Separation membrane coating agent composition, separation membrane made from coating agent composition, and battery using same
US10050247B2 · kind B2 · utility
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1References
15Claims
0Family size
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Key dates
| Filing date | Jul 31, 2013 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Aug 6, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is a coating composition having excellent thermal resistance and drying processability, utilizing polyamic acid having high thermal resistance and excellent solubility in a low boiling point solvent. Specifically, the coating composition includes polyamic acid and a low boiling point solvent having a boiling point less than 150° C. Also, disclosed herein a separator having improved thermal resistance by coating the coating composition on one or both surfaces of a polyolefin-based substrate film, and an electrochemical battery having improved thermal stability by using the separator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.