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    USE OF ADDITIVES TO FINE-TUNE THE COMPOSITION OF CARBONATE UNITS IN THE POLYMER FORMED BY COPOLYMERIZATION OF CO2 WITH EPOXIDE: APPLICATION TO THE SYNTHESIS OF POLYCARBONATE-BASED BLOCK COPOLYMERS AND OF TELECHELICS
    2.
    发明申请
    USE OF ADDITIVES TO FINE-TUNE THE COMPOSITION OF CARBONATE UNITS IN THE POLYMER FORMED BY COPOLYMERIZATION OF CO2 WITH EPOXIDE: APPLICATION TO THE SYNTHESIS OF POLYCARBONATE-BASED BLOCK COPOLYMERS AND OF TELECHELICS 审中-公开
    添加剂的使用以微调CO 2与环氧化物共聚形成的聚合物中碳酸酯单体的组成：应用于合成基于聚碳酸酯的嵌段共聚物和电话

    公开(公告)号：WO2016203408A1

    公开(公告)日：2016-12-22

    申请号：PCT/IB2016/053552

    申请日：2016-06-15

    Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： FENG, Xiaoshuang ,  ZHANG, Dongyue ,  GNANOU, Yves ,  HADJICHRISTIDIS, Nikolaos

    IPC: C08G64/34

    CPC classification number: C08G64/34 ,  C08G64/32 ,  C08G81/00 ,  C08K5/057 ,  C08K5/19 ,  C08K5/53 ,  C08K5/5399

    Abstract: Embodiments of the present disclosure describe a method of making a polycarbonate, comprising contacting one or more cyclic monomers and carbon dioxide in the presence of one or more of a Lewis acid catalyst, an initiator, and an ionic liquid; and agitating, sufficient to copolymerize the one or more cyclic monomers and carbon dioxide to create a polycarbonate. Embodiments of the present disclosure further describe a method of controlling a polymer composition, comprising contacting one or more cyclic monomers and carbon dioxide; adjusting an amount of one or more of a Lewis acid catalyst, an ionic liquid, and an initiator in the presence of the one or more cyclic monomers and carbon dioxide, sufficient to selectively modify a resulting polycarbonate; and agitating, sufficient to copolymerize the one or more cyclic monomers and carbon dioxide to create the polycarbonate.

    Abstract translation: 本公开的实施方案描述了制备聚碳酸酯的方法，包括在路易斯酸催化剂，引发剂和离子液体中的一种或多种的存在下使一种或多种环状单体和二氧化碳接触; 并搅拌，足以共聚一种或多种环状单体和二氧化碳以产生聚碳酸酯。 本公开的实施方案进一步描述了控制聚合物组合物的方法，包括使一种或多种环状单体和二氧化碳接触; 在一种或多种环状单体和二氧化碳的存在下调节一种或多种路易斯酸催化剂，离子液体和引发剂的量，足以选择性地改性所得聚碳酸酯; 并搅拌，足以共聚一种或多种环状单体和二氧化碳以产生聚碳酸酯。

    POLYCARBONATE POLYOLS
    5.
    发明申请
    POLYCARBONATE POLYOLS 审中-公开

    公开(公告)号：WO2020121262A3

    公开(公告)日：2020-06-18

    申请号：PCT/IB2019/060737

    申请日：2019-12-12

    Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： FENG, Xiaoshuang ,  PATIL, Naganath ,  BOOPATHI, Senthil ,  GNANOU, Yves ,  HADJICHRISTIDIS, Nikos

    IPC: C08G64/34 ,  C08G65/26

    Abstract: Embodiments of the present disclosure describe polymerization systems for the synthesis of polycarbonate polyols, methods of synthesizing polycarbonate polyols using the polymerization systems, methods of recovering initiators and/or activators for use or re-use in the synthesis of polycarbonate polyol, and the like. The polymerization systems can comprise an initiator including a mono- or multi-functional carboxylate or carbonate salt having an organic cation as a counter-ion; an optional co-initiator including a mono- or multi- functional protic compound selected from acids, alcohols, water, and combinations thereof; and an activator including a borane compound selected from alkyl boranes and aryl boranes; wherein the activator and one or more of the initiator and co-initiator associate to form an ate complex.

    RECOVERY AND REUSE OF ACTIVATORS AND INITIATORS FOLLOWING POLYCARBONATE SYNTHESIS
    6.
    发明申请
    RECOVERY AND REUSE OF ACTIVATORS AND INITIATORS FOLLOWING POLYCARBONATE SYNTHESIS 审中-公开

    公开(公告)号：WO2021005470A1

    公开(公告)日：2021-01-14

    申请号：PCT/IB2020/056267

    申请日：2020-07-02

    Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： FENG, Xiaoshuang ,  BOOPATHI, Senthil ,  GNANOU, Yves

    IPC: C08G64/40

    Abstract: Methods of recovering and/or reusing activators and/or initiators following polycarbonate synthesis may include: contacting an amine compound with a carboxylic acid compound to form a first ammonium salt including a first ammonium cation associated with a carboxylate group; mixing the first ammonium salt with a reaction solution to obtain a first solution comprising a protonated polycarbonate, an activator adduct, and a second ammonium salt in which the second ammonium cation is associated with the carboxylate group from the first ammonium salt; contacting the first solution to precipitate the polycarbonate out of solution; separating the activator adduct from the precipitated polycarbonate and the second ammonium salt to obtain a second solution; separating the precipitated polycarbonate from the second ammonium salt to recover the second ammonium salt; and separating the activator adduct from the second solution to recover an activator capable of being reused for synthesizing additional polycarbonates.

    POLYCARBONATE POLYOLS
    7.
    发明申请
    POLYCARBONATE POLYOLS 审中-公开

    公开(公告)号：WO2020121262A2

    公开(公告)日：2020-06-18

    申请号：PCT/IB2019/060737

    申请日：2019-12-12

    Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： FENG, Xiaoshuang ,  PATIL, Naganath ,  BOOPATHI, Senthil ,  GNANOU, Yves ,  HADJICHRISTIDIS, Nikos

    IPC: C08G64/34 ,  C08G65/26

    Abstract: Embodiments of the present disclosure describe polymerization systems for the synthesis of polycarbonate polyols, methods of synthesizing polycarbonate polyols using the polymerization systems, methods of recovering initiators and/or activators for use or re-use in the synthesis of polycarbonate polyol, and the like. The polymerization systems can comprise an initiator including a mono- or multi-functional carboxylate or carbonate salt having an organic cation as a counter-ion; an optional co-initiator including a mono- or multi- functional protic compound selected from acids, alcohols, water, and combinations thereof; and an activator including a borane compound selected from alkyl boranes and aryl boranes; wherein the activator and one or more of the initiator and co-initiator associate to form an ate complex.

    POLYCARBAMATE SYNTHESIS VIA CHAIN-GROWTH COPOLYMERIZATION
    9.
    发明申请
    POLYCARBAMATE SYNTHESIS VIA CHAIN-GROWTH COPOLYMERIZATION 审中-公开

    公开(公告)号：WO2021224866A1

    公开(公告)日：2021-11-11

    申请号：PCT/IB2021/053865

    申请日：2021-05-06

    Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： FENG, Xiaoshuang ,  JIA, Mingchen ,  GNANOU, Yves

    IPC: C08G18/00 ,  C08K5/56 ,  C08K5/55 ,  C08K5/19

    Abstract: The present disclosure features materials and methods for synthesizing polycarbamates via chain-growth copolymerization in the presence of a Lewis acid of a first reactant having a oxirane or thiirane moiety and at least one heteroallene reactant, wherein a first heteroallene reactant is an isocyanate or an isothiocyanate. Also featured are polycarbamate copolymers and terpolymers according to formula (I): (I), wherein An is a halogen atom or a carboxylate or alkoxide moiety; each X and X' is independently an oxygen or a sulfur atom; each R1 and R2 is independently a hydrogen atom or an alkyl group including linear, branched, saturated, unsaturated, aromatic, cyclic alkyl groups, and heteroatom-containing alkyl groups, R3 is an electron deficient group, m and o are independently selected from integers ≥ 1 and n is 0 or an integer ≥ 1. Both X and X' can be the same or X and X' can be different.

    DEGRADABLE POLYETHERS
    10.
    发明申请
    DEGRADABLE POLYETHERS 审中-公开

    公开(公告)号：WO2020058852A1

    公开(公告)日：2020-03-26

    申请号：PCT/IB2019/057827

    申请日：2019-09-17

    Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： FENG, Xiaoshuang ,  VARGHESE, Jobi ,  GNANOU, Yves ,  HADJICHRISTIDIS, Nikos ,  JIA, Mingchen ,  AUGUSTINE, Dhanya

    IPC: C08G63/664 ,  C08G64/34 ,  C08G65/26 ,  C08G83/00

    Abstract: Embodiments include degradable polyethers comprising ester units from a cyclic ester or carbonate units from carbon dioxide incorporated into a poly(ethylene oxide) backbone or a multifunctional core of a degradable polyether star. Embodiments include methods of forming a degradable polyether comprising contacting an ethylene oxide monomer with a lactide monomer or carbon dioxide in the presence of an alkyl borane and an initiator. Embodiments include methods of forming degradable polyether stars comprising contacting a diepoxide monomer with carbon dioxide and/or a cyclic ester in the presence of an initiator and a first amount of an alkyl borane to form a multifunctional core comprising degradable carbonate linkages and/or degradable ester linkages, and contacting the multifunctional core with an ethylene oxide monomer in the presence of a second amount of an alkyl borane to form arms of a polyether attached to the degradable multifunctional core.

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