Biaxially oriented polyester film
US5096773A · kind A · utility
23Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Jun 1, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A biaxially oriented polyester film containing 0.05 to 3 wt % of agglomerates of primary particles of aluminum oxide having an average particle size of 5 to 40 nm, the agglomerates having an average particle size of 50 to 400 nm. The film of the present invention is excellent in the wear resistance against various members such as a metal pin, and suitable for various industrial purposes including a base film of a magnetic recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.