塗料原料とする魚油塩素化物の製造に関する研究-1-

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To open a new use of fish oil, the author obtains by chlorination of this material a resinlike substance that seems promising to be used as a main ingredient of coating like varnish. Fish oil dissolved in carbontetrachloride is bubbled by a current of chlorine gas till no more chlorination goes on. The oil should have been refined with alkali beforhand; for, free fatty acids exert bad influence upon the yield and the solidity of the product. The successful product is a white odorless powder that is soluble in most organic solvents except lower alcohols and ligroin. Though it is said that a highly chlorinated oil is unstable and sets free hydrogen chloride at ordinary temperature, the present product with about 60% chlorine is stable and considerably acidproof in usual conditions. It decomposes on heating to some extent and grows brown. When strongly heated, it decomposes to smoking, but not to burning. Its solution in toluene, for example, is quite transparent, slightly yellow and yields glossy, water-proof film with a high volume resistivity. It is durable to weathering tests and not corrosive at least toward iron, copper, and aluminium.
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