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    Process for Producing Foam Article
    111.
    发明公开
    Process for Producing Foam Article 审中-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

    Applicant: Dow Global Technologies LLC

    Inventor： Sophie Gina Martha Van Lange ,  Jozef J.I. Van Dun ,  Miguel Albertodejusus

    IPC: C08J9/00 ,  C08J9/10 ,  B29C44/08

    CPC classification number: C08J9/0023 ,  C08J9/103 ,  B29C44/083 ,  C08J2353/00 ,  C08J2203/04 ,  C08J2201/026 ,  B29K2105/041

    Abstract: 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.

    SHOE MIDSOLE
    112.
    发明公开
    SHOE MIDSOLE 审中-公开

    公开(公告)号：US20230363490A1

    公开(公告)日：2023-11-16

    申请号：US18028918

    申请日：2021-09-28

    Applicant: COOPER-STANDARD AUTOMOTIVE, INC.

    Inventor： Krishnamachari GOPALAN ,  Vahid SHAAYEGAN

    IPC: A43B13/04 ,  C08J9/00 ,  C08J3/22 ,  C08J9/10

    CPC classification number: A43B13/04 ,  C08J9/0023 ,  C08J9/0066 ,  C08J3/22 ,  C08J9/103 ,  C08J2205/052 ,  C08J2323/08 ,  C08J2201/022 ,  C08J2201/026 ,  C08J2203/04 ,  C08J2431/04

    Abstract: A shoe midsole composed of a foamed peroxide-crosslinked polyolefin elastomer includes a silane-grafted polyolefin component, an elastomeric component, and additives dispersed in the foamed peroxide-crosslinked polyolefin elastomer. The elastomer component includes one or more elastomeric polymers selected from the group consisting of ethylene vinyl acetate copolymer, polyolefin elastomers, olefin block copolymer, polyoctenamer, anhydride modified ethylene copolymers, ethylene propylene diene terpolymer, and combinations thereof. The silane-grafted polyolefin component and elastomer component are crosslinked with C—C bonds. Advantageously, the foamed peroxide-crosslinked polyolefin elastomer is substantially free of silane crosslinking as formed and substantially free of water. Characteristically, the additives and one or more elastomeric polymers are in sufficient amount that a melting temperature of crystalline regions in the foamed peroxide-crosslinked polyolefin elastomer is greater than 100° C. as measured by differential scanning calorimeter thermographs.

    Naturally Sourced Chitin Foam
    113.
    发明公开
    Naturally Sourced Chitin Foam 审中-公开

    公开(公告)号：US20230340236A1

    公开(公告)日：2023-10-26

    申请号：US18138294

    申请日：2023-04-24

    Applicant: The Regents of the University of California

    Inventor： Marco Rolandi ,  John Felts

    IPC: C08L5/08 ,  B63B32/40 ,  C08J9/30

    CPC classification number: C08L5/08 ,  B63B32/40 ,  C08J9/30 ,  C08J2201/026 ,  C08J2205/052 ,  C08J2205/10 ,  C08J2207/00 ,  C08L2201/06 ,  C08L2203/14

    Abstract: Closed cell chitin foam is provided. The closed-cell chitin foam composition does not absorb water, is biodegradable, and is mechanically characterized by a density range of 16 to 800 kg/m3, closed-cell pore sizes ranging from 50 microns to 1 mm, an elastic modulus of 3 to 175 MPa, and a tensile strength of 0.15 to 6.5 MPa. The chitin is at least 70% acetylated. In one aspect, the foam is enclosed in a shell e.g. in the form of a surfboard. Chitin foam according to this invention is fully biodegradable. The chitin foam overcomes the current problems with foams that contain polyurethane and polystyrene, and which are manufactured from petroleum-based sources. Petroleum based foams are not renewable, have an adverse impact on our environment, and pose significant health hazards to those who manufacture them. The chitin foam with its water-based manufacturing process and naturally sourced chitin, solves these problems.

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