发明名称 |
Method for continuous treatment of saponified ethylene-vinyl acetate copolymer |
摘要 |
<p>The method of treating a saponified ethylene vinyl acetate copolymer (A) with an acid (B) and/or its salt (C) which comprises feeding a saponified ethylene-vinyl acetate copolymer (A') in which the acid (B) and/or salt (C) has been incorporated in advance to a column reactor from its top, simultaneously feeding an aqueous solution of the acid (B) and/or salt (C) from the bottom of the reactor to thereby effect a countercurrent contact of (A') with the aqueous solution of (B) and/or (C) , withdrawing the excess of the aqueous solution of acid (B) and/or salt (C) from the reactor top, and continuously withdrawing the treated saponified ethylene-vinyl acetate copolymer from the reactor bottom.</p> |
申请公布号 |
EP1108729(B9) |
申请公布日期 |
2008.02.13 |
申请号 |
EP20000126583 |
申请日期 |
2000.12.13 |
申请人 |
NIPPON GOHSEI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
NAGAO, YOSHIHARU;NEKI, YOUICHI;TANIGUCHI, MASAHIKO;NINOMIYA, KENJI |
分类号 |
C08F8/00;C08F8/12;C08F218/08 |
主分类号 |
C08F8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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