A long-acting moisturizing sunscreen cosmetic and its preparation method
A long-lasting moisturizing and cosmetic technology, applied in cosmetic preparations, cosmetics, cosmetic preparations, etc., can solve the problems of poor durability, inability to achieve long-lasting moisturizing, easy water loss, etc., to prevent water loss and achieve good sunscreen effect. , the effect of easy process control
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] (1) Take fresh witch hazel branches, grind them in a plant grinder, and then grind them in supercritical CO 2 The crude extract of tannin was obtained, and the crude extract was added to water to prepare a feed liquid with a mass fraction of 17%, and then membrane separation was carried out through a hollow sulfonated polysulfone fiber membrane to obtain purified witch hazel tannin ; The pressure of supercritical extraction is 29MPa, the temperature is 43℃, supercritical CO 2 The flow rate is 11mL / min, the extraction time is 72min; the transmembrane pressure difference of membrane separation is 0.13MPa, the temperature is 38°C, and the flow velocity of feed liquid on the membrane surface is 2.3m / s;
[0032] (2) Dissolve chitosan in an acetic acid solution with a mass concentration of 2%, add colloidal anhydride powder, adjust the pH value to 8, react for 6.5 hours, precipitate, filter, and dry to obtain hydrophilic modified chitosan, Then dissolve the hydrophilic modif...
Embodiment 2
[0040] (1) Take fresh witch hazel branches, grind them in a plant grinder, and then grind them in supercritical CO 2 The crude extract of tannin was obtained, and the crude extract was added to water to prepare a feed liquid with a mass fraction of 16%, and then membrane separation was carried out through a hollow sulfonated polysulfone fiber membrane to obtain purified witch hazel tannin ; The pressure of supercritical extraction is 28MPa, the temperature is 40℃, supercritical CO 2 The flow rate is 8mL / min, the extraction time is 80min; the transmembrane pressure difference of membrane separation is 0.1MPa, the temperature is 36°C, and the flow velocity of feed liquid on the membrane surface is 2.2m / s;
[0041] (2) Dissolve chitosan in an acetic acid solution with a mass concentration of 2%, add colloidal anhydride powder, adjust the pH value to 7.5, react for 6 hours, precipitate, filter, and dry to obtain hydrophilic modified chitosan, and then Dissolve the hydrophilic mod...
Embodiment 3
[0046] (1) Take fresh witch hazel branches, grind them in a plant grinder, and then grind them in supercritical CO 2 The crude extract of tannin was obtained, and the crude extract was added to water to make a feed solution with a mass fraction of 20%, and then membrane separation was carried out through a hollow sulfonated polysulfone fiber membrane to obtain purified witch hazel tannin ; The pressure of supercritical extraction is 32MPa, the temperature is 45℃, supercritical CO 2 The flow rate is 12mL / min, the extraction time is 60min; the transmembrane pressure difference of membrane separation is 0.15MPa, the temperature is 42°C, and the flow velocity of feed liquid on the membrane surface is 2.5m / s;
[0047] (2) Dissolve chitosan in an acetic acid solution with a mass concentration of 2%, add colloidal anhydride powder, adjust the pH value to 8.5, react for 7 hours, precipitate, filter, and dry to obtain hydrophilic modified chitosan, and then Dissolve hydrophilic modifi...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com