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    POLY(CYCLIC ACETAL)S, METHODS OF MAKING SAME, AND USES THEREOF
    2.
    发明公开
    POLY(CYCLIC ACETAL)S, METHODS OF MAKING SAME, AND USES THEREOF 审中-公开

    公开(公告)号：US20240117115A1

    公开(公告)日：2024-04-11

    申请号：US18262509

    申请日：2022-01-21

    Applicant: Cornell University

    Inventor： Geoffrey W. Coates ,  Brooks Abel ,  Rachel Snyder ,  Holley Grace Hester

    IPC: C08G65/16 ,  C07D317/12 ,  C08G65/26

    CPC classification number: C08G65/16 ,  C07D317/12 ,  C08G65/266 ,  C08G2650/22 ,  C08G2650/44

    Abstract: Poly(cyclic acetal)s, methods of making same, and uses of same. The poly(cyclic acetal)s may have a number average molecular weight (Mn) of 10 to 3000 kiloDaltons (kDa) and over 50% of the chain ends may exclude hydroxyl groups. The poly(cyclic acetal) may be a homopolymer or copolymer(s) of poly(1,3-dioxolane) (PDXL). The poly(cyclic acetal)s may have one or more or all of: a thermal stability (Td,5%) of 337° C. to 392° C.; a thermal stability of (Td.50%) of 377° C. to 462° C.; or an Arrhenius activation energy (Ea) of 85.0 kJ/mol with 2 mol % of strong acid (e.g., pKa less than or equal to 4). Methods of polymerizing poly(cyclic acetal)s may comprise reacting cyclic acetal monomers with either Lewis acid catalysts and haloalkyl ether initiators or organic cation salt catalyst(s) and proton traps. Methods of chemically recycling poly(cyclic acetal)s into cyclic acetals may react poly(cyclic acetal)s with strong acids.

    Dual catalyst system for high primary hydroxyl polyols
    5.
    发明授权
    Dual catalyst system for high primary hydroxyl polyols 有权

    公开(公告)号：US09896542B2

    公开(公告)日：2018-02-20

    申请号：US15504368

    申请日：2015-10-19

    Applicant: Dow Global Technologies LLC

    Inventor： Arjun Raghuraman ,  Matthias Schaefer ,  Jean-Paul Masy ,  David S. Laitar

    IPC: C08G65/26

    CPC classification number: C08G65/269 ,  B01J23/75 ,  B01J27/26 ,  C08G65/2654 ,  C08G65/266 ,  C08G65/2663 ,  C08G65/2696

    Abstract: A method of producing a high primary hydroxyl group content and a high number average molecular weight polyol includes preparing a mixture that includes a double metal cyanide catalyst and a low molecular weight polyether polyol having a number average molecular weight of less than 1,000 g/mol, the polyether polyol is derived from propylene oxide, ethylene oxide, or butylene oxide, setting the mixture to having a first temperature, adding at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the mixture at the first temperature, allowing the mixture to react to form a reacted mixture, adding a Lewis acid catalyst to the reacted mixture, setting the reaction mixture including the second catalyst to have a second temperature that is less than the first temperature, and adding additional at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the reacted mixture at the second temperature such that a resultant polyol having a primary hydroxyl group content of at least 60% and a number average molecular weight greater than 2,500 g/mol is formed.

    POLYCARBONATE POLYOL COMPOSITIONS AND METHODS
    6.
    发明申请
    POLYCARBONATE POLYOL COMPOSITIONS AND METHODS 有权
    聚碳酸酯多元醇组合物和方法

    公开(公告)号：US20170051106A1

    公开(公告)日：2017-02-23

    申请号：US15191901

    申请日：2016-06-24

    Applicant: Novomer, Inc.

    Inventor： Jay J. Farmer

    IPC: C08G64/34 ,  B01J31/22 ,  C08G18/44 ,  B01J31/02 ,  C08G64/02 ,  C08G65/26

    CPC classification number: C08G64/34 ,  B01J31/0201 ,  B01J31/0202 ,  B01J31/183 ,  B01J31/184 ,  B01J31/22 ,  B01J31/2217 ,  B01J31/2243 ,  B01J2231/14 ,  B01J2531/0238 ,  B01J2531/025 ,  B01J2531/0252 ,  B01J2531/845 ,  C08G18/44 ,  C08G64/0208 ,  C08G64/0216 ,  C08G65/2603 ,  C08G65/266 ,  Y02P20/52

    Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having one or more sites capable of initiating copolymerization of epoxides and CO2, wherein the chain transfer agent contains one or more masked hydroxyl groups. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups, a high percentage of carbonate linkages, and substantially all polycarbonate chains having hydroxyl end groups have no embedded chain transfer agent.

    Abstract translation: 一方面，本公开内容涵盖用于CO 2和环氧化物共聚的聚合体系，其包括1）包含具有永久性配体组的金属配位化合物和至少一种作为聚合引发剂的配体的催化剂，和2）链转移剂 具有能够引发环氧化物和CO 2共聚的一个或多个位点，其中链转移剂含有一个或多个掩蔽的羟基。 在第二方面，本发明包括使用本发明聚合体系合成聚碳酸酯多元醇的方法。 在第三方面，本公开内容包括聚碳酸酯多元醇组合物，其特征在于聚合物链具有高百分比的-OH端基，高百分比的碳酸酯键，并且基本上所有具有羟基端基的聚碳酸酯链都没有嵌入链转移剂 。

    METHOD FOR PREPARING POLYALKYLENECARBONATE
    7.
    发明申请
    METHOD FOR PREPARING POLYALKYLENECARBONATE 有权
    制备聚碳酸酯的方法

    公开(公告)号：US20150274882A1

    公开(公告)日：2015-10-01

    申请号：US14436010

    申请日：2014-05-27

    Applicant: LG CHEM, LTD.

    Inventor： Jung Yoon Kim ,  Seung Young Park ,  Taek-Jun Jung ,  Yun-ki Cho

    IPC: C08G59/68

    CPC classification number: C08G59/685 ,  B01J31/12 ,  C08G64/02 ,  C08G64/34 ,  C08G65/2603 ,  C08G65/266 ,  C08G65/269 ,  C08L69/00

    Abstract: This disclosure relates to a method for preparing polyalkylenecarbonate. More specifically, in the method for preparing polyalkylenecarbonate, by using a solution polymerization with a specific heterogeneous catalyst and a solvent in the polymerization process of an epoxide compound and carbon dioxide, the products of side-reaction are reduced, removal of metal residues and by-products from the products is facilitated, danger due to overheating of the reactants is minimized, and heat removal and process stability are improved, and thus, high molecular weight copolymer may be easily provided, and mass production and scale-up are easy.

    Abstract translation: 本公开涉及一种制备聚亚烷基碳酸酯的方法。 更具体地说，在制备聚亚烷基碳酸酯的方法中，通过在环氧化合物和二氧化碳的聚合过程中通过使用特异性非均相催化剂和溶剂的溶液聚合，副反应产物减少，金属残余物的除去和 - 来自产品的产品被促进，由于反应物的过热的危险被最小化，并且提高了除热和加工稳定性，因此可以容易地提供高分子量共聚物，并且容易进行批量生产和放大。

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