72results about How to "Effective cross-linking" patented technology

A polysaccharide coated carrier having a coating of at least two successive layers of polysaccharide. The first polysaccharide layer spontaneously associates with a second polysaccharide layer and, optionally, the carrier. Each successive layer of polysaccharide spontaneously associates with a preceding layer. Spontaneous association occurs due to the presence of oppositely charged functional groups on each layer of polysaccharide or due to a spontaneous reaction between the functional groups the layers. The carrier may be any surface such as a tube, microtitration plate, bead, particle or the like and is suitable for use in diagnostic or therapeutic methods.

The invention relates to methods for preparing crosslinked polyelectrolytes, in particular crosslinked polyelectrolytes multilayer films. The invention also relates to a method of coating a surface, and the obtained coated article.

A device and method for applying light to the cornea of the eye as, for example, to promote crosslinking of collagen in the cornea for vision correction. The device may include a structure having form and size similar to a conventional contact lens. The structure may include an optically dispersive element such as a mass of an optically dispersive material that may be contained in a cavity of a reflective element. Light applied to the dispersive mass as, for example, by an optical fiber connected to the structure is dispersed in the structure and passes into the cornea. The patient may blink or close the eye during the procedure, which increases patient comfort and aids in maintaining hydration of the cornea.

A thermosetting composition having:I. a curable polyester resin containing beta-ketoacetate moieties without vinyl unsaturations; andII. a phenolic resin having at least one methylol group.The curable polyester resin can be made by reacting a polyester resin with a compound containing a beta-ketoacetate moiety that does not contain a vinyl unsaturation such as alkyl acetoacetate compounds or diketene compounds.The curable polyester resin can be dispersed in water or dissolved in a solvent and is suitable for waterborne or solventborne coating compositions. Phenolic based crosslinking coating compositions that contain these curable polyester resins cure well with phenolic resin crosslinking compounds.

An antenna device (101) is provided with an antenna coil (31), a magnetic core (39), and a metal member (2). The antenna coil (31) is formed into a flexible substrate (33). The antenna coil (31) is wound in a loop shape or a spiral shape where the center part of the winding is the coil opening. The magnetic core (39) is inserted through a slit-shaped opening of the flexible substrate (33). A rectangular opening (CA) is formed in the metal member (2), and the antenna coil (31) is exposed through the opening (CA) of the metal member (2). A coil conductor (31A) on the surface side is on the opening (CA) side away from the magnetic core (39), and the magnetic flux phia interlinks with the coil conductor (31A) on the surface side.

The invention relates to processes for coating a surface with a crosslinked polyelectrolytes multilayer film incorporating a protein, preferably a growth factor type protein. The invention also relates to crosslinked polyelectrolytes multilayer films obtained by this process, and a coated surface obtained therefrom.

The invention relates to a method for preparing a graphite paper / carbon nano tube-graphene / polyaniline flexible composite electrode, and belongs to the technical field of an electrode material. The technical scheme comprises the steps of highly dispersing graphene and carbon nano tubes in milk powder solution, preparing stable suspension liquid, forming the graphene and the carbon nano tubes on the surface of the suspension liquid in a cross stacking mode by employing an electrophoretic deposition method, and wrapping and coating milk powder on the graphene and the carbon nano tubes through electrophoresis; connecting loose nano-powder through vacuum high temperature carbonization processing, and preparing active carbon cross-linked graphite paper / carbon nano tube-graphene with a three-dimensional space breakover network structure; and obtaining the graphite paper / carbon nano tube-graphene / polyaniline electrode by employing microwave-assisted polymerization method. The electrode obtained by the method has high electrochemical property and mechanical property. The polyaniline is controllably and uniformly loaded on the surface of a nano-composite layer. The specific capacitance is further improved. A layered pore structure is solidified in situ, and the flexible thin film with high specific capacity is realized.

A hydrophilic film forming composition includes (A) a hydrophilic polymer having a silane coupling group at the terminal thereof; (B) an alkoxide compound of an element selected from Si, Ti, Zr and Al; and (C) a compound selected from a compound (C-1) and a compound (C-2), wherein the compound (C-1) has at least one silane coupling group and at least one acidic group or its salt in the molecule thereof, and the compound (C-2) has at least one functional group that reacts with a hydrolysate of a silane coupling group or with a hydrolytic condensate of a metal alkoxide and at least one acidic group or its salt in the molecule thereof.

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer and a second repeating unit derived from a crosslinker monomer or oligomer having more than two polymerizable groups. Devices formed from radiopaque polymer compositions are also provided.

The invention provides a formaldehyde-free fixing agent for all-color-series reactive dyes as well as a preparation method and a use method of the formaldehyde-free fixing agent. The formaldehyde-free fixing agent is formed by compounding a first fixing agent and a second fixing agent in a ratio being (1-3):(2-4) in parts by weight. According to the formaldehyde-free fixing agent for all-color-series reactive dyes, two different types of fixing agents are compounded, so that the formaldehyde-free fixing agent contains quaternary ammonium salt cation groups and reactive groups, the groups can have a certain synergistic effect, and the fixing performance of the formaldehyde-free fixing agent is more outstanding.

A reluctance motor has: a stator provided with drive coils to which multiphase drive currents are inputted; and a rotor provided with a plurality of salient poles which receive primary rotating force when magnetic fluxes generated in the drive coils are interlinked with the rotor, and the rotor has: inductor pole coils which are placed on magnetic paths on which spatial harmonic components superimposed on the magnetic fluxes generated in the drive coils are interlinked with the rotor side so that induced currents can be generated in the inductor pole coils due to the spatial harmonic components of the magnetic fluxes; rectifier elements which rectify the induced currents generated in the inductor pole coils; and electromagnet coils as defined herein, and the inductor pole coils and the electromagnet coils do not serve for each other's purposes but are placed on the rotor individually.

An object of the present invention is to provide a method of effectively producing a nano-particle and a nano-wire, and others. Specifically, the present invention provides a method of producing a molecular device including: the use of a molecular structure having a higher atomic density in the periphery than in the interior and bonding residues in the periphery; and a step of crosslinking the bonding residues, and the method of producing a molecular device according to claim 1, characterized in that the molecular structure is constituted by a skeleton portion having a skeleton structure, and a terminal portion which is arranged in the outer shell of the skeleton portion, has a higher atomic density than that of the skeleton portion and has bonding residues; and that in the step of crosslinking the bonding residues, the bonding residues in the terminal portion of the molecular structure are crosslinked to form the molecular structure into a shell structure, and others.

The invention provides a nano silicon dioxide organic boron cross-linking agent and a preparation method thereof, wherein the nano silicon dioxide organic boron cross-linking agent is nano silicon dioxide with the surface modified with an organic boric acid group.

An optical laminate comprising, laminated in the order mentioned, a support substrate, adhesive layer, cholesteric liquid crystal layer and protection layer, characterized in that the cholesteric liquid crystal layer has in at least part thereof an area indicating a diffraction power. The optical laminate is used for a polarization diffraction element, liquid crystal display device compensation element, decorative member, and forgery prevention element.

The present invention relates to a process for making a polymer masterbatch with silica nanoparticles highly uniformly dispersed therein by using a stable aqueous emulsion of compatibilized silica nanoparticles, the sizes of which are mechanically reduced to nanoscales. Adequate reduction of the silica particles to nanoscales is essential for the formation of a desired emulsion of highly stability. The said emulsion of compatibilized silica nanoparticle can be easily mixed under mild conditions with a polymer in latex form, which can be high purity natural rubber, synthetic rubber and / or a blend thereof. The bifunctional organosilane coupling agent bonded-Silica nanoparticles are subsequently incorporated into the rubber polymer network during coagulation with formic acid. The inventive rubber-silica masterbatch thus obtained is useful for manufacturing rubber and other polymer composite products.

The invention relates to an environmentally-friendly recycled paper and a preparation method thereof, which belong to the technical field of paper making. The method uses waste paper as a raw materialto synthesize two hydrophilic group surfactants, the surface tension is reduced, and steps of penetration, emulsification and dispersion are carried out on an ink, thereby removing, the whiteness ofthe waste paper is improved, and the recycled paper can be re-printed and reused; an active methylene hyperbranched waste paper formaldehyde-removal additive is prepared by taking ethyl acetoacetate and hydroxyl terminated hyperbranched polyester as raw materials, so that the formaldehyde can be captured and removed; dicyandiamide and hexanediamine dihydrochloride are taken as raw materials, ciprofloxacin is added for clathration as an antibacterial agent, the irritation is reduced, the utilization is increased and the action time is prolonged, the antibacterial property of recycled paper is increased, and mildew can be prevented; a silica sol is used as a raw material, and by compounding with calcium carbonate and bentonite, the mechanical properties of recycled paper and the tear resistance can be improved. The environmentally-friendly recycled paper solves the problems of high formaldehyde content and poor water resistance of waste paper at present.

The present invention relates to a method for cross-linking peptides using an activated furan-moiety. In particular, the present invention provides a method for cross-linking peptides comprising the steps of: a) providing a composition comprising furan-peptides, said furan-peptides comprising at least one amino acid comprising a furan-moiety; b) contacting said composition comprising furan-peptides with second peptides, thereby obtaining a mixture comprising furan-peptides and second peptides; c) adding an activation signal to said mixture of step b), thereby activating said furan-peptides to activated furan-peptides, and d) reacting said activated furan-peptides with said second peptides, thereby cross-linking said activated furan-peptides with said second peptides.

The invention discloses a fracturing fluid which comprises hydrochloric acid, a polyacrylamide polymer, an organic titanium-zirconium crosslinking agent, a corrosion inhibitor and water. The fracturing fluid provided by the invention has excellent high-temperature shear resistance, is capable of providing powerful technical support to the acid fracturing transformation of high-temperature deep-well carbonate reservoirs of oil fields, and has a wide application prospect in the development of oil and gas resources in the low-permeability carbonate reservoirs.

This disclosure relates to wear-resistant rubber compositions, such as those, for example, comprising at least one hydroxy-terminated polybutadiene, at least one natural rubber, at least one polymerization accelerant; at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 30×10−5 moles / cm3.

The invention discloses a silane cross-linked peelable semi-conductive external shielding material and a preparation method thereof. The silane cross-linked peelable semi-conductive external shieldingmaterial is prepared by mixing a grafted material A and a catalytic material B with a mass ratio of (5 to 9) to 1 and then cross-linking in warm water, wherein the grafted material A comprises the following components in parts by weight: 100 parts of ethylene-vinyl acetate copolymer, 1 to 4 parts of silane, 0.2 to 1 part of an initiator, 0.1 to 1 part of an antioxidant, and 5 to 10 parts of a lubricant; the catalytic material B comprises the following components in parts by weight: 100 parts of ethylene-vinyl acetate copolymer, 100 to 150 parts of conductive filler, 10 to 20 parts of a lubricant, 5 to 10 parts of a stripping agent, 1 to 5 parts of a dispersant, 0.5 to 3 parts of a catalyst, and 0.5 to 2 parts of an antioxidant; the ethylene-vinyl acetate copolymer has a VA content of 25%to 30%, a melt flow rate of 2.3 to 7.5 g / 10min (the test conditions are 190 DEG C and 2.16 kg, the same below). The silane cross-linked peelable semi-conductive external shielding material disclosed by the invention has good electrical conductivity, and in particular, can ensure effective cross-linking of the product.

The invention discloses a silane cross-linked semi-conductive external shielding material and a preparation method thereof. The silane cross-linked semi-conductive external shielding material is prepared by mixing a grafted material A and a catalytic material B with a mass ratio of (5 to 9) to 1 and then cross-linking in warm water, wherein the grafted material A comprises the following componentsin parts by weight: 100 parts of ethylene-vinyl acetate copolymer, 1 to 4 parts of silane, 0.2 to 1 part of an initiator, 0.1 to 1 part of an antioxidant, and 5 to 10 parts of a lubricant; the catalytic material B comprises the following components in parts by weight: 100 parts of ethylene-vinyl acetate copolymer, 100 to 150 parts of conductive filler, 10 to 20 parts of a lubricant, 1 to 5 partsof a dispersant, 0.5 to 3 parts of a catalyst, and 0.5 to 2 parts of an antioxidant; the ethylene-vinyl acetate copolymer has a VA content of 25% to 30%, a melt flow rate of 2.3 to 7.5 g / 10min under the test conditions of 190 DEG C and 2.16 kg. The silane cross-linked semi-conductive external shielding material disclosed by the invention has good electrical conductivity, and in particular, can ensure effective cross-linking of the product.

The invention provides a terminal alkyne-containing benzophenone derivative and a preparation method and application thereof. preparation method of the derivative is as follows: taking 2,4- dihydroxybenzophenone as a raw material, reacting with 5- chloro- 1- pentyne reaction to rapidly synthesize two terminal alkyne-containing benzophenone derivatives 1 and 2. The method has the advantages of simple preparation, mild reaction conditions, high total yield and the like. The derivative 1 can effectively absorb ultraviolet light of 250-360 nm, not only can enhance the light stability of UV-curable coating materials and coatings, but also has the characteristics of good compatibility with resin or monomer, no odor, and the like, and is benefitical to the storage of the UV-curable coating materials. At the same time, the derivative 2 introduces linear terminal alkynyl on the basis of a benzophenone structural skeleton, which can promote the effective crosslinking bonding of the compound to the resin or the monomer, and reduce the mobility of a photolysis by-product. The derivatives synthesized by the preparation method can serve as a UV absorbers and A UV initiators respectively to be applied in photocurable compositions such as coating materials, inks, and adhesives.

The present invention relates to a method for cross-linking peptides using an activated furan-moiety. In particular, the present invention provides a method for cross-linking peptides comprising the steps of: a) providing a composition comprising furan-peptides, said furan-peptides comprising at least one amino acid comprising a furan-moiety; b) contacting said composition comprising furan-peptides with second peptides, thereby obtaining a mixture comprising furan-peptides and second peptides; c) adding an activation signal to said mixture of step b), thereby activating said furan-peptides to activated furan-peptides, and d) reacting said activated furan-peptides with said second peptides, thereby cross-linking said activated furan-peptides with said second peptides.

The invention discloses a preparation method of a universal fabric antibacterial finishing agent. The preparation method particularly includes following steps: using dendrobium as a raw material, andextracting to obtain dendrobium polysaccharide; preparing sodium alginate crosslinked modified dendrobium polysaccharide; dispersing the sodium alginate crosslinked modified dendrobium polysaccharidein deionized water; sequentially adding acrylic resin, chitosan, silane coupling agent, defoamer and thickener, and stirring and mixing well to obtain the antibacterial finishing agent. The finishingagent is high in stability and fabric wettability and capable of effectively improving antibacterial performance and mechanical performance of fabric.

The invention discloses a secondary cross-linked gel profile control and flooding agent with low filtration loss. The profile control and flooding agent is prepared from a main agent, an activating agent, a primary crosslinking agent, a secondary crosslinking agent and water, wherein the activating agent is N,N-dimethyl-polyamide-amine; the primary crosslinking agent is hexamethylene tetramine orresorcin; the secondary crosslinking agent is a mixture of phenol and formaldehyde; the main agent is one of partially hydrolyzed polyacrylamide, a comb type polymer, a hydrophobically associated polymer or a hyperbranched polymer; the profile control and flooding agent is prepared from the following components in percentage by mass: 0.075 to 0.4 percent of the main agent, 0.02 to 0.075 percent ofthe activating agent, 0.03 to 0.3 percent of the primary crosslinking agent, 0.02 to 0.5 percent of the secondary crosslinking agent and the balance of the water. A secondary cross-linked gel systemis convenient to prepare on the scene and has strong feasibility; the secondary cross-linked gel system can be widely applied to profile control and flooding of strong non-homogeneous oil deposit andimproving a water injection developing effect.