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    METHOD FOR PRODUCING A COPOLYMER FOAM WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS
    3.
    发明申请
    METHOD FOR PRODUCING A COPOLYMER FOAM WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS 有权

    公开(公告)号：US20220145034A1

    公开(公告)日：2022-05-12

    申请号：US17439107

    申请日：2020-03-16

    Applicant: Arkema France

    Inventor： Clio COCQUET

    IPC: C08J9/12 ,  B29C44/42

    Abstract: A process for producing a copolymer foam containing polyamide blocks and polyether blocks, including the following steps: mixing the copolymer in the melt state with a blowing agent; foaming of the mixture of copolymer and blowing agent, wherein the blowing agent includes a mixture of dinitrogen and carbon dioxide. Also, a copolymer foam containing polyamide blocks and polyether blocks which can be obtained by such a production process.

    Polymer Composition For Waterproof-Breathable Films
    7.
    发明公开
    Polymer Composition For Waterproof-Breathable Films 审中-公开

    公开(公告)号：US20230159751A1

    公开(公告)日：2023-05-25

    申请号：US17995622

    申请日：2021-04-07

    Applicant: ARKEMA FRANCE

    Inventor： Clio COCQUET ,  Sébastien CALLOUET ,  Laurent CARTIER

    IPC: C08L77/02 ,  C08G69/40

    CPC classification number: C08L77/02 ,  C08G69/40 ,  C08L2203/16

    Abstract: A composition of: 75 to 98% by weight, relative to the weight of the composition, of at least one copolymer A containing polyamide blocks and polyether blocks; 2 to 15% by weight, relative to the weight of the composition, of at least one copolymer B including units derived from ethylene, from an alkyl (meth)acrylate and from a comonomer including at least one acid, anhydride or epoxide function; and 0 to 10% by weight, relative to the weight of the composition, of at least one additive. The polyether blocks of copolymer A include polyethylene glycol blocks. Further, a process for manufacturing a film and to said film.

    METHOD FOR PRODUCING A COPOLYMER FOAM WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS
    8.
    发明申请
    METHOD FOR PRODUCING A COPOLYMER FOAM WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS 有权

    公开(公告)号：US20210261745A1

    公开(公告)日：2021-08-26

    申请号：US17256721

    申请日：2019-07-02

    Applicant: Arkema France

    Inventor： Clio COCQUET ,  Helena CHEMINET ,  Yves DEYRAIL ,  Audrey DURIN ,  Marc MIRALLES

    IPC: C08J9/00 ,  C08J9/12 ,  B29C44/02 ,  B29C44/04 ,  B29C44/34

    Abstract: The invention relates to a process for manufacturing a copolymer foam containing polyamide blocks and polyether blocks, comprising the following steps: mixing the copolymer melt with a blowing agent, said copolymer having a coefficient of thermal diffusivity a and a crystallization temperature Tc; providing a mold of thickness h at a temperature Tm; injecting the mixture of the copolymer and of the blowing agent at a temperature Tp, into the closed mold; foaming the mixture by opening the mold; in which the maintenance time between the injection of the mixture of the copolymer and of the blowing agent into the closed mold and the opening of the mold is within the range extending from (topt−25%) to (topt+25%), topt being expressed in seconds and obtained by equation (I): t opt = - 1 π 2 ⁢ h 2 a ⁢ ln ⁡ ( π 4 ⁢ T m - T c T m - T p ) , ( I ) in which a is expressed in m2/s, h is expressed in m and Tm, Tc and Tp are expressed in ° C.

    NON-CROSSLINKED COPOLYMER FOAM COMPOSITION WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS
    9.
    发明申请
    NON-CROSSLINKED COPOLYMER FOAM COMPOSITION WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS 审中-公开

    公开(公告)号：US20190382546A1

    公开(公告)日：2019-12-19

    申请号：US16468197

    申请日：2018-02-08

    Applicant: Arkema France

    Inventor： Clio COCQUET ,  Helena CHEMINET ,  François FERNAGUT ,  Yves DEYRAIL ,  Quentin PINEAU

    IPC: C08J9/00 ,  C08J9/12 ,  C08J9/08 ,  C08L87/00 ,  C08K3/013

    Abstract: The present invention relates to a non-crosslinked block copolymer foam composition, characterised in that it is in the form of a polymer matrix comprising closed cells containing gas, said matrix comprising: from 90 to 99.9% by weight of said block copolymer; and from 0.01 to 10% by weight of metal carbonate, for the total weight of the foam composition. The present invention also relates to a foamable composition and a method for manufacturing said foam, as well as the use of the foam in sports shoe soles, balloons or balls, gloves, personal protection equipment, rail soles, automobile parts, construction parts, electrical and electronic equipment parts, audio equipment, sound- and/or heat-proofing, and parts used to damp vibrations.

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