公开(公告)号：US20230001395A1

公开(公告)日：2023-01-05

申请号：US17767369

申请日：2020-10-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Gursu Culcu ,  Alexander V. Zabula ,  Alan A. Galuska ,  David A. Cano

IPC: B01J31/12

Abstract: The present disclosure relates to tungsten complexes, catalyst systems including tungsten complexes, and polymerization processes to produce polycycloolefin polymers such as polycyclopentene polymers and polycyclooctene polymers.

公开(公告)号：US20220380274A1

公开(公告)日：2022-12-01

申请号：US17330523

申请日：2021-05-26

Applicant: Chevron Phillips Chemical Company LP

Inventor： Brooke L. Small ,  Orson L. Sydora ,  Ronald D. Knudsen

IPC: C07C2/30 ,  B01J31/12 ,  B01J31/14

Abstract: Process for producing alpha olefins comprising contacting ethylene, a zirconium based catalyst system comprising, a hydrocarbylmetal compound, a chain transfer agent, and optionally an organic reaction medium. Chain transfer agents which can be utilized include a) hydrogen, b) a compound comprising a hydrogen silicon bond, a compound having a hydrogen sulfur bond, a compound having a hydrogen phosphorus bond, or c) a transition metal compound chain transfer agent.

公开(公告)号：US11433368B2

公开(公告)日：2022-09-06

申请号：US16679718

申请日：2019-11-11

Applicant: Hyundai Motor Company ,  KIA MOTORS CORPORATION ,  PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION

Inventor： Woong Pyo Hong ,  Se Hun Kwon ,  Woo Jae Lee

IPC: B01J23/42 ,  B01J31/12 ,  B01J8/40 ,  B01J8/38 ,  B01J37/02 ,  B01J23/40 ,  B01J23/48 ,  B01J23/74 ,  B01J23/72 ,  B01J37/08 ,  B01J37/34 ,  H01M4/90 ,  H01M4/92 ,  H01M4/94 ,  B01J21/18

Abstract: A method for producing a catalyst for a fuel cell comprising: a) injecting carbon particles into a fluidized bed reactor; b) evacuating the fluidized bed reactor to form a base pressure; c) introducing a catalytic metal precursor together with a carrier gas into the fluidized bed reactor to contact the catalytic metal precursor with the carbon particles; d d) purging a purge gas into the fluidized bed reactor; e) introducing a reaction gas into the fluidized bed reactor to attach the catalytic metal precursor to the carbon particles; and f) purging a purge gas into the fluidized bed reactor, wherein, the catalytic metal is attached to the carbon particles in a form of nano-sized spot.

公开(公告)号：US11413610B2

公开(公告)日：2022-08-16

申请号：US16961053

申请日：2019-01-10

Applicant: BASF SE

Inventor： Thomas Schaub ,  Aviel Anaby ,  Mathias Schelwies ,  Rocco Paciello ,  Jonas Schwaben ,  A. Stephen K. Hashmi

IPC: B01J31/18 ,  C07C67/40 ,  B01J31/12

Abstract: The present invention relates to the use of a transition metal catalyst TMC1, which comprises a transition metal M selected from metals of groups 7, 8, 9 and 10 of the periodic table of elements according to IUPAC and a tetradentate ligand of formula I wherein R1 are identical or different and are each an organic radical having from 1 to 40 carbon atoms, and R2 are identical or different and are each an organic radical having from 1 to 40 carbon atoms, as catalyst in processes for formation of compounds comprising at least one carboxylic acid ester functional group —O—C(═O)— starting from at least one primary alcohol and/or hydrogenation of compounds comprising at least one carboxylic acid ester functional group —O—C(═O)—. The present invention further relates to a process for hydrogenation of a compound comprising at least one carboxylic acid ester functional group —O—C(═O)—, to a process for the formation of a compound comprising at least one carboxylic acid ester functional group —O—C(═O)— by dehydrogenase coupling of at least one primary alcohol with a second alcoholic OH-group, to a transition metal complex comprising the tetradentate ligand of formula I and to a process for preparing said transition metal complex.

公开(公告)号：US11370854B2

公开(公告)日：2022-06-28

申请号：US16837667

申请日：2020-04-01

Applicant: W.R. GRACE & CO.-CONN. ,  BRASKEM AMERICA, INC.

Inventor： Binh Thanh Nguyen ,  Jonas Alves Fernandes ,  Vladimir P. Marin ,  Mushtaq Ahmed Patel

IPC: C08F10/06 ,  C08F4/654 ,  C08F110/06 ,  B01J31/12 ,  B01J31/26 ,  B01J31/38

Abstract: A solid catalyst component for use in olefinic polymerization, includes titanium, magnesium, a halogen, and an internal electron donor compound; wherein: the internal electron donor compound is at least one compound represented by Formula (I)):

公开(公告)号：US20220144642A1

公开(公告)日：2022-05-12

申请号：US17599006

申请日：2020-04-03

Applicant: Nanocomp Technologies, Inc.

Inventor： David Gailus ,  Mark Schauer

IPC: C01B32/162 ,  B01J31/12 ,  B01J38/16 ,  B01J38/48

Abstract: Method of producing short carbon nanotube fibers from a carbonaceous gas.

公开(公告)号：US20220143589A1

公开(公告)日：2022-05-12

申请号：US17437907

申请日：2020-09-28

Applicant: LG CHEM, LTD.

Inventor： Kyung Min MIN ,  Seung Young PARK ,  Sung Kyoung KIM ,  Sang Cheol SHIN ,  Won Seok KIM ,  Won Hee WOO

IPC: B01J31/12 ,  C08G64/40 ,  C08F6/02

Abstract: The present invention relates to a method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, and the method of the present invention includes: stirring and aging a polymerization solution including a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent; and filtering the polymerization solution after completing the aging.

公开(公告)号：US20210383942A1

公开(公告)日：2021-12-09

申请号：US17337123

申请日：2021-06-02

Applicant: Eikem Silicones USA Corp.

Inventor： Yan MENG ,  Amanda Burton ,  Danaya Pratchayanan

IPC: H01B1/04 ,  C08L83/04 ,  C08K3/04 ,  B01J31/12 ,  B33Y70/00

Abstract: Electrically conductive or semi-conductive curable silicone compositions with stable long term electrical resistivity/resistance are provided comprising a mixture of furnace black and acetylene black as conductive fillers. Methods for preparing the electrically conductive or semi-conductive curable silicone compositions and uses of the electrically conductive or semi-conductive curable silicone compositions are also provided.

公开(公告)号：US11180437B2

公开(公告)日：2021-11-23

申请号：US17203097

申请日：2021-03-16

Applicant: SOOCHOW UNIVERSITY

Inventor： Shilei Zhang ,  Yujian Mao

IPC: C07C45/41 ,  B01J23/00 ,  B01J31/00 ,  B01J23/44 ,  B01J31/12 ,  C07C49/553

Abstract: Disclosed is a method for preparing a 1,3-dicarbonyl compound based on a metal hydride/palladium compound system. The method includes the following steps: suspending a palladium compound and a metal hydride in a solvent under the protection of nitrogen, then adding an electron-deficient olefin compound, reacting same at 0° C.-100° C. for 0.3 to 10 hours, then adding a saturated ammonium chloride aqueous solution to stop the reaction, and then subjecting same to extraction, evaporation until dryness, and column chromatography purification to obtain the 1,3-dicarbonyl compound. The hydride and palladium compound catalysts used by the present invention are reagents easily obtained in a laboratory. Compared to a common hydrogen hydrogenation method, the method is easier to operate, and has a higher safety, mild conditions, and a high reaction yield.

公开(公告)号：US20210355068A1

公开(公告)日：2021-11-18

申请号：US17443772

申请日：2021-07-27

Applicant: LG CHEM, LTD.

Inventor： Hyun Kyu Kim ,  Sung Kyu Lee ,  Jeong Ju Moon ,  Hyoung Jun ,  Chan Hyu Jin

IPC: C07C67/08 ,  B01J19/00 ,  B01J4/00 ,  B01J31/12 ,  C07C67/48 ,  B01D3/14 ,  B01J19/24

Abstract: The present disclosure relates to a method and a system for manufacturing an ester-based composition which are characterized in sequentially operating a plurality of batch reactors, and since an ester-based composition is semi-continuously manufactured, the productivity is high and the stability of a batch reactor is secured.