Method for extracting laccaic acid
A technology of lac color acid and extraction method, which is applied in the field of pigments, can solve the problems of shortening the extraction process of lac color acid, environmental pollution, etc., and achieve the effect of improving safety and obvious refining effect
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Embodiment 1
[0072] 1. Preparation of Lac-Na 2 CO 3 the solution
[0073] 1A. Pulverizing the latin gum into granules with a particle size of 4-6 mm, removing impurities such as branches and sand through a circular pendulum sieve, and obtaining the pulverized lacella gum granules;
[0074] 1B, adding 100g of shellac gum pulverized particles to a volume of 500mL Na 2 CO 3 In the solution, heat and keep the temperature at 60°C, stir and dissolve, then filter to further remove impurities such as branches and sand, and purify the shellac; then put the filtered filtrate at 10°C for 24 hours, and cool the shellac resin solution , to make shellac wax crystallization; then filter to remove shellac wax, fatty substances and other insolubles, collect the filtrate, and obtain shellac-Na 2 CO 3 solution (500mL), wherein, Na 2 CO 3 The molar concentration of the solution is 0.19mol / L, the weight of the shellac gum and Na 2 CO 3 The volume ratio of the solution is 1:5, that is, every 1g of shel...
Embodiment 2
[0149] 1. Preparation of Lac-Na 2 CO 3 the solution
[0150] 1A. Pulverizing the latin gum into granules with a particle size of 1 to 4 mm, removing impurities such as branches and sand through a vibrating sieve to obtain pulverized lacella gum granules;
[0151] 1B, adding 100g of shellac gum pulverized particles to a volume of 1400mL Na 2 CO 3 In the solution, heat and keep the temperature at 40°C, stir and dissolve, then filter to further remove impurities such as branches and sand, and purify shellac; then put the filtered filtrate at 5°C for 24 hours, and cool the shellac resin solution , to make shellac wax crystallization; then filter to remove shellac wax, fatty substances and other insolubles, collect the filtrate, and obtain shellac-Na 2 CO 3 solution (1400mL), wherein, Na 2 CO 3 The molar concentration of the solution is 0.10mol / L, the weight of the shellac gum and Na 2 CO 3The volume ratio of the solution is 1:14, that is, every 1g of lac is dissolved in 1...
Embodiment 3
[0167] 1. Preparation of Lac-Na 2 CO 3 the solution
[0168] 1A. Pulverizing the latin gum into granules with a particle size of 7-10 mm, and removing impurities such as branches and sand through a circular pendulum sieve to obtain pulverized lacella gum granules;
[0169] 1B. Add 100g of shellac gum pulverized particles into 300mL of Na 2 CO 3 In the solution, heat and keep the temperature at 90°C, stir and dissolve, then filter to further remove impurities such as branches and sand, and purify the shellac; then put the filtered filtrate at 2°C for 24 hours, and cool the shellac resin solution , to make shellac wax crystallization; then filter to remove shellac wax, fatty substances and other insolubles, collect the filtrate, and obtain shellac-Na 2 CO 3 solution (300mL), wherein, Na 2 CO 3 The molar concentration of the solution is 0.25mol / L, the weight of the shellac gum and Na 2 CO 3 The volume ratio of the solution is 1:3, that is, every 1g shellac is dissolved i...
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