Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Synthesis of Mid-range Vinylidene Content Polyisobutylene by Using BF3/Alcohol Catalyst

삼불화붕소 착물촉매를 사용한 중반응성 폴리부텐의 합성

  • Park, Min-Sup (Department of Chemistry, Chungnam National University) ;
  • Kim, Yeong-Joon (Department of Chemistry, Chungnam National University)
  • 박민섭 (충남대학교 자연과학대학 화학과) ;
  • 김영준 (충남대학교 자연과학대학 화학과)
  • Received : 2018.01.30
  • Accepted : 2018.02.27
  • Published : 2018.06.10
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Abstract

Mid-range vinylidene content polyisobutylenes were prepared by using a Lewis acid catalyst. The best results were obtained when a complex catalyst composed of n-propanol as a cocatalyst and $BF_3$ as a main catalyst was used at the reaction temperature of -8 to $5^{\circ}C$ under a pressure of $2.5kg/cm^2$. The number average molecular weight ($M_n$) and viscosity of the polyisobutylenes were 500~1,000 g/mol and 20~210 cSt (at $100^{\circ}C$), respectively. The vinylidene content was 40~70% and easily varied by adjusting the reaction temperature.

중반응성 폴리부텐을 루이스산 촉매를 이용하여 합성하였다. 40~70% 비닐리덴 함량, 수평균 분자량 500~1,000 g/mol, 동점도 20~210 cSt (at $100^{\circ}C$)을 지닌 중반응성 폴리부텐은 노르말프로판올 조촉매와 삼불화붕소 주촉매로 구성된 착물촉매를 사용하여 $-8{\sim}5^{\circ}C$, 2.5 kg 조건에서 가장 좋은 결과로 얻어졌다. 비닐리덴 함량은 반응 온도를 조절하여 쉽게 변화시킬 수 있었다.

Keywords

References

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