发明名称 |
CELLULOSE ESTER HAVING IMPROVED STABILITY TO WET HEAT |
摘要 |
<p>The present invention provides a cellulose ester in which heat resistance under wet condition is compatible with both releasability and spinnability even when the amount of the residual solvent is small in a casting process. The cellulose ester fulfills the following formula: 0.5 < ( B ) / ( A ) < 1.5
wherein (A) and (B) represent the total amount (in terms of molar amount) of residual sulfuric acid in 1 gram of the cellulose ester and the total amount (in terms of molar amount) of calcium contained in 1 gram of the cellulose ester, respectively.</p> |
申请公布号 |
EP1619209(B1) |
申请公布日期 |
2012.12.19 |
申请号 |
EP20040714483 |
申请日期 |
2004.02.25 |
申请人 |
DAICEL CHEMICAL INDUSTRIES, LTD. |
发明人 |
OZAKI, TORU;SHIBATA, TORU;SHIMAMOTO, SHU |
分类号 |
C08B3/06;C08B3/16;C08J5/18;C08K3/22;C08K3/30;C08L1/10;G02B5/30 |
主分类号 |
C08B3/06 |
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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