JPH0625980A - Heat insulating, deodorizing, flame retardant and antimicrobial textile product - Google Patents

Abstract

PURPOSE:To obtain a textile product capable of simultaneously applying function such as heat insulating, deodorizing, flame retardany and antimicrobial properties to a raw nuclear material such as fiber or powder for a long period and maintaining the functions for a long peiod. CONSTITUTION:The textile product is obtained by making ultra-fine hydrated alumina having <=0.1Xm particle diameter and >=100m<2>/g specific surface area measured by the BET method chemically adsorbed to the surface of powder, then making an antimicrobial element such as Ag, Cu or Zn or a mixture thereof chemically adsorbed to the surface and coating the surface of the fiber with the prepared powder material or making the ultra-fine hydrated alumina and antimicrobial element directly chemically adsorbed on the fiber surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to woven fabrics, knitted fabrics, laces,
The present invention relates to textile products such as braids, felts, and non-woven fabrics, and particularly to these textile products having high heat retention, deodorizing property, flame retardancy, and antibacterial property.

[0002]

2. Description of the Related Art Generally, the qualities required for clothing, bedding and other textile products are light (low specific gravity), the base material is pure white and easy to dye, and further tensile strength, cutting, elongation, Young's modulus, Elasticity, fatigue resistance, abrasion resistance, moisture absorption / water absorption, heat resistance,
It has excellent thermal conductivity, chargeability, light resistance, chemical resistance, etc.

In addition, recently, new functions such as curtains and floor coverings are required to have heat retaining properties, deodorizing properties, flame retardant properties, and antibacterial properties, and these properties are of course required by the industry.
It is strongly desired to satisfy the characteristics at the same time. In order to meet the above demands, the present inventors have previously disclosed in Japanese Patent Laid-Open No. 2-439.
In Japanese Patent Laid-Open No. 44-44, a far-infrared radiator in which ultrafine alumina is deposited on the surface of an inorganic or organic particle is disclosed in
In Japanese Patent Laid-Open No. 202922, a fiber obtained by treating an organic polymer with alumina and a heat-retaining fiber by a far-infrared radiator for a film is disclosed. Also, in JP-A-63-196800,
Disclosed is a sheet in which inorganic fibers are made incombustible.

In any of these, an aqueous solution of an aluminum salt and a neutralization solution thereof are used in the same system in a suspension of powder or fibers (hereinafter referred to as a prokaryotic substance) consisting of an inorganic substance or an organic substance which is an object to be treated. By reacting in the inside, ultrafine alumina hydrate having a particle size of 0.1 μm or less is deposited on the surface of the prokaryotic substance,
The basic idea is chemical adsorption.

[0005]

However, in any of the above-mentioned inventions, fine alumina hydrate is formed on the surface of the prokaryotic substance to modify the surface, so that the powder or fiber is kept warm, deodorant or deodorized. Although it is provided with flame retardancy, it does not have the antibacterial properties described above. Also since ancient times,
Ag, Cu, Zn, Hg, Sn, Pb, B, Cd, Cr
And the like are known to be elements having an antibacterial action, and it is known to impart antibacterial properties by uniformly dispersing and adsorbing these elements or oxides thereof on fibers or the like.

[0006] Therefore, by forming both a fine alumina hydrate having heat retaining property, deodorizing property and flame retardant property and the above-mentioned element having antibacterial property on a prokaryotic material such as fiber or powder, It is possible to obtain a fiber that simultaneously has the four functions of heat retention, deodorization, flame retardancy, and antibacterial properties. Therefore, conventionally, alumina hydrate having heat retaining property, deodorizing property, and flame retardancy and antibacterial element such as Ag have been prepared in different systems and filled or coated on fibers or the like.

However, even if it is possible to impart four functions of heat retention, deodorization, flame retardancy and antibacterial property to the prokaryotic substance at the same time,
If a strong bond cannot be obtained between the substance that expresses these functions and the prokaryotic substance, when the prokaryotic substance is processed into a product and then used, it is impossible to maintain the desired function. Especially when the prokaryotic material is processed into textile products, dyeing and spinning,
Due to the manufacturing process such as braiding, long-term use and washing, the function-expressing substance is released from the fiber surface. In the conventional method in which the alumina hydrate and the antibacterial element are separately prepared, and the both are filled and applied to the fiber or the like, the binding strength of the alumina hydrate and the antibacterial element is weak, and these effects and functions are prolonged. It was difficult to maintain for a period.

As described above, the present inventors have found a method for uniformly and firmly forming ultrafine alumina hydrate on the surface of the prokaryotic substance for imparting heat retaining property, deodorizing property or flame retardancy. Has been established by. However, in addition to that, when trying to form an antibacterial element on a prokaryotic substance, it was difficult to obtain a strong bond with the antibacterial element.

Therefore, an object of the present invention is to provide a prokaryotic substance such as fiber or powder with an antibacterial property in addition to a heat retaining property, a deodorizing property and a flame retardant property, and an expression substance for expressing those functions. It is to form uniformly and strongly on the prokaryotic material. At the same time, it is to provide a textile product having these four functions at the same time and capable of maintaining these four functions for a long time.

[0010]

[Problems to be Solved by the Invention] The above-mentioned problems are obtained by using, on the surface of a powder, an ultrafine alumina hydrate having a particle size of 0.1 μm or less and a specific surface area of 100 m ² / g or more by the BET method, After chemically adsorbing 3 to 50 parts by weight with respect to 100 parts by weight, Ag, Cu, Zn, Hg, Sn, and
A powder material obtained by precipitating and chemically adsorbing 0.5 to 5 parts by weight of an element selected from Pb, B, Cd and Cr or an oxide thereof or a mixture thereof in terms of element was filled or surface-coated. Resolved by heat retention, deodorization, flame retardant and antibacterial textiles. Further, the above-mentioned problem is that the particle diameter is 0.1 μm or less and the specific surface area by BET method is 100 m ^{2 on} the surface of the fiber.
/ G or more ultrafine alumina hydrate
After chemically adsorbing 3 to 50 parts by weight with respect to parts by weight, Ag, Cu, Zn, Hg, Sn, Pb, B, and
0.5 to 5 parts by weight of an element selected from Cd and Cr or one of oxides thereof or a mixture thereof is deposited,
It can also be solved by heat-retaining, deodorizing, flame-retardant and antibacterial textiles made by chemical adsorption.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on examples. 1) 5-10w of prokaryotic materials such as synthetic silica and alumina
5% to 10% by weight of AlCl so as to be 3 to 50 parts of alumina hydrate with respect to 100 parts of t% suspension (pure content).
Add ₃ and stir vigorously to reach pH 7.5 up to 5-1 wt%
When neutralized with NH ₄ OH, a whisker-like ultrafine alumina hydrate is deposited on the surface of the prokaryotic substance and chemically adsorbed.

2) AgCl and Ag are continuously introduced into the system.
A ₃ to 5 wt% aqueous solution containing an antibacterial element such as NO ₃ is added to the solution.
When 5 to 5 parts (as metal) is added and neutralized with NH ₄ OH, antibacterial substances such as Ag are uniformly chemisorbed on the surface of the alumina hydrate. 3) The neutralized suspension is washed with water 5 to 10 times by decantation or a centrifuge until NH ₄ Cl or NH ₄ NO ₃ reaches 100 ppm or less, and then filtered.

4) Next, dehydration and drying are carried out to obtain a powder material having the four functions of heat retention, deodorization, flame retardancy and antibacterial properties at the same time. 5) 1-5 parts / 100 parts of the fiber is filled in the fiber in the usual manner, or it is applied with a binder such as PVA, hydroxypropylcellulose, carboxymethylcellulose, etc., and then subjected to textile processing to retain heat, deodorize, and flame retardant. A textile product having four functions of antibacterial and antibacterial properties at the same time is obtained.

When fibers are used as the prokaryotic substance,
That is, when the fiber is directly treated, the fiber is used in place of the synthetic silica or alumina of the above 1), and 2) and 3) are dehydrated and dried in the same manner as 4) and then subjected to a textile process to retain heat. A textile product having four functions of deodorant, flame retardant and antibacterial property at the same time is obtained. According to the above method, in the first step, on the surface of the prokaryotic material such as silica or alumina particles, or fibers,
Particle size is 0.1μm or less, specific surface area by BET method is 1
Ultrafine whisker-like alumina hydrate needle-like crystals of 00 m ² / g or more were precipitated and strongly chemisorbed, and then in the second step, the ultrafine alumina hydrate whisker-like needles were formed. By further depositing an antibacterial element such as Ag, Cu, or Zn or its oxide on the crystal and firmly bonding it by chemisorption, there are four functions of heat retention, deodorization, flame retardancy and antibacterial property. It has become possible to simultaneously provide these and to maintain those functions for a long period of time.

That is, Ag on a needle (alumina hydrate) on the surface of a needle-bearded prokaryotic substance (silica or alumina particles, fibers)
Antibacterial substances such as are adsorbed, the active ingredient uniformly coats the surface of the carrier, heat retention, deodorant,
We were able to complete a very useful fiber product that has four functions, each of which has a significantly superior quality for each of them, rather than having the functions of flame retardancy and / or antibacterial property, respectively. It is a thing.

Incidentally, as a prokaryotic substance, JP-A-2-439 is used.
As disclosed in No. 44, 1) Flaky particles such as kaolin, vermiculite or mica mineral 2) Spherical particles such as spherical silica and beryllium 3) Glass, ceramics or fibrous substances such as carbon fiber or sepiolite or natural and synthetic particles Organic fibers 4) Porous substances such as zeolite and diatomaceous earth 5) Various oxides and carbonates such as zirconia, titanium white, zinc white, barium titanate and aluminum titanate,
Pigment substances consisting of sulfates, nitrates, etc. 6) Membrane substances such as plastic films are targeted.

Further, as described above, in the present invention, the aqueous solution of the aluminum salt and the neutralization solution thereof are reacted in the same system in the suspension of the prokaryotic substance to be modified as the first step. By this method, ultrafine alumina hydrate having a specific surface area of 100 μm ² / g or more by the BET method and having a specific surface area of 100 μm ² / g or more is uniformly deposited on the prokaryotic substance and chemically adsorbed, and then in the second stage, in the suspension The intended purpose can be achieved by neutralizing chlorides or nitrates of Ag, Cu, Zn, etc. and chemically adsorbing elements such as Ag, Cu, Zn, etc. or their oxides on the surface of alumina hydrate. However, it is better to carry out the first step and the second step in succession when the processing steps are reversed and the second step is performed first and then the first step is performed, or After, after finishing dry once, it is better than the case of performing the second stage treatment. It has been found that a remarkable significant difference.

Further, the addition ratio of the alumina hydrate or the antibacterial element to the prokaryotic substance needs to be adjusted depending on the specific surface area of the prokaryotic substance.
3 to 50 parts by weight of alumina hydrate, preferably 5 to 30 parts by weight, and when an antibacterial element such as Ag is used alone or in combination, the total amount thereof is 0.5 to 5 parts by element conversion, preferably Is 1 to 3 parts, and when the alumina hydrate is less than 3 parts and the amount of the antibacterial element such as Ag is less than 0.5 part, no significant effect is exhibited, and the alumina hydrate exceeds 50 parts. In this case, agglomeration occurs, and when the amount of antibacterial element such as Ag exceeds 5 parts, it has been found that flame retardant and antibacterial effects are provided, but other heat retaining and deodorizing effects are deteriorated, causing problems in terms of cost.

The present invention can be clarified by the following Example 1.

[0020]

Example 1 (First Step) 100 kg of hydrous silicic acid (manufactured by OKT) having an average particle size of 0.2 μm is dispersed in water to prepare a 2 m ³ water suspension. The alumina hydrate to be formed on this is Al ₂ O ₃ ·.
10 wt of 3H ₂ O adjusted to 20 kg
% AlCl ₃ and further 10 wt% of neutralization equivalent of NH ₄ OH are added to the surface of the hydrous silicic acid with a minor axis of 0.00
Alumina hydrate having a diameter of 2 μm and a major axis of 0.05 μm is deposited and chemically adsorbed. (Second stage) After the above suspension, 5 kg of AgCl was added in an amount of 2 kg in terms of Ag, and then neutralized with 10 wt% of NH ₄ OH to precipitate Ag on the surface of the alumina hydrate. After that, water was added and decantation was performed 5 times until Cl ions reached 30 ppm, followed by press dehydration and drying,
Crush and pulverize.

This powder was added to an acrylic fiber stock solution to prepare fibers 10
Mix 3 parts to 0 parts, and after drying, 1 mmφ x 10 mm
The fiber was manufactured as a prototype. Next, based on the method of Example 1,
Another embodiment in which the amounts of the prokaryotic substance, the alumina hydrate and the antibacterial element Ag were changed was changed to Examples 2 to 4 and Comparative Examples 1 to 6.
Are summarized in Table 1 and listed.

[0022]

[Table 1]

Addition amount of Example 4 and Comparative Examples 4 and 5 0.06
Since the parts are treated directly or indirectly on the fibers, the number of parts to be filled for the acrylic fiber is equivalent to 3 parts. Incidentally, Comparative Examples 3, 4,
The other system in 5 is alumina hydrate or A in another system.
After the production of g, each was mixed with fibers, which corresponds to the conventional production method. Comparative Example 6 is Examples 1 to 4 and Comparative Examples 1 to 5
The acrylic fiber used alone was a non-treated one, which did not adsorb alumina hydrate and Ag at all.

For the above Examples 1 to 4 and Comparative Examples 1 to 6, far infrared radiation intensity relating to heat retention (Shiga Prefectural Shigaraki Ceramics Laboratory Method), NH ₃ deodorization rate (Osaka City Institute of Industrial Research), JIS L109 Table 2 shows the results of measuring the antibacterial properties and the antibacterial properties of the Staphylococcus aureus by the bacterial count method (Japan Chemical Fibers Testing Association method). The numerical values in Table 2 show the most excellent values in terms of heat retention, deodorizing property, flame retardancy and antibacterial property. Acrylic fiber alumina hydrate and A
It is a relative value when the value of Example 4 in which g is directly processed is 100.

[0025]

[Table 2]

In the case where alumina hydrate or Ag is adsorbed on the prokaryotic substance by the method of Examples 1 to 4, when the fiber is washed in an electric washing machine, the effect is obtained even after repeating 50 times of washing and drying. Although not decreased, it is considered that the chemisorption is very strong, but as in Comparative Examples 3 to 5, when alumina hydrate or Ag is produced in another system and then mixed with the fiber, it is washed 5 times. The effect was halved by drying. This was regarded as mere attachment and distinguished from chemisorption.

The numerical values in Table 2 are the values when the number of washings is zero. To summarize the above results, the one obtained by chemically adsorbing alumina hydrate and Ag directly on the fiber surface is very excellent in heat retention, deodorization, flame retardancy and antibacterial property. However, in practice, it is good to directly process textile products processed into socks, supporters, underwear, pajamas, etc., but when processed into fibrils or fabrics, the workability is poor during cutting and sewing, and only functionality is desired. Apart from this, unless the existing cutting and sewing processes are changed, it seems appropriate to fill the fibers with fine particles such as hydrous silicic acid.

In addition to the above-mentioned fibers, the field of application of the present invention is to use as fillers for water purifiers, film fillers for food packaging, cooler filters, automobiles and interior interiors, as well as heat retention, deodorization and flame retardancy. And can impart antibacterial properties,
It can be applied to a wide range of fields.

[0029]

EFFECTS OF THE INVENTION Ultrafine alumina hydrate is chemically adsorbed on the surface of powder such as hydrous silicic acid to increase the specific surface area of each, and further, antibacterial elements such as Ag are chemically adsorbed on the surface. After that, by filling the fiber material with the powder material or coating it on the fiber surface, or by directly using the material obtained by chemically adsorbing alumina hydrate and Ag on the fiber surface for clothing, bedding, etc.
In addition to exerting heat retention, promoting metabolism, and deodorizing effect by heat radiation of far infrared rays, it can impart flame retardancy to curtains, floor coverings and the like, and can also exhibit antibacterial performance. Moreover, these effects and functions can be maintained for a long period of time, and it is expected that they will make a great contribution to related industries including health care and environmental improvement.

[Procedure amendment]

[Submission date] July 8, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006] Therefore, by forming both a fine alumina hydrate having heat retaining property, deodorizing property and flame retardant property and the above-mentioned element having antibacterial property on a prokaryotic material such as fiber or powder, It is possible to obtain a fiber that simultaneously has the four functions of heat retention, deodorization, flame retardancy, and antibacterial properties. Therefore, conventionally, alumina hydrate having heat retention, deodorization and flame retardancy and antibacterial elements such as Ag and / or Cu are prepared in different systems, respectively, and then filled or coated on fibers or the like. It was

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

2) AgNO ₃ and
/ Or CuCl, Cu (NO _{3) 2,} etc., 0.5 to 5 parts 3～5Wt% aqueous solution containing an antimicrobial element is added (in terms of metal), the previous alumina hydrate when neutralized with NH ₄ OH An antibacterial substance such as Ag and / or Cu is uniformly chemisorbed on the surface. 3) The neutralized suspension is washed with water 5 to 10 times by decantation or a centrifuge until NH ₄ Cl or NH ₄ NO ₃ reaches 100 ppm or less, and then filtered.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

That is, Ag on a needle (alumina hydrate) on the surface of a needle-bearded prokaryotic substance (silica or alumina particles, fibers)
And / or Cu or other antibacterial substance is adsorbed,
The active ingredient uniformly coats the surface of the carrier, and is significantly superior to each of the individually tried functions such as heat retention, deodorizing property, flame retardancy, and / or antibacterial property, which have been attempted conventionally. It was possible to complete an extremely useful textile product that has the same quality and four functions at the same time.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Further, the addition ratio of the alumina hydrate or the antibacterial element to the prokaryotic substance needs to be adjusted depending on the specific surface area of the prokaryotic substance.
3 to 50 parts by weight of alumina hydrate, preferably 5 to 30 parts by weight, and when the antibacterial elements such as Ag and / or Cu are used alone or in combination, the total amount thereof is 0.5 to 10 in terms of elements. 5
Parts, preferably 1 to 3 parts, when the alumina hydrate is less than 3 parts and the amount of the antibacterial element such as Ag and / or Cu is less than 0.5 part, no significant effect is exhibited and the alumina water is Aggregation occurs when the Japanese product exceeds 50 parts, and Ag and / or C
It has been found that when the amount of the antibacterial element such as u exceeds 5 parts, flame retardant and antibacterial effects are obtained, but other heat retaining and deodorizing effects are deteriorated, and a problem occurs in terms of cost.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

[0020]

Example 1 (First Step) 100 kg of hydrous silicic acid (manufactured by OKT) having an average particle size of 0.2 μm is dispersed in water to prepare a 2 m ³ water suspension. The alumina hydrate to be formed on this is Al ₂ O ₃ ·.
10 wt of 3H ₂ O adjusted to 20 kg
% AlCl ₃ and further 10 wt% of neutralization equivalent of NH ₄ OH are added to the surface of the hydrous silicic acid with a minor axis of 0.00
Alumina hydrate having a diameter of 2 μm and a major axis of 0.05 μm is deposited and chemically adsorbed. After the (second stage) AgCl of 5 wt% of the above suspension liquid was 2kg added Ag terms, neutralized with 10 wt% of NH ₄ OH, to precipitate Ag on the surface of the alumina hydrate. After that, water was added and decantation was performed 5 times until Cl ions reached 30 ppm, followed by press dehydration and drying,
Crush and pulverize.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

This powder was added to an acrylic fiber stock solution to prepare fibers 10
Mix 3 parts to 0 parts, and after drying, 1 mmφ x 10 mm
The fiber was manufactured as a prototype. Next, based on the method of Example 1,
Another embodiment in which the amounts of the prokaryotic substance, the alumina hydrate and the antibacterial element Ag were changed was changed to Examples 2 to 4 and Comparative Examples 1 to 6.
And another embodiment in which Cu is used instead of Ag in Example 1.
Example 5 and Ag and Cu instead of Ag of Example 1
Another embodiment in which the combination of
Instead of, a mode using Cu of another system was used as Comparative Example 7.
Table 1 below shows the summary.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

[0022]

[Table 1]

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

The addition amount of 0.06 part of the additive of Example 4, Comparative Examples 4, 5 and 7 was applied to the fiber directly or indirectly, so the number of parts to be filled in the acrylic fiber is equivalent to 3 parts. . still,
In Comparative Examples 3, 4 and 5, the separate system was prepared by producing alumina hydrate or Ag by another system and mixing each with fibers, which corresponds to the conventional production method. Further , Comparative Example 6 is Example 4 ,
The acrylic fiber simple substance used in Comparative Examples 3 to 5 is an untreated one in which alumina hydrate and Ag and / or Cu are not adsorbed at all.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

Regarding Examples 1 to 6 and Comparative Examples 1 to 7 , far-infrared radiation intensity relating to heat retention (Shiga Prefectural Shigaraki Ceramics Experiment Station method), NH ₃ deodorization rate (Osaka City Industrial Research Institute method), JIS L109 Table 2 shows the results of measuring the antibacterial properties and the antibacterial properties of the Staphylococcus aureus by the bacterial count method (Japan Chemical Fibers Testing Association method). The numerical values in Table 2 show the most excellent values in terms of heat retention, deodorizing property, flame retardancy and antibacterial property. Acrylic fiber alumina hydrate and A
It is a relative value when the value of Example 4 in which g is directly processed is 100.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

[0025]

[Table 2]

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

Alumina hydrate or Ag adsorbed on the prokaryotic material by the method of Examples 1 to 4 and C of Example 5
In the case where u or Ag and Cu of Example 6 were adsorbed, the effect did not decrease even after 50 times of washing and drying when the fiber was washed in an electric washing machine, and the chemical adsorption was very strong. However, as in Comparative Examples 3 to 5 or 7 , when alumina hydrate or Ag , Cu was produced in a different system and then mixed with the fiber, the effect was halved by washing and drying 5 times. This was regarded as mere attachment and distinguished from chemisorption.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

[0029]

EFFECTS OF THE INVENTION Ultrafine alumina hydrate is chemically adsorbed on the surface of powder such as hydrous silicic acid to increase the specific surface area of each, and further the surface of the surface is uniformly coated with antibacterial elements such as Ag and / or Cu. After chemical adsorption, the powder is filled into the fiber or coated on the fiber surface, or by directly adsorbing alumina hydrate and Ag on the fiber surface for clothing, bedding, etc. In addition to exerting heat retention, promoting metabolism, and deodorizing effect by heat radiation of far infrared rays, it can impart flame retardancy to curtains, floor coverings and the like, and can also exhibit antibacterial performance. Moreover, these effects and functions can be maintained for a long period of time, and it is expected that they will make a great contribution to related industries including health care and environmental improvement.

Claims (2)

[Claims] 1. An ultrafine alumina hydrate having a particle size of 0.1 μm or less and a BET specific surface area of 100 m ² / g or more on the surface of the powder is 3 parts with respect to 100 parts by weight of the prokaryotic substance.
After 50 to 50 parts by weight of chemical adsorption, Ag,
0.5 to 5 parts by weight of an element selected from Cu, Zn, Hg, Sn, Pb, B, Cd and Cr, or an oxide thereof, or a mixture thereof is deposited and chemically adsorbed, which is a powder material. Filled or surface coated with heat insulation, deodorant, flame retardant and antibacterial fiber products. 2. An ultrafine alumina hydrate having a particle size of 0.1 μm or less and a specific surface area by BET method of 100 m ² / g or more is formed on the surface of the fiber in an amount of 3 with respect to 100 parts by weight of the prokaryotic substance.
After 50 to 50 parts by weight of chemical adsorption, Ag,
0.5 to 5 parts by weight of an element selected from Cu, Zn, Hg, Sn, Pb, B, Cd and Cr or one of their oxides or a mixture thereof is deposited and chemically adsorbed to retain heat and deodorize , Flame retardant and antibacterial textile products.