发明名称 |
Process for preparing polycondensation polymer compound |
摘要 |
The invention provides a novel preparation process of a polycondensation type polymer, an excellent polymer which is represented by lactic acid and the preparation process of the polymer, a polycondensation agent used for the preparation process, and an intermediate. Specifically, the invention provides a preparation process of the polycondensation type polymer, for example, polyamide, polyimide, polythioester and polyester, comprising bonding a carboxyl group comprising compound with an active hydrogen group comprising compound in the presence of haloiminium salt. The invention provides excellent polylactic acid having a controlled D/L-isomer ratio in the repeating structural units and preparation process of polylactic acid, and further provides a haloiminium salt compound used for the preparation process and an intermediate compound of acid chloride.
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申请公布号 |
US5719256(A) |
申请公布日期 |
1998.02.17 |
申请号 |
US19960730362 |
申请日期 |
1996.10.15 |
申请人 |
MITSU TOATSU CHEMICALS, INC. |
发明人 |
TAMAI, SHOJI;MORI, YUKIKO;GOTO, KENICHI;WATANABE, KATSUJI;KOHGO, OSAMU;SHIMIZU, KOTARO;KATAOKA, TOSHIYUKI;KUROKI, TAKASHI;YAMASHITA, WATARU;MIZUTA, HIDEKI;NAGATA, TERUYUKI |
分类号 |
C08G63/82;C08G63/87;C08G69/04;C08G69/28;C08G73/10;C08G75/26;(IPC1-7):C08G63/06 |
主分类号 |
C08G63/82 |
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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