KR101542710B1 - Whiteness enhancers for peroxide bleaching and fluorescent dyestuff dyeing - Google Patents

Abstract

The present invention relates to a whiteness enhancer which enhances whiteness and detergency in a process of bleaching with hydrogen peroxide, to enhance impurity removality and whiteness if applying to bleaching cellulosic fiber, paper, pulp, and leather with hydrogen peroxide. A process of producing the whiteness enhancer comprises: a synthesis of homopolymer and copolymer by using double-bonded monomer such as acrylic acid, meta acrylic acid, and maleic anhydride; a secondary reaction with diethylenetriamine penta methylene phosphonic acid, ethylenediamine tetra acetic acid, nitrilotriacetic acid, and diethylenetriamine pentaacetic acid wherein the compounds contain tertiary amine structures; and manufacturing through a synthesis of N-carboxyl cyclic amide collected after vacuum distillation of organic acids which are produced from a reaction of polymer surfactants, cyclic amide, and organic acid anhydride synthesized through an additional reaction with bases such as NaOH and KOH.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to bleaching agents for peroxide bleaching and fluorescent dye dyes,

The present invention relates to a whiteness enhancing agent for enhancing whiteness and detergency during bleaching with a peroxide bleaching agent and dyeing a fluorescent dye, and more particularly, And Copolymer, followed by a secondary reaction with a tertiary amine structure such as Diethylenetriamine penta methylene phosphonic acid, Ethylenediamine tetra acetic acid, Nitrilotriacetic acid, Diethylenetriamine pentaacetic acid, etc. Finally, a polymer prepared by alkali addition reaction such as NaOH, KOH Surfactant is used for bleaching process with hydrogen peroxide such as cellulose fiber, paper, pulp, leather, etc. to improve whiteness and impurity removing ability, and to increase absorbency against cellulose substance in fluorescent whitening dyeing process of fluorescent dye, It is important to give the color of white confession It shall be.

Another component constituting the whiteness enhancer of the present invention is an N-carboxylic cyclic amide prepared by distillation / recovery of organic acid, which is an adduct produced by reacting a cyclic amide and an organic acid anhydride, and decomposing hydrogen peroxide at a low temperature It is possible to impart a whiteness chromaticity of Snow-white by enhancing the bleaching power with stabilization of the activity.

Wool, silk, and the like, the need for the improvement of the quality and the development of the method is required because of the problems such as the severe damage of the fiber due to the alkali used in the bleaching process by the peroxide bleaching agent for obtaining the whiteness, And the like.

In order to minimize the damage of the fiber in the bleaching process by peroxide, it is necessary to use mild alkalis such as sodium carbonate and sodium bicarbonate while excluding the use of strong alkalis such as NaOH and KOH, but such a mild alkalis decomposes to peroxide and bleach activates It is difficult to obtain sufficient whiteness because of the lack of ability.

Thus, in this patent, even in the case of using a mild alkali such as sodium carbonate or sodium bicarbonate in the bleaching process of the protein fiber such as wool and silk with the peroxide, the decomposition activity of the peroxide such as hydrogen peroxide can be promoted and the whiteness chromaticity can be realized , The compound formulated from 1% to 99% of N-carboxylate amide in a substance containing 1% to 99% of Polymer Surfactant prepared by the first polymerization and the second to third addition reaction is referred to as peroxide And to the production of a whitening enhancer which minimizes damage to the fibers by use in bleaching processes.

Among conventional industrial bleaching methods, the method using sodium chlorite or sodium hypochlorite as a bleaching method by low temperature treatment shows a strong bleaching effect at a low temperature in a short time, but is caused by the use of mechanical corrosion and chlorine bleaching agent The environmental problem caused by the toxicity of AOX (Absorbable Organic Halogen) was the biggest problem. When washing is inadequate after bleaching, the chlorine bleaching agent remaining in the material decomposes the dye molecules in the subsequent dyeing process, In recent years, the use of chlorine bleaching agents has been reduced or prohibited in most industrial fields because of the problems such as yellowing of fibers due to residual active chlorine.

In order to overcome the problems caused by chlorine dioxide and the like of the chlorine bleaching agent, the oxygen bleaching method is changed by the bleaching method using hydrogen peroxide. However, since the bleaching method is significantly lower than the chlorine bleaching method, (100 ° C or more) process repeatedly inevitably in order to realize the quality of confessions according to the present invention, and the excessive energy consumption and the long working process lead to the deterioration of the profitability, and the long- In the bleaching process, degradation of the strength caused by changing the cellulose of the paper, pulp, and fibers to oxidized fiber digestion is becoming the most serious problem that damages the durability of the bleached product.

In order to solve the problems described above, low temperature treatment of hydrogen peroxide has been used in the industry in recent years. However, another problem due to remarkably low whiteness, long process time and excessive use of strong alkali such as caustic soda .

The low-temperature bleaching method for peroxide bleaching agents has been developed first in household use rather than industrial use, and is included as a raw material which acts as a decomposing activator of peroxides in the production of detergents for washing machines. Peroxycarboxylic acid The principle of generating the different materials shows different mechanisms for each added substance.

In the conventional low temperature bleaching, there are various substances patent for improving the bleaching degree of the laundry detergent in the case of household use. The bleaching agent for washing detergent, which is widely used in household detergent, includes hydrogen peroxide when dissolved in water such as sodium perborate and sodium percarbonate Sodium perborate monohydrate, sodium percarbonate, sodium peroxodisulfate, urea and oxo baggage, sodium peroxide, etc. These are effective in removing pollution such as fruit juice, swimming pool, etc.

The effect of peroxides varies greatly depending on the bleaching temperature. Sodium perborate shows a bleaching effect at 80 ° C or higher, and sodium percarbonate at 60 ° C or higher. However, considering that general household washing conditions are 20 ° C to 25 ° C in the summer, and 5 ° C in the winter, the peroxides are not sufficiently decomposed at the time of washing.

Accordingly, bleaching activators have been developed to accelerate decomposition activity of peroxides at low temperature. The most widely known bleach activator is tetraacetyl ethylene diamine (TEAD).

 Korean Patent No. 10-0493457 discloses that TEAD exhibits excellent bleaching power for hydrophilic juice stains but limits the elimination of fat-soluble stains. TEAD, which is commercially available, is a powder type granule, As a result, it was not possible to conduct an experiment for industrial use because the solubility in water was too low (20 ° C, 0.2 g / L or less).

As another patent substance, bleaching using an acyl compound as a bleaching activator described in US4483778, US4606838, US4671891 and the like is described. The acyl compound has an effect to remove fat-soluble stains, but it has a disadvantage that it needs to be used in a larger amount than TEAD and it is difficult to use after leaving a strong odor for washing water and clothing after developing bleaching power.

It is an object of the present invention to provide a method of bleaching with a peroxide bleaching agent as a part of a bleaching method to overcome the risks and environmental harm caused by organic halogen compounds such as chlorine dioxide generated in chlorine bleaching process, To improve whiteness and detergency,

More specifically, the polymer surfactant constituting the whiteness enhancer is synthesized by using monomers such as acrylic acid, meta acrylic acid and maleic anhydride, and then homopolymers and copolymers are synthesized. Diethylenetriamine penta methylene phosphonic acid, Ethylenediamine tetra acetic acid, Nitrilotriacetic acid, Diethylenetriamine pentaacetic acid and the like, and finally, an alkali addition reaction such as NaOH or KOH is carried out.

N - Carboxylic amide composed of a method of adding synergy of whiteness and detergency beyond the chlorine - based bleaching method is obtained by distillation and recovery of organic acid which is an adduct produced by reacting cyclic amide with organic acid anhydride .

Typical peroxide bleaching agents include sodium peroxide, sodium percarbonate, sodium perborate monohydrate, sodium perborate tetrahydrate, sodium hypophosphite, and urea and oxo baggage are used as peroxide bleaching agents in domestic and various industries. In particular, hydrogen peroxide is the most commonly used oxygen bleaching agent in the industry.

The whiteness enhancer produced by the present invention typically exhibits an excellent effect of preventing and dispersing pollution and impurities from various pollutants and impurities in an oxygen bleaching process using hydrogen peroxide and has an excellent effect of improving the whiteness of bleached products, In textile dyeing industry, paper industry, and leather industry, which depend on consumer technology, quality improvement and improvement of profitability by process shortening will be evident as the highest whiteness of bleaching material is promoted.

Water Soluble Polymer Surfactant and 1 to 99% by weight of N-Carboxylic Cyclic Amide is contained in the peroxide bleaching process to form a high quality whiteness enhancer .

Water Soluble Polymer Surfactant, which is a representative component of the whiteness enhancer according to the present invention, is prepared by reacting acrylic acid, meta acrylic acid, maleic anhydride, etc. with a tertiary amine structure material, NaOH, KOH, or the like.

N-Carboxyl cyclic amide which is another component of the whiteness enhancer according to the present invention is prepared by distillation and recovery of organic acid which is an adduct produced by reacting cyclic amide with organic acid anhydride.

 The whiteness enhancer prepared by the above-mentioned Formulation of Water Soluble Polymer Surfactant and N-Carboxylic Cyclic Amide can be used in the conditions of low temperature bleaching at room temperature to 80 ° C. or below and general hydrogen peroxide bleaching at a pH of 8 to 11 Promoting the decomposition activity of peroxides and exhibiting excellent washing power, thereby exhibiting an optimum whiteness synergy effect.

The whiteness enhancer according to the present invention can achieve a whiteness exceeding the whiteness of the chlorine-based bleaching method such as sodium hypochlorite or sodium hypochlorite which causes health hazards and environmental harm caused by organic halogen compounds such as chlorine dioxide, It is the most important feature and the best effect is to minimize the load and reduce the energy cost by the low temperature treatment and to improve the profitability.

The polymer surfactant of the present invention is used in the bleaching process using peroxide such as hydrogen peroxide such as cellulose fiber and paper, pulp, and leather to improve whiteness and impurity removing ability, and in the fluorescent bright- It is the main effect of the invention to enhance the power of the snow-white to give the color of the confession of Snow-white.

In order to improve the damage of fiber damage caused by strong alkalis such as NaOH and KOH in peroxide bleaching process of protein fiber such as wool and silk, it is possible to use hydrogen peroxide In order to accelerate decomposition activity of peroxide and to realize the coloration of the whiteness, it is preferable to add 1% to 99% of Polymer Surfactant prepared by primary polymerization and secondary addition reaction to N-carboxylic cyclic amide The use of compounds formulated with% ~ 99% of the material in the peroxide bleaching process is a major feature of obtaining a whiteness bleaching with little fiber damage.

The present invention relates to a process for washing and bleaching in which all of the peroxide bleaching agents such as hydrogen peroxide, sodium perborate tetrahydrate, sodium perborate monohydrate, sodium percarbonate, sodium hypoxalphosphate, urea and oxo baggage, And the whiteness enhancer is provided under all conditions that provide 0.1 to 50% or more of an alkali agent having a concentration of 10% or more, thereby increasing the detergency and whiteness.

Fig. 1 Process chart of pretreatment of low-temperature CPB using the whiteness enhancer of the present invention and dyeing of fluorescent dyes
Figure 2 Cold Pad Batch Dyeing Machine

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And this does not mean that the technical idea and scope of the present invention are limited.

The whiteness enhancer according to the present invention stabilizes the decomposition activity of hydrogen peroxide by being used in a low temperature treatment at a temperature of 80 DEG C or less and an alkali bleaching process at a low concentration of 11 or less by using hydrogen peroxide such as cellulose fiber, paper pulp and leather, And enhances the removability of impurities. In addition, it enhances the absorption power of the cellulose material in the dyeing process of the fluorescent dye, thereby giving the color of the confession of Snow-white.

The homopolymer and the copolymer according to the present invention are synthesized under a water-based condition of 40 to 100 ° C or lower and then subjected to a second reaction with a tertiary amine structure such as diethylenetriamine penta methylene phosphonic acid, ethylenediamine tetra acetic acid, nitrilotriacetic acid, or diethylenetriamine pentaacetic acid , And NaOH, KOH and the like are added in the third reaction step.

The whiteness enhancer according to the present invention is produced by compounding a water soluble polymer surfactant prepared by the above method with a material containing 1 to 99% by weight of N-carboxy cyclic amide in an amount of 1 to 99% by weight.

Water-Soluble Polymer Surfactant which imparts the whiteness chromaticity of Snow-white by being used in the bleaching process by hydrogen peroxide such as cellulose-based fiber and paper, pulp leather can be represented by the formulas (1) and (2).

≪ Formula 1 >

(2)

[Synthesis Example 1] Preparation of Water Soluble Homopolymer Surfactant

The Water Soluble Polymer Surfactant represented by the above formula (1) is prepared by the reaction formula (1).

<Reaction Scheme 1>

Acrylic acid is added to the reactor, and the reaction is initiated by using a peroxide catalyst such as hydrogen peroxide as a reaction initiator at 40 ~ 100 ° C for 2 ~ 3 hours to complete the first polymerization to form a homopolymer. The Tertiary Amine Compound is then slowly added to the reaction mixture for 3 hours while being careful to generate heat to produce a second reactant. The Tertiary Amine Compound used in this reaction is shown in Formula 3 below.

(3)

 Diethylenetriamine penta methylene phosphonic acid

Ethylenediamine Tetra acetic acid

Ethylenediamine Tetra acetic acid

Nitrilotriacetic acid

Nitrilotriacetic acid

Diethylenetriamine pentaacetic acid

Diethylenetriamine pentaacetic acid

After completion of the second reaction, NaOH or KOH is added for 3 hours while paying attention to the exothermic reaction. When the third addition reaction is completed, all reactions are completed.

[Synthesis Example 2] Preparation of Water Soluble Copolymer Surfactant

The Water Soluble Polymer Surfactant represented by the above formula (2) is prepared by the reaction formula (2).

<Reaction Scheme 2>

Acrylic acid or Meta acrylic acid and maleic anhydride are added at a molar ratio of 10: 1 to 1: 1, and the reaction is initiated by slowly introducing the peroxide catalyst such as hydrogen peroxide at 40 to 100 ° C for 2 to 3 hours To complete the first-order copolymerization.

The Tertiary Amine Compound is then slowly added to the reaction mixture for 3 hours while being careful to generate heat to produce a second reactant. The Tertiary Amine Compound used in this reaction is shown in Formula 3 above. After completion of the second reaction, NaOH or KOH is added for 3 hours while paying attention to the exothermic reaction. When the alkali addition reaction as the third reaction is completed, all these reactions are terminated.

The N-carboxy cyclic amide which is another component of the bleaching enhancer of the present invention can be represented by the following formula (4).

&Lt; Formula 4 >

The N-carboxy cyclic amide represented by the general formula (4) is a cyclic compound having 2 to 6 carbon atoms. The functional group R may be represented by C _n H _{2n + 1-} where n is 1 to 3.

Synthesis Example 3 Synthesis of N-Carboxylic Cyclic Amide

The N-carbocyclic amide represented by the above formula (4) is prepared through the following reaction formula (3)

<Reaction Scheme 3>

The cyclic amide used in the above Reaction Formula 3 is a ring having 3 to 6 carbon atoms and a nitrogen atom, and one of the carbon atoms adjacent to the nitrogen atom necessarily has an oxidized functional group.

&Lt; Formula 5 >

The organic acid anhydride used in Reaction Scheme 3 is a form in which two identical acyl groups are connected by an oxygen atom, and the substance is represented by the following Chemical Formula 6.

(6)

In the Reaction Scheme 3, the cyclic amide is added to the reactor with a slight amount of catalyst in a proportion of 10 to 90% by weight in the reaction. If the cyclic amide is in a solid state at room temperature, the temperature of the reactor is maintained at 40 to 80 ° C to completely dissolve .

 When the cyclic amide is completely dissolved, 5 to 95% by weight of the organic acid anhydride is slowly dropped. When the dropwise addition is completed, the cyclic amide is reacted at a temperature of 80 to 140 캜, which is lower than the boiling point of the organic acid anhydride, Lt; / RTI &gt;

When the reaction is completed, the reaction product, organic acid, is removed by distillation under reduced pressure, and the yield through the above reaction formula 3 is about 55 to 80%.

[Experimental Example] Bleaching and fluorescence dyeing test using whiteness enhancer

The water solubility polymer surfactant produced in Reaction Formula 1 or 2 is contained in an amount of 1 to 99% by weight and the N-carboxylic acid amide formed in Reaction Formula 3 is formulated in an amount of 1 to 99% by weight. Water Soluble Polymer Surfactant reacts with the metal ion in the water and reacts with the following reaction formula (4) when dyeing the fluorescent dye.

<Reaction Scheme 4>

The reaction to the general bleaching action is shown in the following reaction formula (5).

<Reaction Scheme 5>

The perhydroxy ion produced in the above reaction formula 5 reacts with the N-carboxylic acid cyclic amide described in the present patent to produce a peroxy carboxylic acid having a strong bleaching power, so that a high whitening and excellent washing power can be obtained. Respectively.

<Reaction Scheme 6>

The composition of the bleaching solution for proving the whiteness enhancing effect is preferably composed of a whitening enhancer formulated with Water Soluble Polymer Surfactant and N-carboxy cyclic amide, purified water, an aqueous hydrogen peroxide solution, an alkaline agent and a surfactant Do.

 Water Soluble Polymer Surfactant improves cleaning power and whiteness in the application of the bleaching composition having excellent bleaching and washing power according to the present invention.

 As the alkali agent, any alkali agent including amines such as sodium hydroxide, sodium carbonate, potassium carbonate, potassium hydroxide, sodium percarbonate, triethanolamine and the like can be used. When the content is less than 0.1 wt%, the above effect is insignificant, and the content of the alkali agent If it exceeds 50.0% by weight, the cleaning power and whiteness improving effect due to bleaching activation are not greatly improved but the process cost is increased.

The surfactant is not particularly limited as long as it is a component that can be applied to a bleaching agent or a detergent. Any surfactant can be used, but a cationic surfactant, a nonionic surfactant, and an anionic surfactant can be used. It is preferable to use a nonionic surfactant prepared by adding a ketone sulfate, an alkylbenzenesulfonate, an alkane sulfonate or an ethylene oxide, propylene oxide, butylene oxide or the like to alcohols having 6 to 18 carbon atoms or the like as a main raw material .

Hereinafter, in order to demonstrate the effect of the whiteness enhancer according to the present invention, experiments were conducted on a live support having a composition of 100% Cotton.

Table 1 (Prescribed pre-treatment bleaching work for white water) shows the prescription for pretreatment of textile fabrics with an energy-less, non-expensive, bleaching process using conventional preparations.

     Unit: g / L fair  Chemicals usage
Incredible
Refining
bleaching  NaOH 50Be ' 20 H ₂ O ₂ 35% 30  Oxidation agent 10  Synthetic foaming agent 2  Cleaning surfactant 3  Fruit stabilizer 5
Secondary bleaching  NaOH 50Be ' 40 H ₂ O ₂ 35% 20  Fiber protection agent 2  Cleaning surfactant 5  Fruit stabilizer 3

The pre-treatment bleaching process according to the present invention shown in Table 1 is performed in the following manner: Pre-treatment and bleaching (speed: 80 to 100 m / min, pick-up: 80 to 120%, inversion tower reaction time: → Boiling water → Silket (NaOH 20 ~ 27 Bee, 2Nip 2 Padding, Airing Time) → Bleaching (Speed: 80 ~ 100m / min, Pick-up: 80 ~ 120% : 90 sec) → boil water process and the pre-treatment process is completed.

Table 2 below shows the working prescription for pretreating the fabric in the process of shortening energy-saving cold pad batch bleaching process using the whiteness enhancer of the present invention.

Unit: g / L fair  Chemicals usage Incredible
Refining
bleaching  NaOH 50Be ' 100 H ₂ O ₂ 35% 80  Oxidation agent 6  The whitening enhancer 15

The process of pre-treatment by Cold Pad Batch method as shown in Table 2 is as follows: Polishing → Cold Pad Batch Advancement, Refining, Bleaching (Fabric Soaking for Pretreatment Solution: 8 times, Speed: 90 to 110 m / min, Pick- (Boiling water) → Silket (NaOH 20 ~ 27Be, 2Nip 2Padding, Airing Time: 90sec) → Washing (boil water) The preprocessing process is completed. The Cold-Pad-Batch method, which proceeds at room temperature, has a lot size 5 to 6 times larger than the high-temperature treatment method in the liquid phase, less deviation between the lots, simple process steps, And so on.

After completion of the pretreatment, the fluorescence treatment is carried out in order to realize the best Snow-White whiteness. The prescription and conditions for performing the fluorescence whitening treatment are shown in Table 3 below.

Unit: g / L Fluorescent dyeing process Conventional hot liquids
Fluorescent dyeing process New low-temperature CPB
Fluorescent dyeing process Fluorescent dyeing fabric Table 1 Continuous process bleaching pretreatment fabric treated at high temperature by prescription The low temperature CPB process bleaching pretreatment fabric treated with the working prescription using the whiteness enhancer of the present invention in Table 2   Chemicals  NaOH 50Be 1.0% o.w.f 10 g / L H ₂ O ₂ 35% 3.0 30  Fiber protection agent 0.5  Dewaxing agent 1.0  Cleaning surfactant 2.0  The whitening enhancer 15  Fluorescent dyes for cellulose One% 10 Treatment condition Waste = 1: 10
Temperature x time = 100 占 폚 x30 ' Speed: 90 ~ 110m / min,
Pickup: 80 ~ 120%
Batching
: Room temperature X 16 ~ 20 hours) →
Suesse  1 production quantity 1,000 yds 5,000 yds  Number of work More than 5 times 1 time

The process conditions for fluorescent dyeing using the conventional preparation method shown in Table 3 above were as follows: the temperature was raised to 60 ° C, the preparation and dye were added for 20 minutes, the temperature was raised to 100 ° C at a rate of 2 ° C per minute, The fluorescent dyeing process is carried out, cooling is carried out at a rate of 2 ° C per minute to 60 ° C, and an overflow is carried out at 60 ° C for 2 minutes.

The process conditions for the fluorescent dyeing by the new low temperature CPB method using the whiteness enhancer of the present invention as shown in Table 3 are as follows: Padding (Pick-Up: 90 to 120%) to Batching (Speed: 90 to 110 m / min) (Color development: 16 ~ 20 hours, temperature: 28 ~ 32 ℃), the lot size is 5 ~ 6 times higher than the high temperature liquid dye dyeing, the deviation between lots is small, the process step is simple and high energy is used Therefore, profitability such as energy saving is improved remarkably.

The performance comparison between the conventional preparation prepared in the above process and the fabric with the whitening enhancer of the present invention is shown in Table 4 below.

 Exam name Test method High-temperature continuous pretreatment and liquid fluorescence staining method using existing preparation The low temperature CPB pretreatment and CPB fluorescent staining method using the whiteness enhancer of the present invention Absorption (mm / 10 min) KS K 0815
6.27.1 Method B 75.0 93.0 The tensile strength
(Kg) slope KS K 0520 67.2 69.6 Weft 41.9 53.1 Phosphorus strength
(g) slope KS K ISO
13937-1 4,940 5,040 Weft 2,300 2,410 CIE Whiteness KS K ISO
105 - J02 131.32 155.58 Light fastness (grade) KS K ISO
105 - B02 3 to 4 4

Table 4 shows that the absorbency of the fabric prepared by Cold Pad Batch method, which is remarkably reduced in process speed and energy cost by using the whiteness enhancer according to the present invention, is 124% And the tensile strength was compared with the average value of slope and weft, the preparation and treatment method of the present invention was 112% higher than that of the conventional preparation and treatment method, and the tearing strength was compared with the average value of slope and weft The preparation and treatment methods of the present invention were improved by about 103% compared to the conventional preparation and treatment methods and the whiteness of the present invention was 118% higher than that of the conventional preparation and treatment methods, The effect of increasing by about 0.5 level was obtained.

Hereinafter, in order to compare the strong alkaline treatment condition of the whiteness enhancer according to the present invention and the performance of the mild alkaline treatment condition, it is a step of bleaching at the same low temperature. Table 5 below shows the composition of the bleaching solution for each condition.

Chamicals Bleaching solution 1
(Invention) Bleach solution 2
(existing) Bleaching solution 3
(Invention) Bleach solution 4
(existing) 35% hydrogen peroxide 3.5% 3.5% 3.5% 3.5% 50% sodium hydroxide 4% 4% Na ₂ CO ₃ (Sodium carbonate) 0.1% 0.1% Fruit stabilizer 0.5% 0.5% Fiber protection agent 0.3% 0.3% Cleaning surfactant 0.3% 0.3% The whitening enhancer 0.7% 0.7% H ₂ O to 100% to 100% to 100% to 100%

Cotton CM 40's fabric, which is a cellulose-based fiber, was treated with the bleaching solution composition prepared through the bleaching liquors 1 to 4 in Table 6, using the Cold Pad Bleach method, and the specific bleaching process was performed using the Cotton CM 40's fabric Bleaching solution deposition → Mangle padding (2kg / Cm ² ) → Cold Pad Batching = At room temperature (at. 25 ° C) x 12 hr → Washing 3 times → Drying process. Fluorescent staining was excluded in this process. Bleach Liquids 1 and 2 are strongly alkaline treatment conditions and Bleach Liquids 3 and 4 are weak alkali treatment conditions.

The pH of the liquid solution prepared by the prescription of Table 5 is shown in Table 6 below. (However, the pH was measured using a pH meter.)

Bleaching solution 1 Bleach solution 2 Bleaching solution 3 Bleach solution 4 pH > 14 > 14 8.68 10.32

As shown in Table 6 above, the bleaching solution composition prepared through the bleaching solution 3 using the whiteness enhancer of the present invention had a lower alkalinity than the whitening solution composition prepared through the bleaching solution 4 without the whiteness enhancer of the present invention Able to know.

Further, the performance of the fabric treated with the bleach liquor composition prepared through the bleaching liquors 1 to 4 of Table 5 is shown in Table 7 below.

 Exam name Test method Strong alkali condition Weakly alkaline condition Bleaching solution 1
(Invention) Bleach solution 2
(existing) Bleaching solution 3
(Invention) Bleach solution 4
(existing) Absorption (mm / 10 min) KS K 0815
6.27.1 Method B 80.0 49.2 72.4 54.5 CIE Whiteness KS K ISO
105 - J02 64.52 51.54 61.23 40.26

When the results of Table 7 are analyzed, it can be seen that the use conditions of the general preparation under the same alkaline condition and the whiteness enhancer of the present invention are compared with each other. First, the absorption of the fabric treated with the whiteness enhancer of the present invention under strong alkaline conditions The whiteness and whiteness were superior to those of the fabric treated with the bleaching solution 2 using the general preparation of 162% and 125%. In the weak alkaline condition, the absorbency and whiteness of the fabric using the whiteness enhancer of the present invention And 133% and 152%, respectively.

 Also, it was confirmed that the use of the whitening enhancer of the present invention in the weakly alkaline condition was superior in absorbency and whiteness of 147% and 119% to those of the conventional general preparations.

These results show that it can contribute to the improvement of the quality of these fibers because they can be applied to bleaching of protein fibers such as wool and silk which can not be bleached under strong alkaline conditions.

The whiteness enhancer according to the present invention promotes decomposition of peroxide even at a low temperature and exhibits excellent performance and exhibits excellent bleaching performance even under a pH condition lower than a conventional bleaching condition, so that the effect of all bleaching agents by peroxide can be improved, By processing the process at low temperatures, energy can be dramatically reduced.

Claims (8)

A water-soluble homopolymer surfactant represented by the formula (1) which improves whiteness and detergency in the whitening process by the peroxide-based bleaching agent and the fluorescent whitening agent
&Lt; Formula 1 >

A water-soluble copolymer surfactant represented by the formula (2) which improves whiteness and detergency in a whitening process by a peroxide-based bleaching agent and a fluorescent whitening agent
(2)

A whiteness enhancer blended with 1 to 99% by weight of a water-soluble homopolymer surfactant according to claim 1 and 1 to 99% by weight of an N-carboxy cyclic amide represented by the general formula (4)
&Lt; Formula 4 >

A whiteness enhancer blended with 1 to 99% by weight of a water soluble copolymer surfactant according to claim 2 and 1 to 99% by weight of an N-carboxylic cyclic amide represented by the formula (4)
&Lt; Formula 4 >

A method for synthesizing a water-soluble homopolymer surfactant according to claim 1 in Reaction Scheme 1
<Reaction Scheme 1>

A method for synthesizing the water-soluble copolymer surfactant according to claim 2 by the reaction formula 2
<Reaction Scheme 2>

A method of improving whiteness by treating fibers at a temperature of from room temperature to 80 ° C using a whiteness enhancer according to claim 3
A method of improving whiteness by treating fibers at a temperature of from room temperature to 80 ° C using a whiteness enhancer according to claim 4

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