公开(公告)号：WO2009154698A1

公开(公告)日：2009-12-23

申请号：PCT/US2009/003335

申请日：2009-06-02

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： 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

IPC: B29C45/60 ,  B29C47/60

CPC classification number: B29C33/76 ,  B29C45/0001 ,  B29C45/60 ,  B29C47/0004 ,  B29C47/0014 ,  B29C47/0021 ,  B29C47/0023 ,  B29C47/60 ,  B29C47/6018 ,  B29K2067/00 ,  B29K2105/256

Abstract: 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 5.0.

Abstract translation: 公开了一种熔融加工聚对苯二甲酸乙二醇酯的方法。 聚酯颗粒具有至少两个熔融峰。 聚酯颗粒可能有一个。 在它们的表面上比它低于0.25dL / g。 在他们的中心。 聚酯颗粒可能不是固体的。 熔体处理装置包括具有总长度（9）的螺杆，L，进给区长度（3）在0.1SL和0.45L的范围内，锥角在0.5度和5.0度的范围内，压缩 比率，CR在2.0和5.0之间。