Process to prepare a cyclic oligomer and a cyclic oligomer obtainable thereby
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 8, 2017
Grant Date -
Jan 21, 2016
app pub date -
Nov 27, 2013
filing date -
Mar 15, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process to prepare a cyclic polyester oligomer composition having a cyclic polyester oligomer having furanic units, includes the step of reacting a monomer component, for example, 2,5-furan dicarboxylic acid and, for example, ethylene glycol, in a ring closing oligomerization at a reaction temperature and reaction time, for example, at 100° C. to 350° C. for 30 to 600 minutes to obtain a cyclic polyester oligomer having furanic units. The process yields a cyclic polyester oligomer composition which can be used in further ring-opening polymerization reactions to produce a polyester polymer. The cyclic polyester oligomer composition has a cyclic polyester oligomer having furanic units and less than 5% linear oligomeric polyester species in the composition.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully