Article
  • Synthesis of New Polyacetals
  • Jin JI, Choi YD
  • 새로운 폴리아세탈의 합성
  • 진정일, 최윤동
Abstract
New linear polyacetals were synthesized by reacting bis(4-hydroxyphenyl) sulfone and bis(4-hydroxyphenyl) sulfide with methylene halides in the presence of sodium hydroxide, and also by direct condensation of 2,2-bis(4''-hydroxycyclohexyl) propane with paraformaldehyde. The former reactions revealed strong solvent effect and in N,N-dimethylformamide the reactivity of the anions of diols decreased in the order of 2,2-bis(4''-hydroxyphenyl) propane, bis(4-hydroxyphenyl) sulfide, and bis(4-hydroxyphenyl) sulfone. Polymers obtained were of relatively low molecular weights with their intrinsic viscosity ranging 0.05~0.06 and number average molecular weight of 1150~2500.

수산화나트륨 존재하에 비스4-히드록시페닐 술폰과 황화비스4-히드로시페닐을 할로겐화메틸렌과 반응시켜서, 또 2,2-비스4''-히드록시시클로헥실 프로판(포화비스페놀A)을 산 촉매를 사용하여 파라포름알데히드와 직접 축합시켜 새로운 폴리아세탈을 합성하였다. 첫째 방법, 즉 치환반응에 의한 중합체의 합성에서 커다란 용매효과를 볼 수 있었으며, DMF에서 디올의 음이온은 2,2-비스4''-히드록시시클로헥실 프로판>황화비스4-히드록시페닐>비스4-히드록시페닐 술폰의 순서로 그 반응성이 감소함을 알았다. 합성된 중합체들은 비교적 낮은 분자량을 갖고 있었으며 ([η]=0.05~0.06, Mn=1150~2500), 구조에 따라 차이는 있으나 95~140℃의 연화점을 보여 주었다. 이들 중합체의 용해도에 서로 큰 차이가 있음도 관찰하였다.

Keywords:

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1978; 2(5): 249-255

    Published online Nov 25, 1978

  • 10.7317/pk.
  • Received on Nov 30, -0001
  • Revised on Nov 30, -0001
  • Accepted on Nov 30, -0001

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