知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

10 records (took 0.024 seconds)

    Lead-free gasoline blend
    3.
    发明授权
    Lead-free gasoline blend 有权

    公开(公告)号：US11591532B2

    公开(公告)日：2023-02-28

    申请号：US17600447

    申请日：2020-03-27

    Applicant: SABIC Global Technologies B.V.

    Inventor： Guillermo Leal ,  Vinodkumar Vasudevan ,  Somak Paul ,  Kamalakar Gunda

    IPC: C10L1/02 ,  C10L1/10 ,  C10L1/182 ,  C10L10/10

    Abstract: An unleaded gasoline composition comprises, based on the total volume of the unleaded gasoline composition, 50 to 96 vol. % of an unleaded gasoline; 2 to 20 vol. % of a mixed butanol; and 2 to 30 vol. % of a distillate oil fraction comprising a paraffin, an olefin, a naphthene, and an aromatic at an initial boiling point cut of 180° C., wherein the unleaded gasoline, the mixed butanol, and the distillate oil fraction are selected to provide the unleaded gasoline composition with a Research Octane Number of 90 to 101, determined in accordance with ASTM D 2699; and a Motor Octane Number of 81.4 to 90, determined in accordance with ASTM D 2700.

    Method of producing terephthalic acid
    4.
    发明授权
    Method of producing terephthalic acid 有权

    公开(公告)号：US10315978B2

    公开(公告)日：2019-06-11

    申请号：US15775874

    申请日：2016-11-14

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Nedumbamana Sankaran ,  Syed Azhar Hashmi ,  Vinodkumar Vasudevan

    IPC: C07C51/487 ,  C07C1/12

    Abstract: A method of reducing the formation of an impurity in a terephthalic acid (TPA) production process includes: combining in a reactor, a catalyst, a mixture comprising the impurity and the TPA, and a compound comprising an active carbon atom; reacting the impurity with the compound in the presence of the catalyst by a condensation-dehydration reaction process comprising a nucleophilic addition of the active carbon atom of the compound to a carbonyl group of the impurity to form an intermediate followed by a dehydration reaction of the intermediate to form a product mixture comprising a water, the TPA, and an alkene; and recovering the product mixture from the reactor.

    METHOD FOR PURIFICATION OF A AROMATIC DIACID OR THE CORRESPONDING ANHYDRIDES
    5.
    发明申请
    METHOD FOR PURIFICATION OF A AROMATIC DIACID OR THE CORRESPONDING ANHYDRIDES 审中-公开

    公开(公告)号：US20180118653A1

    公开(公告)日：2018-05-03

    申请号：US15562234

    申请日：2016-03-18

    Applicant: SABIC Global Technologies B.V.

    Inventor： Vinodkumar Vasudevan ,  Guillermo Leal ,  Nedumbamana Sankaran ,  Syed Azhar Hashmi

    IPC: C07C51/487 ,  C07C51/43 ,  C07C51/265

    CPC classification number: C07C51/487 ,  C07C51/265 ,  C07C51/43 ,  C07C63/26

    Abstract: A method of removing an aromatic carboxy-aldehyde from an aromatic acid or the corresponding anhydride includes reacting a hydroxylamine-containing compound with the aromatic carboxy-aldehyde to form a reaction mixture including the corresponding nitrone. A phthalic acid or corresponding anhydride prepared according to the method is also described herein. A method for the manufacture of a phenyl dicarboxylic acid includes oxidizing a xylene to provide a stream including the phenyl dicarboxylic acid and the corresponding carboxybenzaldehyde and toluic acid contaminants, reacting a hydroxylamine-containing compound with the carboxybenzaldehyde in the stream to form a reaction mixture including the corresponding nitrone, wherein the nitrone is water soluble, and crystallizing the phenyl dicarboxylic acid or the corresponding anhydride from water to provide the purified phenyl dicarboxylic acid or the corresponding anhydride. A phenyl dicarboxylic acid prepared according to the above method represents another embodiment.

    LEAD-FREE GASOLINE BLEND
    6.
    发明申请
    LEAD-FREE GASOLINE BLEND 有权

    公开(公告)号：US20220162511A1

    公开(公告)日：2022-05-26

    申请号：US17600447

    申请日：2020-03-27

    Applicant: SABIC Global Technologies B.V.

    Inventor： Guillermo Leal ,  Vinodkumar Vasudevan ,  Somak Paul ,  Kamalakar Gunda

    IPC: C10L1/02 ,  C10L1/10 ,  C10L1/182 ,  C10L10/10

    Abstract: An unleaded gasoline composition comprises, based on the total volume of the unleaded gasoline composition, 50 to 96 vol. % of an unleaded gasoline; 2 to 20 vol. % of a mixed butanol; and 2 to 30 vol. % of a distillate oil fraction comprising a paraffin, an olefin, a naphthene, and an aromatic at an initial boiling point cut of 180° C., wherein the unleaded gasoline, the mixed butanol, and the distillate oil fraction are selected to provide the unleaded gasoline composition with a Research Octane Number of 90 to 101, determined in accordance with ASTM D 2699; and a Motor Octane Number of 81.4 to 90, determined in accordance with ASTM D 2700.

    A METHOD OF PRODUCING TEREPHTHALIC ACID
    8.
    发明申请
    A METHOD OF PRODUCING TEREPHTHALIC ACID 审中-公开

    公开(公告)号：US20180319732A1

    公开(公告)日：2018-11-08

    申请号：US15775874

    申请日：2016-11-14

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Nedumbamana Sankaran ,  Syed Azhar Hashmi ,  Vinodkumar Vasudevan

    IPC: C07C51/487

    CPC classification number: C07C51/487 ,  C07C1/12 ,  C07C11/02

    Abstract: A method of reducing the formation of an impurity in a terephthalic acid (TPA) production process includes: combining in a reactor, a catalyst, a mixture comprising the impurity and the TPA, and a compound comprising an active carbon atom; reacting the impurity with the compound in the presence of the catalyst by a condensation-dehydration reaction process comprising a nucleophilic addition of the active carbon atom of the compound to a carbonyl group of the impurity to form an intermediate followed by a dehydration reaction of the intermediate to form a product mixture comprising a water, the TPA, and an alkene; and recovering the product mixture from the reactor.

Patent Agency Ranking