公开(公告)号：US20220267658A1

公开(公告)日：2022-08-25

申请号：US17596598

申请日：2020-06-25

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Anatoly I. Kramer ,  Jorg F.W. Weber ,  Jennifer L. Rapp ,  Kyle G. Lewis ,  Patrick C. Chen ,  Behrouz Engheta ,  Heinrich R. Braun ,  Babak Lotfizadehdehkordi ,  Tobias Klande

IPC: C09K5/10 ,  C10M169/04

Abstract: Methyl paraffins formed by hydrogenating one or more LAO dimers comprising a vinylidene moiety or a trisubstituted olefin moiety may have advantageous heat transfer properties, particularly when incorporated within an electric vehicle. For example, methyl paraffins produced upon hydrogenating LAO dimers formed from one or more C6-C12 LAOS, particularly in the presence of a Hf metallocene catalyst system, may contain 12-24 carbon atoms, and collectively have a flash point of about 130° C. or above, a pour point of about −42° C. or lower, a thermal conductivity at 80° C. of about 0.165 W/m·K or higher, and a Mouromtseff number ranging from about 17,000 to about 27,000 kg/(s2.2·m0.6·K) at 80° C. Heat transfer fluids comprising such methyl paraffins may be placed in contact with a heat-generating component, such as a battery and/or motor of an electric vehicle, or within a similar type of battery system, including immersive configurations for a battery.

公开(公告)号：US20240287225A1

公开(公告)日：2024-08-29

申请号：US18647691

申请日：2024-04-26

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Patrick C. Chen ,  Mark H. Li ,  Jennifer L. Rapp ,  Pramod J. Nandapurkar ,  Brian H. Wahn ,  Babak Lotfizadehdehkordi ,  Craig J. Emett ,  Najeeb M. Kuzhiyil ,  Jian Yang

IPC: C08F210/16 ,  C07C2/30 ,  C07C2/32 ,  C08F4/659 ,  C08F4/6592

CPC classification number: C08F210/16 ,  C07C2/30 ,  C07C2/32 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65922

Abstract: In at least one embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin to a first catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The first alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more. The process includes introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition including an acid catalyst in a second reactor to form a second reactor effluent comprising PAO trimer.