JP2007031853A - Fiber product equipped with deodorizing function and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fiber product excellent in deodorizing performance to ammonia, mercaptan or the like and washing durability, especially suitable for fiber product for nursing care durable, to repeated washing. <P>SOLUTION: The fiber product is equipped with deodorizing function obtained by carrying out an ester crosslinking of the fiber product principally composed of cotton fibers with a polycarboxylic acid and then making the fiber product to support a metal/metal salt selected from zinc, iron, copper, aluminum, cobalt and silver. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for applying a durable deodorizing function to a cotton product.

  In recent years, aging has progressed, and the smell of the excrement of bedridden elderly people, especially the caregiver side and the caregiver side, is unpleasant. In addition, there is a demand for a fiber product that has excellent deodorizing performance against ammonia, hydrogen sulfide, and the like, which have a sweat odor, and are a main cause substance of excrement and sweat odor, and a processing method thereof.

  Conventionally, many deodorizing processes in which a fiber having a deodorizing property is applied or sprayed or the compound solution is impregnated with a fiber have been proposed. For example, there is a method using a deodorant substance extracted from a camellia plant (Patent Document 1). However, since the deodorant is merely contained or adhered, it often falls off during use, and there is a problem in the durability of the deodorizing effect such as washing resistance. In particular, it has little effect on sick urine odor.

Japanese Patent Publication No. 2-44950

  There is also a method of graft polymerization of a monomer having a carboxyl group on the fiber surface (Patent Document 2). However, this method is effective only for basic malodors such as ammonia, it is not effective for mercaptans, acid odors such as acetic acid, etc., and the graft polymerization is complicated and the workability is problematic. It has the disadvantage of impairing the fiber texture.

Japanese Patent Laid-Open No. 62-142562

  The inventors of the present invention have completed the present invention as a result of intensive studies to improve the above-mentioned drawbacks of the prior art, and are effective in ammonia gas and mercaptans, and in particular, textile products excellent in washability. It is intended to provide.

  The first gist of the present invention is that a fiber product mainly composed of cotton fibers is ester-crosslinked with a polycarboxylic acid and a metal selected from zinc, iron, copper, aluminum, cobalt, and silver is attached. It concerns the textiles provided with the deodorizing function characterized by these.

  The second gist of the present invention relates to a method for producing a textile product having a deodorizing function, and is selected from polycarboxylic acid, hypophosphite, zinc, iron, copper, aluminum, cobalt, and silver. A cotton fiber is impregnated with a mixture of a selected metal or a metal selected from these metal salts and a metal salt, and heated to cause polycarboxylic acid to be ester-crosslinked to the cotton fiber. The present invention relates to a method for producing a textile product having a deodorizing function characterized by being carried.

  The fiber product of the present invention is a fiber product that has an excellent deodorizing effect such as ammonia and mercaptan, and is also excellent in washing durability, and is particularly suitable for a textile product for nursing care and has good washability. We were able to provide a product that can withstand repeated use.

  The present invention has a deodorizing function by chemically reacting, for example, ammonia, trimethylamine, hydrogen sulfide, methyl mercaptan malodorous gas, metal salt, polycarboxylic acid and catalyst ester-crosslinked fiber products from the bedridden man's waste. It is a thing.

  The fiber product used is mainly a cotton product, and various cellulose-containing fibers such as cotton and hemp, and the shape thereof can be a thread, cotton, cloth, tow, or non-woven fabric. The fiber product of the present invention may be mixed with other fibers.

Cotton fiber is a linear polymer cellulose in which cellulose is the main component and two D-glucoses are linked by β-1,4. This is a structure in which —COOH acid is introduced into —CH ₂ OH group in this structure, and carboxyl group is introduced into the molecule of the fiber product, so that it has excellent adsorptivity to basic malodorous substances such as ammonia and amine. It shows the action as a deodorizing fiber. That is, the ammonia group (—NH ₄ ) is supplemented with the carboxylic acid, and the ammonia odor is deodorized. Mercaptans react with the supported metal ions and are also captured. In addition, the textile product used for deodorization can return the said reaction easily by selecting with a neutral detergent.

  Examples of the polycarboxylic acid used in the present invention include tricarbanilic acid, citric acid, butanetetracarboxylic acid and the like. Of these, the combined use of citric acid and butanetetracarboxylic acid is preferable from the viewpoint of cost. In the combined use, 20 to 100 parts by weight of citric acid, 100 to 20 parts by weight of butanetetracarboxylic acid, and 20 to 80 parts by weight of hypophosphite as a catalyst are preferable compositions.

Examples of the catalyst for introducing —COOH acid into —CH ₂ OH group in the fiber structure include hypophosphites such as Na ₂ HPO ₃ and NaH ₂ PO ₂ . By one or two kinds of mixing, ester crosslinking is carried out in the fiber. The crosslinking conditions are preferably 140 to 160 ° C. × 4 to 6 minutes.

  On the other hand, the function of absorbing mercaptans and the like is that zinc, iron, copper, aluminum, cobalt, silver, etc. are supported on textile products, and these metal ions and hydrogen sulfide (mercaptan) react to become metal sulfide, It eliminates the odor of hydrogen sulfide. The metal compound, for example, copper acetate, mixed in the treatment liquid is 20 to 60 parts by weight. In addition, as a binder to carry | support, the emulsion which mainly has an acrylic acid resin, a urethane resin, etc. is employable.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.
Production Example 1
The cotton fiber product was dipped (padded) in a solution of 8% citric acid, 2% butanetetracarboxylic acid and 7% sodium phosphinate, and crosslinked at 170 ° C. for 2 minutes after drying. The obtained product showed considerable yellowing. In addition, although yellowing is not seen in the bridge | crosslinking for 150 degreeC x 3 minutes, a problem remains in washing resistance.

Production Example 2
When the cotton fiber product was subjected to the same process as in Production Example 1 with tricarbanilic acid, butanetetracarboxylic acid and sodium phosphinate at 50:50:50 (each part by weight), the result of the obtained fiber product was good. However, there is a question about mass productivity.

Production Example 3
Cotton fiber products are immersed in 50:50:50 (each part by weight) citric acid, butanetetracarboxylic acid, sodium phosphinate, and 50 parts by weight of copper acetate using acrylic resin emulsifier as a binder (padding). And crosslinked at 160 ° C. for 3 minutes after drying. After these treatments, soaping was performed at a temperature of 50 ° C. for 10 minutes.

  The effects of Production Example 3 were 99% ammonia removal rate and 85% hydrogen sulfide removal rate in the textile immediately after production. In terms of ammonia removal rate, it was 99% after 10 washes and 96% after 20 washes.

  In Production Example 3, preferably 40 to 60 parts by weight of citric acid, 70 to 40 parts by weight of butanetetracarboxylic acid, 80 to 50 parts by weight of phosphinate, and crosslinking conditions are 145 to 155 ° C. × 4.5 to 4.5 5.5 minutes is good. Silver may be used instead of copper acetate.

The fiber product obtained in the present invention is effective against bad odors such as ammonia, amines, hydrogen sulfide, mercaptans, etc., and has a durable deodorizing function, and its uses are extremely wide. Of course, it can be applied to textile products used for nursing care, and can also be used for indoor deodorization, and can be applied to textile products that can remove sweat odor and aging odor as shirts and underwear.

Claims (8)

  A fiber product having a deodorizing function characterized by ester-crosslinking polycarboxylic acid to a fiber product mainly composed of cotton fiber.   2. A textile product having a deodorizing function according to claim 1, wherein a metal salt is supported on the textile product.   3. A fiber product comprising cotton fiber as a main component, wherein a polycarboxylic acid is ester-crosslinked, and a metal selected from zinc, iron, copper, aluminum, cobalt, silver or a metal salt thereof is supported. Textile product with the stated deodorizing function.   Textile products mainly composed of cotton fibers, polycarboxylic acids, hypophosphites, metals selected from zinc, iron, copper, aluminum, cobalt, silver or metals and metals selected from these metal salts The fiber product was immersed in a mixture consisting of a salt and heated after drying to crosslink the polycarboxylic acid with an ester, and had a deodorizing function characterized by supporting the metal or metal salt. Manufacturing method of textile products.   A textile product mainly composed of cotton fibers is immersed in a mixture of polycarboxylic acid and hypophosphite, and after drying, the textile product is ester-crosslinked with the polycarboxylic acid, and then zinc, A method for producing a textile product having a deodorizing function, wherein a metal selected from iron, copper, aluminum, cobalt and silver or a metal salt thereof is supported.   The method for producing a fiber product having a deodorizing function according to claim 4 or 5, wherein a mixture of polycarboxylic acid and hypophosphite is immersed in the fiber product, and is crosslinked at 100 to 190 ° C after drying.   7. The emulsifier mainly comprising an acrylic resin or a urethane resin as a binder for supporting a metal selected from zinc, iron, copper, aluminum, cobalt and silver or a metal salt thereof. A method for producing a textile product having a deodorizing function. The method for producing a fiber product having a deodorizing function according to any one of claims 4 to 6, wherein the step of immersing the mixture of polycarboxylic acid and hypophosphite in the fiber product uses a padding method.