Abstract: A propylene polymer-based composite film, a preparation method therefor, and an application thereof are provided. The composite film contains at least two different layers: layer a and layer b layer. Layer a and layer b each contains at least one propylene polymer, and at least one of layer a and layer b contains a propylene impact copolymer. The propylene impact copolymer contains elastic moieties that form dispersed strip-like rubber phases in the composite film. The rubber phases are arranged parallel to each other. The average dimension of transverse axes of the rubber phases is 20-200 nm and the average of aspect ratios is 5-20. The composite film is can be used in the field of packaging materials, especially in battery packaging materials, electronic product packaging materials, or food packaging materials.

Abstract: Carbobicyclic nucleoside compounds useful for the treatment of coronavirus disease 2019 (COVID-19), RSV and other viral infections are provided. The carbobicyclic nucleoside compound may be a compound as set forth herein. Pharmaceutical formulations useful for treatment of COVID-19 and RSV are also described.

Abstract: A method for preparing a polyolefin resin powder has the steps of a) heat dissolving a polyolefin resin in an organic solvent having a solubility parameter less than or equal to the solubility parameter of the polyolefin resin to obtain a polyolefin resin solution; b) cooling the polyolefin resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain a polyolefin resin powder suitable for selective laser sintering. The difference between the solubility parameters of the organic solvent and of the polyolefin resin is within 0-20% of the solubility parameter of the polyolefin resin. The polyolefin resin powder obtained according to this method has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution.

Abstract: A method for preparing an aliphatic polyester resin powder includes the steps of a) heat dissolving a crystalline aliphatic polyester resin in an organic solvent to obtain an aliphatic polyester resin solution; b) cooling the aliphatic polyester resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain an aliphatic polyester resin powder suitable for selective laser sintering. The crystalline aliphatic polyester resin powder obtained has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution. The aliphatic polyester resin powder is particularly suitable for selective laser sintering method.

Abstract: A method for preparing a polyolefin resin powder has the steps of a) heat dissolving a polyolefin resin in an organic solvent having a solubility parameter less than or equal to the solubility parameter of the polyolefin resin to obtain a polyolefin resin solution; b) cooling the polyolefin resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain a polyolefin resin powder suitable for selective laser sintering. The difference between the solubility parameters of the organic solvent and of the polyolefin resin is within 0-20% of the solubility parameter of the polyolefin resin. The polyolefin resin powder obtained according to this method has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution.

Abstract: A method for preparing an aliphatic polyester resin powder includes the steps of a) heat dissolving a crystalline aliphatic polyester resin in an organic solvent to obtain an aliphatic polyester resin solution; b) cooling the aliphatic polyester resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain an aliphatic polyester resin powder suitable for selective laser sintering. The crystalline aliphatic polyester resin powder obtained has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution. The aliphatic polyester resin powder is particularly suitable for selective laser sintering method.

Abstract: A polyethylene composition comprising an ethylene/?-olefin copolymerized linear low density polyethylene, wherein the polyethylene composition has a Mw of from 100,000 g/mol to 200,000 g/mol, a Mw/Mn of from 4.0 to 9.0, a Mz/Mw of from 4.0 to 7.0, and a Mz+1/Mw of from 4.5 to 13.5, is provided. A film formed of the polyethylene composition is also provided.

Abstract: A polyethylene composition comprising an ethylene/?-olefin copolymerized linear low density polyethylene, wherein the polyethylene composition has a Mw of from 100,000 g/mol to 200,000 g/mol, a Mw/Mn of from 4.0 to 9.0, a Mz/Mw of from 4.0 to 7.0, and a Mz+1/Mw of from 4.5 to 13.5, is provided. A film formed of the polyethylene composition is also provided.

Abstract: This invention is accomplished by producing an effective composition for enteric coated medicine of mistletoe extract C) containing lectin and producing an effective composition for enteric coated microcapsule which has lectin as a major ingredient. The problem with oral administration due to unstability in the digestive system was solved and it enhanced drug efficiency, medical cure effectiveness contributing to medical industry.