Biaxially stretched polyester film
US5324574A · kind A · utility
3Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Apr 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel biaxially stretched polyester film having excellent transparency and slipperiness is disclosed. The biaxially stretched polyester comprises a polyester composition which exhibits a film haze of not more than 1% after it is made into a film having a thickness of 100 .mu.m and 50-500 ppm on the basis of the weight of monodispersed cross-linked high polymer particles having an average particle diameter of 0.8-1.4 .mu.m and exhibits a deformability of 1.2-5.0 in a biaxially stretched polyester film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.