Polyurethane elastomeric fiber and process for making the fiber

An elastomer fiber, polyurethane technology, applied in the direction of one-component polyurethane rayon, transportation and packaging, thin material processing, etc., can solve the problems of high viscosity, low unloading force, poor fabric performance, etc.

Inactive Publication Date: 2006-08-16
LUBRIZOL ADVANCED MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These diisocyanates result in spandex with poor processing qualities such as high tack, poor fabric properties such as low unloading power, poor fabric processability in areas such as dyeing, finishing, and washing

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0015] The present invention relates to polyurethane elastomeric fibers obtainable from the bulk melt spinning polymerization of polyurethane and isocyanate-terminated polyether or polyester additives. The polyurethanes are derived from diisocyanates and diol chain extenders reacted with hydroxyl terminated polyethers.

[0016] Specifically, in one aspect of the present invention, a thermoplastic polyurethane elastomer obtained by bulk melt polymerization of the following materials is provided:

[0017] A. A polyurethane derived from a diisocyanate and a diol chain extender reacted with a hydroxyl-terminated polyether intermediate, wherein the amount of chain extender is from 0.7 to less than 1.0 moles per mole of the hydroxyl-terminated intermediate; and

[0018] B. An isocyanate-terminated polyether additive, wherein the additive is capable of crosslinking the polyurethane described in (A).

[0019] In another aspect of the present invention, there is provided a process for...

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Abstract

This invention is comprised of a thermoplastic polyurethane elastomer fiber obtained by melt spinning a polyurethane having a rebound of 60% or greater and a isocyanate-terminated polyether or polyester additive. The elastic fibers have low shrinkage, high heat resistance, low tensile set, and high elongation.

Description

[0001] The present invention is a divisional application of a Chinese patent application with the application number 02805408.3, the filing date being February 5, 2002, and the invention title being "polyurethane elastomer fiber and method for preparing the fiber". Background of the invention [0002] The present invention relates to polyurethane elastomer fibers obtained by melt-spinning polyurethane and isocyanate-terminated polyether or polyester having a resilience of 60% or more to obtain fibers having low shrinkage, high heat resistance, low elongation Elastic fiber with deformation and high elongation. Polyurethanes with improved elastomeric properties have many practical applications such as fabrics in consumer goods such as socks and garments, medical applications, recreational applications, automotive applications, or industrial applications such as conveyor belts, cable sheathing, etc. [0003] A common elastic fiber used in the apparel industry is spandex. It is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/70C08L75/04C08L75/08C08F2/00C08G18/08C08G18/10C08G18/48
CPCC08G18/4854Y10T428/2913C08L75/08C08G18/0895D01F6/70C08G18/10C08L2666/20C08L75/04
Inventor R·R·维杜拉
Owner LUBRIZOL ADVANCED MATERIALS INC
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