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    Isocyanate-reactive formulation for rigid polyurethane foam
    1.
    发明授权
    Isocyanate-reactive formulation for rigid polyurethane foam 有权

    公开(公告)号：US10144797B2

    公开(公告)日：2018-12-04

    申请号：US15557518

    申请日：2016-03-02

    Applicant: Dow Global Technologies LLC

    Inventor： Davide Micheletti ,  Rossella Riccio ,  Jean-Paul Masy ,  Vanni Parenti

    IPC: C08G18/48 ,  C08G18/50 ,  C08G18/76 ,  C08G18/16 ,  C08G101/00

    Abstract: A storage stable isocyanate-reactive composition includes a reactive component including (a) 5 wt % to 30 wt % of at least one Novolac-type polyoxypropylene polyether polyol having a hydroxyl functionality from 2 to 5 and a hydroxyl number from 130 to 450 mg KOH/g, (b) 20 wt % to 60 wt % of at least one high functional polyether polyol having a hydroxyl functionality from 6 to 8 and a hydroxyl number from 300 to 700 mg KOH/g, (c) 2 wt % to 30 wt % of at least one low functional polyether polyol having a hydroxyl functionality from 2 to 5 and a hydroxyl number from 50 to 400 mg KOH/g, (d) 2 wt % to 30 wt % of at least one amine initiated polyol having a hydroxyl number from 250 to 600 mg KOH/g, and (e) 1 wt % to 25 wt % of one or more additives; and a hydrocarbon physical blowing agent component in an amount of at least 10 parts by weight for each 100 parts by weight of the reactive component.

    Polyisocyanate component, a polyurethane foaming system and an article made therefrom
    2.
    发明授权
    Polyisocyanate component, a polyurethane foaming system and an article made therefrom 有权

    公开(公告)号：US11472910B2

    公开(公告)日：2022-10-18

    申请号：US17044651

    申请日：2018-05-18

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： Yanli Feng ,  Weijun Zhou ,  Luigi Bertucelli ,  Rajat Duggal ,  Yibei Gu ,  Wei Liu ,  Davide Micheletti

    IPC: C08G18/42 ,  B32B5/20 ,  B32B15/04 ,  B32B15/095 ,  B32B15/20 ,  C08G18/64 ,  C08G18/76 ,  C08G18/80

    Abstract: A polyisocyanate component, a polyurethane foaming system, and an article made therefrom, wherein the polyisocyanate component includes (a) a preformed mixture including an aromatic oxazolidone compound that is the reaction product of at least one aromatic epoxide and at least one first polyisocyanate having an average isocyanate functionality of no more than 2.7 and greater than 1.8, in the presence of at least one catalyst, the aromatic oxazolidone compound includes at least one free isocyanate group and at least one aromatic oxazolidone group, the aromatic oxazolidone group includes an aromatic group and an oxazolidone group, and (b) at least one second polyisocyanate has an average isocyanate functionality equal to or greater than 2.7 and less than 6.0. The second polyisocyanate is added to the preformed mixture to form the polyisocyanate component. The polyisocyanate component has a viscosity of no more than 4.0 Pa-sat 25° C., an aromatic oxazolidone group content of 2 weight percent to 10 weight percent based on a total weight of the polyisocyanate component, and an average isocyanate functionality of from 1.8 to 6.0.

    A POLYISOCYANATE COMPONENT, A POLYURETHANE FOAMING SYSTEM AND AN ARTICLE MADE THEREFROM
    6.
    发明申请
    A POLYISOCYANATE COMPONENT, A POLYURETHANE FOAMING SYSTEM AND AN ARTICLE MADE THEREFROM 有权

    公开(公告)号：US20210061939A1

    公开(公告)日：2021-03-04

    申请号：US17044651

    申请日：2018-05-18

    Applicant: Dow Global Technologies LLC

    Inventor： Yanli Feng ,  Weijun Zhou ,  Luigi Bertucelli ,  Rajat Duggal ,  Yibei Gu ,  Wei Liu ,  Davide Micheletti

    IPC: C08G18/42 ,  C08G18/80 ,  C08G18/76 ,  C08G18/64 ,  B32B5/20 ,  B32B15/04 ,  B32B15/095 ,  B32B15/20

    Abstract: A polyisocyanate component, a polyurethane foaming system, and an article made therefrom, wherein the polyisocyanate component includes (a) a preformed mixture including an aromatic oxazolidone compound that is the reaction product of at least one aromatic epoxide and at least one first polyisocyanate having an average isocyanate functionality of no more than 2.7 and greater than 1.8, in the presence of at least one catalyst, the aromatic oxazolidone compound includes at least one free isocyanate group and at least one aromatic oxazolidone group, the aromatic oxazolidone group includes an aromatic group and an oxazolidone group, and (b) at least one second polyisocyanate has an average isocyanate functionality equal to or greater than 2.7 and less than 6.0. The second polyisocyanate is added to the preformed mixture to form the polyisocyanate component. The polyisocyanate component has a viscosity of no more than 4.0 Pa-sat 25° C., an aromatic oxazolidone group content of 2 weight percent to 10 weight percent based on a total weight of the polyisocyanate component, and an average isocyanate functionality of from 1.8 to 6.0.

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