Spandex from high molecular weight poly (tetramethylene-co-ethyleneether) glycols

一种四亚甲基、亚乙基醚的技术，应用在纤维化学特征、单组分聚脲人造长丝、单组分聚氨酯人造长丝等方向，能够解决没有公开使用等问题

Inactive Publication Date: 2015-03-04
INVISTA TECHNOLOG IES S A R L
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Axelrood does not disclose the use of these urethane ureas in spandex

Method used

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  • Spandex from high molecular weight poly (tetramethylene-co-ethyleneether) glycols
  • Spandex from high molecular weight poly (tetramethylene-co-ethyleneether) glycols
  • Spandex from high molecular weight poly (tetramethylene-co-ethyleneether) glycols

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-15

[0080] Embodiment 1-15 (elastic fiber containing ethylene ether of high molecular weight)

[0081] Random poly(tetramethylene-co-ethylene ether) glycols having mole percent ethylene ether units and number average molecular weights as shown in Tables 1-4, at 90° C. with 1-iso Cyanato-4-[(4-isocyanatophenyl)methyl]benzene was capped for 120 minutes using 100 ppm of mineral acid as catalyst to obtain diisocyanate-diol molar ratio (capping ratio) of the prepolymer. This capped diol was then diluted with DMAc solvent, chain elongated with EDA, and chain terminated with diethylamine to give a spandex polymer solution. The amount of DMAc used was such that the final spinning solution had 30-38 wt% polyurethaneurea therein, based on total solution weight, unless otherwise stated. The spinning solution was dry spun into a column with dry nitrogen, condensed, passed around godet rolls, and wound at the speeds listed. The spinning chamber temperature and suction gas flow were adjusted...

Embodiment 16

[0101] Random poly(tetramethylene-co-ethylene ether) glycol, it has the ethylene ether unit of 49mol% and the number average molecular weight of 2045, is combined with 1-isocyanato-4- at 90 ℃ [(4-Isocyanatophenyl)methyl]benzene was capped for 120 minutes using 100 ppm of mineral acid as catalyst. The molar ratio of diisocyanate to diol was 1.64. This capped diol was then diluted with DMAc solvent, chain elongated with EDA, and chain terminated with diethylamine to give a spandex polymer solution. The amount of DMAc used was such that the final spinning solution had 38 wt% polyurethaneurea therein, based on total solution weight. The spinning solution was dry spun into a column with dry nitrogen at 440°C, condensed, passed around a godet roll, and wound at 869 m / min. The filaments provide good spinnability. The spandex has a tenacity of 0.62 g / denier and an elongation of 580%.

Embodiment 17-21

[0120] Atactic poly(tetramethylene-co-ethylene ether) glycol, which has 49 mol% of ethylene ether units and a number average molecular weight of 2443, was prepared with 1-isocyanato-4- [(4-Isocyanatophenyl)methyl]benzene was capped for 120 minutes using 100 ppm of a homogeneous mineral acid as a catalyst to give a 3.5% NCO prepolymer. The molar ratio of diisocyanate to diol was 2.26. This capped diol was then diluted with DMAc solvent for chain extension using BDO (1,4-butanediol) to give a spandex polymer solution. It is also possible and common practice in spandex technology to add chain terminators to the formulation to control molecular weight and other properties. Chain terminators are not equally necessary for polyurethane formulations, where polyurethanes tend to be more soluble and have less propensity for hard segments relative to increasing the apparent molecular weight of the polymer. This above general procedure was adapted and used to form Examples 18, 19, 20 an...

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Abstract

The invention provides polyurethaneurea compositions comprising poly(tetramethylene-co-ethyleneether) glycol having high number average molecular weight, from about 1900 to about 4000 Dalton. The invention further relates to the use of high number average molecular weight poly(tetramethylene-co-ethyleneether) glycol as the soft segment base material in spandex compositions. The invention also relates to new polyurethane compositions comprising poly(tetramethylene-co-ethyleneether) glycols with such high number average molecular weight, from about 1900 to about 4000 Dalton, and their use in spandex.

Description

[0001] This case is a divisional application, and its parent case is that the application date is May 8, 2006, the application number is 200680043755.3, and the invention name is "obtained from high molecular weight poly(tetramethylene-copoly-ethylene ether) glycol Elastic fiber" application. technical field [0002] The present invention relates to novel polyurethaneurea compositions comprising poly(tetramethylene-co-ethyleneether) glycol comprising constituent units derived from the copolymerization of tetrahydrofuran and ethylene oxide, which are present in poly( The portion of said units derived from ethylene oxide in tetramethylene-co-ethylene ether) glycol is greater than about 37 to about 70 mole percent and has a number average molecular weight of about 1900 Daltons to about 4000 Da Leon. The present invention also relates to the use of poly(tetramethylene-co-ethylene ether) glycols having such high number average molecular weights as soft segment base materials in sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/32C08G18/10D01F6/78D01D5/04D03D15/56
CPCC08G18/4854D01F6/70C08G18/2865D01F6/78D01D5/04C08G18/10C08G18/3206C08G18/3228C08G18/48C08L75/04D01F6/72C08G18/4837C08G18/2805C08G18/3203C08G18/3231C08G18/3234C08G18/324C08G18/667C08G18/6674C08G18/6681
Inventor J.M.兰伯特C.F.小帕尔默
Owner INVISTA TECHNOLOG IES S A R L
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