METHOD OF PACKAGING BATTERY DEVICES
    7.
    发明公开

    公开(公告)号:US20230238619A1

    公开(公告)日:2023-07-27

    申请号:US18010503

    申请日:2020-07-30

    IPC分类号: H01M50/124 H01M50/133

    CPC分类号: H01M50/1245 H01M50/133

    摘要: A method of packaging a battery device with a metal shell, comprising: applying a waterborne two-component polyurethane composition to the metal shell of the battery device, and drying the applied polyurethane composition to form a packaging layer; wherein the polyurethane composition comprises, (A) an aqueous dispersion comprising a hydroxyl-functional polymer, wherein the hydroxyl-functional polymer comprises, by weight based on the weight of the hydroxyl-functional polymer, from 20% to 50% of structural units of a hydroxy-functional alkyl (meth)acrylate; from 0.1% to 10% of structural units of an acid monomer, a salt thereof, or mixtures thereof; and structural units of a monoethylenically unsaturated nonionic monomer; and (B) a polyisocyanate.

    AQUEOUS COMPOSITION
    9.
    发明公开
    AQUEOUS COMPOSITION 审中-公开

    公开(公告)号:US20230279213A1

    公开(公告)日:2023-09-07

    申请号:US18019295

    申请日:2020-08-31

    IPC分类号: C08L33/12

    CPC分类号: C08L33/12

    摘要: An aqueous composition comprising: (a) an aqueous dispersion of hybrid polymer particles with a fluorine content of 5% or more, wherein the hybrid polymer particles comprise, based on the weight of the hybrid polymer particles, (i) greater than 20% to 75% by weight of a first polymer component comprising a fluoroethylene vinyl ether copolymer, and (ii) from 25% to less than 80% by weight of a second polymer component, wherein the second polymer component is an acrylic copolymer comprising, based on the weight of the acrylic copolymer, from 0.15% to 1.2% by weight of structural units of a phosphorus-containing acid monomer, a salt thereof, or mixtures thereof, and structural units of a monoethylenically unsaturated nonionic monomer; and (b) from 5% to 30% by dry weight of colloidal silica, based on the total weight of the hybrid polymer particles and the dry weight of the colloidal silica. The aqueous composition can provide coatings with balanced dirt pick-up resistance and durability properties.