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The development process of soap washing agent(2)

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(1) Steps of HPMA hydrolysis of the synthetic operation of the acid anhydride:


(A) It is said that Malay acid anhydride is added to the reactor, then filter water is added, and the heating is began to heat up and stirred. It can be stirred and dissolved at about 40 ° C.


(B) After stirring, add sulfate oxide and iron sulfate, keep stirring, and then add hydrogen peroxide. Note that the temperature is controlled at about 80-90 ° C. The drip speed control temperature of hydrogen peroxide can be adjusted. After 3-4 hours, the temperature can be kept for 1 hour, and the temperature can be reduced to about 50 ° C.


Product appearance: yellow -brown, 50% content


(2) Precautions for the synthesis of hydrolysis of the acidic anhydride:


(A) When the temperature is higher than 80 ° C, stop heating, and start heating when the temperature is lower than 80 ° C;


(B) Drip biopsy from the high slot, the speed is about 3 to 4 hours, pay attention to adjust the flow;


(C) Keep 4 hours of 85 ° C. After the reaction is completed, it will cool down and install it in a plastic barrel;


(D) The production equipment should be sealed, the speed of the mixer can be slower and the stirring rod should be stainless steel;


(E) The catalyst can use iron sulfate, and the color of the product may change a bit.


(1) Synthetic operation steps of Ma-C-Corporation MA/AA:


(A) Mix acrylic acid with some distilled water to get a mixed solution A,


(B) It is said that the quality is about 0.5 % of the total quality of acrylic acid and the total quality of acrylic acid anhydride


Sodium sulfate, then add distilled water, stir and dissolve into solution B.


(C) Slowly pour the solution B into the solution A while stirring while mixing


Receive solution C. Subsequently add it to the high slot to be used.


(D) Add distilled water to the reaction kettle and heat it to 50 ° C. Then start


The mixer and addaic anhydride to the reaction kettle, when the temperature is 70


At this time, the Malay acid anhydride can be completely dissolved at this time.


(E) Add one -third of the total amount of ammonium sulfate to some distilled water


, Stir into a solution, and then add the above reactor.


(F) Put the remaining ammonium sulfate into 30%of the water solution in another high position


Inside the slot, get the solution d;


(G) Waiting for the operation step 4 to complete, the Malay acid anhydride is fully dissolved and heated to 70 ℃


After that, start two high slots, slowly add solution C and D, drop


The acceleration is controlled at 2H, and the temperature in the reactor is controlled from 70 to 75


Between ℃;


(H) After the drip is added, the control temperature can be reacted for 3h between 70 and 75 ° C.


At this time, the irritating odor of acrylic acid disappears, and the viscosity of the solution becomes larger


Essence The solid content of the income product is basically 40%-45%, and then the cooling disc drops


Filter the materials after warm. If the smell of the solution is relatively large, extend the opposite


It should be half an hour.


(2) The main points of the synthesis of MA/AA of the horse-C-Colver: MA/AA:


(A) Brexit design of Malay acid anhydride and acrylic acid


Malay acid anhydride is a chelating ability, and acrylic acid is decentralized.


Mechanism of action; carboxylamine -based alkidine -based adsorption CA2+, MG2+and other metal ions on the long chain of the common vector, which surrounds the newborn CACO3 and MGCO3 on the chain, so that CACO3, MGCO3 and other crystals cannot grow. Its re -deposit effect.


The larger the carboxyle anhydrin anhydride ratio in the co -polymer, the better the product's dispersion capacity for calcium and magnesium ions. Therefore, the MA is added to the AA monomer that is easily aggregated for co -agglomeration to improve the carboxyle anhydrial ratio in the polymer molecular structure. Although the dispersion ability will increase with the increase of the MA dosage, if the amount is too much, the content of free monomer will increase, (because MA is difficult to gather in this system) to reduce the conversion rate, and the product status and performance will be available. Bad influence.


(B) Design of the size of the molecular weight of the horse-C-CPC polymer


A, general low molecular weights are used as water treatment agents, while medium molecular weights are used as dispersant;


b, the pre -treatment requirements highlight the chelating ability, and the dyeing soap is mainly reflected in the dispersion ability.


Therefore, its molecular structure should be designed separately for products used for pre -processing and dyeing soap washing.


(C) Selection and dosage control of the trigger agent


Depending on the activity of the cause, there are three types: high, neutral and low.


A, low -active cause, causes too slowly, the polymerization reaction time is too long, and the response is incomplete;


b, high activity cause, fast decomposition speed, the conversion rate does not meet the requirements;


C. It is advisable to choose a citizer for medium activity. There is an appropriate decomposition speed within the aggregate temperature range. The free radicals produced have appropriate stability, and it must be added in stages.


d, control the amount of the dotter to control the viscosity and molecular weight changes of the polymer.


(D) Adding method and dripping speed


The commonly used feeding method is to add MA and water in advance, and then add AA and cause. You can also add some MA in advance, and then add the remaining MA and AA, and the cause, and you can also adopt a variety of feeding methods such as MA and AA and Dininee. And control the drip acceleration to control the reaction temperature.


(E) Requirements for equipment materials


Because of the acidity of the raw materials, it is easy to corrode the equipment, and even cause leakage, so stainless steel must be used.


(3) Adsorption (ionic adsorption) soap washing agent (third generation)


Based on the polymer soap washing agent, it is re -entered or connected to chemicals with adsorption performance (opposite or can generate symbols). Such soap washing agents have low bubbles or no bubbles, or can also It is made into soap washing, or a acid-based soap washing agent, high-efficiency anti-dipping soap washing agent, etc., such as BASF's Cycianon® XC-W (Seko Energy XC-W), domestic Shanghai and Jiangsu also have good products Essence


(4) Water -saving, energy -saving, environmentally friendly (similar biological enzyme preparation) soap washing agent (fourth generation)


According to statistics, in the entire dyeing processing, the amount of water consumption of soap washing process after active dye dyeing accounts for 65-70%of the total water consumption of drift dyeing; the amount of steam accounts for nearly 50%; the production time accounts for 50%. It can be seen that soap washing is one of the main expenditures in the entire drift dye processing cost, and it is also one of the main source of wastewater. Therefore, it is necessary to develop and develop efficient, water -saving, energy -saving, and environmentally friendly soap washing agents.


There are two types of new environmentally friendly water -saving soap washing agents:


One is a fungus called Cor-Pinus Cinereus, and its active ingredients are peroxidase. It can catalyze the oxidation reactions of dyes and make the dye decolor, so it is also called soap washing enzyme.


After washing of biological enzyme soap, the coloring indexes of the fabrics are better than the traditional soap washing agent process, and can shorten the soap washing time (number of times), reduce water consumption, reduce energy consumption, and reduce sewage emissions. The biological enzyme soap washing system developed by Bayer, Germany, mainly includes Bayla-Serp (enzyme component) and Baylase Assist RP (system special process regulator).


Another kind of water -saving soap washing powder is based on the biological enzyme preparation. According to the principle of decolorization of peroxidase, a new type of soap washing agent developed can also reduce the number of soap washing and water washing, and has washed down. The sewage decolorization effect, at the same time, has the effect of acidic soap washing agent, and washed the fabric to the fabric to achieve neutrality after washing the active dye dyeing soap, and it does not need to be neutralized. Especially the effect is obvious in dark. Domestic products are called high -efficiency water -saving soap flour (enzymes), and manufacturers of Shanghai, Ningbo, Suzhou and other places have begun to supply.


The latest has also developed soap washing powder for active dye printing. It can be applied with the anti -stained soap washing agent after printing, and it can also be applied separately. It is better than the traditional anti -dipping soap washing agent.


These two new types of water -saving soap washing agents can catalyze and decompose dyes with the principle of oxidation reactions, so that the dye is torrent. Compared with the traditional active dye soap washing process, these two new water -saving soap washing agents can effectively remove unsteady dyes and hydrolyzed dyes in the dye solution. Traditional soap washing process can shorten the soap washing time, reduce water consumption, reduce energy consumption, reduce sewage emissions, and at the same time reduce the chroma of sewage, which helps environmental protection and reduce the cost of sewage treatment.


Washing time soap washing time (minute) water consumption (cubic)


Traditional soap washing agent: 6-8 times 211 13.5


Washing flour: 3-5 times 169 9


Gongfan: 3 times 42 4.5


Fifth, the application of various soap washed agents


(1) Single fiber fabrics are used for soap after dyeing



Efficient water -saving soap flour TNS (fourth -generation) application example


After high-efficiency water-saving soap-toa powder TNS (fourth generation), after a soap washing, it can reach the conventional soap washing (washing, soap washing, cold water washing, fixing and pickling neutralization, etc.) Three processes save a lot of water. And it has the effect of losing the color of the foot, which reduces the burden of sewage treatment of the printing and dyeing plant. It is very suitable for the dyeing of the cotton tube yarn and the needle of the knitted fabric.


General color (red, black, etc.) Cuilan and its color fight


Dye dyeing: less than 6% greater than 6% less than 6%


Dosage of water-saving soap flour: 0.5-0.8% 0.8-1.2% 0.3-0.6%


G/L: 1-1.4 1.4-1.6 1-1.2


The choice of the amount of acetic acid is the normal dosage of sodaine during dyeing.


The lower limit is selected from the bath rat (greater than 1:10), and the upper limit is small (less than 1:10).


Soap washing process: (tube yarn) active dye dyeing ends, drainage — rinse with cold water once (10 minutes) drainage --- Add water and add soap powder TNS ---- Slowly temperature heating up 10 minutes to add acetic acid 15 minutes to 95 ° C (pH: 4-5) --- Wash the heat preservation soap for 25 minutes ---- Drainage is good. If it is dark, rinse with water again.


2. After the acid dye is dyed, use anti -dipping soap washing agent


Acid dye molecules generally contain sulfate groups. Two types of acidic dyes with strong acidity and weak acidity:


Strong acid dye molecular weight, low affinity, small directability, easy diffusion and dye, good dyeability, but a little fastness.


The molecular weight of weak acid dyes, high affinity, large directivity, difficulty in diffusion and dyeing, general dyeing, and a little fastness.


The weak acidic acid dye soap is easy to get back when washing.


The anti -stained soap washing agent of acid dyes is completely different from the anti -dipping soap washing agent of active dyes. Because it is a strong anion -type dye, only the adsorption effect of the cationic surfactant is used, and then the high -efficiency dispersant can achieve the anti -dipping effect.


3. Reproduction cleaning agent used after dye dyeing dyeing


Common alkaline -based insurance powder method:


Restore cleaning solution: 38 ° benaoh 2ml /L /L


85% insurance powder 1-3g /L


Pingping plus O 1g/L


Bath ratio: 1:30 Temperature: 70 °-80 ℃ Time: 10 '


Due to the unstable insurance powder, once the moisture is rapidly decomposed, hydrogen and hydrogen sulfide gases are produced, which is very flawed. And the insurance powder itself has an unpleasant stimulating smell. Therefore, environmentally -friendly restore cleaner has been developed, and Shanghai manufacturers have already supplied.


The new environmentally friendly reduction cleaner is a unpleasant smell that does not contain free formaldehyde and does not produce sulfur. It is suitable for decentralized dye dyeing or printing. After cleaning, the color is pure and bright, which can make the printing and dyeing plant safe and convenient.


New type of environmentally friendly restore cleaner TD-20000 application instance:


Restore cleaning liquid formula: TD-2000 0.6-1.2% (O.M.F)


NaOH (100 %) 0.6-1.5 %(O.M.F)


Cleaning temperature: 85 ℃ -95 ℃ Time: 15-20 min Bath ratio: 1: 10


(2) Anti -dipped soap washing agent for blended fiber, composite fiber, and interlaced fabrics


With the endless layers of multi -component fibrous fiber blending, interweaving, and composite fabrics, higher requirements have been made for the printing and dyeing process. Because it is a variety of fibers and dyes for dyeing at the same time, it is very easy to stick to each other. One bathing method should be used with anti -staining agent, and the two bath method is washed in the middle of the dyeing. In order to ensure the dyeing fastness of a variety of fibrous fabrics.


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