High-performance film coating premix capable of covering peculiar smell, and preparation method thereof
A technology of coating premix and film coating, which is applied in the direction of pharmaceutical formulation, drug delivery, etc., can solve problems such as irritating odor, and achieve the effect of reducing permeability
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[0019] A kind of preparation method of the film coating premix of high performance masking peculiar smell, comprises the following steps:
[0020] (1) Weigh one by one 30-60% of hydroxypropyl methylcellulose, 10-20% of polyacrylic acid resin, 10-20% of polyethylene glycol, 15-20% of ethyl cellulose, flow aid 10-20% coloring agent, 20-40% coloring agent, and 0.5-2% masking agent.
[0021] (2) Add the weighed materials into a high-speed shearing machine, and shear the mixed materials at a low speed of 500r / m for 15 minutes to make the materials preliminarily mixed.
[0022] (3) Increase the rotating speed to 1500r / m and continue shearing the materials for 15-25 minutes, so that the materials are fully embedded, the colorant is fully dispersed, and the finished coating premix is obtained.
[0023] When the present invention is implemented, the coating premix is formulated into a solution with an applicable solvent, and a film with uniform thickness is prepared by casting and...
Embodiment 1
[0024] Embodiment 1: hydroxypropyl methylcellulose 50%, polyacrylic acid resin IV No. 10%, ethyl cellulose 15%, polyethylene glycol 6000 10%, talcum powder 10%, titanium dioxide 10%, color lake 9 %, masking agent 1%.
Embodiment 2
[0025] Embodiment 2: hydroxypropyl methylcellulose: 45%, polyacrylic resin IV No. 15%, ethyl cellulose 17%, macrogol 6000 10%, talcum powder 10%, titanium dioxide 10%, color lake 9%, masking agent 1%.
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