Polyester resin compositions for film
US6506818B1 · kind B1 · utility
5Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The polyester composition for films includes, based on 100 parts by weight of a polyester resin, 0.01 to 5 parts by weight of aluminum silicate particles containing aluminum and silica as principal components and an alkali metal. To provide polyester films suitable for magnetic recording media, the polymer composition contains surface- modified aluminum silicate particles and two additional particles distinct in particle diameter. The polyester films thus obtained have excellent abrasion resistance and scratch resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.