Invention Grant
- Patent Title: Method for drying particulate polymers
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Application No.: US15119857Application Date: 2015-02-16
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Publication No.: US09969849B2Publication Date: 2018-05-15
- Inventor: Joerg Erbes , Gerhard Lange , Tobias Kortekamp , Bernhard Linner , Cecile Schneider , Angela Ulzhoefer , Robert Heinz , Michael Klemens Mueller
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP14155815 20140219
- International Application: PCT/EP2015/053195 WO 20150216
- International Announcement: WO2015/124521 WO 20150827
- Main IPC: C08J3/14
- IPC: C08J3/14 ; C08G75/20 ; C08G75/23 ; B29B13/06 ; F26B5/14 ; C08J3/12 ; F26B3/08

Abstract:
The present invention relates to a process for drying particulate polymers, comprising the steps of: a) providing a particulate polymer comprising from 60 wt % to 90 wt % of at least one solvent based on the total weight of particulate polymer and solvent, b) mechanically predrying the particulate polymer to a content of the at least one solvent of from 20 wt % to 50 wt % based on the total weight of particulate polymer and solvent, wherein the mechanical predrying in step b) is carried out with a roller press, and c) end-drying the particulate polymer to a content of the at least one solvent of from 0 wt % to 15 wt % based on the total weight of particulate polymer and solvent, wherein the particulate polymer is a polymer comprising repeating units of formulae I, II and/or III The present invention further relates to a process for working up particulate polymers.
Public/Granted literature
- US20170081481A1 METHOD FOR DRYING PARTICULATE POLYMERS Public/Granted day:2017-03-23
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