Note
  • Copolymerization and Oligomerization of Isobutylene Oxide
  • Lee YB, Kim SK
  • Isobutylene Oxide의 공중합 및 올리고머 반응
  • 이윤배, 김선길
Abstract
To improve various physical properties of poly(icobutyene oxide) copolymers of isobutylene oxide and cyclohexene oxide have been synthesized with triisobutylaluminum as catalyst. The molecular weights of the copolymers are rather lower than that of poly(isobutylene oxide)prepared with diethylzinc catalyst. The glass transition temperatures of the copolymers are between those of two homopolymer. The copolymers of isobutylene oxide and vinyl cyclohexene oxide showed better thermal stability. Oligomer of isobutylene oxide has been synthesized for polyol and lubricant application. Acid catalyzed oligomerization gave vary complex mixture. But base catalyzed affored the pentamer and hexamer rich oligomer mixtures.

Poly(isobutylene oxide)의 물리적 성질을 개선하기 위하여 isobutylene oxide와 cyclohexene oxide의 공중합체가 triisobutylaluminum을 촉매로 하여 합성되었다. 분자량은 diethylzinc를 촉매로 하여 만든 poly(isobutylene oxide)보다 낮았다. 유리전이온도는 두 개의 단일중합체 사이에 일정하게 분포되었다. Vinyl cyclohexene oxide와의 공중합체는 현저한 열안정성을 보여주었다. 폴리올이나 윤활제로 응용 가능한 올리고머가 제조되었다. 산촉매하에서는 복잡한 생성물 분포를 보여 주었으나 염기 촉매하에서는 오량체 및 육량체가 주인 생성물 분포를 보여주었다.

Keywords: isobutylene oxide; cyclohexene oxide; vinyl cyclohexene oxide; copolymer; oligomer

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    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
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  • 2023 Impact Factor : 0.4
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This Article

  • 2000; 24(1): 124-127

    Published online Jan 25, 2000