With the development of the economy and improving quality of life,sunscreen products have become an indispensable part of people’s daily lives.However,traditional sunscreen products have several shortcomings,such as ...With the development of the economy and improving quality of life,sunscreen products have become an indispensable part of people’s daily lives.However,traditional sunscreen products have several shortcomings,such as sticky skin feel,clumping,and skin irritation.In addition,the price of sunscreen products is relatively high due to the expensive ingredient:UV absorbers.To solve the above problems,a film-forming agent had been added to the general sunscreen formula to synergistically improve the consumer experience without causing any adverse side effects.It is crucial to achieve sun protection factors(SPF)booster through other cheaper agents.This article mainly studies and verifies the synergistic impact of Carfil■UV35(a water-based polyurethane product)in sunscreen products and discusses its application scope.The hen’s eggchorioallantoic membrane assay(HET-CAM)test and the human patch test were used to verify its mildness to the skin.Results also showed that Carfil■UV35 could effectively improve the water resistance of sunscreen products.What’s more,the SPF improvement test shows that only 5% Carfil■UV35 can increase the SPF value from 15 to 30.In short,the research in this article can provide specific ideas for the formulation design of sunscreen products and is of great significance to the application and SPF increase of water-based polyurethane film-forming agents in sunscreen cosmetics.展开更多
A novel fluorescent aqueous polyurethane emulsion DDAQ-TDI-PU was synthesized by blocking the anthraquinone moiety of 1,4-diamino-2,3-diphenoxyanthraquinone（DDAQ） into polyurethane chain using 2,4-tolylene diisocyan...A novel fluorescent aqueous polyurethane emulsion DDAQ-TDI-PU was synthesized by blocking the anthraquinone moiety of 1,4-diamino-2,3-diphenoxyanthraquinone（DDAQ） into polyurethane chain using 2,4-tolylene diisocyanate（TDI）,poly（propylene glycol） and 2,2-dimethylol propionic acid.The chain structure of DDAQ-TDI-PU was confirmed by means of Fourier transform infrared spectroscopy and UV-vis analysis.Comparing to the UV-vis spectrum of DDAQ,DDAQ-TDI-PU showed a hypsochromic shift from the absorption maxima of 518,558,609 nm to 510,548,586 nm,respectively.It was found that the fluorescence intensity of DDAQ-TDI-PU emulsion was enhanced greatly comparing with that of DDAQ.The fluorescence of DDAQ-TDI-PU was very stable not only for the long term storage but also for the fluorescence quencher.展开更多
文摘With the development of the economy and improving quality of life,sunscreen products have become an indispensable part of people’s daily lives.However,traditional sunscreen products have several shortcomings,such as sticky skin feel,clumping,and skin irritation.In addition,the price of sunscreen products is relatively high due to the expensive ingredient:UV absorbers.To solve the above problems,a film-forming agent had been added to the general sunscreen formula to synergistically improve the consumer experience without causing any adverse side effects.It is crucial to achieve sun protection factors(SPF)booster through other cheaper agents.This article mainly studies and verifies the synergistic impact of Carfil■UV35(a water-based polyurethane product)in sunscreen products and discusses its application scope.The hen’s eggchorioallantoic membrane assay(HET-CAM)test and the human patch test were used to verify its mildness to the skin.Results also showed that Carfil■UV35 could effectively improve the water resistance of sunscreen products.What’s more,the SPF improvement test shows that only 5% Carfil■UV35 can increase the SPF value from 15 to 30.In short,the research in this article can provide specific ideas for the formulation design of sunscreen products and is of great significance to the application and SPF increase of water-based polyurethane film-forming agents in sunscreen cosmetics.
基金Financial supports from the National Natural Science Foundation of China(No.51073144)Natural Science Foundation of Anhui Education Department(No.KJ2011B051)
文摘A novel fluorescent aqueous polyurethane emulsion DDAQ-TDI-PU was synthesized by blocking the anthraquinone moiety of 1,4-diamino-2,3-diphenoxyanthraquinone（DDAQ） into polyurethane chain using 2,4-tolylene diisocyanate（TDI）,poly（propylene glycol） and 2,2-dimethylol propionic acid.The chain structure of DDAQ-TDI-PU was confirmed by means of Fourier transform infrared spectroscopy and UV-vis analysis.Comparing to the UV-vis spectrum of DDAQ,DDAQ-TDI-PU showed a hypsochromic shift from the absorption maxima of 518,558,609 nm to 510,548,586 nm,respectively.It was found that the fluorescence intensity of DDAQ-TDI-PU emulsion was enhanced greatly comparing with that of DDAQ.The fluorescence of DDAQ-TDI-PU was very stable not only for the long term storage but also for the fluorescence quencher.
