7 results about "Isopalmitate" patented technology

The present application relates to the field of skin care products, and discloses a whitening and anti-aging composition for skin care products and application thereof, and an essence oil and a preparation method thereof. The whitening and anti-aging composition for skin care products contains an active substance combination and a compound essential oil and plant oil combination; the active substance combination contains glabridin, 4-butyl resorcinol, undecylenoyl phenylalanine, natural bisabalol, ascorbic acid tetraisopalmitate and teprenone; the compound essential oil and plant oil combination contains Damascus rose essential oil, magnolia essential oil, frankincense essential oil, Roman chamomile essential oil, carrot seed essential oil, passion fruit seed oil, red wolfberry seed oil, rose fruit oil and sea buckthorn fruit oil. The skin care product prepared from the whitening and anti-aging composition has a more moderate and efficient transdermal absorption rate, and has excellent anti-photoaging effect and whitening and freckle-removing effect.

The invention discloses a preparation method of ascorbyl tetraisopalmitate, which is characterized in that L-ascorbic acid and 2-hexylcapraldehyde are used as raw materials, SO4 < 2-> / Fe3O4 (at) TiO2-ZrO2 is used as a main catalyst, GO-Cu-PMA is used as a cocatalyst, and an oxidative esterification reaction is carried out in the presence of an oxidant to prepare the ascorbyl tetraisopalmitate, the mass ratio of the main catalyst to the cocatalyst is (4.5-5.5): 1, and the oxidant is persulfate. The preparation method of ascorbyl tetraisopalmitate provided by the invention has the advantages of mild reaction conditions, high reaction efficiency, simple preparation process, easy recovery of the catalyst, high product yield and purity, easy realization of large-scale production, and very strong industrial application value.

The invention relates to the technical field of cosmetics, in particular to anti-aging and whitening essential oil dew and a preparation method thereof. The anti-aging and whitening essential oil lotion comprises a water phase, an oil phase and a wrapping system, the wrapping system comprises lipidosome and a cyclodextrin inclusion compound; a first active component is encapsulated in the liposome, and the first active component comprises at least one of rosa damascena flower oil, meadowfoam seed oil, raspberry seed oil, tocopherol and ascorbyl tetraisopalmitate; the cyclodextrin inclusion compound comprises a second active component, and the second active component comprises at least one of 4-butylresorcinol, glabridin and acetylchitosamine. According to the invention, the technical bottlenecks of the multi-active-ingredient functional cosmetics in the aspects of stability, transdermal property and efficacy synergy are systematically overcome in principle through an innovative double-synergistic wrapping system and a corresponding preparation method; the invention provides an essential oil lotion product with excellent comprehensive performance and anti-aging and whitening effects and an efficient and reliable preparation method thereof.

The present application relates to the technical field of ophthalmic drugs, in particular to a vitamin C isopalmitate (VC-IP) eye drop for preventing and treating myopia and a preparation method thereof. In view of the problems of large side effects and poor compliance of the existing myopia prevention means, the present application provides an eye preparation taking tetraisopalmitate ascorbate as the main active ingredient, which improves the drug stability and corneal permeability through the liposolubility thereof. The eye drop can effectively inhibit the growth of the eye axis and improve the accommodation lag, and has no irritation, and is suitable for long-term use.

The invention belongs to the technical field of organic synthesis, and particularly relates to a preparation method of ascorbyl tetraisopalmitate. The preparation method of ascorbyl tetraisopalmitate provided by the invention comprises the following steps: adding L-ascorbic acid, isopalmitic acid and a catalyst DMAP into a polar aprotic solvent, and uniformly mixing; under the protection of nitrogen, cooling the mixed solution to-5-5 DEG C, adding a condensing agent EDCI in batches, and carrying out condensation reaction at 20-30 DEG C; and after the reaction is finished, adding water, and sequentially carrying out extraction, washing, water removal and concentration to obtain ascorbyl tetraisopalmitate. The preparation method provided by the invention does not need to prepare an acyl chloride compound in advance, is simple in post-treatment, has ideal yield and purity, and is easy to realize industrial production.

This invention discloses a highly efficient and green synthetic method for ascorbic acid tetraisopalmitate, belonging to the field of organic synthesis technology. The method employs a MOF-confined functionalized catalyst, wherein the catalyst uses acetic acid-etched mesoporous amino-functionalized UiO-66 as a support, and Zn... 2+ Lewis acid centers are modified by coordination with amino groups on the inner wall of the pores, and lipase is covalently immobilized in the mesoporous channels by glutaraldehyde, forming a co-localized synergistic catalytic system. Glycerol is added as a protective agent during catalyst preparation to improve the lipase activity retention rate. Using L-ascorbic acid and methyl 2-hexyldecanoate as raw materials, the target product was synthesized via transesterification in n-heptane solvent at 60-65℃ for 8-16 hours, with a yield of 92.3% and a purity of 99.5%. The catalyst retained 92.6% of its activity even after 10 reuses. This method features mild reaction conditions, avoids the use of highly corrosive reagents, and exhibits good catalyst stability.

This invention discloses a composition, cosmetic, and preparation method with dual whitening and skin-smoothing effects. The composition comprises acetyl glucosamine, ascorbic acid tetraisopalmitate, and adenosine compounds in a mass ratio of (0.1–5):(0.1–10):(0.01–7). It is applied in cosmetics. Compared with existing technologies, the components of this invention work synergistically, resulting in a mild and non-irritating composition with simple and clearly defined components, exhibiting excellent whitening and skin-smoothing functions.