A kind of dragon's blood spray film and preparation method thereof
A technology of dragon's blood and film-spraying agent, applied in the field of traditional Chinese medicine preparations, can solve the problems of low drug loading, poor film-forming property, low utilization rate, etc. Effect
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Embodiment 1
[0063] A spray film of dragon's blood, made of the following raw materials in parts by weight: 2.5% of dragon's blood, 4% of polyvinylpyrrolidone-K30 (PVP-K30), 0.1% of ethyl cellulose (EC), 8% of propylene glycol %, the balance is ethanol.
[0064] Described ethanol is the ethanol that volume concentration is 85%.
[0065] The preparation method of the dragon's blood spray film comprises the following steps:
[0066] (1) Dragon blood jerky is dissolved in ethanol with a volume concentration of 85%, and made into liquid A for later use;
[0067] (2) Dissolve PVPK30 and EC in ethanol with a volume concentration of 85% to make liquid B for later use;
[0068] (3) Keep liquid A at 60°C for heat preservation, add liquid B and propylene glycol while stirring, continue to stir for 30 minutes, take it out and let it stand overnight, filter, add ethanol with a volume concentration of 85% to the full amount, and the product is ready.
Embodiment 2
[0070] A spray film of dragon's blood, made of the following raw materials in parts by weight: 2.5% of dragon's blood, 5% of polyvinylpyrrolidone-K30 (PVP-K30), 0.3% of ethyl cellulose (EC), 7.5% of propylene glycol %, the balance is ethanol.
[0071] The ethanol is 80% ethanol by volume.
[0072] The preparation method of the dragon's blood spray film comprises the following steps:
[0073] (1) Dragon’s blood was dissolved in ethanol with a volume concentration of 80% to make liquid A for later use;
[0074] (2) Dissolve PVPK30 and EC in ethanol with a volume concentration of 80% to make liquid B for later use;
[0075] (3) Keep liquid A at 60°C for heat preservation, slowly add liquid B and propylene glycol while stirring, continue to stir for 40 minutes, take it out and let it stand for 12 hours, filter, add ethanol with a volume concentration of 80%, and the product is ready.
Embodiment 3
[0077] A spray film of dragon's blood, made of the following raw materials in parts by weight: 2.5% of dragon's blood, 6% of polyvinylpyrrolidone-K30 (PVP-K30), 0.4% of ethyl cellulose (EC), 7.5% of propylene glycol %, the balance is ethanol.
[0078] Described ethanol is the ethanol that volume concentration is 75%.
[0079] The preparation method of the dragon's blood spray film comprises the following steps:
[0080] (1) Dragon's blood was dissolved in ethanol with a volume concentration of 75%, and made into liquid A for later use;
[0081] (2) Dissolve PVPK30 and EC in ethanol with a volume concentration of 75% to make liquid B for later use;
[0082] (3) Keep liquid A at 60°C for heat preservation, slowly add liquid B and propylene glycol while stirring, continue to stir for 40 minutes, take it out and let it stand for 12 hours, filter, add ethanol with a volume concentration of 75%, and the product is ready.
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