Preparation method of cigarette paper additive
An additive, cigarette paper technology, applied in the directions of non-fiber pulp addition, papermaking, textiles and papermaking, etc., can solve problems such as the influence of cigarette smoke components, and achieve the effects of simple method, rapid dissolution, and mild reaction conditions
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Embodiment 1
[0017] Disperse 100g polymalic acid in 2L water, slowly add 50ml (200mg / ml) KOH aqueous solution dropwise into the above polymalic acid solution, continue stirring for 10min to obtain a transparent solution, add 4g zinc acetate and 2g ferric lactate 100ml of aqueous solution, the temperature was gradually raised to 50°C, kept for 1 hour, and the temperature of the reaction solution was lowered to 20°C. The reaction solution was slowly added dropwise to 3L of acetone under stirring, precipitated and filtered. The filter cake was washed successively with 200ml of acetone and 400ml of ether, and dried.
Embodiment 2
[0019] Disperse 100g of polymalic acid in 2L of water, slowly add 50ml (200mg / ml) KOH aqueous solution dropwise to the above polymalic acid solution, continue stirring for 10min to obtain a transparent solution, add 6g of zinc acetate and 1g of germanium tartrate 100ml of aqueous solution, the temperature was gradually raised to 60°C, kept for 2 hours, and the temperature of the reaction solution was lowered to 20°C. The reaction solution was slowly added dropwise to 3L of acetone under stirring, precipitated and filtered. The filter cake was washed successively with 700ml of acetone and 400ml of ether, and dried.
Embodiment 3
[0021] Disperse 100g of polymalic acid in 2L of water, slowly drop 70ml (200mg / ml) of KOH aqueous solution into the above polymalic acid solution, and continue stirring for 10min to obtain a transparent solution, add 8g of zinc acetate and 1g of ferric citrate 100ml of aqueous solution, the temperature was gradually raised to 50°C, kept for 1.5 hours, and the temperature of the reaction solution was lowered to 20°C. The reaction solution was slowly added dropwise to 5L of acetone under stirring, precipitated and filtered. The filter cake was washed successively with 600ml of acetone and 400ml of ether, and dried.
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