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    THERMAL INTERFACE MATERIALS
    32.
    发明申请
    THERMAL INTERFACE MATERIALS 有权

    公开(公告)号：US20240400877A1

    公开(公告)日：2024-12-05

    申请号：US18262771

    申请日：2022-05-04

    Applicant: Dow Global Technologies LLC ,  Dow Silicones Corporation

    Inventor： Praveen Agarwal ,  William J. Harris ,  Chi-Hao Chang

    IPC: C09K5/14 ,  C08G18/12 ,  C08G18/20 ,  C08G18/22 ,  C08G18/50 ,  C08K9/06 ,  C09D7/45 ,  C09D7/62 ,  C09D7/65 ,  C09D175/12 ,  H01M10/653 ,  H01M10/6551

    Abstract: Thermally conductive compositions include a blocked isocyanate prepolymer composition containing an isocyanate prepolymer blocked with one or more of alkylphenol or alkenylphenol; and an amine composition containing: one or more polyetheramines, and one or more catalysts selected from a group consisting of carboxy late salts, tertiary amines, amidines, guanidines, and diazabicyclo compounds; and a thermally conductive filler present at a percent by weight of the thermally conductive composition (wt %) in a range of 60 wt % to 98 wt %; wherein the thermally conductive composition cures at a temperature in the range of 18° C. to 35° C. when the blocked isocyanate prepolymer composition and the amine composition are mixed. Methods include preparing a thermally conductive gap filler prepared by combining a blocked isocyanate prepolymer composition and an amine composition, and curing the resulting thermally conductive composition, such as at room temperature.

    SYSTEMS AND METHODS FOR PRODUCING OLEFINS
    33.
    发明申请
    SYSTEMS AND METHODS FOR PRODUCING OLEFINS 有权

    公开(公告)号：US20240399328A1

    公开(公告)日：2024-12-05

    申请号：US18697853

    申请日：2022-10-04

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Fermin Alejandro Sandoval ,  Mohan V. Punganur ,  Adam M. McNeeley ,  Jacobus Kloos ,  Anil V. Sakhare

    IPC: B01J8/38 ,  B01J8/26

    Abstract: Methods for producing olefins may include contacting a hydrocarbon feed stream with a particulate solid, the contacting of the hydrocarbon feed stream with the particulate solid reacting the hydrocarbon feed stream to form a product stream. The method may include separating the particulate solid from the product stream and passing at least a portion of the product stream and the hydrocarbon feed stream through a feed stream preheater. The feed stream preheater may include a shell and tube heat exchanger comprising a shell, a plurality of tubes extending axially through the shell, a shell side inlet, a shell side outlet, a tube side inlet, a tube side outlet, an inlet tube sheet, and an outlet tube sheet. The outlet tube sheet may be connected to the shell by an expansion joint.

    POLYMER BLENDS COMPRISING POST-CONSUMER RECYCLED RESIN
    39.
    发明申请
    POLYMER BLENDS COMPRISING POST-CONSUMER RECYCLED RESIN 有权

    公开(公告)号：US20240376297A1

    公开(公告)日：2024-11-14

    申请号：US18691681

    申请日：2022-10-11

    Applicant: Dow Global Technologies LLC

    Inventor： Akanksha Garg ,  Yongchao Zeng ,  Andrew T. Heitsch ,  Christopher M. Thurber ,  Carmelo Declet Perez ,  Jacquelyn A. DeGroot ,  Jin Wang ,  Mridula Kapur ,  Amit K. Chaudhary

    IPC: C08L23/06 ,  C08J5/18 ,  C08L23/08

    Abstract: Embodiments of the present disclosure are directed to post-consumer recycled (PCR) resin formulations comprising: PCR resin comprising a blend of polyethylene recovered from post-consumer material, pre-consumer material, or combinations thereof; and virgin polyethylene resin formulation, wherein the virgin polyethylene resin formulation comprises: a density from 0.910 to 0.950 g/cc, an improved comonomer content distribution (iCCD) wt. fraction greater than 30 wt. % at a temperature range of 35 to 90° C., and an iCCD wt. fraction greater than 8 wt. % at a temperature range of 99 to 115° C. The PCR resin formulation comprises an overall density of from 0.910 to 0.930 g/cc; an iCCD second elution peak occurring at a temperature greater than 99° C.; an iCCD wt. fraction greater than 6 wt. % at a temperature range of 99 to 115° C.; and an iCCD wt. fraction greater than 60 wt. % at a temperature range of 35 to 90° C.

    SIMPLIFIED ETHYLENE OXIDE PURIFICATION METHODS
    40.
    发明申请
    SIMPLIFIED ETHYLENE OXIDE PURIFICATION METHODS 有权

    公开(公告)号：US20240376063A1

    公开(公告)日：2024-11-14

    申请号：US18692105

    申请日：2022-11-15

    Applicant: Dow Global Technologies LLC

    Inventor： Elias M. Hindy

    IPC: C07D303/04 ,  B01D3/00 ,  B01D3/14 ,  B01D3/32 ,  B01D53/14 ,  C07C45/78 ,  C07D301/32

    Abstract: The present invention provides simplified, efficient methods for refining a crude ethylene oxide (EO) containing mixture of water, EO, aldehydes and various gases comprising distilling the mixture in a dividing wall column having a receiving side and a product side and drawing each of a purified ethylene oxide stream and an isolated acetaldehyde stream from the product side of the dividing wall column, while minimizing the time during which a mixture containing more than 1 wt. % of each of ethylene oxide and water are in contact at a temperature above 80° C. to 2 minutes or less. No side draw is removed from the dividing wall column on its receiving side. The purification of the crude ethylene oxide needs no stripper or second absorber. The overhead and bottoms from the dividing wall column are recycled into the column or are reused in ethylene oxide production. The resulting purified EO stream may be more than 99.9% pure.

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