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1. Phosphate system
The representative product of the alkaline of the phosphate system is a specific method for the alkali use of the system in the Alkaflo.morran patent developed by Sybron. The use of different raw materials can be matched with different pH -values. The main ingredients of high pH alkali are potassium phosphate, potassium hydroxide, and sodium hydroxide (small amount, the purpose is to improve the stability of the alkali liquid on temperature, you can choose not to add). The main components of the low -pH value are sodium phosphate and phosphate. If the alkali of high and low pH value is mixed with different proportions, a series of alkaline liquids of different pH values can be obtained. Add boric acid, ethanlamine and other cushioning capabilities to the alkaline liquid. Among them, ethanlamine can be mononeline, dietary, ethylene, or mixture of them.
When formulating a high -pH value, the amount of potassium phosphate is 20%to 50%, and potassium hydroxide is 2.5%to 20%. If the amount of sodium hydroxide is selected, it is 0.4%to 7%. ~ 8%, the five -aquatic borax is 4%to 10%. When formulating a low -pH value, sodium phosphate dihydrogen is 13%to 40%, phosphoric acid is 0 to 30%, and ethanol is 1.9%to 4%. The patent pointed out that the amount of alkaline fluid in the dyeing bath is 0.1%to 0.3%.
Second, silicate system:
The alkali sterilization of BEMOLFB as the product name is a product of the silicate system. The main components prepared in the ASEERVATHAM patent are: potassium hydroxide, potassium silicate, chelating agent. The addition of chelating is to remove metal ions and avoid adverse effects on dyeing. Common chelated agents include sodium salt of ethyleine tetraona, sodium salts of ethyleneramine tethane, sodium salt of amino triacerite, sodium perthite, and sodium glucose. Among potassium silicate, the proportion of SiO2 and K2O is variable. The best quality ratio is: 1.43 ～ 2.09 (the replacement ratio is 2.24 to 3.28), and its dosage in the dye bath is 2 to 2.5g /L.
3. Carbonate system
Burco NP-QS Alt as the product name is a carbonate system. Its main components are: sodium hydroxide, potassium hydroxide, sodium carbonate, citric acid, acrylic, and is a mixed alkali composed of inorganic alkali and organic alkali.
The main ingredients given by the moore patent: potassium hydroxide, potassium carbonate, potassium citric acid, and potassium polyacrynal. Among them, citric acid and polyacryonic acid are the crystalline inhibitors of the solution, and the role of decentralized agents during dyeing. Potassium carbonate is made to add carbon dioxide to the potassium hydroxide solution. The patent also gives the definition of total alkali and effective alkali. Total alkali refers to the amount of hydrochloric acid consumed by nail orange as an indicator to the titration end point. Effective alkali degree refers to the amount of hydrochloric acid consumed by phenolite as the indicator of the indicator to the titration end point.