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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 24, Number 2
JKCSEZ 24(2)
April 20, 1980 

Polymerization of Lactams (Ⅵ). Synthesis and Catalytic Effect of Potassium Salt of 3-(N-Carbonylpyrrolidone)-propanoic Acid and 3-(N-Carbonylpyrrolidone)-propenoic Acid

Lactam 의 중합 (제6보). 3-(N-Carbonylpyrrolidone)-propanoic Acid 와 3-(N-Carbonylpyrrolidone)-propenoic Acid 의 Potassium Salt 의 합성 및 2-Pyrrolidone 음이온중합
Y. W. Park, G. S. Sur, Sam K. Choi

박영욱, 서길수, 최삼권
3-(N-Carbonylpyrrolidone)-propanoic acid의 potassium-salt와 3-N-carbonyrrolidone)-propenoic acid의 potassium-salt를 합성하고 이것을 2-pyrrolidone 음이온중합의 개시제로 사용하여 그 효과를 조사하였다. 50℃에서 KOH의 농도를 2mole%로 고정시키고, 개시제를 1.5, 1.0, 0.5mole%로 변화시켰을때 1.0mole%에서 좋은 결과를 얻을 수 있었다. 3-(N-Carbonylpyrrolidone)propenoic acid K-salt/KOH catalysis에 의하여 합성한 nylon 4의 inherent viscosity는 2.3dl/g이였고 3-(N-carbonylpyrrolidone)-propanoic acid K-salt 개시제에 의하여 합성한 중합체의 ingerent viscosity는 1.2dl/g이었다.

3-(N-Carbonylpyrrolidone)-propanoic acid potassium-salt and 3-(N-carbonylpyrrolidone)propenoic acid potassium-salt were synthesized by the reaction of 2-pyrrolidone potassium-salt with succinic anhydride and maleic anhydride in acetone and in acetone and in benzene. The anionic polymerization of 2-pyrrolidone with 3-(N-carbonylpyrrolidone)-propanoic acid potassium-salt or 3-(N-carbonylpyrrolidone)-propenoic acid potassium-salt as an initiator and potassium hydroxide as a catalyst was studied. It was found that 2.0 and 1.0 mole %, concentration of catalyst and initiator, and temperature of 50℃ was the optimum condition obtaining highest conversion and viscosity of polymer. The inherent viscosity of nylon 4 was measured to be 1.2 dl/g and 2.3 dl/g.

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