Invention Grant
- Patent Title: Aliphatic-aromatic polyester having elevated whiteness index
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Application No.: US16617640Application Date: 2018-05-22
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Publication No.: US11560450B2Publication Date: 2023-01-24
- Inventor: Klaus Scheuermann , Robert Loos , Andreas Garbe , Kevin Müller
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen am Rhein
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen am Rhein
- Agency: Faegre Drinker Biddle & Reath LLP
- Priority: EP17173697 20170531
- International Application: PCT/EP2018/063309 WO 20180522
- International Announcement: WO2018/219708 WO 20181206
- Main IPC: C08G63/183
- IPC: C08G63/183 ; C08K5/29 ; D01F6/84 ; D01F6/92
Abstract:
The present invention relates to an aliphatic-aromatic polyester having a whiteness index according to ASTM E 313-73 of at least 25, to a process for preparation thereof and to the use of the aliphatic-aromatic polyester for production of polyester fibers (PF). The present invention further relates to the polyester fibers (PF) comprising the aliphatic-aromatic polyester.
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