Aspirin enteric coated tablet with low content of free salicylic acid and preparation process thereof
A technology of dissociating salicylic acid and aspirin, which is applied to medical preparations containing active ingredients, drug delivery, blood diseases, etc. It can solve the problems of many subjective factors, inconspicuous colorimetry, and difficult to judge accurately, and the effect is obvious. , The method is simple, the effect of great application value
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Embodiment 1
[0037] Formula: aspirin 2.5kg; pregelatinized starch 3.939kg; starch 0.132kg; tartaric acid 0.3kg; 15% starch slurry 1.86kg; dry starch 0.1kg.
[0038] Starch 0.132kg was sieved through 80 meshes with a disc, and starch was pre-dried at 80°C for 4 hours. 2.5kg of aspirin raw material is pulverized with a high-efficiency pulverizer with a coarse sieve; 3.939kg of pregelatinized starch is sieved with a ZS-600 vibrating sieve with 80 meshes; 1.86kg of 15% hot starch slurry is prepared according to the prescription; 3kg of tartaric acid is completely dissolved in boiling and allowed to cool 6kg of purified water; put aspirin and pregelatinized starch in the DH200II tank mixer and mix for 10 minutes, then add the prescribed amount of tartaric acid solution and stir for 15 minutes, then add 15% hot starch slurry and stir until soft For soft materials, use 16-mesh wide-type nylon sieve to make wet granules; put the wet granules in the hopper of the boiling drying granulator, boil and...
Embodiment 2
[0041] Processed according to the production process described in Example 1, the finished product numbered 0854002 was detected by ultraviolet spectrophotometry, and the concentration of free salicylic acid was 3.32 μg / ml.
Embodiment 3
[0043] Processed according to the production process described in Example 1, the finished product numbered 0854003 was detected by ultraviolet spectrophotometry, and the concentration of free salicylic acid was 1.65 μg / ml.
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