Ethylene terephthalate/ethylene-2,6-naphthalene-dicarboxylate copolymers for bottles
US6022603A · kind A · utility
61Cited by
6References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 5, 1998 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Oct 5, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ethylene terephthalate/ethylene-2,6-naphthalene dicarboxylate copolymer comprising 2,6-naphthalenedicarboxylic acid in an amount of 5 to 20 mol % of the total of all dicarboxylic acid components. This copolymer contains Mn, Mg and Co derived from catalysts and P derived from a phosphorus compound as a stabilizer whose amount is controlled to a specific value and is suitable for use as a raw material for molding a bottle having good color (achromatic) and transparency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.