Provided is a method for preparing a thermoplastic elastomer composition which can obtain a molded body with both excellent appearance and a high level of rigidity. The method for preparing a thermoplastic elastomer composition comprises: a first process of melt-kneading polypropylene (A-1) having an intrinsic viscosity [η_cxis] of xylene insoluble content at 20℃ of 0.1 dl/g or more but less than 1.5 dl/g and ethylene-based copolymer rubber (B) in the presence of organic peroxide; and a second process of melt-kneading by further adding polypropylene (A-2) having an intrinsic viscosity [η_cxis] of xylene insoluble content at 20℃ of 1.5 dl/g or more and 7 dl/g or less, wherein the content of mineral oil (C) in the prepared thermoplastic elastomer composition is 5% by mass or less.

    [과제] 우수한 외관과 강성이 높은 레벨로 양립한 성형체를 얻을 수 있는 열가소성 엘라스토머 조성물의 제조 방법을 제공한다. [해결 수단] 하기 제 1 공정 및 제 2 공정을 포함하고, 제조되는 열가소성 엘라스토머 조성물 중의 광물유(C)의 함량이 5질량% 이하인, 열가소성 엘라스토머 조성물의 제조 방법: 제 1 공정:20℃ 크실렌 불용분의 고유 점도[ηcxis]가 0.1dl/g 이상 1.5dl/g 미만인 폴리프로필렌(A-1)과, 에틸렌계 공중합체 고무(B)를, 유기 과산화물의 존재 하, 용융 혼련하는 공정; 제 2 공정:20℃ 크실렌 불용분의 고유 점도[ηcxis]가 1.5dl/g 이상 7dl/g 이하인 폴리프로필렌(A-2)을 더 첨가하여 용융 혼련하는 공정.


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    Title :

    METHOD FOR PRODUCING THERMOPLASTIC ELASTOMER COMPOSITION


    Additional title:

    열가소성 엘라스토머 조성물의 제조 방법


    Contributors:

    Publication date :

    2023-03-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



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