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    Gd-containing, anti-coking solid acid catalysts and preparation method and use thereof
    81.
    发明授权
    Gd-containing, anti-coking solid acid catalysts and preparation method and use thereof 有权

    公开(公告)号：US10307735B2

    公开(公告)日：2019-06-04

    申请号：US15649222

    申请日：2017-07-13

    Applicant: Korea Research Institute of Chemical Technology

    Inventor： Sung Tak Kim ,  Geun Jae Kwak ,  Ki Won Jun ,  Ahron Hwang ,  Seok Chang Kang

    IPC: B01J29/06 ,  B01J23/10 ,  B01J35/00 ,  B01J35/10 ,  C10G11/05

    Abstract: The present invention relates to an anti-coking catalyst having a physical property of reducing coke formation, which comprises a solid acid catalyst containing gadolinium (Gd) on the surface, a preparation method thereof, and a use thereof. The preparation method includes a first step of determining the amount of gadolinium (Gd) or a Gd-providing precursor to be used relative to the total weight of the solid acid catalyst, which reducing the coking of a specific solid acid catalyst below a specific level under a specific reaction condition; and a second step of preparing a Gd-containing solid acid catalyst using the amount determined in the first step. The catalyst according to the present invention is a catalyst in which an appropriate weight ratio of gadolinium is supported on the surface of a pure solid acid substance or solid acid substance on which a specific metal is supported. Therefore, the production of coke on the catalyst surface is inhibited while maintaining the activity of the solid acid catalyst in a hydrocarbon conversion reaction, and as a result, the catalyst of the present invention exhibits an effect of improving its lifespan.

    Polyamide based polymer compositions comprising cyclic compound and polymer based composite material using the same
    86.
    发明授权
    Polyamide based polymer compositions comprising cyclic compound and polymer based composite material using the same 有权

    公开(公告)号：US10100161B2

    公开(公告)日：2018-10-16

    申请号：US15658528

    申请日：2017-07-25

    Applicant: Korea Research Institute of Chemical Technology

    Inventor： Youngjae Yoo ,  Hwan Seok Choi ,  Yong Seok Kim ,  Byoung Gak Kim ,  Dong-Gyun Kim ,  Sung-Goo Lee ,  Dohyun Im

    IPC: C08K5/20 ,  C08F20/00 ,  C08G63/00 ,  C08J5/04 ,  B29B7/00 ,  B29C47/00 ,  B29C45/00 ,  B29K77/00 ,  B29K105/12 ,  B29K307/04 ,  B29K309/08

    Abstract: The present disclosure relates to a polyamide-based polymer composition with superior fluidity and a polyamide-based composite material with superior mechanical strength prepared therefrom. More specifically, it relates to a polyamide-based polymer composition containing 0.1-5 parts by weight of dicyclohexylmethane bisdecanoamide, which is a cyclic compound, as a fluidity control agent based on 100 parts by weight of a mixture consisting of 20-90 wt % of a polyamide-based resin and 10-80 wt % of a reinforcing fiber, a polyamide-based composite material prepared using the same, and a method for preparing the same. The polymer composition according to the present disclosure, wherein dicyclohexylmethane bisdecanoamide is used as a fluidity control agent, provides an effect of reducing friction between a molten resin and a processing machine and greatly reducing torque by effectively dispersing a reinforcing fiber in a polyamide-based resin. Also, the polymer composition according to the present disclosure may be usefully used in compounding, extrusion molding and injection molding of polyamide-based engineering plastics containing reinforcing fibers at high contents. In addition, according to the present disclosure, the addition of the fluidity control agent greatly improves flowability during processing. Therefore, a polyamide-based composite material with superior mechanical strength can be prepared under relatively mild conditions because uniform mixing of the reinforcing fiber and the polymer resin is induced.

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