Process for making esters
    12.
    发明专利

    公开(公告)号:GB2529007A8

    公开(公告)日:2016-03-09

    申请号:GB201503203

    申请日:2015-02-26

    Abstract: A process for preparing an alkyl alkanoate, comprising contacting a an alkene, carbon monoxide (CO), an alcohol, a catalyst and a co-catalyst comprising a Bronsted acid, under alkoxycarbonylation conditions to produce an alkyl alkanoate, wherein the catalyst comprises a metal-organophosphorous ligand complex comprising a ligand of the following formula: wherein X1 – X8 are independently, H, R, Ar, substituted Ar, OR, OAr, CO2R, SiR3, SO3R, SO3H, or fluoro; where R is alkyl or substituted alkyl; where Ar is aryl; where X4 and X5 optionally may be linked to form a cyclic structure; where Y1 – Y4 are independently Ar or substituted Ar; where the Y1 – Y4 groups that are bound to the same P atom may also be linked with a carbon to carbon bond, CH2, NH, NR, NAr, or O; and where n is 0 or 1.

    HYPERBRANCHED ETHYLENE-BASED OLIGOMERS

    公开(公告)号:CA2915067A1

    公开(公告)日:2014-12-31

    申请号:CA2915067

    申请日:2014-06-24

    Abstract: A process to prepare a relatively inexpensive utility fluid comprises contacting together ethylene and a coordination-insertion catalyst and, optionally, an alpha-olefin, in a continuously-fed backmixed reactor zone under conditions such that a mixture of a hyperbranched oligomer and a branched oligomer is formed. The hyperbranched oligomer has an average of at least 1.5 methine carbons per oligomer molecule, and at least 40 methine carbons per one-thousand total carbons, and at least 40 percent of the methine carbons is derived from the ethylene, and the average number of carbons per molecule is from 25 to 100, and at least 25 percent of the hyperbranched oligomer molecules has a vinyl group and can be separated from the branched oligomer, which has an average number of carbons per molecule of up to 20. The coordination-insertion catalyst is characterized as having an ethylene/octene reactivity ratio up to 20 and a kinetic chain length up to 20 monomer units.

    OLIGOMEROS HIPER-RAMIFICADOS A BASE DE ETILENO.

    公开(公告)号:MX374936B

    公开(公告)日:2025-03-06

    申请号:MX2015016913

    申请日:2015-12-09

    Abstract: Un procedimiento para preparar un fluido de servicio público relativamente barato, comprende poner en contacto etileno y un catalizador de coordinación-inserción y, opcionalmente, una alfa-olefina, en una zona de reactor continuamente alimentado de mezcla total bajo condiciones tales que se forma una mezcla de un oligómero hiperramificado y un oligómero ramificado. El oligómero hiperramificado tiene un promedio de al menos 1.5 carbonos de metino por molécula de oligómero, y por lo menos 40 carbonos de metino por mil carbonos totales, y al menos 40 por ciento de los carbonos de metino se derivan del etileno, y el número promedio de carbonos por molécula es de 25 a 100, y al menos 25 por ciento de las moléculas de oligómeros hiperramificados tiene un grupo vinilo y puede ser separado del oligómero ramificado, que tiene un número promedio de átomos de carbono por molécula de hasta 20. El catalizador de coordinación-inserción se caracteriza por tener una relación de reactividad de etileno/octeno de hasta 20 y una longitud de cadena cinética de hasta 20 unidades monoméricas.

    OLIGOMEROS HIPER-RAMIFICADOS A BASE DE ETILENO.

    公开(公告)号:MX2015016913A

    公开(公告)日:2016-04-04

    申请号:MX2015016913

    申请日:2014-06-24

    Abstract: Un procedimiento para preparar un fluido de servicio público relativamente barato, comprende poner en contacto etileno y un catalizador de coordinación-inserción y, opcionalmente, una alfa-olefina, en una zona de reactor continuamente alimentado de mezcla total bajo condiciones tales que se forma una mezcla de un oligómero hiperramificado y un oligómero ramificado. El oligómero hiperramificado tiene un promedio de al menos 1.5 carbonos de metino por molécula de oligómero, y por lo menos 40 carbonos de metino por mil carbonos totales, y al menos 40 por ciento de los carbonos de metino se derivan del etileno, y el número promedio de carbonos por molécula es de 25 a 100, y al menos 25 por ciento de las moléculas de oligómeros hiperramificados tiene un grupo vinilo y puede ser separado del oligómero ramificado, que tiene un número promedio de átomos de carbono por molécula de hasta 20. El catalizador de coordinación-inserción se caracteriza por tener una relación de reactividad de etileno/octeno de hasta 20 y una longitud de cadena cinética de hasta 20 unidades monoméricas.

    PROCESS OF POLYMERIZING TRI-FUNCTIONAL LONG-CHAIN BRANCHED OLEFIN

    公开(公告)号:SG11202109433WA

    公开(公告)日:2021-10-28

    申请号:SG11202109433W

    申请日:2020-03-27

    Abstract: Processes of synthesizing long-chain branched polymers. The processes include contacting together one or more C2-C14 alkene monomers, at least one diene, optionally a solvent, and a multi-chain catalyst optionally in the presence of hydrogen, wherein the multi-chain catalyst comprises a plurality of polymerization sites; producing at least two polymer chains of the C2-C14 alkene monomers, each polymer chain polymerizing at one of the polymerization sites; synthesizing the long-chain branched polymers by connecting the two polymer chains with the diene, the joining of the two polymer chains being performed in a concerted manner during the polymerization; and producing tri-functional long chain branches from the diene, wherein the tri-functional long chain branches occur at a frequency of at least 0.03 per 1000 carbon atoms. The diene has a structure according to formula (I):

    PROCESS OF POLYMERIZING TRI-FUNCTIONAL LONG-CHAIN BRANCHED OLEFIN

    公开(公告)号:SG11202109432QA

    公开(公告)日:2021-10-28

    申请号:SG11202109432Q

    申请日:2020-03-27

    Abstract: Processes of synthesizing long-chain branched polymers. The processes include contacting together one or more C2-C14 alkene monomers, at least one diene, optionally a solvent, and a multi-chain catalyst optionally in the presence of hydrogen, wherein the multi-chain catalyst comprises a plurality of polymerization sites; producing at least two polymer chains of the C2-C14 alkene monomers, each polymer chain polymerizing at one of the polymerization sites; synthesizing the long-chain branched polymers by connecting the two polymer chains with the diene, the joining of the two polymer chains being performed in a concerted manner during the polymerization; and producing tri-functional long chain branches and tetra-functional long chain branches from the diene, wherein the long-chain branched polymers have a ratio of tri-functional to tetra-functional long chain branches from 0.05:1 to 100:0; and adjusting the ratio of tri-functional and tetra-functional long chain branches. The diene has a structure according to formula (I):

    TETRA-FUNCTIONAL LONG-CHAIN BRANCHED ETHYLENE-BASED POLYMERS

    公开(公告)号:SG11202102950WA

    公开(公告)日:2021-04-29

    申请号:SG11202102950W

    申请日:2019-09-27

    Abstract: Ethylene-based polymers comprise reaction products of polymerizing ethylene monomer, at least one diene or polyene comonomer, and optionally at least one C3 to C14 comonomer under defined polymerization reaction conditions, the ethylene-based polymer having: an Mw/Mw0 greater than 1.20. The Mw0 is the initial weight-average molecular weight of a comparative ethylene-based polymer by gel permeation chromatography. The comparative ethylene-based polymer being a reaction product of polymerizing ethylene monomer and all C3 to C14 comonomers present in the ethylene-based polymer, if any, without the at least one polyene comonomer, under the defined polymerization reaction conditions; and a molecular weight tail quantified by an MWD area metric, ATAIL, and ATAIL is less than or equal to 0.04 as determined by gel permeation chromatography using a triple detector.

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