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Chlorine resistant polyurethaneurea composition

A polyurethane urea and elastic fiber technology, applied in the direction of single-component polyurethane rayon, single-component synthetic polymer rayon, spinning solution preparation, etc., can solve the problem of increased filtration pressure and fiber breakage rate, poor dispersion, and product Yellowing and other problems, to achieve the effect of inhibiting fiber coloring or decolorization, preventing moisture absorption, and reducing secondary aggregation

Active Publication Date: 2011-04-13
TAEKWANG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But according to the patent, the chlorine-resistant material is not coated, so there is a problem of polymer gel formation due to the material's hygroscopicity and poor dispersibility, increasing filter pressure and fiber breakage, and yellowing of the final product

Method used

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  • Chlorine resistant polyurethaneurea composition
  • Chlorine resistant polyurethaneurea composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Polytetramethylene ether glycol (PTMEG, molecular weight 1815) and diphenylmethane-4,4'-diisocyanate (MDI) were added and polymerized at a molar ratio of 1.70 (NCO / OH=1.70) to prepare terminal untreated The reacted diisocyanate does not exceed 3.0 mole percent of the primary polymer. The primary polymer was homogeneously dissolved in N,N-dimethylacetamide (DMAc) in a high-performance dissolver to obtain a primary polymer mixture in which the content of unreacted diisocyanate had been constantly adjusted to 2.64 ± 0.02 mol%. Ethylenediamine and 1,2-diaminopropane as chain extenders and diethylamine as chain terminator were dissolved in DMAc, and this mixture was fed to the secondary polymerizer along with the primary polymer mixture. Through the conventional polymerization process of polyurethane urea elastic fiber, the solid content of the polymer is about 35wt%, and the apparent viscosity at 40°C is about 2000-3500 poise. The intrinsic viscosity measured in N,N-dimet...

Embodiment 2

[0071] Elastic fibers were prepared according to the same method as described in Example 1, except that hydromagnesite (Airlite-S3, obtained from Nanotech Ceramics) with an average particle size of not more than 10 μm coated with stearic acid by a wet method was used As a chlorine resistant material.

Embodiment 3

[0073] Elastic fibers were prepared according to the same method described in Example 1, except that uncoated hydromagnesite (Airlite-S3, available from Nanotech Ceramics) with an average particle size of not more than 10 μm was used as the chlorine-resistant material.

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Abstract

The present invention relates to a composition for preparing polyurethaneurea elastic fiber having excellent chlorine resistant property and uniformity, high durability against chlorine -containing water of a swimming pool and excellent quality as a cloth material after mixture -knitting with nylon, and a chlorine resistant polyurethaneurea elastic fiber prepared by using the same. More specifically, the present invention relates to a composition for preparing polyurethaneurea elastic fiber which is characterized in that it comprises 0.1-10% by weight of basic magnesium carbonate coated with 1-10% by weight of one or more substance (s) selected from C1-C30 fatty acids, fatty acid metal salts, fatty acid esters, fatty acid phosphoric esters, silica, silane, polyorganosiloxanes, and polyorganosiloxane / polyorganohydrogensiloxane mixtures via dry or wet process, and polyurethaneurea elastic fiber using the same.

Description

technical field [0001] The present invention relates to a composition for preparing polyurethane urea elastic fibers having excellent chlorine resistance and uniformity, and chlorine-resistant polyurethane urea elastic fibers prepared using the composition, the fibers being resistant to chlorine-containing water in swimming pools Highly resistant and blended with nylon to provide a fabric of exceptional quality. Background technique [0002] Polyurethaneurea elastic fibers prepared by dry-spinning and melt-spinning polymers obtained by chain-extending prepolymers with isocyanate end groups, synthesized from high molecular weight polyols and excess organic diisocyanates and diamines; and found As an elastic functional material, it is used in various garments such as women's corsets, socks, hosiery and swimsuits by blending with polyamide fibers, polyester fibers or natural fibers. [0003] The physical properties of the polyurethaneurea elastic fiber are degraded due to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K9/04D01F6/70
CPCD01D1/02D01F6/70D01D5/04D01F1/10D01F6/94
Inventor 崔玉铉辛益基郑仁洛丁尚钰金完郁李永炅
Owner TAEKWANG IND CO LTD