Barman, Nestor Garcia Villalta, Motaz Khawaji, Wei Xu, Fahad Almalki
  • Patent number: 11458463
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L?L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more polyether alcohols or one or more non-polymeric ethers.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: October 4, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Motaz Khawaji, Sohel Shaikh, Wei Xu
  • Patent number: 11458462
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L?L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more chlorinated hydrocarbons, chloro-aluminum alkyls, or combinations of these.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: October 4, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Sohel Shaikh, Motaz Khawaji, Wei Xu
  • Publication number: 20220288573
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst including a chromium compound coordinated with a ligand and a co-catalyst including an organoaluminum compound. The ligand may have a chemical structure: (R1)(R2)A-X—C(R3)(R4). A and C may be phosphorus. X may be B(R5), Si(R5)2, N(R5), wherein R5 is an aryl group substituted with a halogen, halogenated alkyl or a silyl group, and wherein B, or N, or Si is bound to A and C. R1, R2, R3, and R4 may be independently chosen hydrocarbyl groups or heterohydrocarbyl groups.
    Type: Application
    Filed: November 22, 2021
    Publication date: September 15, 2022
    Applicants: Saudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
    Inventors: EA Jaseer, Samir Barman, Nestor Garcia Villalta, Motaz Khawaji, Wei Xu
  • Patent number: 11440980
    Abstract: According to one or more embodiments disclosed herein, the amount of one or more contaminants in an initial ultra high molecular weight polyethylene composition may be reduced by a method including contacting the initial ultra high molecular weight polyethylene composition with an acid to form a processed ultra high molecular weight polyethylene composition. The initial ultra high molecular weight polyethylene composition may include at least 0.02 wt. % of one or more contaminants. The contacting of the acid with the initial ultra high molecular weight polyethylene composition may be for a time, at a pressure, and at a temperature sufficient to reduce the amount of the one or more contaminants in the initial ultra high molecular weight polyethylene.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: September 13, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Motaz Khawaji, Faisal Melebari, Hussain Al Yami, Wei Xu
  • Patent number: 11440857
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst including a reaction product of a chromium compound and a ligand having the structure according to Formula (II). In Formula (II), A and C may be independently chosen from phosphorus, arsenic, antimony, bismuth, and nitrogen; B may be a linking group between A and C; and R1, R2, R3, and R4 may be independently chosen from a (C1-C50) hydrocarbyl or a (C1-C50) heterohydrocarbyl. The catalyst system may include a co-catalyst including a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more quaternary salts; one or more organic acids, organic acid salts, esters, anhydrides, or combinations of these; one or more chlorinated hydrocarbons, chloro-aluminum alkyls, or combinations of these; one or more polyether alcohols; or one or more non-polymeric ethers.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: September 13, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Motaz Khawaji, Sohel Shaikh, Wei Xu
  • Publication number: 20220280927
    Abstract: A catalyst system that may reduce polymeric fouling may include at least one titanate compound, at least one aluminum compound, and an antifouling agent. The antifouling agent may be chosen from one or more of a phosphonium or phosphonium salt; a sulfonate or a sulfonate salt; a sulfonium or sulfonium salt; an ester including a cyclic moiety; an anhydride; a polyether; and a long-chained amine-capped compound. The catalyst system may further include a non-polymeric ether compound.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Applicants: Saudi Arabian Oil Company, Sumitomo Chemical Company, Limited
    Inventors: Sohel Shaikh, Motaz Khawaji, Hussain Al Yami, Wei Xu
  • Publication number: 20220280926
    Abstract: A catalyst system that may reduce polymeric fouling may include at least one titanate compound, at least one aluminum compound, and an antifouling agent. The antifouling agent may be chosen from one or more of a phosphonium or phosphonium salt; a sulfonate or a sulfonate salt; a sulfonium or sulfonium salt; an ester including a cyclic moiety; an anhydride; a polyether; and a long-chained amine-capped compound. The catalyst system may further include a non-polymeric ether compound.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Applicants: Saudi Arabian Oil Company, Sumitomo Chemical Company, Limited
    Inventors: Sohel Shaikh, Motaz Khawaji, Hussain Al Yami, Wei Xu
  • Publication number: 20220241746
    Abstract: A multi-zoned fluidized bed reactor system may include a multi-zoned fluidized bed reactor and at least one catalyst regeneration loop. The multi-zoned fluidized bed reactor comprising a housing, a fluid bed distributor plate positioned at the bottom of the housing, a fluidized catalyst bed disposed vertically above the fluid bed distributor plate and a condensation zone disposed vertically above the fluidized catalyst bed. The at least one catalyst regeneration loop may be fluidly coupled to the stripping zone and a reaction zone. The at least one catalyst regeneration loop may be operable to withdraw a portion of spent catalyst from the stripping zone, regenerate the portion of spent catalyst to produce regenerated catalyst, and return the regenerated catalyst to the reaction zone. A method of regenerating catalyst in a multi-zoned fluidized bed reactor may include passing a portion of spent catalyst from a stripping zone to a catalyst regeneration loop.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 4, 2022
    Applicants: Saudi Arabian Oil Company, King Abdullah University of Science and Technology
    Inventors: Motaz Khawaji, Ola Ali, Khalid Al-Majnouni, Wei Xu, Jorge Gascon Sabate
  • Publication number: 20220168718
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L?L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more chlorinated hydrocarbons, chloro-aluminum alkyls, or combinations of these.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Applicant: Saudi Arabian Oil Company
    Inventors: Sohel Shaikh, Motaz Khawaji, Wei Xu
  • Publication number: 20220168716
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L?L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more organic acids, organic acid salts, esters, anhydrides, or combinations of these.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Inventors: Sohel Shaikh, Motaz Khawaji, Wei Xu
  • Publication number: 20220169583
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst including a reaction product of a chromium compound and a ligand having the structure according to Formula (II). In Formula (II), A and C may be independently chosen from phosphorus, arsenic, antimony, bismuth, and nitrogen; B may be a linking group between A and C; and R1, R2, R3, and R4 may be independently chosen from a (C1-C50) hydrocarbyl or a (C1-C50) heterohydrocarbyl. The catalyst system may include a co-catalyst including a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more quaternary salts; one or more organic acids, organic acid salts, esters, anhydrides, or combinations of these; one or more chlorinated hydrocarbons, chloro-aluminum alkyls, or combinations of these; one or more polyether alcohols; or one or more non-polymeric ethers.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Applicant: Saudi Arabian Oil Company
    Inventors: Motaz Khawaji, Sohel Shaikh, Wei Xu
  • Publication number: 20220168715
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L?L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more quaternary salts.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Applicant: Saudi Arabian Oil Company
    Inventors: Sohel Shaikh, Motaz Khawaji, Wei Xu
  • Publication number: 20220168719
    Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L?L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more polyether alcohols or one or more non-polymeric ethers.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Applicant: Saudi Arabian Oil Company
    Inventors: Motaz Khawaji, Sohel Shaikh, Wei Xu
  • Publication number: 20220111375
    Abstract: According to one embodiment, a catalyst system that reduces polymeric fouling may include at least one chromium compound, at least one aluminum compound, and at least one antifouling agent or a derivative thereof. The antifouling agent may have a structure including a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. One or more of the chemical groups R1, R2, and R3 may be antifouling groups having the structure —O((CH2)nO)mR4, a phosphonium or phosphonium salt, a sulfonate or sulfonate salt, a sulfonium or sulfonium salt, an ester, an anhydride, a polyether, or a long-chained amine-capped compound, where n is an integer from 1 to 20, m is an integer from 1 to 100, and R4 is a hydrocarbyl group. The chemical groups R1, R2, or R3 that do not include an antifouling group, if any, may be hydrocarbyl groups.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 14, 2022
    Applicant: Saudi Arabian Oil Company
    Inventors: Sohel Shaikh, Motaz Khawaji, Zhonglin Zhang, Wei Xu
  • Publication number: 20220025078
    Abstract: According to one or more embodiments disclosed herein, the amount of one or more contaminants in an initial ultra high molecular weight polyethylene composition may be reduced by a method including contacting the initial ultra high molecular weight polyethylene composition with an acid to form a processed ultra high molecular weight polyethylene composition. The initial ultra high molecular weight polyethylene composition may include at least 0.02 wt. % of one or more contaminants. The contacting of the acid with the initial ultra high molecular weight polyethylene composition may be for a time, at a pressure, and at a temperature sufficient to reduce the amount of the one or more contaminants in the initial ultra high molecular weight polyethylene.
    Type: Application
    Filed: July 22, 2020
    Publication date: January 27, 2022
    Applicant: Saudi Arabian Oil Company
    Inventors: Motaz Khawaji, Faisal Melebari, Hussain Al Yami, Wei Xu
  • Publication number: 20210355049
    Abstract: According to one embodiment, a catalyst system that reduces polymeric fouling may comprise at least one titanate compound, at least one aluminum compound, and at least one antifouling agent or a derivative thereof. The antifouling agent may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. One or more of the chemical groups R1, R2, and R3 may be antifouling groups comprising the structure —O((CH2)nO)mR4, where n is an integer from 1 to 20, m is an integer from 1 to 100, and R4 is a hydrocarbyl group. The chemical groups R1, R2, or R3 that do not comprise the antifouling group, if any, may be hydrocarbyl groups.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 18, 2021
    Applicants: Saudi Arabian Oil Company, Sumitomo Chemical Company, Limited
    Inventors: Motaz Khawaji, Hussain Al Yami, Sohel Shaikh, Wei Xu, Kenji Sogo
  • Publication number: 20210347712
    Abstract: According to one embodiment, a catalyst system that reduces polymeric fouling may comprise at least one titanate compound, at least one aluminum compound, and at least one antifouling agent or a derivative thereof. The antifouling agent may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. One or more of the chemical groups R1, R2, and R3 may be antifouling groups comprising the structure —O((CH2)nO)mR4, where n is an integer from 1 to 20, m is an integer from 1 to 100, and R4 is a hydrocarbyl group. The chemical groups R1, R2, or R3 that do not comprise the antifouling group, if any, may be hydrocarbyl groups.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 11, 2021
    Applicants: Saudi Arabian Oil Company, Sumitomo Chemical Company, Limited
    Inventors: Motaz Khawaji, Hussain Al Yami, Sohel Shaikh, Wei Xu, Kenji Sogo
  • Patent number: 11104621
    Abstract: According to one embodiment, a catalyst system that reduces polymeric fouling may comprise at least one titanate compound, at least one aluminum compound, and at least one antifouling agent or a derivative thereof. The antifouling agent may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. One or more of the chemical groups R1, R2, and R3 may be antifouling groups comprising the structure —O((CH2)nO)mR4, where n is an integer from 1 to 20, m is an integer from 1 to 100, and R4 is a hydrocarbyl group. The chemical groups R1, R2, or R3 that do not comprise the antifouling group, if any, may be hydrocarbyl groups.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: August 31, 2021
    Assignees: Saudi Arabian Oil Company, Sumitomo Chemical Company, Limited
    Inventors: Motaz Khawaji, Hussain Al Yami, Sohel Shaikh, Wei Xu, Kenji Sogo
  • Publication number: 20170197892
    Abstract: According to one embodiment, a catalyst system that reduces polymeric fouling may comprise at least one titanate compound, at least one aluminum compound, and at least one antifouling agent or a derivative thereof. The antifouling agent may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. One or more of the chemical groups R1, R2, and R3 may be antifouling groups comprising the structure —O((CH2)nO)mR4, where n is an integer from 1 to 20, m is an integer from 1 to 100, and R4 is a hydrocarbyl group. The chemical groups R1, R2, or R3 that do not comprise the antifouling group, if any, may be hydrocarbyl groups.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 13, 2017
    Applicants: Saudi Arabian Oil Company, Sumitomo Chemical Company, Limited
    Inventors: Motaz Khawaji, Hussain Al Yami, Sohel Shaikh, Wei Xu, Kenji Sogo