JPH03234878A - Fragrance-containing yarn - Google Patents

Abstract

PURPOSE:To obtain the subject yarn excellent in traveling properties in commercialization and excellent in washing resistance by fixing perfume-containing micro-capsules having <=a specified average particle size to the surface of the yarn having a comparatively large fineness using a resin binder having a specified composition. CONSTITUTION:A yarn such as a synthetic fiber or a chemical fiber having >=50d fineness on total denier base is initially treated with perfume-containing micro-capsules having <=15mum average particle size and with a polyurethane resin emulsion and the above-mentioned capsules are subsequently fixed to the yarn surface by further treating the above-treated yarn with a reactive oraganopolysiloxane to obtain the objective fragrant yarn free from coming off of the above-mentioned capsules and excellent in washing resistance. In addition, it is important in the above-mentioned treatment with the binder to blend both the above-mentioned resins in 1:(5-20) mixing ratio and to use the resins in an amount of 3-5 pts.wt. based on 1 pt.wt. micro-capsule.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a yarn having excellent durability and aromatic properties.

[Conventional technology]

A variety of aromatic textile products have been developed over the years, and many of them are used for final products such as handkerchiefs, socks, and tights, using fragrances themselves, or inorganic porous powders such as activated carbon and gel, or ethylene-vinyl acetate. The common method is to apply, print, or coat copolymer resin particles carrying a fragrance together with a suitable binder.

However, these methods cannot be said to be highly durable as the duration of fragrance is very short and the fragrance agent often falls off.

Therefore, in recent years, methods have been proposed to improve the durability of microencapsulated fragrances. However, this method still requires processing the final product using the Pa, Toni, and Butry method, or pudding!・This method is quite limited in terms of products, for example, it is limited to plain products with no unevenness, and the texture of the product obtained due to the microcapsule adhesive may be rough or hard. Particularly in the hairy world, there was a problem in that the characteristics of the product were not being taken advantage of.

In order to solve these problems, a method can be considered in which perfume-containing microcapsules are fixed in advance to the surface of yarn with a resin, and the final fiber product is manufactured using the yarn to which the microcapsules are fixed.

However, if this method does not find the optimal conditions for the microcapsules, adhesive resin, and yarn, the processability in the product production process will be extremely poor, productivity will decrease, and the physical properties of the knitted fabric will deteriorate. Not only is it extremely inferior to the quality, but
This method is not suitable for practical use because the fragrance-containing microcapsules often fall off during the processing process, resulting in a decrease in aroma performance.

[Problem to be solved by the invention]

Therefore, the object of the present invention is to clarify the optimal conditions that do not deteriorate the processability in the product production process, have excellent properties of the final product, and suppress the shedding of microcapsules during the processing process, and to develop a system that can be used throughout the product. To provide an aromatic processed yarn which is not only possible but also has extremely high utility value and is durable, which can be used for patterned parts or twisted yarns in combination with unprocessed yarn. There is a particular thing.

[Failure to solve the problem]

The present invention uses fragrance-containing microcapsules with an average particle size of 15 μE or less on the surface of the second thread (mixing ratio (weight) of polyurethane resin and reactive organopolysiloxane).
It is a yarn having an aromatic property, which is characterized by being fixed with a pinter made of two resins having a ratio of 1:5 to 20.

The fragrance-containing microcapsules used in the present invention need to have an average particle size of 15 μm or less.

Fragrances include flower scents such as rose, lahenta, and daffodil, fruit scents such as lemon and oriental, and forest scents, but are not particularly limited, but can be used as a micro-fragrance with wall materials such as urea, forsulin resin, and melanin resin. Encapsulated materials are commonly used, and the important thing is that they have a small particle size.

If the particle size of the microcapsules becomes large, the durability of the microcapsules in the process of processing aroma-treated yarn products will not be good. That is, because the particle size is large,
The problem is that it tends to fall off while the yarn is running, or it tends to break due to shearing force due to pressure, etc., and it becomes difficult to uniformly treat the yarn. In other words, the main thread processing methods are cheese processing and total processing, and especially in cheese processing, if the particle size is large, it becomes impossible to uniformly process each layer of the inside, middle, and outside of the cheese. Also from this point of view, the average particle size is preferably 15 μm or less, preferably 10 μm or less, and the particle size distribution is preferably in the range of 01 to 20 μm.

Next, important fixing conditions in the present invention will be described.

The binder used in the present invention is a mixture of two resins, polyurethane resin and organopolysiloxane, in a certain ratio.

The required performance of the binder in the present invention is mainly two points.The first point is to firmly fix and hold the microcapsules to the threads, and to protect the microcapsules from abrasion, pressure, etc. during the product processing process, and to create an aromatic fragrance. The second point is to improve the durability of the product, and the second point is to not have a negative effect on the passability of the product manufacturing process. In other words, it is necessary that the coefficient of friction of the treated yarn against the metal does not increase excessively.

As a result of various studies from the above viewpoints, we found that it is currently difficult to simultaneously satisfy two properties with one type of resin.
This goal was achieved by using two different types of resin together.

In other words, when aiming to increase the adhesion strength, which is the first performance, there are many resins such as acrylic resin, ebony resin, polyurethane resin, urea-formalin resin, melamine resin, etc., and we have investigated various resins. We have discovered a urethane resin that has good elasticity and flexibility and has good compatibility with microcapsules.

On the other hand, the silicone resin is the most favorable in terms of process passability, which is the second point. However, this melanin-based resin alone has a rather weak adhesive strength, so we selected a reactive organopolysiloxane that has a particularly strong film-forming ability.

Preferably, as a result of various studies on polyurethane resins that exhibit a synergistic effect with this reactive orkanopolysiloxane, it is preferable to have a molecular weight of 2,000 to 5,000 and an average particle size of 0.
This effect was found in an emulsion type polyurethane resin with a thickness of about 1 to 1 μm.

Examples of reactive organopolysiloxanes include epoxy-modified polysiloxane, carboxyl-modified siloxane, and amino-modified siloxane, which are derivatives of dimethylborinoxane or methylhydrodiene polysiloxane.Among these, amine-modified polysiloxane is particularly suitable for smoothness, It is possible to obtain excellent results in the wash resistance of the fragrance.

A specific example of the treatment method is to first treat the fibers with an emulsion liquid of microcapsules and polyurethane resin in the first stage, and then to treat them with an emulsion liquid of reactive organopolysiloxane, with a solid content weight ratio of 1 part to 1 part to polyurethane resin. 5 parts by weight of reactive organopolysiloxane
~20 parts by weight is required. Further, the appropriate ratio of the microcapsules to the total amount of pinter is 3 to 5 parts by weight in terms of the solid content of the binder per 1 part by weight of the microcapsules. The reason for this is that the amount of binder required to maintain the durability of the microcapsules must be at least 3 times the weight of the microcapsules, or they will fall off.On the other hand, if the amount exceeds 5 times the weight of the microcapsules, problems during the processing process due to excessive adhesion will occur. Therefore, commercialization becomes impossible. If the proportion of reactive organopolysiloxane in the binder is less than 5 M parts, the holding power of the microcapsules may be good, or the smoothness during the product production process, especially during the knitting and weaving process, will decrease, making it impossible to carry out the process. If it exceeds 20 copies, the operability during the commercialization process will be poor.
However, this is because the fragrance of the obtained product, that is, the washing resistance of the microcapsules decreases, making it impractical.

Further, the amount of the binder fixed to the yarn is preferably in the range of 05 to 25% by weight in terms of resin solid content. If it is less than 0.05% by weight, the adhesion of the microcapsules to the thread is insufficient, and
．． If it exceeds 5% by weight, it becomes excessive and the operability in the product production process deteriorates, resulting in inconvenience.

The material of the yarn to be applied in the present invention is not particularly limited, and includes synthetic fibers such as acrylic, nylon, polyester, rayon, and acetate, as well as various processed yarns such as long fibers of chemical fibers and spun yarns, wool, cotton, and silk. These include natural fibers, single-twisted yarns made from these blends, and decorative yarns.

Furthermore, the yarn used in the present invention has a total denier of 50 parts or more, and if the thickness of the yarn is extremely thin, it will be very difficult to process it industrially, and microcapsules with an average particle size of 15 parts or less It is technically difficult to uniformly treat the surface of the yarn, and preferably 100 to 300
This process involves cheese processing or total processing of threads with a thickness of .

As a typical example of the actual processing method according to the present invention, conventional general dyeing or cheese dyeing is carried out, and the processing is carried out before washing with soaping water and giving a soft finish.

The subsequent steps are carried out under the usual introduction and cheese dyeing conditions, that is, treatment with a finishing agent, dehydration, and drying if necessary. In addition, the drying conditions in the binder treatment have a fairly important effect on the formation of the binder film;
For example, conditions of 100°C x 30 minutes are required.

The aromatic yarn obtained in this way is subjected to conventional cone winding and is made into products using knitting and weaving machines, etc., for full or partial use, such as socks, tights, sweaters, and neckties. There is almost no difference in performance from conventional products.

This final product has an extremely high commercial value that retains its fragrance for a long period of time, even when used for a single dose, and hardly ever comes off when washed at home. can.

〔Example〕

The present invention will be explained below with reference to Examples.

(Example 1) Honnel (acrylic fiber manufactured by Mitsubishi Rayon Co., Ltd.) Bright 2
52 meter count (17
3d) spun yarn at an angle of 9°3 with a cheese dyeing winder
It was rolled up onto a 0' dyeing bobbin and dyed pink with a normal cationic dye. After this, before washing with water and treating with a fabric softener, microcapsules with an average particle size of 5 μm, which are made by microcapsulating rose fragrance with melamine resin, are added to 0.5 μm. 4%owf (% by weight of fiber) The first
It was treated with 40'CX for 30 minutes under the fixing conditions shown in the table, and was further treated with a commonly used cationic softening and smoothing agent Taflon 5-15 (manufactured by Daiichi Kogyo Co., Ltd.) at 2.5% owf', 4 o'cx 2
After treatment for 0 minutes, the liquid was drained, dehydrated and dried.

Dehydration and drying were performed at 90°C6C1 using a cheese dryer, cone-up was performed using a knitting cone winder, and the running tension was set at a yarn speed of 50 n/min using a knitting tester manufactured by Sugihara Keiki Co., Ltd., and jersey texture was performed using a sock knitting machine. We evaluated the ease of organization when organized.

Table 2 shows the results of the fragrance durability test of the obtained knitted fabric, showing the number of washings until the fragrance was recognized in the sensory test.

As shown in the results in Table 2, the knitted fabric according to the present invention under the condition of N02°3.5 has excellent durability and aromatic properties, and at the same time has no particular problem with regard to practical knitting properties. be. Under the condition of No. 38, where the amount of organosiloxane is high, the knitting property is good, but the aroma durability is poor, and as in No. 4, when the ratio of polyurethane resin to organosiloxane is too high, the knitting property is deteriorated. It has been confirmed that too little amount may affect the durability of the aroma.
It can be seen that it does not contribute to the second factor.

On the other hand, even if a fixing effect was achieved using a resin other than polyurethane resin such as No. 67, the smoothness of the treatment system was significantly reduced, resulting in extremely poor operability at the knitting and other commercialization stages.

(Example 2) The third layer was made of standard false twisted yarn of polyester filament.
As shown in the table, four types of cheese with different teniers were dyed in cream color and coated with wall material or melamine resin to determine the average particle size.
Microcapsules containing lemon flavor with a μM concentration of 0.5
%owf, Evaphanol N as polyurethane resin
(Nicca Chemical) was treated with 01% owf, and LE9300 (Nippon Unicar) was treated with 3.0% owf as an organone loxane.

The cheese to which the microcapsules and adhesion agent were added was dehydrated and dried in a cheese dryer at 90°C for 610 minutes, and the outer layer (up to 50g from the surface layer) was removed in order to understand the adhesion status of each layer of the cheese (rolled with IK9). Middle class (5
0g to 500g), inner layer (from middle layer 500g to innermost layer) and cone, and each part is knitted with 1 ply using Geso knitting machine that is optimal for each fineness. Organizability was evaluated by Using this silk fabric, a knitted fabric that had been washed once (according to JI8 103 method) was used as a sample for aroma evaluation, and an aroma sensory test was conducted.

As shown in Table 3, the above results are for samples No., 1, and No. 2, that is, 150d/4.8f and 75d/35
In the case of f, the processing effect that each layer of cheese is uniform and the knitting property are at a completely acceptable level with respect to knitting properties and aromatic properties.

In addition, in the case of No. 3, it has been confirmed that the aroma of the outer layer of the cheese is slightly bad, but it is at a practically acceptable level.In the case of No. 4, 40d and 24f, the inner layer of the cheese has been confirmed. A large amount of microcapsules and binder adhere to the inside and outside layers, and the aromaticity of the middle and outer layers is weak.

In other words, as the diameter becomes smaller, the rolling density 2 of the cheese also increases, and it was confirmed that the influence of tenille is particularly large for such aroma treatments.

(Example 3) Honnel, Tal 3D bibulk (steam shrinkage rate 20%
), 102m/m Haribur Kasotho raw cotton 40% as well as Tal 3D regular (steam shrinkage rate 05%) 1
．． 02+/M＼Rear pull cut raw cotton 30%, merino wool 64'3 30% wool for sweaters 2/3
: 1-c (562a) recognition using rotating hack dyeing machine (bath ratio 1
:50) and stained pale violet using a conventional staining method.

After washing with water, continue to use Lapenda-based fragranced microcapsules (wall material: urea-formalin-based, average particle size 10 μm) under the following conditions.
), dehydrated and dried to make a women's sweater, and it was possible to obtain a product with extremely high commercial value that was fragrant, flexible, and durable even after washing.

(Aromatic treatment conditions) Dyeing → Aromatic treatment → Dehydration → Drying (100℃ x 30 minutes) Pine (F Microsea urchin N502 1.0% owf'
(Fragranced microcapsules manufactured by Matsumoto Yushi Co., Ltd.) Eva 7 Anol NSO, 2% ow4 (Polyurethane resin manufactured by NICCA Chemical Industries) MZ-2013% owf (Aminopoly/loxane manufactured by Nippon Unicar Co., Ltd.) LR1,:
50 40°C x 15 minutes [Effect of the invention] As explained above, the fragrance-bearing thread of the present invention contains 50 microcapsules containing fragrance with an average particle size of 15 μn or less.
The surface of the second yarn from d is made of a polyurethane resin and a reactive orcap polyoloxane, the mixing ratio of which is
) or 1.5 to 20, it has excellent operability in the product manufacturing process and the microcapsules do not fall off ((), making it highly durable.

Therefore, by using this yarn, it is possible to commercialize woolen and sublime products such as sweaters and socks without impairing their original texture and feel.

Claims (2)

[Claims] (1) Fragrance-filled microcapsules with an average particle size of 15 μm or less are placed on the surface of a thread of 50 d or more, consisting of a polyurethane resin and a reactive organopolysiloxane, with a mixing ratio (weight) of 1:5 to 20. An aromatic yarn characterized by being fixed with a binder. (2) The aromatic yarn according to claim 1, wherein the binder is used in an amount of 3 to 5 parts by weight per 1 part by weight of the microcapsules.