15 results about "Synthetic copolymer" patented technology

The invention belongs to the field of underground engineering grouting material research, development and application, and provides a diffusion boundary controllable grouting material for underwater accumulation reinforcement and a preparation method thereof, the diffusion boundary controllable grouting material comprises the following raw materials by weight: 800-1000 parts of a material matrix component, 0-25 parts of a comprehensive admixture, 0-200 parts of instant sodium silicate, and 600-800 parts of water. The comprehensive admixture comprises an anti-dispersing agent and a water reducing agent; the anti-dispersing agent is mainly prepared from the following raw materials in parts by weight: 7 to 8 parts of high polymer, 9 to 10 parts of modified cellulose ether, 1 to 3 parts of natural polysaccharide and 1 to 2 parts of synthetic copolymer. The material has the advantages of being good in underwater dispersion resistance, controllable in setting time and easy to accumulate, and filling of an underwater goaf is facilitated.

The invention relates to a composite solid electrolyte membrane with high ionic conductivity as well as a preparation method and application thereof. The composite solid electrolyte membrane comprises a porous matrix membrane, composite solid electrolytes and a copolymer, wherein the surfaces and pores of the porous matrix membrane are filled with the composite solid electrolytes, and the copolymer forms a cross-linked network among the composite solid electrolytes; the porous matrix membrane comprises a matrix material, a plasticizer, a first lithium salt and a fluorocarbon surfactant; the composite solid electrolyte is of a core-shell structure, an inner core is a solid electrolyte, and an outer shell is a metal organic framework with pores adsorbing ionic liquid; the ionic liquid is synthesized from imidazole ionic liquid and second lithium salt; the copolymer is formed by initiating in-situ polymerization of an organic matter monomer and a cross-linking agent through an initiator. The composite solid-state electrolyte membrane and the solid-state battery are prepared through in-situ polymerization, and the composite solid-state electrolyte membrane with high ionic conductivity can improve the electrochemical window of the solid-state battery, reduce the surface resistance and improve the cycle performance.

The invention discloses antistatic medical gauze and a preparation method thereof. The antistatic medical gauze is formed by blending carbon nanotube graphene conductive fibers, medical chitosan fibers and functional synthetic fibers, the functional synthetic fiber is prepared from the following raw materials in parts by weight: 100 parts of a functional synthetic copolymer and 3-5 parts of (3, 6-diamino-9-acridinyl) boric acid, the functional synthetic copolymer comprises structural units introduced by the following monomers: 1-allyl-3-methylimidazole chloride, N-vinyl oxazolidinone, 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, 1, 2, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, the catalyst is 1, 3-bis (oxiranyl methyl)-5-(2-propenyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone. The gauze is good in antibacterial property, excellent in air permeability and antistatic property and long in service life.

The present invention relates to a copolymer according to Formula I comprising a plurality of ionic monomeric units and a plurality of one or more aldehyde monomeric units. In addition, the invention relates to a functionalized copolymer according to Formula III comprising a plurality of functionalized groups. Furthermore, the invention relates to a method of producing the copolymer using a radical polymerisation, preferably RAFT polymerisation, of one or more ionic monomers according to Formula A and one or more aldehyde monomers according to Formula B and an initiator, preferably a chain transfer agent (CTA), according to formula T1-T2. The invention also relates to a dynamically linked hydrogel comprising one or more (functionalized) copolymers and a crosslinking agent and a method of preparing such a hydrogel and a method of controlled degradation thereof, as well as to the use of the copolymer and the hydrogel and a scaffold prepared therewith.

The invention discloses a preparation method of a natural-synthetic copolymer saline-alkali soil modifier. The preparation method comprises the following steps: 1, preparing cotton straw biomass charcoal; 2, preparing a carboxymethyl cellulose free radical initiation system; 3, preparing a copolymer precursor mixed dispersion liquid; 4, preparing the natural-synthetic copolymer saline-alkali soil modifier; according to the invention, natural macromolecular carboxymethyl cellulose is adopted to modify an acrylic polymer, so that the acrylic polymer has good water absorption and salt tolerance; the biomass charcoal is added into a copolymer network, so that pores of the soil can be effectively improved, formation of soil aggregates can be promoted, and meanwhile, the content of organic matters in the soil can be increased; the method has the advantages of mild reaction conditions and green and environment-friendly materials, and can improve the physicochemical properties of the saline-alkali soil.

The invention discloses a hard-water-resistant alcohol-free fountain solution and a preparation method thereof. The formula of the fountain solution comprises PVA-g-AA copolymer water-soluble resin, a pH buffering agent, a polyhydric alcohol wetting agent, an alcohol ether wetting agent, a surfactant, an antibacterial agent, other additives and deionized water. The preparation method comprises the following steps: 1, synthesizing PVA-g-AA copolymer water-soluble resin; 2, preparing raw materials; step 3, premixing the raw materials; step 4, adding a functional auxiliary agent; according to the formula, PVA-g-AA copolymer water-soluble resin is adopted, the molecular weight and proportion of the resin are regulated and controlled by introducing an acrylic acid component, and the problem that the spreading rate of a water film is decreased due to winding of a resin molecular chain is solved; the water-soluble resin is compounded with a pH buffering agent, so that precipitation of hard water is inhibited, and long-acting pH stability is realized; in addition, the water-soluble resin can be in synergistic effect with the surfactant, so that stable control on the emulsification rate of the printing ink is realized.

The invention relates to a food freshness indicator strip based on a mesoporous coating and a preparation method of the food freshness indicator strip, and belongs to the technical field of food packaging. The PS-PLA copolymer is synthesized by adopting a two-step method of living free radical polymerization and ring-opening polymerization, the PS-PLA copolymer is used as a base material, and a regular mesoporous structure is prepared by selectively removing a PLA phase through alkaline solution etching. And adsorbing a bromocresol green indicator, and loading the bromocresol green indicator into the regular mesoporous structure to prepare the food freshness indicator strip. Volatile basic nitrogen released by the meat can change color of bromocresol green, so that indication of the freshness of the meat is realized.

The present invention relates to macromolecular blockers of non-specific interactions of an analyte and other components of the analytical system with the solid phase, which considerably decreases the non-specific interactions during the assay. The macromolecular blocker comprises synthetic copolymer or homopolymer, selected from the group comprising polyacrylamide, polymethacrylamide, polyacrylate, polymethacrylate, poly(N-(2-hydroxypropyl)methacrylamide), poly(2-oxazoline); to which at least one hydrophobically-active anchor is attached via a covalent bond, said hydrophobically-active anchor enabling suppression of non-specific interactions in immuno assays. The invention further relates to a method of preparing and to the use of said macromolecular blockers for capturing of specific antibodies or antigens or other molecules on the surface of the solid phase. The present invention enables to replace animal-derived proteins with a synthetic macromolecular blocker that is not only more effective in blocking activity itself, but it is also defined in its structure, has high batch-to-batch reproducibility, and does not need to be tested for the presence of viruses and other pathogens.

The application belongs to the field of underground engineering grouting material research and application, and provides a diffusion boundary controllable grouting material for underwater accumulation reinforcement and a preparation method thereof, which is composed of the following raw materials by weight: material matrix component 800-1000 parts, comprehensive additive 0-25 parts, instant sodium silicate 0-200 parts, and water 600-800 parts. The comprehensive additive comprises an anti-dispersion agent and a water reducing agent; the anti-dispersion agent is mainly composed of the following raw materials by weight: high polymer 7-8 parts, modified cellulose ether 9-10 parts, natural polysaccharide 1-3 parts, and synthetic copolymer 1-2 parts. The material has the advantages of good underwater anti-dispersion capacity, controllable setting time and easy accumulation, and is conducive to realizing the filling of the underwater goaf.

The invention discloses an antifouling and anti-fingerprint coating as well as a preparation method and application thereof, the preparation method comprises the following steps: S01, preparing the coating: mixing 30-50 wt% of acrylic resin, 0.3-3 wt% of monohydroxy-terminated polydimethylsiloxane PDMS with the molecular weight of 1500-2000 Da, 3-10 wt% of melamine, 10-12 wt% of ethylene glycol monobutyl ether, 20-30 wt% of n-butyl alcohol, 3-6 wt% of epoxy resin and auxiliaries, and mechanically stirring for 30-60 minutes at 25-30 DEG C; and S02, PDMS grafting pre-reaction: carrying out ultrasonic treatment on the coating at 50-70 DEG C for 1-3 hours, so that PDMS is grafted onto the acrylic resin. According to the preparation method provided by the invention, effective grafting of the low-surface-energy PDMS in the resin is realized without pre-synthesis of a copolymer or pretreatment of a base material through an ultrasonic-assisted grafting technology; the prepared coating does not contain fluorine, is environment-friendly, has excellent antifouling property, fingerprint resistance, high transparency and good adhesive force and durability, is suitable for various base materials such as stainless steel and glass, is simple in process and is suitable for large-scale production.

This invention discloses a method for preparing a natural-synthetic copolymer saline-alkali soil conditioner, comprising the following steps: Step 1: Preparation of cotton straw biochar; Step 2: Preparation of a carboxymethyl cellulose free radical initiation system; Step 3: Preparation of a copolymer precursor mixed dispersion; Step 4: Preparation of the natural-synthetic copolymer saline-alkali soil conditioner. This invention uses natural macromolecular carboxymethyl cellulose to modify acrylic polymers, giving them good water absorption and salt resistance. Adding biochar to the copolymer network effectively improves soil porosity and promotes the formation of soil aggregates, while also increasing soil organic matter content. The method of this invention uses mild reaction conditions and environmentally friendly materials, achieving the improvement of the physical and chemical properties of saline-alkali soil.

An antistatic medical gauze and a preparation method thereof are blended by carbon nanotube graphene conductive fiber, medical chitosan fiber and functional synthetic fiber; the functional synthetic fiber is made of the following raw materials by weight: 100 parts of functional synthetic copolymer, 3-5 parts of (3,6-diamino-9-acridinyl) boric acid; the functional synthetic copolymer includes structural units introduced by the following monomers: 1-allyl-3-methylimidazole chloride, N-vinyl oxazolidinone, 3-[N,N-dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]ammonium]propane-1-sulfonic acid inner salt, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione. The gauze has good antibacterial property, excellent air permeability and antistatic property, and long service life.

Bioactive synthetic copolymers having a poly(norbornene) backbone comprising one or more repeating units represented by general formula (I) and one or more repeating units represented by general formula (II) are provided. Also provided are bioactive polymers, materials comprising the bioactive synthetic copolymers, methods for preparing the bioactive synthetic copolymers, and methods for preparing the bioactive polymers. JPEG2023554220000044.jpg79158

The invention belongs to the technical field of industrial coatings, and particularly relates to an environment-friendly silicon resin hybrid composite emulsion and a preparation method thereof, and the preparation method comprises the following steps: synthesis of hydroxyl butenelactone, synthesis of alkoxy butenelactone, synthesis of a copolymer emulsion, preparation of a dropwise added mixed solution, and preparation of the silicon resin hybrid composite emulsion. The problem of high VOC content of the existing high-temperature-resistant silicon resin emulsion is solved, high solid content and excellent high-temperature resistance of the silicon resin emulsion can be realized, and the application requirements of environment-friendly high-temperature-resistant water-based paint are met.

The present invention relates to macromolecular blockers of non-specific interactions of an analyte and other components of the analytical system with the solid phase, which considerably decreases the non-specific interactions during the assay. The macromolecular blocker comprises synthetic copolymer or homopolymer, selected from the group comprising polyacrylamide, polymethacrylamide, polyacrylate, polymethacrylate, poly(N-(2- hydroxypropyl)methacrylamide), poly(2-oxazoline); to which at least one hydrophobically-active anchor is attached via a covalent bond, said hydrophobically-active anchor enabling suppression of non-specific interactions in immuno assays. The invention further relates to a method of preparing and to the use of said macromolecular blockers for capturing of specific antibodies or antigens or other molecules on the surface of the solid phase. The present invention enables to replace animal-derived proteins with a synthetic macromolecular blocker that is not only more effective in blocking activity itself, but it is also defined in its structure, has high batch-to-batch reproducibility, and does not need to be tested for the presence of viruses and other pathogens.