发明名称 |
Method to reduce gel formation in PET resin |
摘要 |
<p>There is disclosed a process for reducing the number of gels generated in polyethylene terephthalate (PET) resin. Gels are crosslinked polymers created by thermal and thermo-oxidative degradation induced during polymer production. The instant process comprises the addition of primary and secondary antioxidants prior to the PET polycondensation reaction in order to reduce the amount of thermal degradation which occurs. The polyethylene terephthalate produced by this process formed approximately 25 to 90% fewer gels while maintaining physical properties suitable for use in fiber, film, and molding applications.</p> |
申请公布号 |
EP0926178(A1) |
申请公布日期 |
1999.06.30 |
申请号 |
EP19980124356 |
申请日期 |
1998.12.22 |
申请人 |
ARTEVA TECHNOLOGIES S.A.R.L. |
发明人 |
HUANG, XIAOYAN;DOMINGUEZ, LIGIA |
分类号 |
C08G63/183;C08G63/78;C08G63/80;C08G63/85;(IPC1-7):C08G63/78 |
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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