Tulobuterol containing pressure-sensitive adhesive, transdermal paster, and its preparing method and use
A technology of hot-melt pressure-sensitive adhesive and transdermal penetration enhancer, which is applied in the direction of medical preparations containing active ingredients, pharmaceutical formulas, organic active ingredients, etc., and can solve the problems of low drug transdermal rate, environmental and personnel hazards, and process operations. Complicated problems, to achieve the effect of preventing asthma attack, fast coating speed and long storage time
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Embodiment 1
[0045] [Prescription] (based on 1000 tablets)
[0046] Tulobuterol 0.5g, propylene glycol 10g, hot-melt pressure-sensitive adhesive 39.5g.
[0047] Process: Add the drug to propylene glycol to dissolve, heat the pressure-sensitive adhesive to 110°C to melt, add the drug-containing solution, mix well, apply it on the anti-adhesive layer, cover it with the backing layer after cooling, and punch it into 3.3cm~ 3.0cm that is, each tablet contains tulobuterol 1%.
[0048] Said pressure-sensitive adhesive has a melting point of 100°C. YY-100 pressure-sensitive adhesive from Shanghai Yuanjing Adhesive Material Co., Ltd. is used, and its components and parts by weight are:
[0049] 100 parts of polyurethane, 100 parts of petroleum resin, 2 parts of white oil, 20 parts of naphthenic oil, 1 part of zinc N, N-dibutylcarbamate.
Embodiment 2
[0051] [Prescription] (based on 1000 tablets)
[0052] Tulobuterol 2.5g, ethanol 5g, hot-melt pressure-sensitive adhesive 42.5g.
[0053] Process: Add the drug to ethanol to dissolve, heat the pressure-sensitive adhesive to 110°C to melt, add the drug-containing solution, mix well, apply it on the anti-adhesive layer, cover it with the backing layer after cooling, and punch it into 3.3cm~ 3.0cm is available.
[0054] Said pressure-sensitive adhesive has a melting point of 100°C. YY-90 pressure-sensitive adhesive from Shanghai Yuanjing Adhesive Material Co., Ltd. is used, and its components and parts by weight are:
[0055] 100 parts of hydrogenated styrene, 100 parts of rosin, 2 parts of white oil, 50 parts of naphthenic oil, 1 part of zinc N, N-dibutylcarbamate.
Embodiment 3
[0057] in vitro skin penetration test
[0058] 1. Skin treatment
[0059] Ex vivo skin of nude mice: Two-week-old nude mice were killed by neck dislocation, the skin was peeled off, subcutaneous fat was carefully removed, and the mice were refrigerated at -30°C for later use. Thaw and rinse with saline before use.
[0060] Human isolated skin: The human breast skin within 2 hours after surgery was removed from the subcutaneous fat layer, washed with normal saline, and then refrigerated at -30°C for later use.
[0061] 2. Transdermal test
[0062] The transdermal test was carried out using a Franz transdermal diffusion cell, and the temperature of the water bath was 32°C. Stirring speed 500prm, transdermal area 2.8cm 2 , the volume of the receiving pool is 7.5ml, and the receiving solution is 40% PEG400-normal saline solution.
[0063] Paste the patch of Example 1 on the stratum corneum of the skin, fix it on the receiving pool, sample 0.5 ml regularly, and supplement the ...
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