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    Expandable thermoplastic nanocomposite polymeric compositions with an improved thermal insulation capacity
    22.
    发明授权
    Expandable thermoplastic nanocomposite polymeric compositions with an improved thermal insulation capacity 有权
    具有改善的隔热能力的可膨胀的热塑性纳米复合材料聚合物组合物

    公开(公告)号：US08969466B2

    公开(公告)日：2015-03-03

    申请号：US13500763

    申请日：2010-10-06

    申请人： Riccardo Felisari ,  Olga Valentino ,  Alessandro Casalini

    发明人： Riccardo Felisari ,  Olga Valentino ,  Alessandro Casalini

    IPC分类号： C08K3/04 ,  C08J9/16 ,  C08J9/00

    CPC分类号： C08J9/0066 ,  C08J9/0071 ,  C08J2325/06

    摘要： Nanocomposite compositions based on expandable thermoplastic polymers which comprise: a) a polymeric matrix produced by the polymerization of a base comprising one or more polymerizable monomers; b) 1-10% by weight, calculated with respect to the polymer (a), of an expanding agent englobed in the polymeric matrix; c) 0.004-15% by weight, calculated with respect to the polymer (a), of an athermanous filler comprising nano-scaled graphene plates with a thickness (orthogonal to the graphene sheet) not greater than 150 nm, an average dimension (length, width, or diameter) not greater than 10 micrometers and a surface area>50 m2/g.

    摘要翻译： 基于可膨胀热塑性聚合物的纳米复合组合物，其包含：a）通过包含一种或多种可聚合单体的碱的聚合制备的聚合物基体; b）相对于聚合物（a）计算的占聚合物基质中的发泡剂的1-10重量％ c）相对于聚合物（a）计算的0.004-15重量％的包含不大于150nm厚度（与石墨烯片正交的）的纳米级石墨烯板的惰性填料，平均尺寸（长度 ，宽度或直径）不大于10微米，表面积> 50m 2 / g。

    METHOD FOR PREPARING AMIDINES
    26.
    发明公开
    METHOD FOR PREPARING AMIDINES 审中-公开

    公开(公告)号：US20240166656A1

    公开(公告)日：2024-05-23

    申请号：US18549412

    申请日：2022-03-03

    申请人： VERSALIS S.P.A.

    发明人： Nicola VECCHINI ,  Federico MONDINI

    IPC分类号： C07D487/04 ,  B01J21/04

    CPC分类号： C07D487/04 ,  B01J21/04

    摘要： A method for preparing amidines or derivatives thereof includes the step of subjecting N-(amino-alkyl) lactams to dehydration in the presence of a heterogeneous catalyst selected from a Lewis acid or an acid resin. The process includes selecting an acid catalyst from heterogeneous acid catalysts selected from Lewis acids or Lewis acids with Bronsted acid components, or heterogeneous acid catalysts based on acid resins.

    REACTION CONFIGURATION AND PROCEDURE FOR POLYMERS PRODUTION
    30.
    发明申请
    REACTION CONFIGURATION AND PROCEDURE FOR POLYMERS PRODUTION 有权

    公开(公告)号：US20220267482A1

    公开(公告)日：2022-08-25

    申请号：US17252013

    申请日：2019-06-11

    申请人： VERSALIS S.P.A.

    发明人： Gianni Marchetti ,  Giovanni Regattieri

    IPC分类号： C08F2/01 ,  C08F2/06

    摘要： There is a procedure for polymerisation in solution for the production of polymers. The procedure has the following steps: (A) continuously feeding one or more monomers, one or more solvents in a quantity comprised between 70% and 90% by weight with respect to the reagent mixture, and a catalytic system, to a first stirred reaction volume, wherein a single mixing cell is formed, in which the polymerisation begins, until a conversion is attained that varies from 20% to 70% with respect to the final conversion achieved and (B) proceeding the polymerisation in at least one second stirred reaction volume connected in series to the first reaction volume, in which two or more mixing cells are formed, at the outlet of which the final conversion of the monomer is attained. In the first reaction volume, the average residence time of the reagent mixture varies within an interval ranging from 10% to 25% with respect to the average residence time of the entire reaction volume.