发明公开
- 专利标题: GAS SCRUBBER AND RELATED PROCESSES
- 专利标题(中): 气体洗涤器及相关方法
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申请号: EP13810798.2申请日: 2013-06-21
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公开(公告)号: EP2867274A1公开(公告)日: 2015-05-06
- 发明人: HAMILTON, Clive, Alexander , NEATE, Robert, Edward
- 申请人: Invista Technologies S.à.r.l.
- 申请人地址: Zweigniederlassung St. Gallen Kreuzackerstrasse 9 9000 St. Gallen CH
- 专利权人: Invista Technologies S.à.r.l.
- 当前专利权人: Invista Technologies S.à.r.l.
- 当前专利权人地址: Zweigniederlassung St. Gallen Kreuzackerstrasse 9 9000 St. Gallen CH
- 代理机构: Carpmaels & Ransford LLP
- 优先权: US201261666455P 20120629
- 国际公布: WO2014004298 20140103
- 主分类号: C08G63/90
- IPC分类号: C08G63/90 ; C08G63/82 ; B01D53/76 ; B01D53/46 ; B01D53/02
摘要:
The invention relates to a method for producing a high molecular weight polyethylene terephthalate (PET) via a solid state polymerization system. The method comprises using an acid catalyst to effectuate the conversion of acetaldehyde present within the system to 2 -methyl- 1,3-dioxolane, which can be readily removed. The invention also relates to PET prepared via this process, which can advantageously exhibit low levels of acetaldehyde.
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