Polyurethane elastic fiber
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 9, 2017
Grant Date -
Jan 2, 2014
app pub date -
Mar 13, 2012
filing date -
Mar 14, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided are novel polyurethane elastic fibers having a high recovery stress, low hysteresis loss, and high heat resistance. The polyurethane elastic fibers of the present invention are polyurethane elastic fibers formed from a polyurethaneurea obtained from a copolyalkylene ether diol produced from different C2-10 alkylene ethers; a diisocyanate; and a diamine, the polyurethane elastic fibers being characterized in that the polyurethaneurea has a hard segment percentage of 14.0% to 25.0% as defined by formula (1): hard segment percentage (%)=(urea moiety number-average molecular weight)/{(urea moiety number-average molecular weight)+(moiety segment number-average molecular weight)}×100 (formula (1)).
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- D01D Class
- 164 Applications Filed
- 142 Patents Issued To-Date
- 86.59 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D01D Class
- 0 % this patent is cited more than
- 8 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 | Nov 9, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 9, 2028 |
