JPH115992A - Finishing agent for washing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a finishing agent that prevents the deposition of dirt and facilitates wash-off of dirt by incorporating a water-soluble linear hydroxyl- containing polymer. SOLUTION: A water-soluble linear hydroxyl-containing polymer selected from among optionally ammonium-quaternized polyvinyl alcohols, polyvinylpyrrolidones and polyglycerols is incorporated in a finishing agent for washing. A chemical fiber selected from among polyesters, polyacrylonitriles, polyurethanes and polyvinylidenes is immersed in an aqueous solution prepared by dissolving the finishing agent in water to adsorb the water-soluble linear polymer on the chemical fiber, and the fiber is dried. The coat of the water-soluble hydroxyl-containing polymer facilitates wash-off of oily dirt from the chemical fiber and is very effective on cleanability by washing. Further, by cationizing the water-soluble hydroxyl-containing polymer, the amount of the finishing agent used can be reduced, which is economically profitable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry finishing agent that effectively adsorbs a water-soluble polymer on fibers to prevent the attachment of dirt and to easily remove dirt during washing.

[0002]

2. Description of the Related Art Conventionally, as a finishing treatment for imparting a sense of tension to the finish of washing textile products, gluing using a washing finish has been performed.

[0003] For example, gluing is carried out at the end of washing clothes by using starch paste as a natural raw material or vinyl acetate as a synthetic paste as a finishing agent for cotton fiber products.

A finishing process using a finishing agent will be described along a general washing process with reference to FIG.

[0005] 1 is a so-called "wash" in which water is supplied to a washing tub, laundry (clothing) is put in, a detergent is put in, washing is performed, and dehydration is performed.
It is a process.

At the end of the "washing" process, 2 is supplied with water.
This is the process of dehydration after the second rinsing.

The step 3 is a step of supplying water, performing a second rinsing, and dewatering. No. 4 is a process in which after rinsing a plurality of times, water is supplied again, a sizing agent (finishing agent for washing) is supplied, a finishing process is performed, and the garment is adsorbed. It is not always necessary to supply the laundry finishing agent after dehydrating the rinse water. For example, the second rinse step 3
At the same time.

[0008]

As the antifouling treatment of chemical fibers in clothing, products in which fibers are directly processed are treated. However, many polyester fibers and the like at home have not been subjected to antifouling treatment, and have problems such as difficulty in removing dirt from oily dirt and darkening when worn.

When starch paste or vinyl acetate is used as a finishing agent, some antifouling effect is recognized, but it is not sufficient. Further, when the concentration of the finishing agent is increased in order to enhance the antifouling effect, there is a problem that the texture of the fiber is liable to change.

In the case where the cotton product is subjected to finishing treatment with starch paste in the finishing agent feeding step 4, for example, the concentration of starch paste in water is required to be about 3% in order to obtain a feeling of tightness. When sizing is performed, a large amount of finishing agent is required.

Accordingly, an object of the present invention is to provide a laundry finishing agent which can prevent oily stains and darkening with a small amount of finishing agent.

[0012]

It is considered that the reason why dirt attached to the fibers is difficult to remove is that many of the chemical fibers do not have a hydroxyl group. In other words, when wearing chemical fiber clothing that does not have a hydroxyl group, static electricity is likely to be generated due to the generation of static electricity, and because the chemical fibers are lipophilic in structure, the dirt is easily adsorbed. It is hard to fall.

In view of this point, as a means for solving the above problem, a water-soluble linear polymer having a hydroxyl group is adsorbed on a chemical fiber and coated thinly on the fiber, so that oily dirt is easily released from the chemical fiber. And wash it off when washing.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) This embodiment shows an example in which polyester is used as a chemical fiber and polyvinyl alcohol (PVA) is used as a water-soluble linear polymer having a hydroxyl group.

First, PVA is adsorbed on the fashionable clothes made of polyester fibers. Concrete washing "rinsing"
In the process, a laundry finishing agent containing PVA is charged, and PVA is added.
After immersing the fashionable clothes in the aqueous solution, dehydration and drying are performed.

Next, a hamburger sauce for fashionable clothes,
Oily dirt such as grilled meat is attached, and the ease of dirt removal is measured by washing.

FIG. 1 shows the relationship between the concentration of the PVA aqueous solution and the degree of oily soil cleaning. The degree of washing was measured by irradiating the fiber with the stain with light and measuring the reflectance.
The reflection when no dirt is attached is set to 100%.

Nonionic PVA is 10% at a concentration of 0.1%.
It shows a cleaning degree close to 0%, and it can be seen that oily stains are cleanly removed by washing. On the other hand, in the case of starch paste, even at a concentration of 1%, dirt is slightly removed.

When the concentration of the finishing agent is increased, the degree of washing is also increased. However, when the concentration is 0.5% or more, the clothes become hard and rough, and the texture of the fibers is impaired. The following concentrations are desirable. In consideration of the degree of cleaning, the concentration is desirably 0.01% to 0.1%.

FIG. 2 shows the relationship between the concentration of the finishing agent and the cleaning degree when polyvinyl pyrrolidone (PVP) or polyglycerin (PG) is used as the water-soluble linear polymer having a hydroxyl group. It is also possible to use other water-soluble linear polymers having a hydroxyl group.

As described above, since the fiber coat layer made of the laundry finishing agent of this embodiment has a straight-chain structure having a hydroxyl group, it can be easily washed away with oily soil. Starch also has some hydroxyl groups, but because of its complicated structure, it is difficult to remove from the fiber, and the texture of the fiber is likely to change.

In this embodiment, polyester is used as the chemical fiber. However, the same effect can be obtained by using a fiber such as polyacryl, polyurethane, or polyvinylidene. In addition, a certain effect can be expected for chemical fibers that already have a hydroxyl group such as nylon.

(Embodiment 2) In this embodiment, a water-soluble linear polymer having a hydroxyl group is cationized to be effectively adsorbed on chemical fibers.

That is, since the chemical fiber in the aqueous solution is negatively charged, the cationized water-soluble linear polymer is effectively adsorbed on the fiber.

That is, an antifouling effect can be obtained with a smaller amount of the finishing agent. The following polyvinyl alcohol is the fourth
3 shows a substance cationized with a quaternary ammonium salt.

[0027]

Embedded image

In the chemical formula 1, R1, R2, and R3 of the quaternary ammonium salt are H or CH3 groups, and n is 2 to 3.
A molecular number of 20 is possible.

FIG. 1 shows the relationship between the cationized PVA and the cleaning degree. As shown in FIG. 1, nonionic PV
Although slightly lower than A, the effect was observed at a concentration of 0.01%, and it was confirmed that the effect was obtained with a small amount of addition.

[0030]

As described above, chemical fibers, especially polysul,
A water-soluble polymer coat having a hydroxyl group against fashionable oily stains such as acryl easily removes the stains and has a great effect on washing and washing properties.

By cationizing the water-soluble polymer having a hydroxyl group, the amount of the finishing agent to be used is small, so that the material is economically efficient and environmentally friendly.

[Brief description of the drawings]

FIG. 1 is a diagram showing the degree of cleaning of oil-based stains of a water-soluble polymer having a hydroxyl group of the present invention.

FIG. 2 is a diagram showing the degree of washing of another water-soluble polymer of the present invention.

FIG. 3 is a diagram showing a washing process in a washing machine and a timing of feeding a finishing agent.

Claims (8)

[Claims] 1. A laundry finishing agent comprising a water-soluble linear polymer having a hydroxyl group. 2. A laundry finishing agent comprising a water-soluble linear polymer having a hydroxyl group, wherein the water-soluble linear polymer is adsorbed on chemical fibers. 3. The laundry finishing agent according to claim 1, wherein the water-soluble linear polymer is cationized. 4. The laundry finishing agent according to claim 3, wherein the water-soluble linear polymer is cationized with a quaternary ammonium salt. 5. The laundry finishing agent according to claim 1, wherein the water-soluble linear polymer is polyvinyl alcohol, polyvinylpyrrolidone or polyglycerin. 6. The laundry finishing agent according to claim 1, wherein the chemical fiber is polyester, polyacryl, polyurethane, or polyvinylidene. 7. A washing method, wherein a water-soluble linear polymer having a hydroxyl group is introduced during washing, and the water-soluble linear polymer is adsorbed on chemical fibers. 8. A washing machine configured to input a washing finish containing a water-soluble linear polymer having a hydroxyl group in a washing finishing step.