发明名称 |
Process for preparing ethylene-vinyl alcohol copolymer composition, and process for producing ethylene-vinyl alcohol copolymer pellets |
摘要 |
An ethylene-vinyl alcohol copolymer alcohol solution comprising an ethylene-vinyl alcohol copolymer and an alcohol having a carbon number of not greater than 4 is brought into contact with an aqueous solution of at least one additive selected from a carboxylic compound, a boron compound and a phosphoric compound to replace a part or all of the alcohol with water, whereby an ethylene-vinyl alcohol copolymer composition containing the additive is prepared. This preparation process makes it possible to efficiently replace the alcohol in the ethylene-vinyl alcohol copolymer alcohol solution with water, and homogeneously incorporate the thermal stabilizer in the composition. |
申请公布号 |
US9221194(B2) |
申请公布日期 |
2015.12.29 |
申请号 |
US200812810460 |
申请日期 |
2008.12.22 |
申请人 |
THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD. |
发明人 |
Fujimura Keisuke;Beniya Yasufumi;Harao Akio;Nagao Yoshiharu;Okamoto Shinji |
分类号 |
B29B9/12;C08J3/12;C08J3/215;C08K5/09 |
主分类号 |
B29B9/12 |
代理机构 |
Kratz, Quintos & Hanson, LLP |
代理人 |
Kratz, Quintos & Hanson, LLP |
主权项 |
1. A process for preparing ethylene-vinyl alcohol copolymer composition comprising the steps of:
preparing an ethylene-vinyl alcohol copolymer alcohol solution comprising an ethylene-vinyl alcohol copolymer and an alcohol having a carbon number of not greater than 4; and bringing the ethylene-vinyl alcohol copolymer alcohol solution into contact with an aqueous solution of at least one additive selected from a carboxylic compound, a boron compound and a phosphoric compound to replace at least a part of the alcohol with water with stirring in a container at 40° C. to 140° C., whereby a pasty ethylene-vinyl alcohol copolymer composition comprising the ethylene-vinyl alcohol copolymer and the additive is recovered. |
地址 |
Osaka JP |