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2011-04-25 폴리우레탄계 접착제

2011-04-25 폴리우레탄계 접착제

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2 폴리우레탄의역사적배경 • 1937Otto Bayer (1902 -1982) develops the novel ppy yolyisocyanate-ppyolyadditionprocess. The basic idea

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