Polyurethaneurea and spandex comprising same
US6720403B1 · kind B1 · utility
2Cited by
15References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Nov 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S528/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Spandex having good whiteness retention, high heat-set efficiency, and percent set is made from comprises amide soluble polyurethaneurea polymers prepared by reacting polyether which comprises the reaction product of a polymeric glycols with ortho-substituted diisocyanates and bulky diamine chain extenders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.