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    Moisture curable polymer systems based on a mixture of polysilylated polyethers
    2.
    发明授权
    Moisture curable polymer systems based on a mixture of polysilylated polyethers 有权

    公开(公告)号：US10239998B2

    公开(公告)日：2019-03-26

    申请号：US15533364

    申请日：2015-12-05

    Applicant: Dow Global Technologies LLC

    Inventor： Thomas Willumstad ,  Subodh P. Jagtap

    IPC: C08G65/336 ,  C08G18/28 ,  C08G65/333 ,  C08L101/10 ,  C08G65/334

    Abstract: Low viscosity mixtures of polysilylated polyethers are described. The mixtures include a) 50 to 95 weight percent of one or more first polysilylated polyethers which are free of urea groups, have an average of two or more terminal hydrolysable silyl groups per molecule and have a molecular weight of 4,000 to 20,000 and 50 to 5 weight percent of one or more second polysilylated polyethers which are free of urea groups, have an average of 1.8 to 4 terminal hydrolysable silyl groups per molecule and have a molecular weight of 1000 to less than 400. The mixtures have surprisingly low viscosities, and are useful as curable components of adhesive, sealant, caulking and/or coating compositions.

    Hydrophilic Polyurethane Foam for Liquid Based Cleaning Applications
    5.
    发明申请
    Hydrophilic Polyurethane Foam for Liquid Based Cleaning Applications 审中-公开
    亲水性聚氨酯泡沫用于液体清洁应用

    公开(公告)号：US20150087737A1

    公开(公告)日：2015-03-26

    申请号：US14489537

    申请日：2014-09-18

    Applicant: Dow Global Technologies LLC

    Inventor： Yasmin N. Srivastava ,  Subodh P. Jagtap ,  Venkat S. Minnikanti ,  Rogelio Gamboa ,  Dwight Latham ,  Rajat Duggal

    IPC: C08G18/08 ,  C08G18/10

    CPC classification number: C08G18/10 ,  C08G18/283 ,  C08G18/4837 ,  C08G18/7671 ,  C08G2101/0058 ,  C08G2101/0066 ,  C08G2101/0083 ,  C08G18/48 ,  C08G18/12

    Abstract: A reaction system for forming a hydrophilic polyurethane foam for liquid based cleaning applications includes a composition that has a prepolymer component and an aqueous component. The prepolymer component is a reaction product of an isocyanate component that includes diphenylemethane diisocyanate (MDI) and a polyol component that includes a polyoxyethylene-polyoxypropylene polyol that has an polyoxyethylene content greater than 65 wt %, based on a total weight of the polyoxyethylene-polyoxypropylene polyol. The aqueous component includes at least 60 wt % of water and at least 0.5 wt % of a surfactant, based on a total weight of the aqueous component. A weight ratio of the prepolymer component to the aqueous component in the composition is from 0.5:2 to 2:0.5, the composition has a cream time of less than 20 seconds and a tack free time of less than 7 minutes, and the hydrophilic polyurethane foam for liquid based cleaning applications has a wet tear strength of at least 500 N/m.

    Abstract translation: 用于形成用于基于液体的清洁应用的亲水性聚氨酯泡沫的反应体系包括具有预聚物组分和水性组分的组合物。 预聚物组分是包括二苯基甲烷二异氰酸酯（MDI）和多元醇组分的异氰酸酯组分的反应产物，其包含聚氧乙烯 - 聚氧丙烯多元醇，其聚氧乙烯含量大于65重量％，基于聚氧乙烯 - 聚氧丙烯 多元醇。 含水组分包含至少60重量％的水和至少0.5重量％的表面活性剂，基于水性组分的总重量。 组合物中预聚物组分与水性组分的重量比为0.5:2至2:0.5，组合物的乳化时间少于20秒，粘着时间小于7分钟，亲水性聚氨酯 用于基于液体的清洁应用的泡沫具有至少500N / m的湿撕裂强度。

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