发明名称 |
SCREW DESIGNS HAVING IMPROVED PERFORMANCE WITH LOW MELTING PET RESINS |
摘要 |
Disclosed is a process for a melt processing a polyethylene terephthalate. The polyester particles have at least two melting peaks. The polyester particles may have an It. V. at their surface which is less than 0.25 dL/g higher than the It. V. at their center. The polyester particles may have not been solid stated. The melt processing device comprises a screw with a total length (9), L, a feed zone length (3) in the range from 0.1 SL and 0.45L, a taper angle, in the range from 0.5 degrees and 5.0 degrees and a compression ratio, CR, in the range from 2.0 and 5Ø |
申请公布号 |
CA2726638(C) |
申请公布日期 |
2013.04.16 |
申请号 |
CA20092726638 |
申请日期 |
2009.06.02 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
SHELBY, MARCUS DAVID;DONELSON, MICHAEL EUGENE;COLHOUN, FREDERICK LESLIE;STAFFORD, STEVEN LEE;STEWART, MARK EDWARD;WEINHOLD, STEPHEN;BRANSCOME, LARRY WAYNE;BOOCHARD, EDWARD LEWIS;ESTEP, ROBERT NOAH |
分类号 |
B29C45/60;B29C47/60 |
主分类号 |
B29C45/60 |
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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