发明名称 |
METHOD FOR PRODUCING CYCLIC ESTER-MODIFIED GLUCAN DERIVATIVE |
摘要 |
Disclosed is a method for producing a cyclic ester-modified glucan derivative wherein generation of homopolymers of the cyclic ester can be highly suppressed. Specifically disclosed is a method for producing a modified glucan derivative to which a cyclic ester is graft-polymerized, wherein a glucan derivative having a hydroxyl group and a cyclic ester are reacted in a solvent in the presence of a ring-opening polymerization catalyst. In this method, (1) the ring-opening polymerization catalyst is composed of a metal complex which does not initiate polymerization of the cyclic ester by itself; (2) the solvent is composed of an aromatic hydrocarbon solvent having a solubility in water at 20°C of not more than 10% by weight; and (3) the ratio of the solvent is set at not less than 60 parts by weight per 100 parts by weight of the glucan derivative having a hydroxyl group. |
申请公布号 |
KR20080094800(A) |
申请公布日期 |
2008.10.24 |
申请号 |
KR20087020881 |
申请日期 |
2008.08.26 |
申请人 |
DAICEL CHEMICAL INDUSTRIES, LTD. |
发明人 |
UMEMOTO KOICHI;KATAYAMA HIROSHI |
分类号 |
C08B15/00;C08G63/82 |
主分类号 |
C08B15/00 |
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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