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李大秀 慶北大學校 1966 論文集 Vol.10 No.-
There have been many studies for the insecticide of substituted phenols and phenol derivatives. I obtained insecticides from condensation of chloral hydrate with p-chloro phenol and with 2.4.-dichloro phenol. The structures of the insecticides obtained from condensation of chloral hydrate with p-chloro phenol and with 2.4-dichloro phenol were 2.2-bis (2-hydroxy 5-chloro phenyl) 1.1.1-trichloro ethane and 2.2-bis(2-hydroxy 3.5-dichloro phenyl) 1.1.1-trichloro ethane. The best conditions of the condensation were determined and the effects of insecticide against Long-winged grasshopper, Oxya velox fabricius and Japanese prominent, Stauropus fagi, persimilis Butler were inspected.
Carboxymethylcellulose 와 Acylonitrile의 그라프트 중합과 그에 의해 유도된 고흡수성 수지
李大秀 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1
The highly water absorbable resin was produed by graft-polymerization of acylonitril onto CMC and their successire alkali hydrolysis and heat treatment. The resin synthesized in this study absorbed up to 440 times water in weight. The water absorbable capacity depended on the molecular weight of branch polymer, on the degree of hydrolysis and highly on the heat treatment temperature.