Coating liquid, laminated porous film, and method for producing laminated porous film
US9676955B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2012 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Apr 16, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a coating liquid, a laminated porous film and a method for producing a laminated porous film. The coating liquid comprises a binder resin, a filler and a medium, wherein the filler is a mixture comprising (a) a filler having a specific surface area of not less than 7 m2/g and not more than 80 m2/g and (b) a filler having a specific surface area of not less than 3 m2/g and not more than 6 m2/g in a filler (a) to filler (b) weight ratio of from 5:95 to 40:60. The laminated porous film is a laminated porous film in which a heat-resistant layer is laminated on one or both of the surfaces of a porous film substrate, wherein the heat-resistant layer is a heat-resistant layer formed by removing the medium from the coating liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.