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Spandex fiber with excellent chlorine resistance and its manufacturing method

A technology of spandex fiber and manufacturing method, which is applied in the direction of rayon manufacturing, fiber chemical characteristics, single-component polyurethane rayon, etc., can solve the problems such as the chlorine resistance of spandex fiber that has not been found, and achieve excellent discoloration resistance and chlorine resistance sexual effect

Active Publication Date: 2014-10-22
HYOSUNG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But, so far, have not found the additive that can significantly improve the chlorine resistance of spandex fiber, therefore also need to further improve

Method used

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  • Spandex fiber with excellent chlorine resistance and its manufacturing method

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Effect test

Embodiment 1

[0052] In a nitrogen stream, 518g of diphenylmethane-4,4'-diisocyanate and 2328g of polytetramethylene ether glycol (molecular weight: 1800) were reacted at 90°C for 95 minutes while stirring to obtain two Isocyanate-terminated polyurethane prepolymers. After cooling the prepolymer to room temperature, 4269 g of dimethylacetamide was added to dissolve it, thereby preparing a polyurethane prepolymer solution.

[0053] In the next step, 43 g of ethylenediamine and 9.1 g of diethylamine were dissolved in 1,889 g of dimethylacetamide, and added to the above prepolymer solution at a temperature below 9° C. to prepare a polyurethane solution. The following ingredients are added as additives for mixing: 1% by weight of poly(N,N-diethyl-2-aminoethyl acrylate methyl ester) as a color fastness enhancer relative to the solid content of the polymer; 0.1% 0.26% by weight of magnesium stearate as an unwinding improver; and 4% of hydrotalcite Mg as a chlorine resistant agent 4 Al 2 (OH) ...

Embodiment 2

[0059] Use 3,3',3",5,5',5"-hexa-tetra-butyl-a,a',a"-(mesitylbenzene-2,4 , 6-triyl) three-p-cresol, except above-mentioned this point, other all utilize the polymkeric substance identical with embodiment 1 to manufacture spandex fiber, and detect chlorine resistance, record the result in following table 1 .

Embodiment 3

[0061] Tetrakis[methylene-2-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]methane was used as a symmetrical double hindered phenolic compound, and 4% by weight of Uncoated hydrotalcite Mg 4 Al 2 (OH) 12 CO 3 ·3H 2 O, except for the above point, others all utilize the same polymer as in Example 1 to produce spandex fibers, and detect chlorine resistance, and record the results in the following Table 1.

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Abstract

The present invention relates to a spandex fiber containing an inorganic chlorine-resistant agent, such as a hydrotalcite compound, a mixture mineral of huntite and hydromagnesite, hydromagnesite, zinc oxide, or magnesium oxide, and a symmetrically di-hindered hydroxyphenyl-based additive, which improves the chlorine resistance of the spandex fiber, and a production method thereof. The spandex fiber has excellent chlorine resistance, and thus can be more effectively used for sports or leisure wear such as swimwear.

Description

technical field [0001] The present invention relates to a spandex fiber with excellent chlorine resistance and its manufacturing method, more specifically, it relates to the following spandex fiber and its manufacturing method: it contains symmetrical double hindered phenolic additives and inorganic chlorine resistant agent, thereby While maintaining the physical properties of the original polyurethane polymer, it also improves its chlorine resistance. Background technique [0002] Spandex is a representative polyurethane elastic fiber, which can maintain a high degree of elasticity and has excellent physical properties such as tensile stress and recovery force, so it can be widely used in underwear, socks, sports and leisure clothing, etc., but as spandex The physical properties of polyurethane, the main component, will be greatly reduced during chlorine bleaching. Therefore, if you wear a swimsuit made of spandex and nylon in a swimming pool with an active chlorine content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/70D01F1/10
CPCD01F6/70D01F1/10
Inventor 郑贤基洪智慧姜渊秀
Owner HYOSUNG CORP
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