Polyester resin blends with high-level gas barrier properties
US6346307B1 · kind B1 · utility
33Cited by
2References
25Claims
0Family size
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Inventors
Key dates
| Filing date | Jun 1, 1999 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Jun 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Compositions comprising a polyester resin and a polyamide derived from a dicarboxylic acid with 6-22 carbon atoms and from m-xylylene diamine having high-level gas barrier properties, obtained by mixing in the melted state the polyester resin premixed with a dianhydride of a tetracarboxylic acid and the polyamide, operating under conditions such as to render the polymeric components theologically compatible each other. The compositions are suitable for preparing containers and biaxially-orientated films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.