| 发明名称 |
Spandex compositions for high speed spinning |
| 摘要 |
A spandex comprising a polyurethane or polyurethaneurea reaction product of at least one diisocyanate compound and a poly(tetramethylene-co-ethyleneether) glycol comprising constituent units derived by copolymerizing tetrahydrofuran and ethylene oxide wherein the percentage of ethylene ether moieties is from about 16 to about 70 mole percent with at least one chain extender selected from the group consisting of diamines and diols and at least one chain terminator wherein the spandex is spun at a speed in excess of about 750 meters per minute. |
| 申请公布号 |
US8765901(B2) |
申请公布日期 |
2014.07.01 |
| 申请号 |
US200611429897 |
申请日期 |
2006.05.08 |
| 申请人 |
Invista North America S.ár.l. |
发明人 |
Palmer, Jr. Charles F.;Lodoen Gary A. |
| 分类号 |
C08G18/48;C08G18/10;C08G18/32;C08G18/76 |
主分类号 |
C08G18/48 |
| 代理机构 |
|
代理人 |
Geerlof Christina W. |
| 主权项 |
1. Spandex comprising a polyurethane reaction product of:
(a) a poly(tetramethylene-co-ethyleneether) glycol consisting of constituent units derived by copolymerizing tetrahydrofuran and ethylene oxide wherein the portion of units derived from ethylene oxide is present in the poly(tetramethylene-co-ethyleneether) glycol from about 50 to about 70 mole percent; (b) at least one diisocyanate; and (c) at least one diamine chain extender; wherein the spandex is spun at a speed in excess of about 750 meters per minute. |
| 地址 |
Wilmington DE US |
