The present invention relates to conjugated diene-based copolymer composition and, more specifically, to a conjugated diene-based copolymer composition which includes: a first conjugated diene-based copolymer which includes 20-60 wt% of an aromatic vinyl monomer-derived repeating unit, 35-75 wt% of a first conjugated diene-based monomer repeating unit, and 1-10 wt% of a hydroxyalkyl (meth) acrylate monomer-derived repeating unit and has Mooney viscosity (MV) that is 30 to 120 at 100°C; and a second conjugated diene-based copolymer which includes 20-60 wt% of a α-methylstyrene monomer-derived repeating unit and 40-80 wt% of a second conjugated diene-based monomer-derived repeating unit, and has MV that is more than 120 and not more than 200 at 100°C. The present invention improves not only the abrasion resistance of a rubber composition but also processability and viscoelastic properties.

    본 발명은 공액디엔계 공중합체 조성물에 관한 것으로, 보다 상세하게는 방향족 비닐 단량체 유래 반복단위 20 중량% 내지 60 중량%, 제1 공액디엔계 단량체 유래 반복단위 35 중량% 내지 75 중량% 및 히드록시 알킬 (메트)아크릴레이트 단량체 유래 반복단위 1 중량% 내지 10 중량%를 포함하고, 100 ℃에서의 무니 점도(Mooney viscosity, MV)가 30 내지 120인 제1 공액디엔계 공중합체; 및 α-메틸스티렌 단량체 유래 반복단위 20 중량% 내지 60 중량% 및 제2 공액디엔계 단량체 유래 반복단위 40 중량% 내지 80 중량%를 포함하고, 100 ℃에서의 무니 점도(Mooney viscosity, MV)가 120 초과 내지 200 이하인 제2 공액디엔계 공중합체를 포함하는 공액디엔계 공중합체 조성물을 제공한다.


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    Title :

    CONJUGATED-DIENE BASED COPOLYMER COMPOSITION METHOD FOR PREPARING THE COPOLYMER COMPOSITION AND RUBBER COMPOSITION COMPRISING THE COPOLYMER COMPOSITION


    Additional title:

    공액디엔계 공중합체 조성물, 이의 제조방법 및 이를 포함하는 고무 조성물


    Contributors:
    LEE SE EUN (author) / KIM BYOUNG YUN (author) / YOON HYUNG WOON (author) / JO IN SUNG (author) / LEE JAE MIN (author) / CHOI WOO SEOK (author)

    Publication date :

    2019-06-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS