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    FLEXIBLE FOAM
    3.
    发明申请
    FLEXIBLE FOAM 审中-公开

    公开(公告)号：WO2021130104A1

    公开(公告)日：2021-07-01

    申请号：PCT/EP2020/086797

    申请日：2020-12-17

    Applicant: COVESTRO DEUTSCHLAND AG

    Inventor： DENG, Yan ,  WU, Weicheng ,  TANG, Min

    IPC: C08G18/32 ,  C08G18/48 ,  C08G18/66 ,  C08G18/72 ,  C08G18/75 ,  C08G18/79 ,  C08G18/3275 ,  C08G18/3281 ,  C08G18/4816 ,  C08G18/4841 ,  C08G18/6688 ,  C08G18/725 ,  C08G18/755 ,  C08G18/792

    Abstract: The invention relates to a composition for preparing a flexible foam and its application. The composition comprises the following components: a. an isocyanate mixture; b. a polymer polyol mixture; c. an isocyanate-reactive group-containing compound having a number average molecular weight of 32-400 g/mol; d. an aqueous alkali metal salt and/ or ammonium bicarbonate solution, having a concentration of greater than or equal to 1.5 wt% and less than 30 wt%, and a pH value of less than 9.5; and e. a metal catalyst; wherein the amount of the tertiary amine catalyst in the composition is not more than 0.1wt%, and the isocyanate index of the composition is 70-120. The composition has a high reaction efficiency and can meet the quantitative production requirements of the textile industry. The flexible foam prepared from the composition has a good phenolic yellowing resistance, and can meet the comprehensive requirements of the textile industry for a high rebound resilience, a good gas permeability, a ultraviolet yellowing resistance and the like of the foam.

    POLYASPARTIC ACID ESTER-CONTAINING COMPOSITION
    4.
    发明申请
    POLYASPARTIC ACID ESTER-CONTAINING COMPOSITION 审中-公开

    公开(公告)号：WO2022136155A1

    公开(公告)日：2022-06-30

    申请号：PCT/EP2021/086427

    申请日：2021-12-17

    Applicant: COVESTRO DEUTSCHLAND AG

    Inventor： XU, Fei ,  ZHU, Deyong ,  LI, Jinqi ,  DENG, Yan

    IPC: C08G18/38 ,  C08G18/72 ,  C08G18/79 ,  C09D175/12

    Abstract: The invention relates to a polyaspartic acid ester-containing composition, a two-component coating composition containing said composition, a coating method and use of the coating composition, and a product obtained by applying the coating composition. The polyaspartic acid ester-containing composition comprises a. a Polyaspartic acid ester; b. a thiol with an active hydrogen group; and c. optionally an antioxidant in an amount of not more than 3% by weight, relative to the total weight of the composition; wherein the molar ratio of mercapto groups of the thiol of component b) to amino groups of the polyaspartic acid ester of component a) is of 0.060-0.720. The composition of the present invention has high color stability and is not prone to yellowing.

    Solar module with reduced PID effect
    7.
    发明申请
    Solar module with reduced PID effect 审中-公开

    公开(公告)号：WO2019222949A1

    公开(公告)日：2019-11-28

    申请号：PCT/CN2018/088117

    申请日：2018-05-24

    Applicant: COVESTRO DEUTSCHLAND AG ,  CHEN, Ruqi

    Inventor： CHEN, Ruqi ,  HOCKE, Heiko ,  ZHAO, Dongbo ,  DENG, Yan ,  TANG, Min

    IPC: H01L31/042 ,  H02S20/00

    Abstract: The present invention concerns a solar module A comprising at least a stack B made of pane (s) of glass, a polymeric encapsulation material, crystalline silicon cell (s) and optionally a back sheet, a frame C made of polymeric composite materials based on aliphatic polyisocyanates and optionally a sealant D. It is characterized by an excellent long term weathering resistance, high durability, low maintenance efforts and low perceptibility to PID.

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