747 results about "Isocyanate compound" patented technology

The invention relates to the technical field of polyurethane foam, and discloses fireproof flame-retardant foaming polyurethane and a preparation method thereof.The foaming polyurethane comprises a component A and a component B. The component A comprises, by weight, 100 parts of polyether polyol, 25-50 parts of a flame-retardant chain extender and the like; and the component B is 62-86 parts by weight of an isocyanate compound. The flame-retardant chain extender contains a plurality of polymerization sites, so that the crosslinking density of a polyurethane molecular chain is improved, a stable crosslinking network is formed, and meanwhile, the flame-retardant chain extender contains a siloxane structural unit with structural stability, so that the foamed polyurethane has higher compression strength. The flame-retardant chain extender contains a phosphate flame-retardant group, and forms a phosphorus-silicon flame-retardant system with a siloxane structure, so that the combustion heat release rate peak value, the total heat release amount and the total smoke release amount of foam are reduced, and the flame-retardant chain extender has good fireproof and flame-retardant properties.

The invention discloses an implantable absorbable PLA composite material and a preparation method thereof, and relates to the technical field of medical materials. The implantable absorbable PLA composite material is prepared from the following raw materials in parts by weight: 60 to 70 parts of PLA, 5 to 10 parts of poly (lactic-co-glycolic acid), 8 to 12 parts of polycaprolactone, 5 to 8 parts of modified hydroxyapatite, 2 to 3 parts of a toughening agent and 0.2 to 0.6 part of an antioxidant, the toughening agent is prepared by the following steps: reacting hydroxyethyl methylacrylate with ethylenediamine to prepare a four-arm compound, reacting the four-arm compound with 1-chloro-4-isocyanatobutane to prepare an isocyanate compound, and finally reacting the isocyanate compound with polyethylene glycol. The implantable absorbable PLA composite material prepared by the invention has excellent tensile property and impact resistance, and can meet the application requirements of clinical medical treatment.

The invention belongs to the technical field of optical materials, and particularly relates to an environment-friendly mercaptan optical resin material and a preparation method thereof. Comprising the following steps: (1) uniformly mixing a catalyst, a release agent and a polyisocyanate compound to prepare a mixture; (2) adding titanium dioxide nanoparticles with different particle sizes, which are modified by a polythiol compound and a sulfydryl silane coupling agent, into the mixture; and (3) heating and curing to prepare the environment-friendly mercaptan optical resin material. On the basis of small-particle-size titanium dioxide, a small amount of large-particle-size titanium dioxide is added. The large-particle-size titanium dioxide is not prone to agglomeration and good in dispersity, in the blending process, the granular large-particle-size titanium dioxide is easier to disperse, and agglomeration of small-particle-size titanium dioxide is prevented. Due to the addition of the small-particle-size titanium dioxide and the large-particle-size titanium dioxide, the mechanical strength of the mercaptan optical resin is further improved on the basis of maintaining the high refractive index of the mercaptan optical resin.

The present application provides an adhesive composition and a preparation method therefor, a battery pack, and an electric device. In particular, the present disclosure provides an adhesive composition, comprising a first component and a second component, wherein the first component comprises a polyol polymer and a polyamine polymer, and the second component comprises an isocyanate compound.

The invention discloses an electrolyte and a lithium ion battery, the electrolyte comprises a solvent and an additive, the solvent comprises carboxylic ester; the additive comprises a benzenesulfonyl isocyanate compound, the benzenesulfonyl isocyanate compound meets the formula 1: # imgabs0 #, and R1, R2, R3, R4 and R5 are respectively and independently selected from any one of H, F, Cl, Br, methyl, ethyl, propyl, butyl, amyl and hexyl. The electrolyte provided by the invention is beneficial to improving the fast charging performance of the lithium ion battery, and the lithium ion battery has relatively good fast charging performance and cycle performance.

The invention belongs to the technical field of polymer materials, and provides LED-moisture dual-curing organic silicon modified hyperbranched polyurethane acrylic resin as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, taking first polyhydric alcohol and polyatomic acid as raw materials, preparing a hyperbranched polyester prepolymer containing hydroxyl at the tail end through a first reaction, and further performing a second reaction with an isocyanate compound and second polyhydric alcohol to prepare a hyperbranched polyurethane prepolymer containing isocyanate groups at the tail end; the coating further prepared from the organosilicon modified hyperbranched polyurethane acrylic resin not only can be subjected to UV curing, but also can be subjected to LED curing and moisture curing, energy required by curing is low, curing is 100%, environment friendliness is achieved, VOC is zero, the flash point is 95 DEG C or above, the product curing speed is high, the viscosity is low, and the coating can be widely applied to the field of high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing and high-temperature curing. The paint has the advantages of good flexibility, good film-forming property, strong adhesive force and excellent weather resistance.

The invention discloses a sizing agent and a preparation method thereof and belongs to the technical field of carbon fibers. The preparation method comprises the following steps: dissolving 1 part of polyethylene glycol in an organic solvent according to a molar ratio, adding 0.9-1.1 parts of a first isocyanate compound, stirring, heating to 40-50 DEG C, and reacting; the preparation method comprises the following steps: respectively adding 0.3-0.5 part of second epoxy resin and a first diisocyanate compound, stirring, heating to 80-90 DEG C for reaction, then respectively adding 0.4-0.6 part of an acrylate compound and a third isocyanate compound for reaction, finally adding 0.8-1.2 parts of an allyl polyethylene glycol end-capping reagent, cooling to 40-50 DEG C, and stirring for 1-2 hours, so as to obtain the polyurethane adhesive. And removing the organic solvent to obtain the modified polyurethane main agent. The modified polyurethane main agent, the first epoxy resin and water are emulsified to obtain the sizing agent with good stability, adhesive force and bundling property, so that the wear resistance and bonding strength of the carbon fiber composite material can be improved.

It is provided a process to modify lignocellulosic materials with lignin, and incorporating lignin and isocyanates or other wood adhesive in wood products compositions, and their composition, preparation and application for bonding wood products are disclosed. The compositions comprise lignin, derived from a variety of natural resources, isocyanate compounds containing two or more isocyanate functional groups, or other wood adhesives.

To provide a polyurea resin composition which has an excellent curing time, is also excellent in water resistance and chemical resistance when formed into a coating film, and has suitable adhesion and hardness as a coating paint of a molding.SOLUTION: The polyurea resin composition contains a polyisocyanate compound (A) and a polyamine compound (B). The polyisocyanate compound (A) contains 51 mass% or more of an aliphatic polyisocyanate compound or its derivative (A1). The aliphatic polyisocyanate compound or its derivative (A1) contains more than 80 mass% in total of biurets or nurates. The polyamine compound (B) contains 80 mass% or more of an aspartic acid ester compound (B1). The aspartic acid ester compound (B1) contains 30 mass% or more of a non-alicyclic aspartic acid ester compound (B2).SELECTED DRAWING: None

The invention relates to a preparation method and application of a silicon-based biodegradable essence microcapsule, and the preparation method of the silicon-based biodegradable essence microcapsule comprises the following steps: S1, uniformly mixing oily essence and a silicon-based mesoporous material to obtain an oil phase; dissolving an emulsifier in water to obtain a water phase; s2, mixing the oil phase and the water phase, and homogenizing to obtain an emulsion; and S3, adding a diisocyanate compound and polypropylene carbonate into the emulsion, and carrying out a stirring reaction to obtain the silicon-based biodegradable essence microcapsule. A silicon-based mesoporous material is introduced in the process of preparing the essence microcapsule by taking polypropylene carbonate as a wall material, a synergistic wrapping system of the essence microcapsule is constructed, and the volatile essence is subjected to double-layer protection by utilizing a mode of combining physical adsorption and chemical crosslinking embedding, so that the fragrance retention time of the essence is prolonged, and the fragrance retention time of the essence is prolonged. Meanwhile, the embedding rate of the microcapsule can be effectively improved, and the application of the essence microcapsule in actual production can be promoted by combining the biodegradable characteristic of the polypropylene carbonate.

The invention discloses acrylic photosensitive resin containing a carbamate group, a photosensitive resin composition and photosensitive solder resist ink, and relates to the technical field of photosensitive solder resist ink. The embodiment of the invention provides acrylic photosensitive resin containing a carbamate group. The acrylic photosensitive resin is prepared from the following raw materials: an acrylate copolymer with a side chain containing hydroxyl, an anhydride compound and an isocyanate compound, wherein the acid anhydride compound can react with part of hydroxyl on the side chain of the acrylate copolymer through an acid anhydride group to obtain acrylate grafted with the acid anhydride compound; the isocyanate compound can react with the residual part of hydroxyl on the side chain of the acrylate copolymer through the isocyanate group to obtain the acrylic photosensitive resin containing the carbamate group. When the acrylic photosensitive resin containing the carbamate group is used for photosensitive solder resist ink, the adhesion, heat resistance and flexibility of a dry film prepared from the photosensitive solder resist ink can be improved.

The invention belongs to the technical field of polyurethane adhesives, and particularly relates to a two-component polyurethane structural adhesive as well as a preparation method and application thereof. The bi-component polyurethane structural adhesive comprises a component A and a component B which are independently stored, the component A comprises polyester polyol, polyether polyol, castor oil polyol and optional first filler, first molecular sieve, first plasticizer and first aid; the component B comprises an isocyanate compound, an isocyanate double-terminated polyurethane prepolymer and optional second filler, a second molecular sieve, a second plasticizer and a second aid; the first filler and the second filler are independently selected from filler modified by a silane coupling agent. The key of the invention lies in that polyester polyol, polyether polyol and castor oil polyol with long carbon chain structures are introduced as polyol raw materials, and a specific filler modified by a silane coupling agent is introduced, so that the obtained bi-component polyurethane structural adhesive has excellent interfacial shear strength and T peel strength at the same time.

The invention provides a modified aspartate resin and an aqueous dispersion, and relates to the technical field of aqueous emulsions. The modified aspartic ester resin is obtained by reacting hydrophilic aspartic ester resin with a polyisocyanate compound and then reacting with hydrophobic aspartic ester resin, has moderate hydrophilicity and can be self-emulsified and dispersed in water to form an aqueous dispersion, and a coating cured by the aqueous dispersion is relatively good in water resistance.

The invention discloses a graphite block glassy carbon coating preparation method and a composite material. The graphite block glassy carbon coating preparation method comprises the following steps: roughening the surface of a graphite block; adding fumed silica and an isocyanate compound into the phenolic resin solution to obtain a modified resin solution; respectively preparing a first coating material, a second coating material and a third coating material based on the modified resin solution, the graphite powder and the carbon nanotubes; sequentially coating the three coating materials on the surface of a graphite block, and carrying out cross-linking curing to obtain a multi-layer coating structure; performing segmented pyrolysis on the multi-layer coating structure in an argon atmosphere to obtain a glassy carbon coating; and carrying out surface sanding on the glassy carbon coating, dipping the glassy carbon coating in a phenolic resin solution, and then carrying out heat treatment to obtain the surface-modified glassy carbon coating. By means of the multi-layer coating structure design and the segmented pyrolysis technology, the technical problems that in the traditional glassy carbon coating preparation process, the coating quality stability is poor, and the oxidation resistance is insufficient are solved, and the prepared glassy carbon coating has the advantages of being high in bonding strength, excellent in oxidation resistance and the like.

The invention provides an attapulgite modified lignin / epoxy resin-based double-layer controlled release fertilizer and a preparation method thereof, and belongs to the technical field of fertilizer manufacturing. The preparation method comprises the following steps: mixing and dissolving a liquefying agent and polyol, adding lignin and an acid catalyst for reaction, then adding attapulgite for modification to obtain attapulgite-modified lignin-based polyol, spraying the attapulgite-modified lignin-based polyol, an isocyanate compound and a catalyst onto the surface of a fertilizer for in-situ polymerization reaction to obtain the modified lignin-based polyol. An inner-layer coated fertilizer is obtained; and mixing and dissolving epoxy resin and a wax water-blocking agent to obtain an outer-layer coated solution, spraying the outer-layer coated solution to the outer surface of the inner-layer coated fertilizer, and then spraying an amine compound to obtain the double-layer controlled-release fertilizer. The double-layer slow / controlled-release fertilizer breaks through the dependence of a traditional fertilizer on a non-degradable petroleum-based material, not only realizes the easy degradability of a membrane material and effectively avoids secondary pollution, but also remarkably reduces the production cost, and has extremely high economic benefits.

The invention provides a resin composition as well as a cured film and application thereof. The resin composition comprises alkali-soluble acrylic resin, a photopolymerization monomer, a photoinitiator and a coloring agent, the coloring agent comprises modified TiO2, and the modified TiO2 is TiO2 which is subjected to graft modification by an isocyanate compound and a silane coupling agent. According to the invention, by grafting a small molecule compound with an isocyanate group on the surface of the titanium dioxide, the compatibility of the titanium dioxide is improved, and the crosslinking degree is improved; and the crosslinking degree and the heat resistance are improved through the reaction of isocyanate groups and hydroxyl groups in the system.

The present invention provides: a packaging material which is excellent in terms of breaking resistance and easy tearability; a polyisocyanate composition which is suitable for the manufacturing of this packaging material; and an adhesive.　The present invention specifically provides a polyisocyanate composition (X) which contains a polyisocyanate compound (A), wherein: the polyisocyanate compound (A) contains 60 mass% or more of a bifunctional polyisocyanate compound (A1) that is derived from a non-aromatic diisocyanate; a polyol mixture contains 70 ± 1 mass% of a polypropylene diol that has a hydroxyl value-based number average molecular weight of 415 ± 20 and 30 ± 1 mass% of a polypropylene triol that has a number average molecular weight of 415 ± 35; a coating film, which is obtained by curing with the molar ratio [NCO] / [OH] of the isocyanate groups of the polyisocyanate compound (A) to the hydroxyl groups of the polyol mixture being 1.3 ± 0.1, has an elongation at break of 30% or more as determined at a tensile rate of 200 mm / minute at 25°C and a humidity of 40%.

The present invention provides a technology related to a binder with excellent ionic conductivity, adhesiveness, and discharge retention rate. The polyurethane resin aqueous dispersion used as a binder in a lithium secondary battery is an aqueous dispersion of a polyurethane resin obtained by reacting a polyisocyanate compound (a), a compound (b) having two or more active hydrogen groups, a compound (c) having a hydrophilic group and one or more active hydrogen groups, and a chain extender (d). The compound (b) contains: a polyolefin (b1) having two or more active hydrogen groups; and a polycarbonate (b2) having two or more active hydrogen groups and a continuous carbon atom number of 6 or less. The crosslinking density per 1000 molecular weight of the resin solid content contained in the polyurethane resin aqueous dispersion is 0.02 mol / kg or more and 0.28 mol / kg or less.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a composition capable of reducing internal stress of a pressure-sensitive adhesive, the pressure-sensitive adhesive and a preparation method and application of the pressure-sensitive adhesive. The invention provides a composition capable of reducing internal stress of a pressure-sensitive adhesive. The composition comprises a (methyl) acrylate polymer, a cross-linking agent and a chain extender, the structural formula of the cross-linking agent is as follows: # imgabs0 #, X represents a residue obtained by removing two isocyanate groups from a polyisocyanate compound, and Y represents a residue obtained by removing active hydrogen atoms from a hydrogen abstracting type photoinitiator containing active hydrogen; the chain extender comprises long-chain polyamine. The composition provided by the invention can greatly reduce and even eliminate the internal stress of the pressure-sensitive adhesive in the use process, and effectively reduces the possible problems of pressure-sensitive adhesive aging, cracking, interface stripping or bubble rebound and the like caused by long-term stress accumulation of an adhesive layer.

An ink set for inkjet textile printing includes an ink and at least one treatment liquid. The ink includes a pigment, a pigment-dispersing agent, and a solvent, the pigment-dispersing agent is a block copolymer including a hydrophilic block A and a hydrophobic block B, at least one of the treatment liquid and the ink contains a crosslinking agent, and the crosslinking agent includes at least one of a vinyl ether compound, an epoxy compound, a carbodiimide compound, an oxazoline compound, an isocyanate compound, and an aziridine compound.

A polymerizable composition for optical materials of the present invention contains (A) a polyisocyanate compound, (B) a polythiol compound, (C) a photochromic compound, (D) a polyether compound having a number-average molecular weight of 50 to 10,000, and (E) a polyether-modified siloxane compound having a viscosity of 1 mPa·s or more and less than 1,600 mPa·s.

To provide a method for manufacturing a laminated sheet which is excellent in interlayer adhesion between a fiber layer and a resin layer, and a method for manufacturing a laminate using the laminated sheet which is obtained by the method for manufacturing the laminated sheet.SOLUTION: A method for manufacturing a laminated sheet having a resin layer (1A) and a fiber layer in this order on at least one surface of a thermoplastic resin base material includes the following steps 1 to 3. Step 1: a step of coating a coating liquid for forming the resin layer (1A) containing a resin and a block isocyanate compound onto at least one surface of the thermoplastic resin base material, drying the coating liquid at a specific temperature, and forming a resin layer (1a). Step 2: a step of coating a coating liquid for forming a fiber layer containing a resin and a fine fibrous cellulose having a fiber width of 1 nm or more and 1,000 nm or less onto a surface opposite to the thermoplastic resin base material of the resin layer (1a), drying the coating liquid at a specific temperature, and forming a fiber layer. Step 3: heating a sheet where the fiber layer is formed at a specific temperature, and forming the resin layer (1A).SELECTED DRAWING: Figure 2

The objective of the present invention is to provide a decorative sheet that has all of the following properties: workability in three-dimensional molding, adhesion to a substrate, and scratch resistance on the surface. [Solution] A three-dimensionally moldable decorative sheet having at least a resin substrate layer and a surface protective layer, wherein the surface protective layer is made of a cured product of a resin composition containing an ultraviolet-curable resin (A) and a thermosetting resin (B) in a mass ratio of 30:70 to 60:40, the ultraviolet-curable resin (A) being one or more urethane (meth)acrylates selected from polyesters, polyethers, and polycarbonates, each having 2 to 3 functional groups, and the cured product having a pencil hardness of HB to 4B, and the thermosetting resin (B) being made of an acrylic polyol resin and a polyisocyanate compound as a curing agent.

The invention provides a preparation method of a furyl polyurethane material containing a Diels-Alder structure, the furyl polyurethane material and application of the furyl polyurethane material in 3D printing. The preparation method comprises the following steps: carrying out amidation reaction on furanmethyl ester and diethanol amine to generate a furyl polyamide monomer; the furyl polyamide monomer and a polyisocyanate compound are subjected to an amine-alcohol reaction to generate a furyl polyurethane monomer; and the furyl polyurethane monomer and a bismaleimide compound are subjected to a Diels-Alder addition reaction, such that the furyl polyurethane material containing the Diels-Alder structure is obtained.

The invention discloses a photocurable blocked isocyanate compound and a low-temperature curing photoresist, and belongs to the field of semiconductor materials. The photocurable blocked isocyanate compound disclosed by the invention can participate in a photocuring reaction, and can realize deblocking at the temperature of 80 DEG C and generate a cross-linking reaction with a system, so that the thermocuring temperature of the photoresist is effectively reduced, and the obtained photoresist composition can be cured at a relatively low temperature of 80 DEG C and is widely applied to photoetching in the fields of display, PCB (Printed Circuit Board), semiconductors and the like; the process temperature can be effectively reduced, and the mechanical property and the thermal stability are improved.

The present disclosure aims to provide a technology capable of etching a film at least containing Si and N in a substrate having a film at least containing Si and O and the film at least containing Si and N while suppressing etching of the film at least containing Si and O. The present disclosure relates to an etching method including bringing (I) HF gas and (II) at least one compound selected from the group consisting of a sulfonyl compound, a carbonyl compound, a sulfonyl isocyanate compound, and an isocyanate compound into contact with a substrate having a film at least containing Si and O and a film at least containing Si and N to etch the film at least containing Si and N.

The present invention relates to a process for preparing 2, 4-di substituted thiophene-3- sulfonyl isocyanate compound of Formula (I), by reacting with the compound of Formula (II) with phosgene in the presence of a catalyst, and a mixture of a non-polar solvent and an organosulfur co-solvent, and optionally in the presence of a base.

The invention provides a foamed polyurethane material and application thereof, and relates to the technical field of foamed polyurethane materials. The foaming type polyurethane material is composed of a component A and a component B. The component A comprises the following raw material components: 100 parts of polymer dihydric alcohol, 1-8 parts of a chain extender, 1-3 parts of a catalyst, 1-5 parts of modified silicone oil and 0.5-2 parts of water. And the component B is a polyisocyanate compound. Wherein the structure of the modified silicone oil contains a hydrophilic polyethylene glycol chain segment and an anthraquinone structure, so that the denitrification performance of the foaming type polyurethane material on nitrogen-containing sewage is improved.

The present application provides an electrolyte additive, an electrolyte and a battery, wherein the electrolyte additive includes a first additive and a second additive; the first additive includes a compound represented by formula I: R1, R2 and R3 each independently include any one of H, F, C1-C4 alkyl, C1-C4 fluoroalkyl, C2-C4 alkenyl, C2-C4 fluoroalkenyl, C2-C4 alkynyl, C5-C7 cycloalkane, R4 substituted phenyl and R5 substituted benzyl; R4 and R5 are each independently selected from H, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl, C1-C4 fluoroalkyl, C 2‑ Any one of a C4 fluoroalkenyl group and a C2-C4 fluoroalkynyl group; the second additive comprises an isocyanate compound. The electrolyte additive of the present application forms an interfacial film on the electrode surface that is highly stable, smooth, uniform in thickness, flexible, highly conductive, and corrosion-resistant, resulting in excellent cycling stability and high-temperature storage performance under high-voltage conditions.

The invention discloses a preparation process of an environment-friendly polyurethane adhesive, and relates to the technical field of sustainable materials, the environment-friendly polyurethane adhesive comprises castor oil-based polyol, a furyl-containing isocyanate compound, a first chain extender, a second chain extender, nano cellulose and a silane coupling agent; the castor oil-based polyol is prepared from the following components in parts by weight: 65 to 75 parts of castor oil-based polyol; 18 to 22 parts of a furyl-containing isocyanate compound; a first chain extender (castor oil amine) accounting for 10-15 parts of the mass of the prepolymer; a second chain extender (bismaleimide compound) which accounts for 5-10 parts of the mass of the prepolymer; 0.3 to 0.8 part of nano cellulose; 1.5 to 2.5 parts of a silane coupling agent; bio-based raw materials such as castor oil-based polyol are adopted to replace traditional petroleum-based raw materials, dependence on fossil resources is greatly reduced, the green chemistry concept is met, unreacted monomers and by-products are removed through the supercritical CO2 fluid technology, use of organic solvents in a traditional process is avoided, emission of volatile organic compounds is effectively reduced, and the method is suitable for industrial production. And environmental and health risks are reduced.