Invention Grant
- Patent Title: Method and device for the continuous polycondensation of polyester material in the solid phase
- Patent Title (中): 聚酯材料在固相中连续缩聚的方法和装置
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Application No.: US10470988Application Date: 2001-02-26
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Publication No.: US07884177B2Publication Date: 2011-02-08
- Inventor: Camille Borer , Martin Muller , Brent Allan Culbert
- Applicant: Camille Borer , Martin Muller , Brent Allan Culbert
- Applicant Address: CH Uzwil
- Assignee: Buhler AG
- Current Assignee: Buhler AG
- Current Assignee Address: CH Uzwil
- Agency: Carella, Byrne, Cecchi
- Agent Francis C. Hand
- International Application: PCT/CH01/00124 WO 20010226
- International Announcement: WO02/068498 WO 20020906
- Main IPC: C08G63/80
- IPC: C08G63/80 ; C08G63/88 ; C08F6/26
Abstract:
The invention relates to a method and device for the continuous polycondensation of polyester material in the solid phase, in particular in the form of partially crystalline granulate. The aim of the invention is to achieve a high product throughput on recrystallising and recondensation of polyester material with a low initial IV. Said aim is achieved, whereby on recrystallisation, a low residence time of 1-10 minutes is achieved, by means of a rapid heating of a thin product layer, followed by an SSP treatment.
Public/Granted literature
- US20040192878A1 Method and device for the continuous polycondensation of polyester material in the solid phase Public/Granted day:2004-09-30
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