11 results about "Hyperbranched polyglycerol" patented technology

The application discloses a kind of eluent and its preparation method and application, preparation method includes: adding potassium methoxide methanol solution to the trimethylolpropane in molten state, after stirring, vacuumizing, then droping glycidol monomer, after reaction, add methanol, dry, obtain hyperbranched polyglycerol ether;Add carbonyl imidazole to the N,N-dimethylformamide solution of saturated fatty acid, after stirring and mixing, drop to the N,N-dimethylformamide solution of hyperbranched polyglycerol ether, reaction is heated in nitrogen atmosphere, after reaction, the product is treated, obtain temperature-sensitive hyperbranched polyglycidol ether eluent.The eluent prepared in the application can greatly reduce the treatment cost of elution waste liquid while efficiently removing heavy metals.

This invention belongs to the field of metallurgical separation technology and relates to a method for separating and recovering tungsten and vanadium from a high-concentration molybdenum solution. The method includes: adding hydrogen peroxide solution to the liquid to be treated, heating to 60-80°C and maintaining the temperature for 30-60 minutes, then adjusting the pH to 2.5-3.5, and then adding an extractant for extraction to obtain a tungsten-vanadium-containing organic phase. The extractant consists of an amine extractant, tributyl phosphate, an ionic liquid, hyperbranched polyglycerol, and a diluent. The concentration of molybdenum in the liquid to be treated is not less than 150 g / L, the concentration of tungsten is 1-10 g / L, and the concentration of vanadium is 1-10 g / L. This invention aims to solve the technical problems of low efficiency and easy emulsification in the separation of tungsten and vanadium from high-concentration molybdenum solutions.

This invention discloses a low-VOC environmentally friendly interior wall coating composition and its preparation method in the field of architectural coatings technology. The method involves mixing deionized water, diethylenetriamine-terminated hyperbranched polyglycerol-grafted polypropylene glycol diglycidyl ether star copolymer, and polyether-modified polysiloxane. Titanium dioxide, calcined kaolin, heavy calcium carbonate, and talc are then added and ground to obtain a pigment and filler slurry. Next, styrene-acrylic emulsion, acrylic emulsion, and a mixture containing N-(diaminoethyl)-aminopropylmethyldimethoxysilane-modified glycidyl methacrylate-polyetheramine-epoxy soybean oil ring-opening copolymer and methyl isobutyl ketone are added. After stirring, the pH is adjusted to 8.0-9.5 using an associative polyurethane thickener and aminomethylpropanol. Polyether-modified polysiloxane and benzisothiazolinone are then added, followed by degassing to obtain the final product. This coating has extremely low volatile organic compound content and exhibits excellent formaldehyde removal, scrub resistance, and dispersion stability.

The present application belongs to the technical field of biomedical materials, and particularly relates to a Janus hydrogel coating agent, a preparation method and application thereof. The Janus hydrogel coating agent comprises hyperbranched polyglycerol and polyvinyl alcohol. The present application utilizes the differences in concentration, hydrophilicity and hydrophobicity and molecular chain movement of the two polymers to construct a Janus structure with different physical and chemical properties. The outer layer is a dense film structure, which can provide a physical barrier and mechanical strength, and at the same time resist external pathogenic bacteria. The internal skeleton is a porous network structure, which can realize partition loading and controlled release. In the treatment of skin diseases, the hydrogel coating agent can improve the skin environment and improve the treatment compliance, and has a good application prospect. At the same time, the preparation method is simple and does not need complex crosslinking.

The invention discloses a moisturizing microemulsion, a preparation method thereof and application of the moisturizing microemulsion in supercritical modification, and belongs to the technical field of dyeing and finishing. A modified small molecule oily moisturizing agent and hyperbranched polyglycerol fatty acid ester are compounded to prepare a compound emulsifier with a stable solubilizing effect; under the action of sugar alcohol, the moisturizing microemulsion which has a good solubilizing effect on a macromolecular water-based moisturizing agent in a supercritical system is obtained; the moisturizing microemulsion is used for carrying out supercritical modification treatment on fibers, and the obtained fibers are loaded with a micromolecular oily moisturizer and a macromolecular aqueous moisturizer at the same time, so that the moisturizing microemulsion has a very good moisturizing effect.

The invention discloses a far infrared radiation technology-based heating type high-speed rail bullet train bedding and a preparation method thereof, and relates to the technical field of high-speed rail bedding fabrics, the preparation method comprises the following steps: selecting raw materials, and mixing according to a weight ratio; raw materials comprise far infrared ceramic powder, graphene quantum dots, pumice powder, a silane coupling agent, aliphatic hyperbranched polyurethane and hyperbranched polyglycerol, and a mixed raw material system is formed; carrying out solution composite spinning on the mixed raw material to obtain far infrared heat storage filaments; the heat storage fabric is obtained by interweaving and weaving the far infrared heat storage filaments. The technical problem that in the prior art, a high-speed train bedding is poor in heat storage performance is solved.

The application provides a drug-loaded bottle-brush polymer of hyperbranched polyglycerol and a preparation method thereof, and relates to the technical field of bottle-brush polymers.The application utilizes Grubbs-III catalyst to perform water-phase ring-opening metathesis polymerization on a hyperbranched macromonomer to obtain a bottle-brush polymer; an excessive amount of the bottle-brush polymer is reacted to convert the hydroxyl groups in the bottle-brush polymer into carboxyl groups; and then, a grafting reaction is performed with paclitaxel to obtain the drug-loaded bottle-brush polymer of hyperbranched polyglycerol.The bottle-brush hPG synthesized by the application is a safe and efficient nanodrug carrier, and has great potential to replace expensive albumin.In addition, the bottle-brush hPG has a large number of -OH groups and excellent hydrophilicity, so that it becomes a multifunctional polymer platform coupled with other drugs or targeting molecules.

The invention belongs to the technical field of automobile chemicals, and particularly relates to bio-based environment-friendly windshield cleaning fluid. Comprising 10%-35% of hyperbranched polyglycerol functionalized by a hydrophobic group, 5%-25% of a bio-based eutectic solvent, 0.5%-5% of a composite bio-based surfactant, 0.1%-1.0% of a bio-based chelating agent, 0.05%-0.5% of a proteolytic enzyme preparation, 0.1%-0.5% of a pH buffer agent, 0.05%-0.2% of a preservative and the balance of deionized water. By the adoption of the technical scheme, efficient cleaning and low-temperature anti-freezing performance on complex dirt can be achieved, meanwhile, damage to materials such as rubber and paint surfaces is avoided, a complete bio-based source and high biodegradability are achieved, and environmental friendliness and material safety are remarkably improved.

The application discloses a preparation method of isotropic graphite material paste for a thorium-based molten salt reactor and belongs to the technical field of materials. The method comprises the following steps: S1, raw material selection: the additives comprise modified hyperbranched polyglycerol, bismaleimide-pyridine diamide bridging agent, zinc acetylacetonate and polyethylene glycol diacrylate; S2, dry powder preheating: the aggregate is preheated to 180 DEG C under nitrogen protection, the prepolymer and polyethylene glycol diacrylate are added, and dry mixing is carried out for 15 minutes; S3, first-time kneading: 70% of the total mass of bitumen is added, and kneading is carried out at a temperature of 110-130 DEG C for 30 minutes; S4, second-time kneading: the remaining 30% of the bitumen and the zinc acetylacetonate are added, the temperature is increased to 150-160 DEG C, and kneading is carried out for 40 minutes; and S5, paste cooling, crushing and collecting: the paste is transferred into a cooling and crushing pot, is ground into powder, is selected, and is batched. The application solves the problem of uneven mixing of the aggregate and the binder in the prior art.

The invention discloses a long-acting anti-pollution polyamide reverse osmosis membrane as well as a preparation method and application thereof, and belongs to the technical field of membrane separation. Comprising a porous supporting layer and a polyamide selection layer located on the surface of the porous supporting layer, monoamino terminal hyperbranched polyglycerol is covalently grafted in the polyamide selection layer, and the monoamino terminal hyperbranched polyglycerol reacts with acyl chloride monomers in the interfacial polymerization process through terminal primary amine groups of the monoamino terminal hyperbranched polyglycerol to be grafted in a polyamide network. The polyhydroxy branched structure of the hyperbranched polyglycerol is enriched towards the surface of the membrane, and a stable hydrophilic anti-pollution structure is formed on the surface of the membrane. According to the long-acting anti-pollution polyamide reverse osmosis membrane as well as the preparation method and the application thereof, the prepared membrane is long-acting and stable in anti-pollution performance, strong in hydrophilicity, simple in preparation process and easy to industrialize.

The invention relates to the field of coating preparation, in particular to adaptive environment-friendly putty-free coating and a preparation method thereof. The coating comprises a film-forming agent, nano silicon dioxide, a functional additive and deionized water, the film-forming agent comprises a hybrid emulsion and a supramolecular quadruple hydrogen bond monomer; the hybrid emulsion is formed by copolymerization of acrylate containing disulfide bonds and organic silicon; the functional additive comprises any one or more of hyperbranched polyglycerol ester, phosphorylated modified bamboo fiber nanocrystals and polyether modified silicone oil. A double-network interpenetrating structure is formed by the acrylic acid-organic silicon hybrid emulsion containing the disulfide bond and the supramolecular quadruple hydrogen bond monomer, the disulfide bond endows the coating with self-repairing ability, and the quadruple hydrogen bond improves the film-forming property and adhesive force of the coating. And nano silicon dioxide enhances hardness and alkali resistance. In the functional additive, hyperbranched polyglycerol ester improves the rheological property, phosphorylated bamboo fiber nanocrystals and silicon dioxide form multi-stage filling to improve the environmental protection property of the coating, and a defoaming system improves the uniformity of the coating.