• 제목/요약/키워드: nitrile

검색결과 178건 처리시간 0.027초

염소화폴리에틸렌의 첨가가 폴리프로필렌-니트릴 고무 블렌드의 모폴로지 및 기계적물성에 미치는 영향 (Effect of Chlorinated Polyethylene(cPE) on Morphology and Mechanical Properties of Polypropylene(PP) and Nitrile Rubber(NBR) Blends)

  • 장영욱;원종훈;주현석;정경호
    • Elastomers and Composites
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    • 제40권3호
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    • pp.204-211
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    • 2005
  • 염소화폴리에틸렌이 비상용성 블렌드인 폴리프로필렌과 니트릴고무 블렌드의 모폴로지와 기계적물성에 미치는 영향을 블렌드의 조성 및 cPE의 첨가량을 변화시켜가며 조사하였다. 염소화폴리에틸렌을 첨가함에 따라 분산상의 크기가 감소되며 분산상 크기가 보다 균일하게 됨을 알 수 있었으며, 블렌드의 인장강도, 인열강도, 파단신율이 크게 증가됨을 알 수 있었다. 모폴로지와 기계적물성의 변화로부터 상용화제의 적정 첨가량은 니트릴고무에 대해 5-10 wt% 인 것으로 판단되었다.

A Simple and One-pot Oxidative Conversion of Alcohols or Aldehydes to the Nitriles using NaIO4/KI in Aqueous NH3

  • Zolfigol, Mohammad Ali;Hajjami, Maryam;Ghorbani-Choghamarani, Arash
    • Bulletin of the Korean Chemical Society
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    • 제32권12호
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    • pp.4191-4194
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    • 2011
  • Sodium periodate ($NaIO_4$) and potassium iodide (KI) in aqueous ammonia has been used for the one-pot synthesis of nitriles from the corresponding aldehydes and alcohols in moderate to good yield. This transformation, proceeds via an in situ oxidation- imination-aldimine oxidation sequence.

Thermal and Photoinduced Silylallylation Reactions of Organic Halides with 3-Stannyl-2-(silylmethyl)propene

  • 강경태;황성심;곽우영;윤웅찬
    • Bulletin of the Korean Chemical Society
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    • 제20권7호
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    • pp.801-804
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    • 1999
  • Thermal and photoinduced silylallylation reactions of organic halides with 3-stannyl-2-(silylmethyl)propene are explored. Silylallylations occur in moderate to high yields, producing various functionalized allylsilane products in which halide carbon is bonded to the terminal alkenic carbon of allylsilane with the removal of tributyltin group. The reactions, which tolerate functional groups such as carbonyl, ester, nitrile, acetal, and ketal, hold synthetic potential for the construction of functionalized allylsilanes.

2-Benzothiazolylhydrazones with Cation Radicals in Nitrile Solvents. Formations of 1,2,4-Triazoles and Triazolo[3,4-b]benzothiazoles

  • 박군하;전건;오시화
    • Bulletin of the Korean Chemical Society
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    • 제21권4호
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    • pp.425-428
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    • 2000
  • Arenealdehyde 2-benzothiazolylhydrazone in thianthrene cation radicalafforded triazolo[3,4-b]benzothiazoles and 1,2,4-triazoles as major and minor product, respectively. On the contrary the similar reaction in tris(2,4-dibromophenyl)aminium hexachloroantimonate gave 1,2,4-triazoles and triazolo[3,4-b]benzothiazoles as ma-jor and minor product, respectively.