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Polyurethane spandex and its manufacturing method, cottons and silks and swimwear

A polyurethane elastic and manufacturing method technology, applied in the field of polyurethane elastic fiber, can solve the problems of fiber unevenness, thermal residual deformation, difficult-to-filament textile processing fiber cloth, etc.

Inactive Publication Date: 2003-02-12
OPELONTEX CO LTD 50
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Polyether-based polyurethane elastic fibers lack thermal residual deformation characteristics. Therefore, various fiber cloths and silks containing polyurethane elastic fibers have the problem of thermal residual deformation.
[0008] That is, since polyurethane elastic fibers have very low thermal residual deformation efficiency, filaments made of polyurethane elastic fibers require a long time and high temperature for thermal residual deformation.
In fiber cloth containing nylon fiber and polyurethane elastic fiber, when the thermal residual deformation temperature is high, there is a problem of causing unevenness of the fiber
The breaking strength of this kind of silk is small, and it is difficult to process the silk into fiber cloth. When wearing clothing products made of this kind of silk, the clothing products are worried about damage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Tetramethylene ether diol and MDI with a molecular weight of 1800 are packed into a container so that the CR value is 1.58, react at 90° C., and dissolve the obtained reactant in N,N-dimethylacetamide (DMAc), Next, a DMAc solution containing ethylenediamine and diethylamine was added to the solution in which the above-mentioned reactant was dissolved to obtain a polyurethaneurea solution (solution A1) having a solid content in the polymer of 35% by weight.

[0112] In addition, tetramethylene ether diol and MDI with a molecular weight of 2900 were put into a container to make the CR value 3.5, and reacted at 90°C, then dissolved in DMAc, and then added ethyl alcohol to the solution in which the above reactant was dissolved. A DMAc solution of diol and butanol was used to obtain a polyurethane solution (solution B1) having a solid content in the polymer of 35% by weight.

[0113] Next, 450 g of solution B1 was added to 1800 g of solution A1, and stirred for 2 hours to ob...

Embodiment 2

[0116] 970 g of solution B1 was added to 1800 g of solution A1, and stirred for 2 hours to prepare solution C2. Next, zinc oxide (fine zinc oxide, manufactured by Honso Chemical Co., Ltd.) was added to the solution C2 so that the polyurethane elastic fiber contained 3% by weight of zinc oxide, and stirred for 2 hours to prepare a solution D2. The speed ratio of the guide roller and the winder was set to 1.20, and the solution D2 was dry-spun at a speed of 540 m / min, and the polyurethane elastic fiber (44 dtex, 4 filaments) was wound.

[0117] There is no trouble such as yarn breakage during spinning, and stable spinning is possible. The obtained polyurethane elastic fiber contains 34% by weight of polyurethane, has very good resistance to chlorine embrittlement, and has excellent thermal residual deformation. The results are shown in Table 1 together.

Embodiment 3

[0119] Put tetramethylene ether diol and MDI with a molecular weight of 2100 into a container, make the CR value 2.1, react at 90°C, then dissolve in DMAc, and then add DMAc containing ethylene glycol and butanol to the above solution solution to obtain a polyurethane solution (solution B2) having a solid content in the polymer of 35% by weight.

[0120] Next, 1200 g of solution B2 was added to 1800 g of solution A1, and stirred for 2 hours to obtain solution C3. Next, zinc oxide (fine zinc oxide, manufactured by Honso Chemical Co., Ltd.) was added to the solution C3 so that the polyurethane elastic fiber contained 3% by weight of zinc oxide, and stirred for 2 hours to prepare a solution D3. The speed ratio of the guide roller and the winder was set at 1.20, and the solution D3 was dry-spun at a speed of 540 m / min, and polyurethane elastic fibers (44 dtex, 4 filaments) were wound.

[0121] There is no trouble such as yarn breakage during spinning, and stable spinning is possi...

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PUM

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Abstract

The present invention is related to polyurethane elastic fiber which is characterized by consisting from polyurethane urea and polyurethane and preparation thereof. The polyurethane elastic fiber of present invention can be used for the usage of swimming suit by way of such excellent anti-chlorine brittle function and thermoset property.

Description

technical field [0001] The present invention relates to polyurethane elastic fiber, its production method, cloth and swimwear. [0002] More specifically, it relates to a polyurethane elastic fiber excellent in chlorine resistance suitable for swimwear used in swimming pools and the like. technical background [0003] Polyurethane elastic fiber has a high degree of rubber elasticity and is widely used in stockings, underwear, sportswear, etc. due to its excellent mechanical properties such as tensile stress and recovery, and thermal properties. [0004] However, when clothing products using polyurethane elastic fibers are soaked in chlorine bleach for a long time and washed repeatedly, there is a problem that the elastic function of polyurethane elastic fibers decreases. [0005] That is, when swimwear using polyurethane elastic fibers is repeatedly soaked in sterilizing chlorine water with an active chlorine concentration of 0.5-3 ppm such as an aqueous pool, the elastic f...

Claims

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Application Information

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IPC IPC(8): D01F6/70C08G18/00D01F6/94D01F8/16
CPCD01F1/10
Inventor 植村裕司西河裕梅泽正夫
Owner OPELONTEX CO LTD 50
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