A modified polyisocyanate
    1.
    发明公开

    公开(公告)号:US20240301122A1

    公开(公告)日:2024-09-12

    申请号:US18044460

    申请日:2021-09-29

    IPC分类号: C08G18/78 C08G18/02 C08G18/08

    摘要: The invention relates to a modified polyisocyanate and use thereof, especially as a crosslinking component in a water-soluble or water-dispersible coating composition. The modified polyisocyanate comprises iminooxadiazinedione structure and isocyanurate structure, wherein the weight ratio of the iminooxadiazinedione structure to the isocyanurate structure is not less than 1: 5; and relative to the total weight of the modified polyisocyanate, the total amount of molecules with a number average molecular weight greater than 2700 g/mol in the modified polyisocyanate is 4.1% by weight to 22% by weight; and the modified polyisocyanate is obtainable by the reaction of: an aminosulfonic acid, a polyisocyanate; a tertiary amine; and optionally a polyether alcohol containing ethylene oxide groups.

    Aqueous Polyurethane Urea Dispersion
    2.
    发明公开

    公开(公告)号:US20240034828A1

    公开(公告)日:2024-02-01

    申请号:US18265794

    申请日:2021-12-03

    摘要: The present invention relates to an aqueous polyurethane urea dispersion containing a polyurethane urea and a preparation process and use thereof, especially to the use in the field of coatings, adhesives or sealants, and the products obtained by coating, bonding or sealing with the polyurethane urea dispersion. The polyurethane urea of the aqueous polyurethane urea dispersion containing the polyurethane urea is obtained by the reaction of a system including the following components: a mixture of isocyanates, a polymer polyol, a monofunctional nonionic hydrophilic compound and a potentially anionic or anionic hydrophilic compound; said aqueous polyurethane urea dispersion has a viscosity of 5 s-18 s; relative to the total weight of said aqueous polyurethane urea dispersion, the amount of said polyurethane urea is 30 wt %-50 wt %. The aqueous polyurethane urea dispersion of the present invention has good compatibility with various organic solvents.