Polyester and method for preparing such a polyester
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United States of America Patent
Stats
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Mar 6, 2018
Issued Date -
N/A
app pub date -
Mar 11, 2015
filing date -
Mar 11, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A polyester, including ethylene 2,5-furandicarboxylateunits, also includes diethylene glycol residues, the content of which is less than 0.045, in moles per mole of 2,5-furandicarboxylate moieties. The polyester composition can be prepared with a method where a starting mixture is subjected to esterification of 2,5-furandicarboxylic acid or transesterification of an ester thereof with ethylene glycol in the presence of a basic compound and/or an ammonium compound capable of suppressing the formation of diethylene glycol.
First Claim
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International Classification(s)
- 2015 Application Filing Year
- C08G Class
- 2777 Applications Filed
- 2224 Patents Issued To-Date
- 80.09 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C08G Class
- 39.35 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 6, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 6, 2029 |
