...In 1940, the American Dow Chemical Company began marketing polyvinylidene chloride CH 2 -CCl 2 n (degree of polymerization n is about 200), a polymer of vinylidene chloride, under the trademark Saran. Velon (America) and Krehalon (Japan) are also trademarks for fibers with the same chemical structure as Saran. In fact, Saran is a copolymer consisting of 85% (by weight) vinylidene chloride, 13% vinyl chloride, and 2% acrylonitrile units. ... *Some of the terminology that mentions "Krehalon" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…1940年にアメリカのダウ・ケミカル社が,塩化ビニリデンを重合させたポリ塩化ビニリデンCH2-CCl2n(重合度nは約200)をサランという商標で市販しはじめた。ベロンVelon(アメリカ),クレハロンKrehalon(日本)もサランと同じ化学構造の繊維の商標である。実際にサランは,85%(重量)の塩化ビニリデン,13%の塩化ビニルおよび2%のアクリロニトリル単位から成る共重合体である。… ※「Krehalon」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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