发明名称 |
CROSS-COPOLYMER AND METHOD FOR PRODUCING SAME |
摘要 |
The purpose of the present invention is to provide: a cross-copolymer in which a residual catalyst component remains in a reduced amount and which has improved transparency, applicability to medical materials and yellowish discoloration resistance; and a method for producing the cross-copolymer. According to the present invention, a cross-copolymer is provided, wherein the cross-copolymer is produced through a coordination polymerization step of carrying out the copolymerization of an olefin monomer, an aromatic vinyl compound monomer and an aromatic polyene using a single-site coordination polymerization catalyst to synthesize an olefin-(aromatic vinyl compound)-(aromatic polyene) copolymer and a subsequent anionic polymerization step of carrying out polymerization in the co-presence of the olefin-(aromatic vinyl compound)-(aromatic polyene) copolymer and an aromatic vinyl compound monomer using an anionic polymerization initiator, said cross-copolymer being characterized in that the total mass of aluminum and lithium, which are residual catalyst components, contained in the cross-copolymer is 200 ppm or less. |
申请公布号 |
WO2015174485(A1) |
申请公布日期 |
2015.11.19 |
申请号 |
WO2015JP63873 |
申请日期 |
2015.05.14 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
ARAI, TORU;TSUKAMOTO, AYUMU;SASAKI, ERI |
分类号 |
C08F297/02;A61L29/00;A61L31/00;C08F4/6592;C08F6/08;C08F212/00 |
主分类号 |
C08F297/02 |
代理机构 |
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代理人 |
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主权项 |
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