发明名称 |
ALUMINUM CONTAINING POLYESTER POLYMERS HAVING LOW ACETALDEHYDE GENERATION RATES |
摘要 |
A polyester polymer composition containing polyester polymers such as polymers having repeating ethylene terephthalate units, aluminum atoms in an amount of at least 3 ppm based on the weight of the polymer, the polyester polymers having an It.V. of at least 0.72 dL/g obtained through a melt phase polymerization and a residual acetaldehyde level of 10 ppm or less. Also provided are polyester polymer compositions containing polyester polymers and: (i) aluminum atoms (ii) alkaline earth metal atoms or alkali metal atoms or alkali compound residues, and (iii) a catalyst deactivator such as a phosphorus compound. The phosphorus compound is added to the polyester melt either late in the polycondensation or upon remelting a solid polyester polymer. The polyester polymer exhibits good L* brightness, clarity, and low levels of acetaldehyde generated upon melting. |
申请公布号 |
EP1924628(A2) |
申请公布日期 |
2008.05.28 |
申请号 |
EP20060790179 |
申请日期 |
2006.09.06 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
JERNIGAN, MARY THERESE;ARMENTROUT, RODNEY SCOTT;VENETT, KENRICK LYLE;DEBRUIN, BRUCE, ROGER |
分类号 |
C08G63/02;C08G63/181;C08G63/84;C08K3/00;C08K3/10;C08K3/32;C08K5/00;C08K5/48;C08K5/56;C08K13/02 |
主分类号 |
C08G63/02 |
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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