Skin care film and preparation method thereof
A technology for skin care and polylysine, which is applied to skin care preparations, skin diseases, pharmaceutical formulations, etc., can solve the problems of affecting wound healing and comfort, affecting air permeability, poor nursing effect, etc., and achieving low preparation costs. , The effect of short time consumption and good air permeability
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Embodiment 1
[0028] A skin care film, characterized in that it is made of the following parts by weight of raw materials: 10 parts of vinyl-modified hyperbranched polylysine, 0.1 part of strontium acetylacetonate hydrate, 2 parts of isopulegol, glycidyl ether 3 parts of group-terminated allyl alcohol random polyether, 5 parts of ionized imidazole base polycarbonate-based polyester polycondensate, 1 part of hyaluronic acid, 0.02 parts of azobisisobutyronitrile.
[0029] The preparation method of the ionized imidazole salt-based polycarbonate-based polyester polycondensate includes the following steps:
[0030] Step S1: Add polycarbonate diol, imidazole-4,5-dicarboxylic acid, tetrabutyl titanate, and dimethyl sulfoxide into the autoclave, replace the air in the autoclave with nitrogen, and then set it at a temperature of 240°C, The esterification reaction is carried out under the condition of an absolute pressure of 50KPaa. When the amount of water output reaches the theoretical amount, the ester...
Embodiment 2
[0035] A skin care film, characterized in that it is made of the following parts by weight of raw materials: 13 parts of vinyl-modified hyperbranched polylysine, 0.15 parts of strontium acetylacetonate hydrate, 2.5 parts of isopulegol, and glycidyl ether 3.5 parts of group-terminated allyl alcohol random polyether, 6 parts of ionized imidazole base polycarbonate-based polyester polycondensate, 1.5 parts of hyaluronic acid, and 0.03 parts of azobisisoheptonitrile.
[0036] The preparation method of the ionized imidazole salt-based polycarbonate-based polyester polycondensate includes the following steps:
[0037] Step S1: Add polycarbonate diol, imidazole-4,5-dicarboxylic acid, titanium dioxide, and N,N-dimethylformamide into the autoclave, replace the air in the autoclave with helium, and then set it at a temperature of 250 The esterification reaction is carried out under the conditions of ℃ and 65KPa absolute pressure. When the water output reaches the theoretical amount, the este...
Embodiment 3
[0042] A skin care film, characterized in that it is made of the following parts by weight of raw materials: 15 parts of vinyl-modified hyperbranched polylysine, 0.2 parts of strontium acetylacetonate hydrate, 3 parts of isopulegol, and glycidyl ether 4 parts of group-terminated allyl alcohol random polyether, 7.5 parts of ionized imidazole base polycarbonate-based polyester polycondensate, 2 parts of hyaluronic acid, and 0.035 parts of benzoyl peroxide.
[0043] The preparation method of the ionized imidazole salt-based polycarbonate-based polyester polycondensate includes the following steps:
[0044] Step S1: Add polycarbonate diol, imidazole-4,5-dicarboxylic acid, titanium chloride, and N,N-dimethylacetamide into the autoclave, replace the air in the autoclave with neon gas, and then The esterification reaction is carried out at a temperature of 255°C and an absolute pressure of 80KPa. When the amount of water output reaches the theoretical amount, the esterification is termina...
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