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
CO2-copolymer based polyurethane foams were synthesized and characterized in this paper. The foams were found to have higher strength and lower heat of combustion than the conventional polyether polyurethane foams. ...CO2-copolymer based polyurethane foams were synthesized and characterized in this paper. The foams were found to have higher strength and lower heat of combustion than the conventional polyether polyurethane foams. They may find wide applications in many fields.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This project was supported by the National Natural Science Foundation of China(No.20274053).
文摘CO2-copolymer based polyurethane foams were synthesized and characterized in this paper. The foams were found to have higher strength and lower heat of combustion than the conventional polyether polyurethane foams. They may find wide applications in many fields.
