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Polyoxymethylene resin fiber and method for production thereof

A technology of polyoxymethylene resin and manufacturing method, which is applied in fiber processing, rayon manufacturing, hollow filament manufacturing, etc., can solve the problems of difficult-to-process fibers, no mention, and fast crystallization speed.

Inactive Publication Date: 2008-01-02
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the polyoxymethylene resin has a high degree of crystallization and a fast crystallization rate, so its melt spinning property or drawing processability is significantly worse than other resins, such as the above-mentioned polyester resins, polyamide resins, polyolefin resins, etc. , very difficult to process into fibers
Therefore, for the manufacture of ultrafine fibers, although in the above-mentioned Japanese Patent Publication No. 44-18369, Japanese Patent Publication No. 47-37648, Japanese Patent Publication No. 48-28005, Japanese Patent Application No. 52-88619, Japan JP-A-52-88622, JP-A-55-128038, JP-A-5-71006, etc. disclose the production of ultrafine fibers containing polyester resins, polyamide resins, polyolefin resins, etc. , but there is no mention at all for very fine fibers containing Delrin

Method used

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  • Polyoxymethylene resin fiber and method for production thereof
  • Polyoxymethylene resin fiber and method for production thereof
  • Polyoxymethylene resin fiber and method for production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1～4

[0054] The polyoxymethylene copolymers (POM-1 to POM-6) used in Examples and the polyoxymethylene copolymers (POM-7 to POM-10) used in Comparative Examples were prepared by using the above-mentioned method for preparing polyoxymethylene copolymers.

[0055] In addition, diethylene glycol formal was used for POM-5, 1,4-butanediol formal was used for POM-6, and 1,3-dioxolane was used as comonomers. ring. In addition, the ratio of oxyalkylene units (copolymerization units) to 100 mol of formaldehyde units is adjusted by the amount of comonomer used in the copolymerization, and the melt index (MI) is adjusted by the amount of methylal as a molecular weight regulator. to adjust. Melt index (MI) can be increased by increasing the amount of methylal and decreased by decreasing the amount of methylal.

[0056] The melt index (MI) of the prepared polyoxymethylene copolymer was measured at 190° C. under a load of 2160 g according to ASTM D-1238. In addition, the polymer composition (...

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Abstract

The invention provides a process for efficient production of untrafine-denier fibers which are made of polyoxymethylene resin and have various excellent characteristics. A process for the production of polyoxymethylene resin fibers which comprises conjugate-spinning both a polyoxymethylene resin which contains specific oxyalkylene units in an amount of 1.5 to 8.0mol per 100 mol of oxymethylene repeating units and has a melt index (as determined at 190 DEG C under a load of 2160g) of 1 to 120g / 10min and a thermoplastic resin selected from among alkali-decomposable resins, resins soluble in water, and resins soluble in organic solvents and subjecting the obtained conjugated fibers to treatment with an alkali, water, or an organic solvent to remove the thermoplastic resin through decomposition or dissolution and thus form polyoxymethylene resin fibers.

Description

technical field [0001] The present invention relates to a method for producing ultrafine fibers containing polyoxymethylene resin. Background technique [0002] Ultrafine fibers containing polyester resins, polyamide resins, polyolefin resins, and the like are known as resin ultrafine fibers. As its production method, it has been proposed to composite spin these resins with other resins having different solubility and decomposability to form a composite fiber having a sea-island structure, and then dissolve or decompose the components forming the sea structure to obtain components containing the island structure. The method of the ultrafine fiber (Japanese Patent Publication No. 44-18369 communique, Japanese Patent Publication No. 47-37648 communique, Japanese Patent Publication No. 48-28005 communique, Japanese Patent Application Publication No. 52-88619 communique, Japanese Patent Application Publication No. 52-88619 88622 communique, Japanese Patent Application Laid-Open...

Claims

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Application Information

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IPC IPC(8): D01F6/78D01D5/24D01D5/253
CPCD01F8/04D01F6/66
Inventor 大川秀俊
Owner POLYPLASTICS CO LTD
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