Microfiber-reinforced porous polymer film and a method for manufacturing the same and composites made thereof
US5545475A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1995 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Jul 5, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249994
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A porous composite sheet is prepared from a mixture of polytetrafluoroethylene particulates and liquid crystal polymer particulates. The liquid crystal polymer in the porous composite sheet can be in the form of particulates contained within a polytetrafluoroethylene microstructure, or formed into a network of liquid crystal polymer fibers contained within and attached to the polytetrafluoroethylene microstructure. The porous composite sheet can be used as a self-reinforced porous sheet, for example, as a filter media. The pores of the composite sheet can be at least partially filled with polymeric resins and the composite sheet laminated to form useful electronic assemblies such as printed circuit boards and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.