KR100495387B1 - Soap for Degumming of Silk - Google Patents

Abstract

Soap of the present invention is 75 to 80% by weight of oleate, 1.0 to 2.0% by weight of sodium silicate and 0.5 to 1.0% by weight of sodium carbonate as alkali adjuvant, 1.0 to 1.5% by weight of sorbitan ester ethoxylate as emulsifier, metal ion containment 0.3 to 0.5% by weight of ethylenediaminetetraacetic acid, 0.6 to 0.8% by weight of sodium carboxymethylcellulose, 0.5 to 1.0% by weight of surfactant, 3.0 to 4.0% by weight of sodium chloride, and the remaining amount It relates to a soap for soap refinement, characterized in that consisting of water.

The present invention is almost completely saponified soap refining soap, the pH is stable in all processes when refining the silk, excellent refining effect without using any alkaline chemicals, does not damage the silk fabric, shortening the refining time and water volume It is possible to omit bleaching and white dyeing work process because there is no discoloration (yellowing) after refining, and the soap refining soap, which contains a high content of oleate, which is effective in reducing costs. Can provide.

Description

       Soap for Degumming of Silk}

      The present invention relates to a soap for soap refinement, in particular, a soap for refining, characterized in that a high content of oleate is contained.

      In general, natural fibers such as silk, cotton, and wool contain other impurities in addition to the fiber component.In particular, when the processes such as spinning, weaving, and knitting are carried out, impurities such as chemicals and dust, which are processed for smooth processing, are processed. Is polluted. Particularly, in the case of dogs, fibroin is wrapped in about 25% by weight of sericin, so it is not glossy and stiff. Therefore, when refined with soapy water and removed, only fibroin remains, resulting in silky luster and softness. .

       As such, scouring and degumming are pretreatment processes to remove impurities such as sericin and other fats and minerals attached to the silk fiber to improve affinity for dyeing the silk. Therefore, it is divided into soap refining method, alkali refining method, soap alkali refining method, enzyme refining method and acid refining method.

Soap refining method uses neutral soaps such as marseilles soap and monogen, which have a gloss, soft touch, abundant volume, and good permeability, while soap is combined with Ca ²⁺ , Mg ²⁺ , Fe ^3+, etc. Therefore, soap gas is generated, which causes the fiber to fade or dehydration, which may cause staining of the dye. Therefore, soft water must be used, and after refining, it must be washed well with a hot solution of sodium carbonate.

       In addition, Marseille soap, which is used as a general soap for soap refinement, uses olive oil containing a large amount of oleic acid as a raw material, so it is excellent in quality for refinement of silk, but currently imported products are not produced separately in Korea. Since Marseille soaps, which are actually distributed in Japan, are very expensive in olive oil, most of them are mainly made of Uji, pork, etc., and only a small amount of olive oil.

       Alkaline refining method uses alkaline salt inorganic refining agents such as sodium hydroxide, sodium carbonate, ammonia and sodium silicate to remove sericin, eliminating the effort involved in removing the soap scum, the refining time is short, relatively simple and low On the other hand, because of the high alkalinity of the sodium carbonate aqueous solution, it is easy to process the silk fiber due to the high alkalinity of the solution, and the softness, volume, and lack of gloss have a poor touch.

       Soap alkali refining method adopts only the merits of soap refining method and alkali refining method. Sodium bicarbonate, sodium silicate, sodium phosphate, etc., which is lower than alkaline soap, synthetic detergent, sodium carbonate or sodium carbonate, etc. It is easy to obtain, and various physical properties are superior to alkali refining method.

       Among the above refining methods, soap alkali refining method, which is the most widely used method, is most commonly used with Marseille soap and alkaline sodium salt. This method includes anionic, nonionic and amphoteric surfactants, or metal ion sequestering agents. Should be used in combination with the preparation, if the synergy between soap and alkali is high, there is a disadvantage that it is easy to process. In addition, the refining time is long during the refining of the silk, resulting in lint (gye) on the silk due to the physical friction, and after the refining, the silk is roughened, so that there is no peculiar silky touch and the silk strength decreases.

       Therefore, the present invention is excellent in refining effect without using any alkaline chemicals when refining the silk, does not damage the silk fabric, shortening the refining time and water capacity, there is no discoloration (yellowing) after refining bleaching and white dyeing operation It is intended to solve all the above problems by providing a soap for soap refinement, characterized in that the process can be omitted and the cost reduction accordingly.

       In order to solve the problems described above, the soap scouring soap of the present invention is to provide a soap scouring soap containing a high content of oleate.

       In particular, the soap for soap refinement of the present invention is almost completely saponified soap, and since the pH of the refining process is stable in all processes, the refining effect is better than that of Marseille soap, and it does not damage the silk fabric, thereby obtaining a high quality silk texture. It is an object of the present invention to provide a soap for refining a silk.

       In addition, the silk soap for scouring of the present invention can shorten the scouring time, reduce the amount of scouring water, and do not cause discoloration (yellowing) after scouring, so that bleaching and white dyeing work can be omitted. The purpose is to provide a refining soap.

      Another object of the present invention is to neutralize the oleic acid and caustic soda in a stoichiometric amount to contain 75 to 80% by weight of oleate, so that the residual of free alkali and fat can be minimized. It is characterized by providing a refining soap.

Hereinafter, the present invention will be described in detail.

Silk refining soap of the present invention is 75 to 80% by weight of oleate, 1.0 to 2.0% by weight of sodium silicate and 0.5 to 1.0% by weight of sodium carbonate as an alkali aid, 1.0 to 1.5% by weight of sorbitan ester ethoxylate as emulsifier, 0.3 to 0.5% by weight of ethylenediaminetetraacetic acid as the metal ion blocking agent, 0.6 to 0.8% by weight of sodium carboxymethylcellulose, 0.5 to 1.0% by weight of surfactant, 3.0 to 4.0% by weight of sodium chloride, The remaining amount is characterized by consisting of moisture.

      The soap refining soap of the present invention contains 75 to 80% by weight of oleate, so the refining effect is very good, so the refining of the silk can be made using only the refining soap of the present invention. You do not need to use it with.

Since the soap refining soap of the present invention contains 75 to 80% by weight of oleate, the refining effect is very good even when only the soap refining soap of the present invention is used in the refining process, but the content of oleate is 75% by weight. If less than, the refining effect is reduced, so it is necessary to mix and use alkaline chemicals together, and if it exceeds 80% by weight, the soap content becomes less because the soap content becomes less, so that the solubility is lowered, so it is difficult to handle on the field during refining. .

      Alkali adjuvant includes sodium hydroxide, sodium carbonate, sodium hydroxide, potassium hydroxide, ammonia, ethanolamine, and the like. Preferably, sodium silicate and sodium carbonate are best used.

      Since sodium silicate has good buffering capacity, it not only stabilizes the pH of silk refined soap solution, but also prevents reattachment of sericin, and in particular, reduces the refining time to 1/10. The content of sodium silicate is 1.0 to 2.0% by weight, but when it is added below 1.0% by weight, the buffering capacity becomes unstable and the pH becomes unstable, and the effect of refining the silk is reduced. Higher pH dissolves sericin and fibroin in raw silk, resulting in damage to raw silk and increasing refining time.

As the type of sodium silicate used in the present invention, one of alkali silicate (Na ₂ O · 2SiO ₂ ), neutral sodium silicate (Na ₂ O · 3SiO ₂ ), and sodium metasilicate (Na ₂ SiO ₃ ) is selected. You can use

      In addition, sodium carbonate, another alkali aid, undergoes hydrolysis during scouring and increases the solubility of sericin and prevents re-adhesion of suspended solids from soapy or other waters that are not completely removed during washing after scouring. In addition, it has the effect of preventing the degradation of life and death and maximizes the effect of printing after printing. When the content of sodium carbonate is less than 0.5% by weight, reattachment of the suspended solids cannot be prevented, and when it is added in excess of 1.0% by weight, the problem of refining water boils.

       The sorbitan ester ethoxylate used as an emulsifier in the present invention increases the biodegradability of the emulsifier water and has a dual effect for dissolving the soap in the water well, when the content is less than 1.0 wt% The biodegradability of water becomes poor, and when it exceeds 1.5 weight%, the solubility in water falls.

Ethylenediamine Tetaacetic Acid (EDTA), a metal ion sequestrant used as a water softener in the present invention, effectively softens hard water to improve refining effects and prevents oxidation of soap refining soaps. Discoloration etc. can be prevented. When the content of ethylenediaminetetraacetic acid is less than 0.3% by weight, the soap combines with calcium, magnesium or iron ions in hard water to form insoluble metal soap, resulting in a precipitate, and the production of such insoluble metal soap only wastes soap. But the sediment produced at this time is attached to the silk and accumulates, which causes yellowing, so that the silk's gloss is poor, the touch is rough, and the smell is bad. And if the content exceeds 0.5% by weight, chelate salts are formed, not only to reduce the refining effect but also to cause water pollution.

Examples of the metal ion sequestrant used in the present invention include ethylenediaminetetraacetic acid, zeolite, nitrilotriacetate, sodium hexametaphosphate (calgon, Na ₆ P ₆ O ₁₈ ), and tripolyphosphate (Na ₅ P _3). O ₁₀ ), sodium pyrophosphate (Na ₄ P ₂ O ₇ ), and the like, and ethylenediaminetetraacetic acid is preferably used.

Sodium carboxymethylcellulose (C ₆ H ₉ OCO ₂ COONa) used in the present invention as an anti-adhesion inhibitor has an effect of preventing reattachment of substances such as sericin and various amino acids released from the silk during refining. Also, there is no water pollution and its degradability is high. When carboxymethyl cellulose sodium is used at less than 0.6% by weight, the effect of preventing reattachment is insignificant, and when it is used at more than 0.8% by weight, the gloss of the dog is reduced after refining.

Types of the anti-repositioning agent used in the present invention is sodium carboxymethyl cellulose (C ₆ H ₉ OCO ₂ COONa), polyvinylpyrolidone (C ₆ H ₉ NO) _n , polyethylene glycol And the like, most preferably sodium carboxymethylcellulose.

      Surfactants are added to increase the cleaning power in refining the silk. The surfactants used in the present invention may be used alone or in an appropriate mixture of anionic surfactants, nonionic surfactants or amphoteric surfactants. Although the kind of active agent is not particularly limited, it is most preferable to use an anionic surfactant.

      As the type of the surfactant that can be used in the present invention, one or more selected from the group consisting of alpha sulfone fatty ester, alkyl sulfate ester salt, alkyl ether sulfate ester salt, etc., which are anionic surfactants, may be selected or used, or a nonionic surfactant. One or more selected from the group consisting of phosphorus sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, fatty acid alkanolamide, polyethylene alkyl ether, etc. One or more selected from the group consisting of amino fatty acids, alkyl betaines, sulfone betaines, and the like may be selected and used. The surfactants selected from the above groups may be used by appropriately mixing one or more types.

      Sodium chloride (purified NaCl) can be obtained with high quality saponification by using purified sodium chloride after neutralized saponification. In the case of silk refining, the unstrained substance present in soap powder is often reattached to the silk, and then, after neutralizing saponification, a purified salt may be used to take a cured soap (Curd Soap). When the content of sodium chloride used is less than 3.0% by weight, it is difficult to produce a curd chop, and when the content of the sodium chloride is more than 4.0% by weight can be easily destroyed.

For reference, the soap for soap scouring of the present invention may be added with an appropriate amount of the desired perfume according to the needs of the consumer.

Hereinafter, the present invention will be described in more detail with respect to the soap-refining soap of the present invention, the present invention is not limited by the embodiment.

     Examples 1-3 and Comparative Examples 1-3

     Examples 1 to 3 and Comparative Examples 1 to 3 show the experimental results as shown in [Table 2] as a result of refining using the soap refining soap prepared by the composition components of [Table 1].

     As a result of analyzing the experimental result of [Table 2], in the properties of monoclinic and dissociative properties, as the comparative examples 1 and divalent alkali adjuvant sodium silicate and sodium carbonate were added less than in Examples 1 to 3, the single firing rate was 20 times. And 25 times, very high, and poorly disintegrated or often broken yarn, there are many residues, but Comparative Example 3 is 9 times the single firing rate compared to Comparative Examples 1 and 2 as the alkali agent is added in an appropriate amount as in Examples 1 to 3 As a result, it is relatively low, and the residue is also moderate.

      In addition, in terms of flexibility and glossiness judged by the naked eye and touch, Comparative Example 1 can obtain high quality saponification by adding an appropriate amount of refined sodium chloride. As a small amount or an excessive amount is added, the flexibility and glossiness are poor at the time of refining the silk, which causes problems such as adding a softening agent to increase flexibility or adding glycerin to increase the glossiness.

TABLE 1

                                             Unit: weight%

division Example Comparative example One 2 3 One 2 3 Oleate  75 75  80 50  65 75 Sodium silicate 1.0 2.0 1.0 0.5 0.5 2.0 Sodium carbonate 0.5 1.0 0.5 0.3 0.3 1.0 Emulsifier 1.0 1.5 1.0 1.0 1.0 1.0 Metal Ion Blocker 0.3 0.5 0.3 0.3 0.3 0.3 Reattachment inhibitor 0.6 0.8 0.6 0.7 0.7 0.7 Anionic surfactant 0.5 1.0 0.5 0.5 0.5 0.5 Purified NaCl 3.0 4.0 3.0 3.0 2.0 5.0 moisture 18.1 14.2 13.1 43.7 29.7 14.5 Sum 100.0 100.0 100.0 100.0 100.0 100.0

 * The emulsifier is sorbitan ester ethoxylate, the metal ion sequestrant is ethylenediaminetetraacetic acid, and the anti-reposition agent is sodium carboxymethyl cellulose.

TABLE 2

division Example Comparative example One 2 3 One 2 3  Single shot 7th  5 times  6th 20 times 25 times 9th Maritime No residue No residue No residue Residue Residue Residue usually flexibility good good good usually Bad Bad Luster good good good usually Bad Bad

1) Single firing rate: The number of times the thread breaks in the process of unwinding a thread (about 150g) and winding it on the beam

2) Disintegration: In the last seam of the thread (150g), the inner part of the thread is roughened due to physical friction and prolonged refining. To 10% of yarn is discarded as is.

3) Flexibility: The soft touch and resilience of silk. It is judged by the human eye and touch. If sericin is removed from raw silk, it is necessary to restore the texture of the existing silk. Generally, soap composed of animal fat and non-neutralized animal fat caustic soda inhibits the touch, so a softening agent should be added.

4) Glossiness: The gloss of silk is judged by the human eye. Since unsaturated caustic soda acts as a strong alkali, the inherent gloss is remarkably lowered. Therefore, forced restoration should be generally performed using a compound such as glycerin.

And Examples 1 to 3 and Comparative Example 3 uses 15% by weight of refined soap with respect to fresh green crab (150g), Comparative Examples 1 to 2 to 20% by weight of fresh blue crab (150g) for the same refining effect As a result of experimenting the refining process by dissolving the soap, as shown in Figure 1, Examples 1 to 3 and Comparative Example 3 (corresponding to the ① graph of Figure 1) is gradually refined when refining with a refining time of 25 to 28 minutes It was found that smelting started at 占 폚 and reached its highest point, and then sericin was gradually eliminated. Particularly, in Examples 1 to 3, the reattachment of the residue was significantly reduced in washing with cold water. It can be confirmed that it is good enough not to observe.

     In the case of Comparative Examples 1 to 2 (corresponding to ② graph of FIG. 1), it can be confirmed that after 10 minutes of refining, the refining is rapidly performed at 30 ° C. or more, and the dropping process is carried out too sharply. When the temperature was lowered, the drop washing process was so fast that the foreign material could be released in such a short time and so sensitive to the temperature and pH that the complete refining was not achieved.

Looking at the above experimental contents comprehensively, it can be seen that in Examples 1 to 3 and Comparative Example 3 of the graph shown in Fig. 1, the effect of refining was superior to Comparative Examples 1 to 2 by containing a high content of oleate. there was. In the case of Comparative Examples 1 to 2, the refining effect was decreased due to the low content of oleate and the low content of the alkali preparation, and showed a high single-shot rate and desolvability due to a decrease in buffering capacity. Refining and dropping did not result in complete refining. Particularly, in terms of flexibility and gloss, Comparative Example 1 can obtain high quality saponification by adding an appropriate amount of refined sodium chloride, so that flexibility and glossiness are normal during silk refining, but Comparative Examples 2 and 3 add a small amount or an excess of refined sodium chloride, respectively. As a result of the hardening of the curds or the breakdown of the curds, the unstrained materials were reattached, and glycerin and the like were required to increase the softening agent or the glossiness to improve the flexibility and the flexibility.

The present invention is almost completely saponified soap refining soap, the pH is stable in all processes during the refining process, excellent refining effect without using any alkaline chemicals, does not damage the silk fabric, shorten the refining time and water volume Can be reduced, in particular, since there is no discoloration (yellowing) after refining can be omitted bleaching and white dyeing work process, so the soap refining soap characterized in that it contains a high content of oleate salt, such as cost reduction effect By providing the present invention it was possible to complete the present invention.

1 is a graph showing the results of experiments of refining efficiency of the present invention

Claims (6)

      75 to 80% by weight oleate, 1.0 to 2.0% by weight sodium silicate and 0.5 to 1.0% by weight sodium carbonate as alkali adjuvant, 1.0 to 1.5% by weight sorbitan ester ethoxylate as emulsifier, ethylenediaminetetra as metal ion sequestrant 0.3 to 0.5% by weight of acetic acid, 0.6 to 0.8% by weight of sodium carboxymethylcellulose, 0.5 to 1.0% by weight of surfactant, 3.0 to 4.0% by weight of sodium chloride, and the remainder of the residue consists of water Dog soap.        The soap refining soap according to claim 1, wherein sodium silicate as an alkali adjuvant is selected from one of sodium alkali silicate, neutral sodium silicate and sodium metasilicate.        The soap for refining a metal according to claim 1, wherein the metal ion sequestrant is selected from zeolite, nitrilotriacetate, sodium hexametaphosphate, sodium tripolyphosphate and sodium pyrophosphate.        The soap for soap refinement according to claim 1, wherein the anti-reposition agent is polyethylene glycol.        The soap scouring soap according to claim 1, wherein the surfactant is suitably used by mixing one or more types of anionic surfactants, nonionic surfactants or amphoteric surfactants.        The method of claim 5, wherein the surfactant is selected from one or more selected from the group consisting of alpha sulfone fatty esters, alkyl sulfate ester salts, alkyl ether sulfate ester salts, and the like which are anionic surfactants, or nonionic surfactants. Alkylamino which is one or more selected from the group consisting of sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, fatty acid alkanolamide, polyethylene alkyl ether, or the like, Silk refining soap, characterized in that at least one selected from the group consisting of fatty acids, alkyl betaines, sulfonbetaines and the like is used. .