摘要:
There are provided amphiphilic biodegradable block copolymers comprising polyethylenimine (PEI) as a hydrophilic block and aliphatic polyesters as a hydrophobic block, which can form various size of polymer aggregates and have very low critical micelle concentration, approximately 10−3 g/l in comparison with low-molecular-weight micelle, and self-assembled polymer aggregates formed from the block copolymers in aqueous milieu, which can be applied to solubilization of insoluble drug and a delivery system of proteins, genes or drugs.
摘要:
A percutaneous releasing material and agent having characteristics that include a high stability of an active agent in the formulation, a high topical absorption rate, decreased irritation on the skin, and an increased tactile comfort. The percutaneous releasing material incorporates an external application agent composition that is prepared by using nanometer-sized polymer particles, i.e., particles having a size or diameter between approximately 1 nm and approximately 500 nm, and more preferably having a size between about 30 nm and about 150 nm. Further, the percutaneous releasing material and agent according to the present invention incorporate polymer particles that preferably contain a physiologically active agent that more readily penetrates through the stratum corneum to the upper layer of the dermis, whereby the physiologically active agent is effused into the skin while staying in the upper layer of dermis.
摘要:
There are provided thermotropic liquid crystal polymer microcapsules which can show behavior of liquid crystal as it is within polymer phase due to phase separation between liquid crystal and polymer, so to be incorporated into cosmetic composition as an additive for visual effect, and in loading active ingredients within liquid crystal, can improve the stability of the active ingredients in cosmetic base; and a method for preparing the same; and cosmetic compositions containing the same.
摘要:
The present invention relates to a method for stabilizing enzyme and water- and oil-soluble active components using polyol/polymer microcapsules, and to a cosmetic composition containing the enzyme and the microcapsules. More particularly, the present invention relates to polyol/polymer microcapsules which effectively stabilize the enzyme and active components, which are unstable in the formulations, through increasing the solubility thereof in hydrophobic polymer by using polyol, and to a method for preparing the polyol/polymer microcapsules.
摘要:
The present invention relates to a composition of skin external application comprising rose extracts and epigallocatechin gallate (EGCG) as effective ingredients, more particularly to a composition of skin external application that contains rose extracts and EGCG, thereby promoting the synthesis of collagen fiber to promote superior skin elasticity and skin wrinkle improvement with long-lasting effect.
摘要:
The present invention relates to a cosmetic composition for massage, and more particularly, to a cosmetic composition for massage that provides a smooth rolling sensation even with a low oil content by controlling the ratio and content of polar and nonpolar oils and properly penetrates into the skin according to the control of the absorption rate by using a gum, which solves the problems with the existing massage compositions such as greasiness caused by a high content of oily ingredients and inconvenience associated with a need for cleansing the skin after use.
摘要:
Disclosed herein is nanoemulsion prepared by emulsifying main metabolites of ginseng saponin obtained by conversion of glucose, i.e. compound K (20-O-β-D-glucopyranosyl-20(S)-protopanaxadiol), ginsenoside F1 (20-O-β-D-glucopyranosyl-20(S)-protopanaxatriol) and compound Y (20-O-[α-L-arabinopyranosyl(1→6)-β-D-glucopyranosyl]-20(S)-protopanaxadiol); and admixture thereof, in fine emulsion or liposome with dermotropic emulsifier by nano-emulsification; and having enhanced skin penetration, so to be effective in promoting proliferation of fibroblast and biosynthesis of collagen.
摘要:
A method of separating components of a gas mixture, the method comprising: passing the gas mixture through a benzoxazole-based polymer membrane at a temperature of from about 30° C. to about 400° C., wherein the benzoxazole-based polymer membrane is represented by the formula: as is defined herein.
摘要:
An organ type acceleration pedal assembly includes a pedal pad that connected to a floor panel below a driver seat by a hinge and swings within a predetermined rotation angle range to accelerate a vehicle. A linear bearing mounted at the center of the rear surface of the pedal pad in a longitudinal direction of the pedal pad moves linearly with the swing of the pedal pad. A pedal arm rotationally fixed to a mounting bracket formed on a dash panel below the driver seat has one end connected to the linear bearing by a hinge so as to move forward and backward with the linear movement of the linear bearing, and another end that adjusts the switching of a throttle valve with the forward and backward movement of the one end.
摘要:
Disclosed herein is a stabilization method of nano-sized emulsion by using lecithin and tocopheryl derivatives represented by the following formula (I) and (Wherein, R1, R2 and R3 are H or methyl group, and at least one position selected from the group consisting of the R1, R2 and R3 positions are methyl group; and, A is CH2—CH(CH3)— or CH═C(CH3)—) and an external application for skin containing the stabilized nano-sized emulsion.