Abstract: The present invention relates to a branched copolymer having a polyimide polymer block bonded to each terminal of a branched polyamide functional group, and a photosensitive resin composition including the same, a photosensitive resin film, and an optical device.

Abstract: Proposed is a polyolefin resin having excellent processability, toughness, and bubble stability, thereby being useful for molding into shrinkage films, agricultural films, etc. A method of preparing the same polyolefin resin is also proposed.

Abstract: The present disclosure relates to a linear low-density polyethylene copolymer and a preparation method thereof. The linear low-density polyethylene copolymer has a long-chain branching (LCB) distribution similar to that of general metallocene polyethylene (mPE) and has good mechanical properties such as processability and toughness. Thus, the linear low-density polyethylene copolymer is useful for molding into shrinkage films, agricultural films, etc.

Abstract: Disclosed are a polyolefin resin composition and a production method using same. The polyolefin resin satisfies the following conditions: (1) melt index (MI2.16, 190° C., under a load of 2.16 kg) is 0.1 to 1.5 g/10 min; (2) density is 0.91 to 0.93 g/cc; (3) polydispersity Index (Mw (weight-average molecular weight)/Mn (number-average molecular weight)) is 3 to 7; (4) Mz (Z-average molecular weight)/Mw (weight-average molecular weight) is 2.3 to 4.5; and (5) COI(Comonomer Orthogonal Index) value calculated by Equation 1 in the specification is 5 to 12. In Equation 1, “SCB number at Mz” represents average number of branches derived from comonomers per 1000 carbon atoms at Z-average molecular weight (Mz), and “SCB number at Mn” represents average number of branches derived from comonomers per 1000 carbon atoms at number-average molecular weight (Mn) based on a molecular weight-comonomer distribution graph.

Abstract: The present invention relates to a composition for promoting hair growth, and alleviating and treating hair loss, comprising substance P (SP) as an active ingredient. More specifically, the present invention relates to a pharmaceutical composition, which comprises substance P, for promoting hair growth, and preventing or treating hair loss and a cosmetic composition, which comprises substance P, for promoting hair or alleviating hair loss by increasing the activity of hair follicle cells, maintaining the growth phase of hair follicles, and inhibiting the progression into the regression phase. The composition of the present invention, which comprises substance P, an antioxidant, a surfactant, and a thickening agent, can be used for application to medicines, cosmetics, etc., for promoting hair growth, and alleviating and treating hair loss.

Abstract: The present disclosure relates to a linear low-density polyethylene copolymer and a preparation method thereof. The linear low-density polyethylene copolymer has a long-chain branching (LCB) distribution similar to that of general metallocene polyethylene (mPE) and has good mechanical properties such as processability and toughness. Thus, the linear low-density polyethylene copolymer is useful for molding into shrinkage films, agricultural films, etc.

Abstract: A catalyst composition for polymerizing a polyolefin having excellent processability and impact strength, a process for producing a polyolefin and a polyolefin resin thereof are disclosed. The catalyst composition comprises at least one first organometallic compound of following formula 1; at least one second organometallic compound of following formula 2; and aluminoxane. The polyolefin resin satisfies following properties (i) to (iv) and (vi), (i) melt flow index (ASTM D1238), measured at 190° C., under a load of 2.16 kg: 0.1 to 1.5 g/10 min, (ii) density: 910 to 930 kg/m3, (iii) the ratio (Mw/Mn), as measured by gel permeation chromatography (GPC): 3.0 to 7.0, (iv) the ratio (Mz/Mw), as measured by GPC: 2.2 to 4.5, and (vi) when the TREF curve of multimodal distribution is deconvoluted, the area of TREF curve having a peak at 50 to 74° C. is 40 to 75% of the total area of the TREF curve.

Abstract: Provided are a composition for improving skin wrinkles or inflammation, the composition including substance P as an active ingredient, more particularly, novel use of a composition including substance P which promotes collagen synthesis, inhibits collagenase production, and performs anti-inflammatory responses to improve skin wrinkles or inflammation, and a cosmetic composition for improving skin wrinkles or inflammation including the composition. The composition of the present invention, which includes substance P, exhibits higher effects of improving skin wrinkle or inflammation than substance P alone, due to a synergistic effect of an antioxidant, a surfactant, and a thickener which are added for stability of substance P, together with basic characteristics of substance P which is known to have effects of improving skin wrinkles or inflammation. Accordingly, the composition of the present invention may be usefully applied to a cosmetic composition for improving skin wrinkles or inflammation.

Abstract: Disclosed are a polyolefin resin composition and a production method using same. The polyolefin resin satisfies the following conditions: (1) melt index (MI2.16, 190° C., under a load of 2.16 kg) is 0.1 to 1.5 g/10 min; (2) density is 0.91 to 0.93 g/cc; (3) polydispersity Index (Mw (weight-average molecular weight)/Mn (number-average molecular weight)) is 3 to 7; (4) Mz (Z-average molecular weight)/Mw (weight-average molecular weight) is 2.3 to 4.5; and (5) COI (Comonomer Orthogonal Index) value calculated by Equation 1 in the specification is 5 to 12. In Equation 1, “SCB number at Mz” represents average number of branches derived from comonomers per 1000 carbon atoms at Z-average molecular weight (Mz), and “SCB number at Mn” represents average number of branches derived from comonomers per 1000 carbon atoms at number-average molecular weight (Mn) based on a molecular weight-comonomer distribution graph.

Abstract: A catalyst composition for polymerizing a polyolefin having excellent processability and impact strength, a process for producing a polyolefin and a polyolefin resin thereof are disclosed. The catalyst composition comprises at least one first organometallic compound of following formula 1; at least one second organometallic compound of following formula 2; and aluminoxane. The polyolefin resin satisfies following properties (i) to (iv) and (vi), (i) melt flow index (ASTM D1238), measured at 190° C., under a load of 2.16 kg: 0.1 to 1.5 g/10 min, (ii) density: 910 to 930 kg/m3, (iii) the ratio (Mw/Mn), as measured by gel permeation chromatography (GPC):3.0 to 7.0, (iv) the ratio (Mz/Mw), as measured by GPC: 2.2 to 4.5, and (vi) when the TREF curve of multimodal distribution is deconvoluted, the area of TREF curve having a peak at 50 to 74° C. is 40 to 75% of the total area of the TREF curve.

Abstract: The present invention relates to a branched copolymer having a polyimide polymer block bonded to each terminal of a branched polyamide functional group, and a photosensitive resin composition including the same, a photosensitive resin film, and an optical device.

Abstract: Provided are a pharmaceutical composition for wound healing including a surfactant, an antioxidant, a thickener, and SP, a method of treating a wound including administering the pharmaceutical composition to a subject, and a quasi-drug composition for wound healing including a surfactant, an antioxidant, a thickener, and substance. The pharmaceutical composition of the present invention reduces a wound size, generates new blood vessels, shows dermal and epidermal regeneration effects, matures granulation tissues, and synthesizes collagen, and thus may be used for wound healing.

Abstract: The present invention provides an antimicrobial peptide polymer comprising at least one monomer which is digested by pepsin, a multimeric antimicrobial peptide complex comprising the polymer and a cell surface anchoring motif linked to the polymer, an antimicrobial microorganism displaying the multimeric antimicrobial peptide complex, an antimicrobial composition comprising the same, a method of treating an infectious disease caused by bacteria, yeast or fungi by administering the antimicrobial composition, and a method for producing the antimicrobial microorganism. According to the invention, living microorganisms displaying an antimicrobial peptide on the cell surface thereof may be administered in vivo without having to lyse the microbial cell and isolate and purify the antimicrobial peptide, so that the antimicrobial peptide exhibits antimicrobial activity. Thus, the antimicrobial peptide may be produced at significantly reduced costs so that it may have widespread use.

Abstract: Provided are a pharmaceutical composition for wound healing including a surfactant, an antioxidant, a thickener, and SP, a method of treating a wound including administering the pharmaceutical composition to a subject, and a quasi-drug composition for wound healing including a surfactant, an antioxidant, a thickener, and substance. The pharmaceutical composition of the present invention reduces a wound size, generates new blood vessels, shows dermal and epidermal regeneration effects, matures granulation tissues, and synthesizes collagen, and thus may be used for wound healing.

Abstract: A metallocene catalyst composition for preparing multimodal polyolefin resin which has superior moldability, mechanical strength, appearance and so on, and a polymerization method using the same are disclosed. The catalyst composition comprises (i) at least one first metallocene compound represented by Formula 1 in the description part: (ii) at least one second metallocene compound represented by Formula 2 in the description of the Specification: and a co-catalyst.

Abstract: The present invention provides an antimicrobial peptide polymer comprising at least one monomer which is digested by pepsin, a multimeric antimicrobial peptide complex comprising the polymer and a cell surface anchoring motif linked to the polymer, an antimicrobial microorganism displaying the multimeric antimicrobial peptide complex, an antimicrobial composition comprising the same, a method of treating an infectious disease caused by bacteria, yeast or fungi by administering the antimicrobial composition, and a method for producing the antimicrobial microorganism. According to the invention, living microorganisms displaying an antimicrobial peptide on the cell surface thereof may be administered in vivo without having to lyse the microbial cell and isolate and purify the antimicrobial peptide, so that the antimicrobial peptide exhibits antimicrobial activity. Thus, the antimicrobial peptide may be produced at significantly reduced costs so that it may have widespread use.

Abstract: A metallocene catalyst composition for preparing multimodal polyolefin resin which has superior moldability, mechanical strength, appearance and so on, and a polymerization method using the same are disclosed. The catalyst composition comprises (i) at least one first metallocene compound represented by Formula 1 in the description part: (ii) at least one second metallocene compound represented by Formula 2 in the description of the Specification: and a co-catalyst.

Abstract: The present invention relates a prophylactic or therapeutic composition for cancer, and more particularly, to a prophylactic or therapeutic composition for cancer comprising a peptide which is represented by an amino acid sequence of the following Formula (I), a method for preventing or treating cancer comprising the step of administering the peptide to a subject, and use of the peptide in the preparation of the prophylactic or therapeutic composition for cancer. (I) APKAMX1LLX2X3L-LX4LQKKGI wherein X1, X2, X3 and X4 are each independently R or K.

Abstract: Disclosed are novel antimicrobial peptides which can promote the regeneration of skin cells, thus healing wounds. Pharmaceutical compositions comprising the peptides as active ingredients are also provided for wound healing and skin rejuvenation. The antimicrobial peptides exhibit inhibitory activity against antibiotic-resistant strains, and their antimicrobial activity is maintained without loss of structural stability even under a high salt condition. Also, being proven to promote the migration and regeneration of skin cells in mice as well as in vitro, the antimicrobial peptides may be widely used as an agent for regenerating skin cells. Further, they can find applications in various fields including the medical industry and the cosmetic industry. Hence, the novel antimicrobial peptides are anticipated to have considerable repercussions in the market for antibiotics, wound healing agents and cosmetics.

Abstract: The present invention provides an antimicrobial peptide polymer comprising at least one monomer which is digested by pepsin, a multimeric antimicrobial peptide complex comprising the polymer and a cell surface anchoring motif linked to the polymer, an antimicrobial microorganism displaying the multimeric antimicrobial peptide complex, an antimicrobial composition comprising the same, a method of treating an infectious disease caused by bacteria, yeast or fungi by administering the antimicrobial composition, and a method for producing the antimicrobial microorganism. According to the invention, living microorganisms displaying an antimicrobial peptide on the cell surface thereof may be administered in vivo without having to lyse the microbial cell and isolate and purify the antimicrobial peptide, so that the antimicrobial peptide exhibits antimicrobial activity. Thus, the antimicrobial peptide may be produced at significantly reduced costs so that it may have widespread use.