Liquid dressing and preparation method thereof
A technology of liquid dressing and sodium hyaluronate, applied in medical science, bandages and other directions, can solve the problems of lack of moisturizing ingredients, unfavorable wound recovery, etc., and achieve the effects of reducing irritation and sensitization risks, simple preparation method and low cost.
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Embodiment 1
[0022] A liquid dressing, comprising the following components by mass percentage: 8% glycerin, 3% polyethylene glycol 400, 0.05% macromolecular sodium hyaluronate, 0.08% low molecular weight sodium hyaluronate, hydrolyzed sodium hyaluronate 0.1%, trehalose 0.5%, methylparaben 0.1%, phenoxyethanol 0.2%, ethylparaben 0.05%, purified water to make up the balance.
[0023] The preparation steps of the liquid dressing are:
[0024] 1) Disperse macromolecular sodium hyaluronate, low molecular weight sodium hyaluronate and hydrolyzed sodium hyaluronate with glycerin, and after the dispersion is uniform, dispersion A is obtained;
[0025] 2) Add polyethylene glycol and trehalose to the dispersion A prepared in step 1) in sequence, and stir evenly to obtain a mixture B;
[0026] 3) Heat the purified water to 90°C and keep it warm for 10 minutes. When the temperature of the purified water drops to 70°C, add the mixed solution B and stir evenly. When the temperature drops to 40°C, disch...
Embodiment 2
[0028] A liquid dressing, comprising the following components by mass percentage: 6% glycerin, 3% polyethylene glycol 400, 0.08% macromolecular sodium hyaluronate, 0.1% low molecular weight sodium hyaluronate, hydrolyzed sodium hyaluronate 0.3%, trehalose 0.5%, methylparaben 0.05%, phenoxyethanol 0.15%, ethylparaben 0.15%, purified water to make up the balance.
[0029] The preparation steps of the liquid dressing are:
[0030] 1) Disperse macromolecular sodium hyaluronate, low molecular weight sodium hyaluronate and hydrolyzed sodium hyaluronate with glycerin, and after the dispersion is uniform, dispersion A is obtained;
[0031] 2) Add polyethylene glycol and trehalose to the dispersion A prepared in step 1) in sequence, and stir evenly to obtain a mixture B;
[0032] 3) Heat the purified water to 90°C and keep it warm for 10 minutes. When the temperature of the purified water drops to 75°C, add the mixed solution B and stir evenly. When the temperature drops to 40°C, disc...
Embodiment 3
[0034] A liquid dressing, comprising the following components by mass percentage: glycerin 5%, polyethylene glycol 400 2%, macromolecular sodium hyaluronate 0.01%, low molecular weight sodium hyaluronate 0.01%, hydrolyzed sodium hyaluronate 0.01%, trehalose 0.1%, ethylparaben 0.1%, purified water to make up the balance.
[0035] The preparation steps of the liquid dressing are:
[0036] 1) Disperse macromolecular sodium hyaluronate, low molecular weight sodium hyaluronate and hydrolyzed sodium hyaluronate with glycerin, and after the dispersion is uniform, dispersion A is obtained;
[0037] 2) Add polyethylene glycol and trehalose to the dispersion A prepared in step 1) in sequence, and stir evenly to obtain a mixture B;
[0038] 3) Heat the purified water to 90°C and keep it warm for 10 minutes. When the temperature of the purified water drops to 75°C, add the mixed solution B and stir evenly. When the temperature drops to 40°C, discharge the material to obtain the liquid dr...
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