Flame retardant processing method, and cellulosic fiber material imparted with flame retardancy

A processing method, cellulose technology, applied in the direction of flame-retardant fiber, fiber treatment, plant fiber, etc., can solve the problems of not being able to fully impart flame retardancy, not being able to speculate, not being able to be used for cellulosic fiber processing, etc.

Inactive Publication Date: 2010-12-29
KURASHIKI BOSEKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Flame retardants that have been marketed so far are mainly used for polyester fibers, and cannot be used in the processing of cellulose-based fibers such as natural fibers such as cotton and hemp, or regenerated fibers such as rayon.
In addition, conventional flame retardants have problems such as not being able to impart sufficient flame retardancy or having a high concentration of free formaldehyde, so it cannot be expected that they can be used in clothing that requires sufficient flame retardancy or safety to the skin.

Method used

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  • Flame retardant processing method, and cellulosic fiber material imparted with flame retardancy
  • Flame retardant processing method, and cellulosic fiber material imparted with flame retardancy
  • Flame retardant processing method, and cellulosic fiber material imparted with flame retardancy

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no. 1 approach

[0040] In the first embodiment of the present invention, the above-described procedure (1) is employed.

[0041] (ray processing step)

[0042] In this embodiment, first, the fiber raw material is irradiated with radiation. Thus, in the phosphorus treatment step described later, the radically polymerizable phosphorus-containing compound can be chemically bonded to the fiber raw material through an addition reaction using the radically polymerizable group. That is, radicals are generated in the cellulose fibers by radiation treatment, and the radical polymerizable groups of the phosphorus-containing compound are chemically bonded to the cellulose fibers in the phosphorus treatment step by utilizing the generated radicals. It is speculated that free radicals generated in cellulose-based fibers are likely to be generated at the 5-position carbon in the structural unit of the cellulose molecule, followed by the 4-position or 1-position carbon, and then at the 2-, 3-, and 6-positi...

no. 2 approach

[0099] In the second embodiment of the present invention, the above-mentioned procedure (2) is adopted. Hereinafter, each step of the second embodiment will be described, and unless otherwise specified, each step is the same as that of the first embodiment except that the execution order of each step is different.

[0100] (Amine treatment step)

[0101] In this embodiment, first, an amine compound is provided to the fiber raw material. The amine compound imparted in this step can rapidly react with the phosphorus-containing compound moiety bonded to the cellulose fiber by pre-existing on the surface of the cellulose fiber in the subsequent radiation treatment step and phosphorus treatment step.

[0102] In this step, after the amine treatment, aging treatment is preferably performed by the same method as the aging treatment in the phosphorus treatment step of the first embodiment, but the water washing treatment is preferably not performed. This is because the amine compoun...

no. 3 approach

[0110] In the third embodiment of the present invention, the above-mentioned procedure (3) is adopted. Hereinafter, each step of the third embodiment will be described, but unless otherwise specified, each step is the same as that of the first embodiment except that the order of implementation of each step is different.

[0111] (ray processing step)

[0112] In this embodiment, first, the fiber raw material is irradiated with radiation. Thereby, free radicals can be generated in the cellulose-based fibers, and the phosphorus-containing compound can be chemically bonded to the cellulose-based fibers through an addition reaction by radical polymerizable groups in the same-bath treatment step described later.

[0113] (same bath treatment step)

[0114] Next, the phosphorus-containing compound and the amine compound are simultaneously provided to the cellulose-based fiber raw material. That is, the phosphorus treatment of bonding the phosphorus-containing compound to the cell...

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Abstract

Disclosed is a flame retardant processing method characterized by comprising the following steps: a radiation processing step of irradiating a cellulosic fiber material with a radioactive ray; a phosphorus treatment step of adding a radical-polymerizable phosphorus-containing compound to the cellulosic fiber material; and an amine treatment step of adding an amine compound to the cellulosic fiber material. Also disclosed is a cellulosic fiber material imparted with flame retardancy, which is produced by the method.

Description

technical field [0001] The present invention relates to a flame-retardant processing method and a cellulose-based fiber raw material processed by the method. Background technique [0002] The flame retardants that have been marketed so far are mainly used for polyester fibers, and cannot be used in the processing of cellulose-based fibers such as natural fibers such as cotton and hemp, or regenerated fibers such as rayon. In addition, conventional flame retardants have problems such as insufficient flame retardancy or high free formaldehyde concentration, and cannot be expected to be used in clothing requiring sufficient flame retardancy or safety to the skin. [0003] As a flame-retardant processing method, a method of irradiating a fiber material before and / or after imparting a flame retardant has been reported (Patent Documents 1 to 4). As the flame retardant, vinyl phosphonate oligomers, vinyl phosphonate, phosphite compounds, vinyl phosphate compounds, and the like are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/22C09K21/10C09K21/12C09K21/14D06M10/00D06M10/08D06M11/58D06M13/282D06M13/313D06M13/325D06M15/61D06M101/06
CPCC09K21/14D06M15/61D06M14/22D06M11/60D06M2200/30D06M10/008D06M15/3564D06M13/325D06M13/46D06M2101/06
Inventor 杉山稔小泽一郎井上广章友谷靖胜圆进大岛邦裕
Owner KURASHIKI BOSEKI KK
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