Method for obtaining polytetramethylene ether glycols with narrow molar-mass distribution
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 27, 2001
Grant Date -
N/A
app pub date -
Aug 12, 1999
filing date -
Feb 19, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The molecular weight distribution of polytetrahydrofuran and copolymers of tetrahydrofuran with alkylene oxides is narrowed down by blending the polymers with a mixture of an alicyclic compound, methanol and water at a temperature ranging from 0-40.degree. C. The two phases formed are separated at 40-80.degree. C., and polymers with low molecular weight distributions are isolated therefrom.
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