发明名称 |
Process for production of ethylene oxide copolymer |
摘要 |
An object of the present invention is to provide a process which can produce, easily and with good productivity and reproducibility, an ethylene oxide copolymer provided with desired compositional ratios of monomers and a desired molecular weight and further with a desired melting point. As a means of achieving this object, a process according to the present invention for production of an ethylene oxide copolymer is a process comprising a step of polymerizing a monomer mixture including ethylene oxide as a main component, thereby producing the ethylene oxide copolymer, with the process being characterized in that the polymerization step includes at least one step each of the following steps: a step in which only the ethylene oxide is supplied to thus polymerize it; and a step in which the ethylene oxide and another monomer are supplied to thus polymerize them.
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申请公布号 |
US2005197485(A1) |
申请公布日期 |
2005.09.08 |
申请号 |
US20050051168 |
申请日期 |
2005.02.05 |
申请人 |
DAI-ICHI KOGYO SEIYAKU CO., LTD. |
发明人 |
SAEKI KOICHIRO;TAKEI KAZUO;KURIYAMA TOSHIAKI;YUKITAKE MASASHI;TOBA TAKETO;MIZUSHIMA MAKOTO;KONO MICHIYUKI;KIKUTA MANABU;NISHIURA MASAHITO |
分类号 |
C08G65/02;C08G65/08;C08G65/14;(IPC1-7):C08G65/34 |
主分类号 |
C08G65/02 |
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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