Process for Producing Foam Article
    5.
    发明公开

    公开(公告)号:US20230407030A1

    公开(公告)日:2023-12-21

    申请号:US18253333

    申请日:2021-11-23

    IPC分类号: C08J9/00 C08J9/10 B29C44/08

    摘要: The present disclosure provides a process. In an embodiment, the process includes providing a foamable composition. The foamable composition includes an ethylene-based elastomer, a blowing agent, and a peroxide. The process includes heating the foamable composition to form a pliable formulation. The pliable formulation has (i) a viscosity (0.1 rad/s at 180° C.) from greater than 70,000 Pa·s to 2,000,000 Pa·s, (ii) a tan delta (0.1 rad/s at 180° C.) from 0.2 to less than 2, (iii) a strain hardening index greater than 2.5 to 6, and (iv) an extensional viscosity (1 s−1 at 180° C.) from greater than 400,000 Pa-s to 7,000,000 Pa-s. The process includes introducing the pliable formulation into a mold having an expandable mold cavity and unidirectionally expanding the expandable mold to form a crosslinked foam article. The process includes cooling, in the expanded mold, the crosslinked foam article; and removing the crosslinked foam article from the expandable mold.

    Adhesive Composition
    6.
    发明申请

    公开(公告)号:US20220213355A1

    公开(公告)日:2022-07-07

    申请号:US17603790

    申请日:2019-04-15

    IPC分类号: C09J123/08 C08L91/06

    摘要: The present disclosure provides a composition. The composition contains (A) an ethylene/α-olefin copolymer containing (i) ethylene and (ii) from 20 wt % to 35 wt % C6-C8 α-olefin comonomer, the ethylene/α-olefin copolymer having a density from 0.880 g/cc to 0.895 g/cc, a melt viscosity, at 177° C., from 4,000 mPa·s to 20,000 mPa·s, and a glass transition temperature from −55° C. to −20° C.; (B) a tackifier, and (C) a wax.