23results about "Dextran adhesives" patented technology

The invention relates to the technical field of lithium batteries, in particular to a composite binder aqueous solution, a silicon-based negative pole piece and a preparation method and application of the silicon-based negative pole piece. The preparation method of the composite binder aqueous solution comprises the following steps: dissolving a water-based polymer binder and a micromolecular physical crosslinking agent in water, adding pyrrole, stirring, adding an initiator, and mixing to obtain the composite binder aqueous solution. A small molecule physical cross-linking agent is introduced into the water-based polymer binder, and a large number of hydrogen bond binding sites are increased, so that the mechanical property of the binder is remarkably enhanced, and the machinability of the pole piece is further improved. Meanwhile, polypyrrole can be generated in the binder through in-situ polymerization, and the polypyrrole can be tightly coated on the surfaces of the silicon particles through strong interaction between the binder and the silicon particles to form a stable conductive network, so that the charge transfer capability of the electrode is remarkably improved. In addition, the composite binder is also beneficial to formation of a solid electrolyte layer rich in Li-N and participates in formation of a solid electrolyte interface layer, so that the lithium ion transmission capability of the composite binder is further improved.

The invention discloses a vegetable protein-based bamboo and wood adhesive, a preparation method thereof and application of the vegetable protein-based bamboo and wood adhesive in a thin shaving board. The vegetable protein-based bamboo and wood adhesive is prepared from the following raw materials: cake meal isolated protein, a silane coupling agent and a composite modifier, the composite modifier is prepared from the following raw materials: pullulan modified with aldehyde groups and a compound modified with boric acid ester bonds; the compound modified with the boric acid ester bond is prepared from the following raw materials: ellagic acid and 4-hydroxymethyl phenylboronic acid. According to the vegetable protein-based bamboo wood adhesive provided by the invention, the flame retardant property is improved.

The invention provides a method for preparing a binder precursor, the method comprising the steps of: i) mixing (A) fungi or glucan and (B) starch with an alkaline agent in the presence of an aqueous solvent system to form an alkaline composition; ii) mixing the alkaline composition with an acidic agent to form a mixture; and iii) drying the mixture and forming a powder therefrom, so as to form a powdered binder precursor.

The invention relates to the technical field of adhesives, in particular to child picture book environment-friendly glue based on natural plant extracts and a preparation method and application of the child picture book environment-friendly glue. The loofah sponge facial mask is prepared from the following components in parts by weight: 10 to 15 parts of loofah sponge extract, 45 to 55 parts of dynamic network base liquid, 0.5 to 1.5 parts of xanthan gum, 1.2 to 2.3 parts of nano cellulose, 0.3 to 0.6 part of methyl cellulose, 2 to 4 parts of aloe vera gel, 1 to 2 parts of glycerol, 2 to 4 parts of sorbitol and 0.3 to 0.7 part of rosemary extract, wherein the dynamic network base solution is obtained by mixing oxidized konjac glucomannan, silk fibroin, tannic acid and ferric chloride. A dynamic multi-cross-linked network design is adopted, dynamic covalent bonds are formed through oxidized konjac glucomannan and silk fibroin, and a three-dimensional network with the synergistic effect of the dynamic covalent bonds and coordination bonds is constructed by combining tannic acid-Fe coordination complexation.

The invention relates to a preparation method of a binder, the binder, a pole piece and a battery, and the preparation method of the binder comprises the following steps: S1, adding xanthan gum into a solvent, and stirring to obtain a xanthan gum solution; s2, adding a basic catalyst into the xanthan gum solution, stirring, adding isocapryloyl chloride, and carrying out a polymerization reaction under a reflux condition to obtain a copolymer; and S3, neutralizing the copolymer by using an acid solution, filtering, washing and drying to obtain the binder. Therefore, when the prepared binder is applied to positive and negative slurry, the suspension stability and uniformity of the slurry can be remarkably improved, so that the resistance of a pole piece prepared from the slurry can be reduced, the peel strength of the pole piece can be improved, and the dynamic performance of a finally prepared battery can be improved.

The present invention relates to a novel stable colloidal polysaccharide suspension containing α(1→3)-glucan, a cost-effective method for its preparation, and possible uses of these polysaccharide suspensions.

The present invention relates to the technical field of adhesives, and in particular to an environmentally friendly glue for children's picture books based on natural plant extracts, and a preparation method and application thereof. The glue comprises the following components: 10-15 parts by weight of loofah extract, 45-55 parts by weight of dynamic network base liquid, 0.5-1.5 parts by weight of xanthan gum, 1.2-2.3 parts by weight of nanocellulose, 0.3-0.6 parts by weight of methylcellulose, 2-4 parts by weight of aloe vera gel, 1-2 parts by weight of glycerol, 2-4 parts by weight of sorbitol, and 0.3-0.7 parts by weight of rosemary extract; wherein the dynamic network base liquid is obtained by mixing oxidized konjac glucomannan, silk fibroin, tannic acid, and ferric chloride. The present invention adopts a dynamic multiple cross-linked network design, forms a dynamic covalent bond by oxidizing konjac glucomannan and silk fibroin, combines tannic acid-Fe³⁺ coordination complexation, and constructs a three-dimensional network with a synergistic effect of dynamic covalent bonds and coordination bonds.

The invention relates to the technical field of medical materials, in particular to hydrogel for biological tissue bonding and a preparation method and application thereof. The hydrogel for biological tissue adhesion comprises a first component, a second component, a third component and a fourth component, the first component and the second component form electrostatic interaction, and the third component and the fourth component form a covalent cross-linked structure; the first component, the second component, the third component and the fourth component are all biocompatible components. The hydrogel for biological tissue adhesion provided by the invention has excellent biocompatibility, relatively high adhesion strength and relatively low swelling property.

The present invention provides a degradable adhesive and a preparation method thereof. The preparation method of the degradable adhesive of the present invention, by introducing the hydrogen bonding between the hydroxyl group and the amino group on the oxidized corn starch and the oxidized waxy corn starch, on the one hand, enhances the bonding force, and on the other hand, because the amino group has strong hydrophilicity, it can protect the corn starch molecular chain, thereby weakening the influence of water molecules on the oxidized waxy corn starch adhesive, and improving the water resistance; the corn starch is oxidized by a simple oxidant to introduce aldehyde groups and carboxyl groups, thereby improving the overall stability of the adhesive; at the same time, the oxidation also reduces the polymerization degree of corn starch to a certain extent, and the degradation of the long molecules of corn starch leads to the formation of relatively short molecular chains, which enhances the fluidity of the oxidized corn starch adhesive and improves the processing performance; the amino glucan is a biodegradable high molecular polymer, and the combination with the oxidized corn starch gives the adhesive green degradable properties.

The invention provides a medical tissue adhesive and a preparation method thereof, belonging to the adhesive field. The medical tissue adhesive provided by the invention includes: a functional component, an assistant crosslinker and a dispersing agent, wherein the functional component is a polymer chain modified by tissue adhesive group or a micro nano particle modified by tissue-adhering functional groups, and the tissue-adhering functional groups includes: o-nitrobenzyl photoplate group, active ester group or carbonyl group. The medical tissue adhesive provided by the invention can not only use the dispersing agent to expel the tissue fluid or blood on the tissue surface, so that the adhesive molecular segment in the functional component can quickly form a chemical bond with the amino group on the tissue surface to form a strong tissue adhesive force, but also can trigger the adhesive molecular segment in the active ingredient to react with the amino group on the assistant crosslinker, so that the medical tissue adhesive can be quickly gelled and solidified as a whole. Therefore, it has good bleeding performance, hemostatic performance and tissue adhesion performance.

The present disclosure relates to multimers capable of efficiently activating immune cells, such as T cells. In particular, it relates to multimers comprising at least two different ligands, such as a MHC-peptide and an anti-CD28 antibody, capable of binding to and together activate said immune cell. The disclosure further provides nucleic acid, vectors, and compositions encoding or comprising said multimers, and various methods for their use.

The present application provides a binder and a preparation method thereof. The binder comprises a copolymer comprising a building block (I) and a building block (II), wherein the building block (I) is formed by copolymerizing a building block (i) and a building block (ii). The binder of the present application is a multifunctional binder with excellent binding, dispersing and thickening properties. An electrode sheet prepared from the binder of the present application has a relatively low electrode sheet resistance. A secondary battery prepared from the binder of the present application also has excellent cycling performance.

A moisture control mechanism that allows a desired amount of moisture to evaporate out of a multiple ply paperboard structure is provided. The moisture control mechanism comprises an adhesive that adheres the multiple plies together, the adhesive comprising dextrin and an acrylic polymer. Alternately or additionally, a strength preservation mechanism that allows a strength to be maintained even when a multiple ply paperboard structure is highly wet. The strength preservation mechanism comprises an adhesive that adheres multiple plies together, the adhesive comprising dextrin and an acrylic polymer.

The present invention relates to a kind of environment-friendly water-based sealing glue and preparation method thereof, adhesive field, according to weight parts, including 30-40 parts of aqueous tackifying emulsion;10-15 parts of xanthan gum;5-10 parts of guar gum;5-10 parts of lignocellulose;3-5 parts of tamarind gum;5-8 parts of sodium carboxymethyl starch;1-2 parts of nano-silicon dioxide;0.5-1 parts of citric acid;0.3-0.5 parts of potassium sorbate;0.5-1 parts of polyether-modified silicone oil;60-80 parts of deionized water.The environment-friendly water-based sealing glue of the present invention contains multiple tackifying components such as aqueous tackifying emulsion, xanthan gum, guar gum, lignocellulose and tamarind gum, and these components cooperate with each other to form a complex viscous network structure, can enhance the bonding force between sealing glue and different packaging materials, make it have good bonding, high and low temperature resistance and aging resistance effect on multiple substrates such as paper, plastic, etc.

To provide an adhesive and an adhesive sheet which are excellent in instantaneous adhesiveness and can be recycled.SOLUTION: An adhesive which contains a non-polymerizable cyclodextrin compound does not fall in the conditions of a test temperature of 40°C, an adhesive area of 25 mm×25 mm, a load of 9.8 N and a retention time of 3 hours when performing a retention test based on JIS Z0237:2009 of adhering an adhesive layer (11) of a thickness of 50 μm, having a gel fraction of 30% or less and comprising the adhesive to a soda lime glass.SELECTED DRAWING: Figure 1

The invention relates to an environment-friendly water-based sealing adhesive and a preparation method thereof, and belongs to the field of adhesives, and the environment-friendly water-based sealing adhesive comprises the following components in parts by weight: 30-40 parts of water-based tackifying emulsion; 10 to 15 parts of xanthan gum; 5 to 10 parts of guar gum; 5 to 10 parts of lignocellulose; 3-5 parts of tamarind gum; 5-8 parts of sodium carboxymethyl starch; 1-2 parts of nano silicon dioxide; 0.5 to 1 part of citric acid; 0.3 to 0.5 part of potassium sorbate; 0.5-1 part of polyether modified silicone oil; and 60-80 parts of deionized water. The environment-friendly water-based sealing glue contains various tackifying components such as the water-based tackifying emulsion, the xanthan gum, the guar gum, the lignocellulose and the tamarind gum, and the components cooperate with one another to form a complex viscous network structure, so that the bonding force between the sealing glue and different packaging materials can be enhanced, and the sealing performance of the sealing glue is improved. And the adhesive has good bonding, high and low temperature resistance and aging resistance effects on various substrates such as paper and plastics.

A biocompatible adhesive material is provided for use with living tissue and / or medical implants and the like, as well as methods and kits for making and using the biocompatible adhesive material. The biocompatible adhesive material includes a functionalized poloxamer component and an oxidized polysaccharide component, and can be tailored for specific tissue types and conditions.

A moisture control mechanism that allows a desired amount of moisture to evaporate out of a multiple ply paperboard structure is provided. The moisture control mechanism comprises an adhesive that adheres the multiple plies together, the adhesive comprising dextrin and an acrylic polymer. Alternately or additionally, a strength preservation mechanism that allows a strength to be maintained even when a multiple ply paperboard structure is highly wet. The strength preservation mechanism comprises an adhesive that adheres multiple plies together, the adhesive comprising dextrin and an acrylic polymer.

The invention relates to the technical field of lithium ion batteries, in particular to a preparation method and application of a thermosetting resin-based binder for a lithium battery. The preparation method comprises the following steps: (1) uniformly mixing thermosetting resin and polysaccharide biomass; and (2) uniformly mixing the mixture obtained in the step (1) with a dispersing agent to obtain the thermosetting resin-based binder. The polysaccharide biomass and the thermosetting resin are blended to modify the thermosetting resin, so that the elasticity and plasticity of the thermosetting resin are improved, good tensile property is ensured, and high-valued utilization of the polysaccharide biomass is realized.

The invention is directed to a settable adhesive composition, a shaped object and its use in ecological engineering applications, and to a process for preparing a shaped object. The shaped object comprises a set mass of the settable adhesive composition comprising a mineral-containing filler, a polystyrene sulfonate, a heterodiatomic salt, and a polyquaternium, dextran or a derivative of either.

This invention relates to the field of paper processing technology, specifically to an aging-resistant polysaccharide-based adhesive, its preparation method and application, and a method for repairing paper tears. The aging-resistant polysaccharide-based adhesive provided by this invention comprises β-1,3-glucan, galactomannan, xylan, calcium carbonate, natural polysaccharide additives, and water; the pH value of the aging-resistant polysaccharide-based adhesive is 7-8.5. The components of the aging-resistant polysaccharide-based adhesive provided by this invention work synergistically, exhibiting good adhesion to both smooth cuts and tears in paper. Furthermore, the tensile strength after bonding is further increased after accelerated aging treatment, demonstrating excellent aging resistance. In addition, the adhesive also has a certain deacidification ability and does not contain organic solvents or synthetic polymers, making it particularly suitable for repairing tears in paper artifacts.

A biocompatible adhesive material is provided for use with living tissue and / or medical implants and the like, as well as methods and kits for making and using the biocompatible adhesive material. The biocompatible adhesive material includes a functionalized poloxamer component and an oxidized polysaccharide component, and can be tailored for specific tissue types and conditions.