Low shrinkage, dyeable MPD-I yarn
US9080260B2 · kind B2 · utility
0Cited by
23References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2011 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jun 29, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2967
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates a heat-treated poly(metaphenylene isophthalamide) polymer fiber having a crystalline structure as represented by a carbonyl stretch peak at a wavelength of 1,650 cm−1 in a Raman spectra response which before coloration with a dye, shrinks linearly 0.4 percent or less when exposed to 285 degrees Centigrade for 30 minutes; and which after contact with an aqueous red dye solution for 1 hour at 120 degrees Centigrade, has an “L” value coloration of at least 40 units lower than the “L” value of the fiber before coloration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.