Solvent composition, adhesive composition, and method of bonding surfaces

    公开(公告)号:US11326078B2

    公开(公告)日:2022-05-10

    申请号:US16497840

    申请日:2018-04-02

    摘要: In an embodiment a solvent composition can comprise, based on the total volume of the solvent composition, 10 to 95 volume percent of a first solvent, wherein the first solvent has Hansen solubility parameters of: 15 MPa0.5≤δD≤17 MPa0.5, 4≤δP≤10.5 MPa0.5, and 7≤δH≤10 MPa0.5; 5 to 95 volume percent of a second solvent, wherein the second solvent has Hansen solubility parameters of: 16 MPa0.5≤δD≤17.5 MPa0.5, 0≤δP≤3 MPa0.5, and 0≤δH≤3 MPa0.5; and 0 to 85 volume percent parachlorobenzotrifluoride; wherein the amounts of the first solvent, the second solvent, and parachlorobenzotrifluoride sum to at least 85 volume percent. The first solvent can comprise methyl acetate, acetone, dimethyl carbonate, ethyl acetate, n-butylamine, propyl acetate, tetrahydrofuran, or a combination thereof. The second solvent can comprise cyclohexene, cyclohexane, cyclopentane, methylcyclohexane, or a combination thereof. The solvent compositions are particularly useful in an adhesive composition. An adhesive composition includes the solvent composition, a rubber, and a tackifying resin. A method of bonding two surfaces is also described.

    ADHESIVE SHEET
    4.
    发明申请

    公开(公告)号:US20210309890A1

    公开(公告)日:2021-10-07

    申请号:US17269592

    申请日:2019-08-19

    摘要: Provided is a pressure-sensitive adhesive sheet that may be used for the grinding of a hard and brittle substrate in a backgrinding step for the hard and brittle substrate, the pressure-sensitive adhesive sheet being excellent in all of low contamination property, productivity, grinding accuracy, and peelability. The pressure-sensitive adhesive sheet of the present invention includes a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer has a thickness of from 1 μm to 300 μm, and wherein a microhardness H (Pa) of the pressure-sensitive adhesive layer at 25° C. and the thickness, which is represented by hA (μm), of the pressure-sensitive adhesive layer satisfy a relationship represented by the following expression (1). log H≥1.9385×log hA+4.2611 . . . (1)

    ADHESIVE MASS, IN PARTICULAR FOR STRIPPABLE ADHESIVE STRIPS AND USE FOR ADHERING ON COATED WOODCHIP WALLPAPER

    公开(公告)号:US20190078000A1

    公开(公告)日:2019-03-14

    申请号:US15767229

    申请日:2016-10-13

    申请人: TESA SE

    摘要: An adhesive mass consisting of (a) at least one elastomer component, of a polybutadiene-polyvinyl aromatic block copolymer type, having a proportion with respect to the total adhesive mass of 42 to 55 wt. % and having a deblock proportion with respect to the total block copolymer content of 32 to 55 wt. %, (b) at least one adhesive resin, which is a hydrocarbon resin having a DACP value of at least +50° C. and at most +85° C., (c) optionally at least one soft resin having a proportion of 0 to 15 wt. % with respect to the total adhesive mass, and (d) optionally further additives, which adhesive mass is particularly suitable for adhering on rough substrates such as plaster or woodchip wallpaper.