45 results about "Synthetic polymer" patented technology

A fracturing fluid for fracturing subterranean formations comprising ascorbic acid. The fracturing fluid can use ascorbic acid to delay increases in viscosity until desired. The viscosity increase can then be maintained over a period of time to perform fracturing operations.

This invention relates to the field of Xuan paper production, specifically to a specialized modern papermaking machine for producing Xuan paper without synthetic polymers. The papermaking machine includes an interconnected pulp tank and headbox. Inside the headbox, a cylindrical wire cage with its lower part immersed in the pulp is rotatably mounted. As the cylindrical wire cage rotates, a loose, wet sheet is formed on the wire surface. An air compressor is located beside the pulp tank. A closed-loop long wire is located on one side of the cylindrical wire cage. The long wire is tangential to the outer wall of the cylindrical wire cage, forming a transfer bonding area. A peeling mechanism is provided in the transfer bonding area to transfer the wet sheet to the long wire. The peeling mechanism includes a peeling plate with a main air channel connected to the air compressor. One end of the peeling plate has a rubber cone plate with a peeling air channel, and the other end has a peeling water channel. A pressing mechanism is located at the upper end of the peeling plate. This invention enables continuous production of Xuan paper, fully preserving the core qualities of traditional Xuan paper. The wet sheet is transferred without damage or residue, exhibiting strong production stability and suitability for large-scale continuous production of Xuan paper.

The application belongs to the technical field of biological medicine and medical cosmetology, and particularly relates to a kind of composition for mitochondrial protection type cosmetology and skin repair based on hydrogel and application thereof, the composition comprises a mitochondrial protection system and a synergistic active ingredient, the mitochondrial protection system comprises a hydrogel and a mitochondrial protection solution, the hydrogel comprises a synthetic polymer, and the mitochondrial protection solution comprises 200-300 mM mannitol, 0.2-5 mM ATP and 0-5% w / v trehalose; the synergistic active ingredient comprises a mixture of one or more of 0.01-0.1% ascorbyl palmitate, 0.1-1 mM glutathione and 0.5-2% nicotinamide. The composition is applied to microneedle repair, ice needle patch preparation and mask preparation and other aspects; through microneedle repair, ice needle patch or mask and other forms, effective delivery of mitochondria is realized, all-round care and repair are provided for the skin, and the delivery capacity is improved.

Branched and crosslinked polymeric fluid loss control agents and methods are provided that have at least one acrylamide-based monomer, at least one sulfonated anionic monomer, and at least one crosslinking monomer. The at least one acrylamide-based monomer and the at least one sulfonated anionic monomer are crosslinked. The branched and crosslinked polymeric fluid loss control agents have between 50 and 99 mol % of the at least one acrylamide-based monomer, between 1 and 30 mol % of the at least one sulfonated anionic monomer, and between 0.1 and 10 mol % of the at least one crosslinking monomer.

The invention is in the field of secondary batteries. In particular, the present invention is directed to a method of manufacturing an electrode substrate and to an electrode substrate. There is provided a method of manufacturing an electrode substrate, comprising the steps of: i) providing an electrically conductive 3D current collector substrate comprising a plurality of electrically conductive upstanding protrusions, ii) depositing on the 3D current collector substrate a polymer layer having a thickness that progressively increases towards terminal ends of the upstanding protrusions, the step of depositing comprising: iia) exposing a first face of the 3D current collector to one or more organic monomers, one or more initiators, and optionally one or more crosslinkers, iib) applying a temperature gradient to the 3D current collector substrate with an increasing temperature towards terminal ends of the upstanding protrusions, iic) activating the initiator, thereby polymerizing the one or more monomers into a polymer layer.

The present invention relates to elastomer materials, and more precisely to an elastomer material blend of at least one polyisoprene polymer and at least one natural or synthetic polymer. The invention also relates to the method for preparing the blend and to the processing thereof by means of an electro-hydrodynamic process or an aero-hydrodynamic process, or to the combination of both processes.

The application provides a crosslinked thermal rearrangement polybenzoxazole hollow fiber gas separation membrane and a preparation method and application thereof, and belongs to the technical field of polymer membrane separation. In the synthesis of the polymer, a phenolphthalein-based diamine monomer with a lactone ring is introduced, so that the phenolphthalein-based diamine monomer is polycondensed with a dianhydride to form a polyimide, and then the polyimide is prepared into a hollow fiber membrane precursor, and then crosslinking is performed at a lower temperature, and then the temperature is further increased to prepare a thermal rearrangement hollow fiber membrane. At this time, the polymer chains are crosslinked, the flowability is hindered, the thickening degree of the skin layer is greatly reduced, and the plasticization resistance is also improved.

Systems and methods for recycling polymers. A method for recycling synthetic polymers by combining the polymers with a solid depolymerizing catalyst in a vessel, mechanically shearing the combined polymers and the solid depolymerizing catalyst against each other to produce monomers from the polymers; and collecting the monomers. The solid depolymerizing catalyst can be solid sodium hydroxide. Collecting the monomers can be achieved by contacting the sheared polymer and catalyst with a recyclable volatile solvent to dissolve the monomers. The method can include purifying the collected monomers for repolymerization. Purifying the monomers can be achieved using nanofiltration membrane technology, cyclic fixed bed adsorption, simulated moving-bed adsorption or a combination thereof.

Disclosed is a method for recycling of material residue from a material containing one or more synthetic polymer(s): providing one or more physical material identifier(s) and material data associated with ma-terial containing synthetic polymer(s); providing one or more receptable identifier(s) associated with a receptable for collecting the material residue from the material containing synthetic polymer(s); generating one or more recycling instruction(s) based on the receptable identifier(s) and the material data; providing the generated recycling instructions for recycling of the material residue. Disclosed are further methods, apparatuses, uses, computer programs and computer-readable media.

The application discloses a kind of essence microcapsules for candle and preparation method.The microcapsule includes capsule core and capsule wall, the capsule core is essence, and the capsule wall is formed by natural polymer material (such as gelatin, gum arabic) and synthetic polymer material (such as polyurea, polyamide) compound, and the essence content in capsule core is 20%-60% of the total weight of microcapsule.The preparation method is to prepare natural polymer solution and synthetic polymer solution respectively, add essence into natural polymer solution to obtain mixed solution, then drop synthetic polymer solution into mixed solution and stir to form emulsion, then adjust the pH value of emulsion to make capsule wall material polymerization to form microcapsule, and finally, after washing and drying, the finished product is obtained.The microcapsule of the application can effectively protect the essence, can accurately control the release speed of the essence, prolong the candle fragrance time, and the preparation process is simple, convenient to operate, easy to scale production, which provides a better solution for the application of candle essence, and has good application prospect in candle manufacturing field.

The present invention provides a group of compounds for the sequestration of Adeno-associated virus (AAV) and adenovirus (AdV) neutralizing antibodies (NAbs) in a patient. The compounds comprise an inert backbone conjugated with at least one recombinant peptide comprising an epitope. The epitope is a conserved epitope that is targeted by human anti-AAV or anti-AdV NAbs. The backbone where the conserved epitope is conjugated to is a poly-lysine (PLys) or poly-acrylamide (PAA) backbone, among others. Also provided is a pharmaceutical composition comprising this type of compounds, as well as a method for use to treat an individual to inhibit the immune reaction against an AAV or AdV-based therapy. It is also possible to use synthetic compounds for an in vitro detection of anti-AAV or anti-AdV NAbs in a sample.

The present invention provides a flame-retardant water-based paint composition that can form a coating with good flame retardancy on buildings and building materials. [Solution] The flame-retardant water-based paint composition contains (A) a water-based binder resin and (B) a non-halogen-based water-soluble synthetic polymer flame retardant. As (B) the non-halogen-based water-soluble synthetic polymer flame retardant, a thermally depolymerizable polymer having a structure to which a water-soluble functional group having a specific structure is attached, its alkali metal salt, or its alkaline earth metal salt can be suitably used. In particular, poly(methacrylic acid), its alkali metal salt, or its alkaline earth metal salt can be suitably used.

To provide a delayed-release softgel capsule that suppresses premature leakage. [Solution] A delayed-release softgel capsule is provided, comprising a filler material and a pH-dependent shell composition. In one embodiment, the pH-dependent shell composition comprises gelatin, pectin, dextrose, and about 0.5 wt% to about 10 wt% of a synthetic polymer. In an alternative embodiment, the pH-dependent shell composition comprises gelatin, pectin, dextrose, and an organic acid. The delayed-release properties of the capsule inhibit the premature release of the filler material at acidic pH (e.g., any pH between about 1.2 and about 6).

The present invention relates to an implant comprising at least one three-dimensional porous structural element of at least one synthetic polymer, wherein the at least one porous structural element is irreversibly attached to an implant element by means of at least one adhesive polymer, methods for preparing the same, and uses thereof.

Disclosed herein are dielectric polymers of formula Ithe variables of which are defined herein, as well as methods and compounds useful in the synthesis of the polymers and materials comprising and methods of using the polymers.

This invention discloses a manganese-mineralized full-component tumor vaccine, its preparation method, and its application. The invention first synthesizes a guanidine-containing cationic monomer and obtains a block copolymer of guanidine monomer / acrylic acid monomer via reversible addition-fragmentation chain transfer radical polymerization (RAFT). Phosphoric acid / phosphonic acid compounds are grafted using an EDC / NHS coupling reaction to prepare a polymer carrier. A full-component tumor antigen is prepared through repeated freeze-thaw cycles and ultrasonic lysis. The tumor antigen is loaded onto the synthesized polymer carrier and finally prepared as a full-component tumor vaccine after manganese surface mineralization treatment. In this invention, the guanidine-containing structure of the polymer carrier can capture the antigen and self-assemble into nanoparticles. Simultaneously, the phosphate / phosphonic acid groups can efficiently chelate manganese ions, providing mineralization sites and achieving the co-delivery of the full-component tumor antigen and manganese adjuvant.

Disclosed herein is a substrate comprising a functional group protected with a photo-labile group covalently attached to the substrate and a solvent film covering the substrate, wherein the thickness of the film is less than about 100 µm. Also disclosed herein are methods of making such substrates. Also disclosed are methods of synthesizing polymers, methods of synthesizing arrays of polymers, and methods of removing photo-labile protecting groups. These methods all employ solvent thin films to cover substrates, wherein the thickness of the film is less than 100 µm.

The present application relates to a kind of polymer composite microcarrier and its preparation method.It includes: microcarrier body, the microcarrier body includes synthetic polymer, the microcarrier body is hollow structure, the axial length of the microcarrier body is greater than the radial length of the microcarrier body;Functional area, the functional area is microporous structure, the functional area is formed on the microcarrier body, and the functional area includes natural macromolecule, or, the functional area includes natural macromolecule and inorganic salt.The polymer composite microcarrier of the present application can make cell adhere to the outer surface of hollow microcarrier, and the internal hollow structure can facilitate the flow of liquid, provide uniform, good microenvironment for large-scale expansion of cell, it is advantageous to improve the number of cell expansion.

A composite lithium iron phosphate material, a positive electrode using same, and a lithium-ion battery. Raw materials for preparing the composite lithium iron phosphate material comprise an iron phosphate precursor, a lithium source and a carbon source. The carbon source coats the iron phosphate precursor and the lithium source to form the composite lithium iron phosphate material. The carbon source comprises a synthetic polymer carbon source and a biomass carbon source; and the biomass carbon source comprises carbon fibers.

a kind of nC 60+ Fullerene meteorite-based radar and communication antenna technology solution, nC 60+ This approach utilizes focused ion beam electromagnetic field technology, which leverages shared ionic bonds and large π-bonded covalent bonds; micro / nano electronic grid resonant cavities formed by laser direct writing and sintering of large π-bonded electron clouds; and selective terahertz wave propagation technology using metal, semiconductor, and CMOS chips directly written onto micro / nano electronic grid resonant arrays and phased arrays. This scheme enables antennas to become superconducting tools for transmitting and receiving optical and electromagnetic waves. Applications include long-distance terahertz weak signal communication, radar, "black holes" and "light boxes" for optical and electromagnetic waves (such as terahertz wave absorption or submersion – used for stealth), imaging detection, sensitive wave identification, and selective sensing. 60+ Fullerene meteorite-like materials, including laboratory-produced nC60. + and having nC 60+ Mineral or synthetic polymer substitutes with a particular strength or complementarity.

This invention belongs to the field of medical device technology and relates to an absorbable cardiac occluder flow-blocking membrane and its preparation method. The flow-blocking membrane is a multilayer biodegradable polymer composite membrane structure, which sequentially includes: a first hydrophilic layer, a first transition layer, a dense layer, a second transition layer, and a second hydrophilic layer. The first hydrophilic layer, the first transition layer, the second transition layer, and the second hydrophilic layer are all loose and porous layered structures, while the dense layer is a dense layered structure. The first and second hydrophilic layers are made of natural polymers, the first and second transition layers are made of a mixture of natural and synthetic polymers, and the dense layer is made of synthetic polymers. This absorbable cardiac occluder flow-blocking membrane has good hydrophilicity, anti-inflammatory properties, and mechanical properties, which can effectively accelerate endothelialization and reduce post-implantation inflammatory responses, thus enabling its application in cardiac occluders.

This invention belongs to the field of sensor material technology and discloses a method for preparing an ion-piezoelectric self-powered flexible sensor. The specific method is as follows: First, quaternized gelatin is prepared; then, a quaternized gelatin / polyacrylic acid dual-network hydrogel is prepared, and an ionic liquid and an aminated cage-like polysilsesquioxane are introduced into it. Finally, the sensor is encapsulated to form a self-powered flexible sensor. This invention also discloses the ion-piezoelectric self-powered flexible sensor prepared according to the above method and its applications, solving the problems of existing ion-piezoelectric hydrogels, which mostly use synthetic polymers as matrix materials and have relatively limited functionality, insufficient biocompatibility, and poor degradation performance.

Cosmetic compositions include one or more pearlescent pigments; and a thickening system including at least one synthetic polymer and at least one thickening polysaccharide; wherein the composition is free of emulsifiers; wherein the one or more pearlescent pigments and the thickening system form a stable suspension. The cosmetic compositions are in the form of a low viscosity, emulsifier-free emulsion (with pearlescent pigments in suspension while maintaining unique rheology compatible with rollerball cartridges.

The present disclosure provides a two-phase liquid-gas fluid for hydraulic fracturing, including a liquid phase including a foaming surfactant and a branched synthetic polymer, wherein the polymer includes monomers selected from the group consisting of acrylamide, acrylic acid, methacrylic acid, 2-acrylamido-2-methylpropane sulfonic acid, and combinations thereof, and a gas phase comprising CO2, wherein the fluid maintains a viscosity of at least 70 cp after exposure to temperatures of 200°F to 300°F for at least 90 minutes. The foam fluid demonstrates thermal stability at high temperatures and maintains stable viscosity under high temperature and pressure conditions, making the fluid suitable for hydraulic fracturing applications in high-temperature reservoirs.

This invention discloses dehydroascorbic acid-modified hemoglobin-based Paris polyphylla saponin-targeted nanoparticles and their preparation method, belonging to the field of drug delivery system technology. These targeted nanoparticles use hemoglobin as a drug carrier and Paris polyphylla saponin VII as the core active ingredient. The process involves first synthesizing a DSPE-PEG-DHA polymer, then utilizing the property of Hb exposing its hydrophobic region under acidic conditions to encapsulate PSVII within Hb via a self-assembly method, and finally modifying it with DSPE-PEG-DHA to obtain the target nanoparticles PSHb@DPD. This invention significantly enhances the targeting and cellular uptake efficiency of nanoparticles by specifically binding DHA to glucose transporters highly expressed in osteosarcoma cells. It exhibits strong toxicity to osteosarcoma MG63 cells and effectively inhibits their migration, while showing no significant toxicity to normal vascular endothelial cells and excellent biocompatibility.