Spandex fiber with copolymer soft segment
US5000899A · kind A · utility
36Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1988 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | May 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2967
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A elastic fibers are formed from spandex polymer that is prepared by reacting a glycol prepared from a tetrahydrofuran/3-methyltetrahydrofuran copolymer with a diisocyanate and then chain extending the thusly capped glycol with a particular mixture of diamines. The fibers have a highly desirable combination of power, hot-wet creep and heat-set efficiency and can be prepared at high spinning and windup speeds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.