Abstract: The present invention relates to an ester-based plasticizer composition, a method for preparing the same and a resin composition comprising the same. The ester-based plasticizer composition according to one embodiment of the present invention is a novel terephthalate-based ester compound for a plasticizer prepared by transesterification. When the ester-based plasticizer composition used in a resin composition, it is capable of providing excellent properties such as migration resistance and volatility resistance as well as excellent resistance for stress, tensile strength and elongation rate.

Abstract: The present invention relates to an ester-based plasticizer composition, a method for preparing the same and a resin composition comprising the same. The ester-based plasticizer composition according to one embodiment of the present invention is a novel terephthalate-based ester compound for a plasticizer prepared through transesterification. When the ester-based plasticizer composition is used in a resin composition, it is capable of providing excellent resistance for stress, and excellent physical properties such as migration resistance and volatility resistance as well as tensile strength and elongation rate.

Abstract: The present invention relates to a plasticizer composition, a resin composition and a method for preparing thereof. The present invention can provide a plasticizer composition, which can improve properties required to the plasticizer composition contained in a vinyl chloride-based resin composition, such as plasticizing efficiency, volatile loss, and migration resistance, to a level equal to or better than the existing plasticizer composition, and a resin composition comprising thereof.

Abstract: Disclosed is an ester plasticizer composition, as a plasticizer composition, which comprises a hybrid alkyl-substituted terephthalate compound and a non-hybrid alkyl-substituted terephthalate compound as active ingredients, improves workability due to high absorption speed for the resins and short melting time, and thus may imparts a uniform foaming property upon being applied to wallpaper formulation.

Abstract: Provided are a plasticizer and a resin composition including the plasticizer, and a method of preparing the same. The plasticizer may improve physical properties, such as light resistance required for a compound formulation or viscosity, bleeding phenomenon, and gelling property required for a sheet formulation, when used as a plasticizer of a resin composition, by improving poor physical properties that have been ascribed to structural limitations although having environmental friendliness.

Abstract: Disclosed is a method for culturing mesenchymal stem cells, comprising culturing mesenchymal stem cells in a medium containing calcium in a concentration of from 2.1 to 3.8 mM and magnesium in a concentration of from 1.0 to 3.0 mM under a hypoxic condition of 2 to 5% oxygen. The culturing method can increase the population of mesenchymal stem cells even with a small number of passages by improving mesenchymal stem cells in proliferative capacity and viability. In addition, the mesenchymal stem cells prepared by the culturing method are effectively used not only as a safe cell therapeutic agent due to their lacking immunogenicity, but also as a cartilage regenerating medicine owing to their excellent secretion of cytokines.

Abstract: The present invention provides an ester compound of the following Formula 1, a plasticizer composition including the same and a resin composition including the plasticizer composition. In the above formula, R1 and R2 are different from each other and are independently at least one selected from the group consisting of C3-C10 alkyl of a non-branch type or including at least one branched chain, a substituted or unsubstituted alkyl aryl and a substituted or unsubstituted aryl. When the novel ester compound according to an embodiment of the present invention is used in a resin composition, eco-friendly property and good physical properties including plasticizing efficiency, tensile strength, elongation rate, migration loss, volatility resistance, etc. may be provided.

Abstract: Provided are a plasticizer composition and a resin composition, and a preparation method thereof, wherein the present invention may provide a plasticizer, which may improve physical properties, such as plasticizing efficiency, migration, tensile strength, elongation rate, stress resistance, and light resistance, required for a sheet formulation when used as a plasticizer of a resin composition, by improving poor physical properties that have been ascribed to structural limitations, and a resin composition including the plasticizer.

Abstract: Disclosed are a method for preparing an ester composition and a resin composition comprising the ester composition. It is possible to suitably prepare a plasticizer composition which improves processability due to high absorption rate and short fusion time to resins and thus provides superior physical properties when processed with resins.

Abstract: Disclosed is a method for culturing mesenchymal stem cells, comprising culturing mesenchymal stem cells in a medium containing calcium in a concentration of from 2.1 to 3.8 mM and magnesium in a concentration of from 1.0 to 3.0 mM under a hypoxic condition of 2 to 5% oxygen. The culturing method can increase the population of mesenchymal stem cells even with a small number of passages by improving mesenchymal stem cells in proliferative capacity and viability. In addition, the mesenchymal stem cells prepared by the culturing method are effectively used not only as a safe cell therapeutic agent due to their lacking immunogenicity, but also as a cartilage regenerating medicine owing to their excellent secretion of cytokines.

Abstract: The present invention relates to a novel ester-based compound, an ester-based composition including the same, a preparation method of the ester-based composition and a resin composition including the ester-based composition as a plasticizer. The ester-based composition according to an embodiment of the present invention is a composition including a novel isophthalate-based ester compound for a plasticizer prepared by a trans-esterification reaction and a composition including the same. A resin composition using the ester-based composition is eco-friendly and has good physical properties such as tensile strength, elongation rate, migration resistance, volatile resistance, etc.

Abstract: An ester composition including terephthalate compounds substituted with a non-hybrid and non-branched alkyl group, a hybrid and branched alkyl group, and a non-hybrid and branched alkyl group, respectively by 0.5 wt % to 9.5 wt %, by 14.5 wt % to 43.8 wt %, and 46.7 wt % to 85 wt % based on the total weight of the ester composition, a method of preparing the same, and a resin composition including the same are provided. The ester composition has a short absorption time with respect to the resin and short fusion time and improves the processability of the resin composition. In addition, good physical properties may be provided when manufacturing a sheet and a compound such as a cable, an interior of a car, a film, a sheet, a tube, a wallpaper, a toy, a flooring material, and the like.

Abstract: Disclosed are a plasticizer that, when used for a heat-resistant resin composition, improves elongation retention, enhances aging resistance and heat resistance, and exhibits superior tensile strength, tensile strength retention, heating loss or the like before and after heating, thus contributing to enhancement in physical properties of the heat-resistant resin, a plasticizer composition, a heat-resistant resin composition and a method for preparing the same.

Abstract: Provided are a plasticizer and a resin composition including the plasticizer, and a method of preparing the same. The plasticizer may improve physical properties, such as light resistance required for a compound formulation or viscosity, bleeding phenomenon, and gelling property required for a sheet formulation, when used as a plasticizer of a resin composition, by improving poor physical properties that have been ascribed to structural limitations although having environmental friendliness.

Abstract: Disclosed is a plasticizer composition which comprises an ester-based plasticizer and an ether compound and exhibits improved workability and heat loss in proportion to content of the ether compound.

Abstract: Disclosed are a method for preparing an ester plasticizer and an ester plasticizer prepared by the method. More specifically, disclosed are a method for preparing an ester plasticizer comprising trans-esterifying 100 parts by weight of dioctyl terephthalate with 0.1 to 89.9 parts by weight of butyl alcohol, and an ester plasticizer prepared by the method. Advantageously, provided are a novel method for preparing an ester plasticizer and an ester plasticizer with superior physical properties, prepared by the method.

Abstract: Disclosed is a plasticizer composition which comprises an ester-based plasticizer and an ether compound and exhibits improved workability and heat loss in proportion to content of the ether compound.

Abstract: Disclosed is an ester plasticizer composition, as a plasticizer composition, which comprises a hybrid alkyl-substituted terephthalate compound and a non-hybrid alkyl-substituted terephthalate compound as active ingredients, improves workability due to high absorption speed for the resins and short melting time, and thus may imparts a uniform foaming property upon being applied to wallpaper formulation.

Abstract: Disclosed is a method for culturing mesenchymal stem cells, comprising culturing mesenchymal stem cells in a medium containing calcium in a concentration of from 2.1 to 3.8 mM and magnesium in a concentration of from 1.0 to 3.0 mM under a hypoxic condition of 2 to 5% oxygen. The culturing method can increase the population of mesenchymal stem cells even with a small number of passages by improving mesenchymal stem cells in proliferative capacity and viability. In addition, the mesenchymal stem cells prepared by the culturing method are effectively used not only as a safe cell therapeutic agent due to their lacking immunogenicity, but also as a cartilage regenerating medicine owing to their excellent secretion of cytokines.

Abstract: Disclosed are a plasticizer that, when used for a heat-resistant resin composition, improves elongation retention, enhances aging resistance and heat resistance, and exhibits superior tensile strength, tensile strength retention, heating loss or the like before and after heating, thus contributing to enhancement in physical properties of the heat-resistant resin, a plasticizer composition, a heat-resistant resin composition and a method for preparing the same.