Polyester film containing fine powder of crosslinked polymer
US4320207A · kind A · utility
28Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed a polyester film containing from 0.001% to 4% by weight fine particles of a crosslinked polymer having an average diameter of 0.1 to 5.mu., said fine particles being derived by pulverization from a crosslinked polymer having a specific surface area of at least 1 m.sup.2 /g and a pore volume of at least 0.1 ml/g. The films of the present invention are useful as high grade films and afford many advantages in various applications, for example, as magnetic tapes, capacitors, photography, printing plate making, releasing and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.