http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
曺 棕 鉉 全南大學校開發硏究所 1964 農業科學技術硏究 Vol.2 No.-
Castor oil is dehydrated by heating at 240℃ under a pressure of 20mmHg with NaHSO₄ and NaHS0₃ as catalysts, and the dehydrated castor oil is combined with maleic anhydride as much as 9% while avoiding gel formation. By this result, oil's drying properties are somewhat lowered in proportion to the amount of combined maleic anhydride. However, after neutralizing the free acid radicals introduced to fatty acid. it readily emulsifies in water and it's dried coating shows better resistance against water. acid and alkalie.