发明名称 |
POLYVINYL ALCOHOL BASED RESIN COMPOSITION |
摘要 |
<p>The present invention provides a polyvinyl alcohol-based resin (PVOH-based resin) composition having less coloration from melt processing and having high aging stability of the melt viscosity. The present invention relates to a polyvinyl alcohol-based resin composition comprising a polyvinyl alcohol-based rein having a structural unit represented by the following formula (1) and having an absorbance of 0.1 to 0.3 of 280 nm in an ultraviolet absorbance spectrum as a 4 mass% aqueous solution, a carboxylic acid and an alkaline (earth) metal salt, wherein when an aqueous solution of the polyvinyl alcohol-based resin composition is prepared so as to have a content of the polyvinyl alcohol-based resin of 4 mass%, the pH of the aqueous solution at 20°C is from 5.5 to 7:
[wherein R 1 , R 2 and R 3 independently represent a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and R 4 , R 5 and R 6 independently represent a hydrogen atom or an organic group].</p> |
申请公布号 |
EP2426172(B1) |
申请公布日期 |
2014.05.14 |
申请号 |
EP20100769739 |
申请日期 |
2010.04.27 |
申请人 |
THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD. |
发明人 |
SHIBUTANI, MITSUO;INOUE, KAORU;TAKAHASHI, YUICHI |
分类号 |
C08L29/04;C08F16/06;C08F18/08;C08F216/02;C08J5/18;C08K5/09 |
主分类号 |
C08L29/04 |
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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