Five-layered container
US5068136A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1989 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Nov 15, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31736
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A five-layered container formed by biaxial orientation blow molding of an injection-molded, five layered-structured parison, wherein central, innermost and outermost layers comprise a resin A, two intermediate layers between the innermost layer and the central layer and between the outermost layer and the central layer comprise a resin B, the resin A comprises a polyester resin containing ethylene terephthalate as a main recurring unit, and the resin B comprises a mixture of a polyester resin containing ethylene terephthalate as a main recurring unit with polyarylate or a resin produced by an ester-exchange reaction of said polyester resin with polyarylate, and a m-xylene group-containing polyamide resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.