Method of dyeing a substrate comprising elastomeric fibre and non-elastomeric fibre, and a dyed subtrate comprising these fibres
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United States of America Patent
Stats
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Dec 29, 2020
Grant Date -
Aug 20, 2020
app pub date -
Feb 18, 2016
filing date -
Feb 18, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A dyeing method comprising a) dyeing a substrate containing (i) elastomeric fiber containing at least 30 wt. % of a first polymer having a glass transition temperature T1 of less than 60° C. and (ii) non-elastomeric companion fiber containing more than 50 wt. % of a second polymer, said second polymer being polymer having no glass transition temperature or polymer having a glass transition temperature T2 that is at least 20° C. higher than T1, b) contacting the pre-dyed substrate with an extraction medium at a temperature Te and a pressure Pe, said extraction medium comprising at least 50 wt. % of supercritical or liquefied carbon dioxide; wherein Te exceeds Tg1,extraction and wherein Te is less than Tg2,extraction in case the companion 1 fiber contains more than 50 wt. % of polymers having a glass transition temperature T2; Tg1,extraction representing the glass transition temperature of the first polymer in carbon dioxide at pressure Pe; and Tg2,extraction representing the glass transition temperature of the second polymer in carbon dioxide at pressure Pe.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| EP | A1 | EP3417100 | Feb 18, 2016 |
| CN | B | CN108884632 | Feb 18, 2016 |
| WO | A1 | WO2017142395 | Feb 18, 2016 |
| TW | B | TWI706065 | Feb 15, 2017 |
International Classification(s)
- 2016 Application Filing Year
- D06P Class
- 114 Applications Filed
- 74 Patents Issued To-Date
- 64.92 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D06P Class
- 0 % this patent is cited more than
- 5 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 | Jun 29, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 29, 2032 |
