Invention Grant
- Patent Title: Method for producing PBI films without organic solvents
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Application No.: US16569983Application Date: 2019-09-13
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Publication No.: US11180621B2Publication Date: 2021-11-23
- Inventor: Laura A. Murdock , Fei Huang , Lihui Wang , Brian C. Benicewicz
- Applicant: University of South Carolina
- Applicant Address: US SC Columbia
- Assignee: University of South Carolina
- Current Assignee: University of South Carolina
- Current Assignee Address: US SC Columbia
- Agency: Dority & Manning, P.A.
- Main IPC: C08J5/22
- IPC: C08J5/22 ; B01D67/00
Abstract:
A novel process for making PBI films starting from gel PBI membranes polymerized and casted in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.
Public/Granted literature
- US20200087473A1 NEW METHOD FOR PRODUCING PBI FILMS WITHOUT ORGANIC SOLVENTS Public/Granted day:2020-03-19
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