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    MULTI-AZIRIDINE COMPOUND
    1.
    发明申请
    MULTI-AZIRIDINE COMPOUND 有权

    公开(公告)号：US20230136495A1

    公开(公告)日：2023-05-04

    申请号：US17794525

    申请日：2021-01-21

    申请人： COVESTRO (NETHERLANDS) B.V.

    发明人： Patrick Johannes Maria STALS ,  Daan VAN DER ZWAAG ,  Alfred Jean Paul BÜCKMANN ,  Gerardus Cornelis OVERBEEK ,  Jan VAN RIEL

    IPC分类号： C07D203/10 ,  C07D487/14 ,  C07D413/14 ,  C09D175/08 ,  C08G18/08 ,  C08G18/12 ,  C08G18/42

    摘要： The present invention relates to a multi-aziridine compound having: ⋅a) from 2 to 6 of the following structural units (A): whereby R1 is H, R2 and R4 are independently chosen from H or an aliphatic hydrocarbon group containing from 1-4 carbon atoms, R3 is an aliphatic hydrocarbon group containing from 1-4 carbon atoms, R′═H or an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms; R″ and R′″ are independently chosen from an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, a cycloaliphatic hydrocarbon group containing from 4 to 12 carbon atoms or an aromatic hydrocarbon group containing from 6 to 12 carbon atoms, b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and c) a molecular weight in the range from 600 Daltons to 5000 Daltons.

    METHODS OF SYNTHESIZING MULTI-HYDROGEN BONDING OLIGOMERS
    4.
    发明申请
    METHODS OF SYNTHESIZING MULTI-HYDROGEN BONDING OLIGOMERS 有权

    公开(公告)号：US20230117457A1

    公开(公告)日：2023-04-20

    申请号：US17913704

    申请日：2021-03-31

    申请人： Covestro (Netherlands) B.V.

    发明人： Meng He ,  Sam Hsieh ,  Jim Lin ,  Wenders WEN

    IPC分类号： C08G18/12 ,  C08G18/38 ,  C08G18/61 ,  C08G18/73

    摘要： Disclosed herein are methods for synthesizing oligomer mixtures with one or more moieties capable of forming a multi-hydrogen bonding dimer. The method comprises the steps of providing certain intermediate reaction products; adding a polyol component to the intermediate reaction product to yield an oligomer mixture comprising one or more multi-hydrogen bonding groups; and further reacting the mixture with certain isocyanate-reactive compounds to yield a multi-hydrogen bonding oligomer, wherein solvents comprise less than 50% of the total by weight of all reagents used in the synthesis of the multi-hydrogen bonding oligomer. Preferably, such methods involve no separation, distillation, or isolation of any intermediate product, and as such, they are particularly useful for a continuous or one-pot synthesis.

    Curable Photochromic Polycarbodiimide Compositions
    10.
    发明申请
    Curable Photochromic Polycarbodiimide Compositions 有权

    公开(公告)号：US20230054095A1

    公开(公告)日：2023-02-23

    申请号：US17788912

    申请日：2019-12-27

    申请人： Transitions Optical, Ltd.

    发明人： Ramaiahgari REDDY ,  Brad S. VELDKAMP ,  Anil KUMAR

    IPC分类号： C08G18/02 ,  C08G18/12 ,  C08G18/79 ,  C09J175/12

    摘要： The present invention relates to curable photochromic compositions which include a polycarbodiimide, an at least di-functional first carboxylic acid functional material having at least two carboxylic acid groups, an optional second carboxylic acid functional material having at least three carboxylic acid groups, a photochromic compound, and an aprotic organic solvent. The curable photochromic compositions have an equivalents ratio of carbodiimide equivalents of the polycarbodiimide to a total carboxylic acid equivalents of the first and optional second carboxylic acid functional materials of from 0.5:1 to 10:1 when the second carboxylic acid functional material is not present; and from 0.5:1 to 3:1 when the second carboxylic acid functional material is present. The present invention, more particularly, relates to curable photochromic coating compositions, and curable photochromic adhesive compositions.