15 results about "Polymer engineering" patented technology

The instant disclosure is directed to polymer engineered forms of interferon- gamma (IFN-γ) cysteine mutein compounds, compositions comprising the compounds, and related methods and uses, for example, in the treatment of conditions responsive to therapy with IFN-γ.

The application discloses a nylon composition and a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics; the nylon composition provided by the application comprises the following components in parts by mass: 73-92 parts of PA12 resin, 3-22 parts of a toughening agent, 0.3-1.8 parts of lignosulfonate, and 0.1-1.2 parts of polyvinylpyrrolidone; the toughening agent comprises maleic anhydride grafted SEBS. The product prepared by the application has high light transmittance and excellent bending modulus and impact strength; meanwhile, the preparation method of the nylon composition is simple in operation and is beneficial to actual production.

This invention discloses a nanoparticle-reinforced nylon-based engineering plastic and its preparation method, belonging to the field of polymer engineering composite materials technology. The engineering plastic uses PA6 as a matrix, porous hollow ZnO nanoparticles prepared by PS template method as reinforcing fillers, supplemented with antioxidants, lubricants, and silane coupling agents, and is prepared through solvothermal reaction, calcination, acid activation, surface modification, and melt blending extrusion. This invention uses a PS microsphere template-assisted solvothermal-calcination process to prepare ZnO nanoparticles with internal cavities and abundant through-pores on the surface. After activation with dilute acetic acid and modification with KH-550, the problem of nanofiller agglomeration is effectively solved, achieving mechanical interlocking with the nylon matrix. The preparation process of this invention is controllable, and the resulting composite material, compared with pure PA6, exhibits significantly improved tensile strength and surface hardness, no significant decrease in elongation at break, and significantly optimized wear resistance. It possesses excellent overall performance and is suitable for high-end equipment structural components under high load and high friction conditions, showing promising prospects for industrial application.

The invention discloses an AS (acrylonitrile-styrene) composite material as well as a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The AS composite material provided by the invention is prepared from the following components in parts by mass: 58 to 82 parts of AS resin, 18 to 42 parts of glass fiber, 1 to 5 parts of charring agent, 0.8 to 3.2 parts of coupling agent and 0.3 to 2.2 parts of compatilizer, the charring agent comprises a pentaerythritol charring agent; the coupling agent comprises a titanate coupling agent containing a C4-C18 alkyl pyrophosphate acyloxy group; the compatilizer comprises an acrylate copolymer. The product prepared by the invention has excellent flame retardant property, flowability and mechanical property; therefore, the composite material can be widely applied to preparation of household appliances, automobile interior and exterior decorations and electronic and electrical devices. In addition, the preparation method of the AS composite material provided by the invention is simple to operate and beneficial to actual production.

The invention discloses a PC composite material and a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The PC composite material provided by the invention is prepared from the following components in parts by mass: 58 to 72 parts of PC, 5 to 22 parts of acrylonitrile-alpha-methyl styrene copolymer, 5 to 22 parts of general SAN resin, 5 to 22 parts of ABS high rubber powder, 1 to 8 parts of toughening agent, 1 to 6 parts of spraying additive and 0.2 to 1.2 parts of toner. The melt index of the PC under the test condition of 300 DEG C / 1.2 kg is greater than or equal to 15g / 10min; the toner comprises inorganic toner and organic toner. The product prepared by the invention has excellent paint spraying yield and heat resistance; therefore, the paint can be widely applied to preparation of paint-sprayed parts of automobile interior and exterior decorations. The preparation method of the PC composite material provided by the invention is simple to operate and beneficial to actual production.

The invention discloses a PET composite material as well as a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The PET composite material provided by the invention is prepared from the following components in parts by mass: 38 to 82 parts of first PET resin, 8 to 42 parts of carbon fibers, 0.5 to 6.5 parts of a toughening agent and 0.05 to 1.1 parts of a nucleating agent, on the basis of the mass of the carbon fiber, the surface of the carbon fiber contains 1-4% by mass of second PET resin; the nucleating agent comprises long-chain saturated linear carboxylate, and the number of carbon atoms in the long-chain saturated linear carboxylate is 22 to 28. The PET composite material provided by the invention has high modulus and also has excellent thermal stability and toughness. Meanwhile, the preparation method of the PET composite material provided by the invention is simple, and practical application is facilitated.

The application discloses a PBT composite material and a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics; the PBT composite material provided by the application comprises the following components in parts by mass: PBT resin 30-60 parts, flame retardant 10-30 parts, and plasticizer 0.2-1.2 parts. The PBT composite material provided by the application can significantly reduce the adhesion of material on a screw during the preparation process of a thin-wall product, thereby reducing the appearance frequency of black spots on the surface of the product, and obtaining a thin-wall product with low injection molding black spots; meanwhile, the obtained composite material still has excellent flame retardant performance when being prepared into a thin-wall product, and has good tensile strength and impact strength; and the preparation method provided by the application is simple and is beneficial to actual production.

The invention discloses a polycarbonate alloy as well as a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The polycarbonate alloy provided by the invention is prepared from the following components in parts by mass: 100 parts of polycarbonate, 18 to 42 parts of PBT (Polybutylene Terephthalate) resin, 1 to 6 parts of glass fiber and 0.3 to 2.2 parts of mica powder, the melt flow rate of the polycarbonate at 300 DEG C / 1.2 kg is greater than or equal to 5g / 10min; the melt flow rate of the PBT resin under the condition of 250 DEG C / 2.16 kg is 22 to 82 g / 10 min. The alloy prepared by the preparation method disclosed by the invention has good chemical resistance, relatively high stud strength and relatively excellent bending modulus and tensile strength; therefore, the method can be widely applied to preparation of automobile structural parts. In addition, the preparation method of the polycarbonate alloy provided by the invention is simple to operate and beneficial to actual production.

The invention discloses an AS (acrylonitrile-styrene) composite material as well as a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The AS composite material provided by the invention is prepared from the following components in parts by mass: 58 to 82 parts of AS resin, 18 to 42 parts of glass fiber, 2 to 8 parts of phenolic resin, 2 to 8 parts of glycidyl ester and 0.3 to 2.2 parts of compatilizer, the mass content of acrylonitrile in the AS resin is greater than or equal to 27%; the fluidity of the phenolic resin at the temperature of 125 DEG C is 22 to 52 mm; the compatilizer comprises an acrylate copolymer. The product prepared by the invention has excellent strength and modulus and relatively low specific gravity; therefore, the material can be widely applied to preparation of household appliances, automobile interior and exterior decorations and office equipment. In addition, the preparation method of the AS composite material provided by the invention is simple to operate and beneficial to actual production.

The application discloses a kind of flame-retardant polyolefin nonwoven fabric and its preparation method and application, belong to polymer engineering plastics technical field.The flame-retardant polyolefin nonwoven fabric provided in the application includes the following components by mass fraction: HDPE 60~85 parts, TPEE 5~10 parts, maleic anhydride grafting styrene 5~15 parts, modified aluminum hydroxide 2~6 parts, aluminum diethyl hypophosphite 6~16 parts, antimony trioxide 1~4 parts, the grafting rate of maleic anhydride grafting styrene is greater than or equal to 8%, modified aluminum hydroxide is core-shell structure, core layer is aluminum hydroxide, shell layer is cationic starch, the average particle size of modified aluminum hydroxide is greater than or equal to 0.5 μm and less than or equal to 10 μm.The flame-retardant polyolefin nonwoven fabric prepared in the application has excellent mechanical strength and good flame retardancy.And, the preparation method of the flame-retardant polyolefin nonwoven fabric provided in the application is simple to operate, which is beneficial to actual production.

The invention discloses a PC composite material and a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The PC / ABS alloy material is prepared from the following components in parts by weight: 58-100 parts of PC, 4-17 parts of ABS resin, 5-20 parts of phosphorus flame retardant, 0.8-11 parts of ethylene-vinyl acetate copolymer and 0.8-11 parts of acrylate silicone rubber. The PC at least comprises a first PC; the melt index of the first PC under the condition of 300 DEG C / 1.2 kg is less than or equal to 12 g / 10 min; in the ethylene-vinyl acetate copolymer, the mass content percentage of vinyl acetate is less than or equal to 28%. The product prepared by the preparation method disclosed by the invention has excellent chemical resistance and mechanical property on the basis of good flame retardance.

Conjugates of a CSF-1 moiety and one or more water soluble polymers are provided. Typically, the water soluble polymer is a poly(ethylene glycol) or a derivative thereof. Also provided are compositions comprising conjugates, methods of making conjugates, methods of using the conjugates or compositions in therapeutic treatments, methods of administering conjugates or compositions comprising the conjugates to a patient, and kits comprising conjugates.

A biodegradable polyester composition, and a preparation method therefor and the use thereof, belonging to the technical field of polymer engineering plastics. The biodegradable polyester composition comprises the following components in parts by mass: 13-88 parts of biodegradable polyester, 13-88 parts of starch, and 2-42 parts of polyhydric alcohol. The biodegradable polyester composition yields a product with a high transparency when subsequently used to prepare a film with a thickness of 12 μm or more. Moreover, the tensile strength, dart impact strength and heat-sealing performance are effectively enhanced.

The invention discloses a PC (polycarbonate) composition as well as a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The PC composition provided by the invention is prepared from the following components in parts by mass: 58 to 100 parts of PC, 1 to 12 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 5 to 20 parts of phosphorus flame retardant, 0.8 to 11 parts of ethylene-methyl acrylate copolymer, 0.8 to 11 parts of acrylate silicone rubber and 0.1 to 1 part of anti-dripping agent. The PC comprises silicon copolymerization type PC; the mass content of organic silicon in the acrylate silicone rubber is less than or equal to 80%. The product prepared by the preparation method disclosed by the invention has excellent chemical resistance and low-temperature toughness on the basis of good flame retardance.

The invention discloses a biodegradable composition as well as a preparation method and application thereof, and belongs to the technical field of polymer engineering plastics. The biodegradable composition provided by the invention is prepared from the following components in parts by mass: 48 to 72 parts of poly (butylene terephthalate)-adipate, 2 to 10 parts of polylactic acid, 18 to 42 parts of calcium carbonate, 1 to 9 parts of talcum powder and 0.3 to 1.2 parts of slipping agent, the calcium carbonate comprises first calcium carbonate and second calcium carbonate. The product prepared by the invention has excellent puncture performance and relatively low film blowing apparent density; therefore, the method can be widely applied to preparation of packaging bags. In addition, the preparation method of the biodegradable composition provided by the invention is simple to operate and beneficial to actual production.