发明名称 |
Process for producing aromatic liquid crystalline polyester and film thereof |
摘要 |
Provided is a process for producing an aromatic liquid crystalline polyester comprising the steps of: charging 80 20 mol % of a compound represented by the following formula (I) and 20 to 80 mol % of a compound represented by the following formula (II) into a reaction vessel; conducting polycondensation reaction at a temperature from 270 to 350° C. to produce a aromatic liquid crystalline polyester; discharging the aromatic liquid crystalline polyester in a molten state from the reaction vessel and solidifying; then, pulverizing the solidified polyester into particles; and heat-treating at a temperature from 200 to 310° C.,The aromatic liquid crystalline polyester has improved low temperature molding processability, and the film thereof has sufficient heat-resistance and excellent gas barrier properties.
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申请公布号 |
US6656578(B2) |
申请公布日期 |
2003.12.02 |
申请号 |
US20020238597 |
申请日期 |
2002.09.11 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
OHBE YOSHITAKA;AKIYOSHI KAZUNORI;MORIYAMA SHINO |
分类号 |
C08G63/06;C08G63/80;C08J5/18;(IPC1-7):B32B15/02 |
主分类号 |
C08G63/06 |
代理机构 |
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地址 |
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