发明名称 |
POLYESTER RESIN, MOLDED OBJECT THEREOF, AND PROCESSES FOR PRODUCING THESE |
摘要 |
A polyethylene terephthalate resin which is obtained by melt polymerization at a reduced pressure or in an inert gas atmosphere and has the following properties (A) to (F): (A) the intrinsic viscosity [Q] is 0.4-2.5 dL/g; (B) the content of carboxy groups present at polymer ends is 30 meq/kg or lower; (C) the acetaldehyde content is 10 ppm or lower; (D) a hexafluoroisopropanol solution of the resin, when analyzed by the transmission method, has a hue which has an L value of 99 or larger and a b value of 0.4 or smaller; (E) the Mw/Mn is 1.8-2.3; and (F)the cyclic trimer content is 5 wt.% or lower. |
申请公布号 |
KR20070090225(A) |
申请公布日期 |
2007.09.05 |
申请号 |
KR20077015032 |
申请日期 |
2007.06.29 |
申请人 |
ASAHI KASEI CHEMICALS CORPORATION |
发明人 |
YOKOYAMA HIROSHI;OKAMOTO HIROSHIGE;AMINAKA MUNEAKI |
分类号 |
C08G63/183;B29C49/02;C08G63/78;C08G63/85 |
主分类号 |
C08G63/183 |
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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