1066 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 provides a packaging film glue solution composition, a packaging film as well as a preparation method and application of the packaging film. The packaging film glue solution composition is prepared from the following components in parts by weight: 10 to 30 parts of organic silicon modified aliphatic polyurethane acrylate resin, 0.1 to 5 parts of UV (Ultraviolet) reactive diluent, 30 to 60 parts of epoxy resin, 2 to 12 parts of flexibilizer, 20 to 55 parts of curing agent, 0.1 to 2 parts of accelerant, 5 to 20 parts of light diffusion powder, 0.02 to 1.0 part of coupling agent and 0.05 to 0.5 part of photoinitiator, the organic silicon modified aliphatic polyurethane acrylate resin is prepared from the following raw materials: polyester glycol, carbon-terminated hydroxyl polydimethylsiloxane, a diisocyanate compound and hydroxyl acrylate; the molar ratio of the polyester diol to the carbon-terminated hydroxyl polydimethylsiloxane is (15-45): 1; the UV active diluent comprises an epoxy acrylate compound. The packaging film glue solution composition provided by the invention has good film-forming property, and a packaging film prepared from the packaging film glue solution composition is good in environmental reliability and has high filling rate when a Mini LED display module is packaged.

Polyurethane compositions include a reaction product of: an isocyanate component comprising one or more isocyanate compounds; and an isocyanate-reactive component including: one or more polyether polyols comprising at least one capped polyether polyol having an OH functionality of 3 to 6, and an EO content of 10 wt%to 25 wt%; one or more polyol crosslinkers having a hydroxyl functionality of 2 or more; and one or more solid flame resistance (FR) additives in at least one of the isocyanate component, the isocyanate-reactive component, or a third component; wherein the polyurethane composition has a hardness of 20 Shore A or more. Methods include preparing polyurethane compositions that include combining the isocyanate component and the isocyanate-reactive component to form a mixture; and reacting the mixture to form the polyurethane composition.

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.

To provide an acrylic adhesive composition containing a polytetramethylene glycol-based urethane (meth)acrylate compound as an essential component, which has low viscosity and excellent workability, and exhibits high peeling strength and shear strength.SOLUTION: An acrylic adhesive composition contains: (A) a polytetramethylene glycol-based urethane (meth)acrylate compound having a (meth)acrylate group at a terminal, which is obtained by reacting (a) a polyol compound and (b) a polyisocyanate compound in a molar ratio of the component (b) to the component (a) of 0 to 0.5 with (c) a terminated (meth)acrylating agent; (B) a polymerizable vinyl monomer; (c) an organic peroxide; and (D) a reducing agent, as essential components.SELECTED DRAWING: None

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.

The purpose of the present invention is to provide a coating composition which is capable of forming a coating film having excellent water tightness resistance, hardness, and weather resistance, and which has a low VOC content. The coating composition is characterized by containing (A) a compound containing an isocyanate reactive group, (B) a polyisocyanate compound, and (C) a carbodiimide group-containing compound, and the solid content concentration of the coating composition is 90 mass% or more. In the coating composition, the carbodiimide group-containing compound (C) has an isocyanate group. In the coating composition, the carbodiimide group-containing compound (C) has an aromatic ring structure.

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 discloses a remodelable polyguanidine urea material based on aromatic guanidyl amino acid as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The preparation method comprises the following steps: uniformly mixing a reaction system containing an aromatic guanidino amino acid monomer, a polyfunctional isocyanate compound and a solvent, firstly carrying out pre-reaction, removing the solvent, and then curing to obtain the remodelable polyguanidino urea material based on the aromatic guanidino amino acid. Aromatic guanidyl amino acid containing guanidyl and carboxyl functional groups reacts with polyfunctional isocyanate to form a guanidyl urea bond and an amido bond, so that the dynamic covalent polymer network structure material is formed, has excellent thermal stability and mechanical properties, is high in dynamic exchange speed, and can be applied to the field of chemical engineering. Rapid remodeling and reprocessing can be realized through a simple hot pressing method; meanwhile, the method has the characteristics of simple preparation method, no need of a catalyst through the action of multistage hydrogen bonds and non-covalent bonds in the structure, mild reaction conditions, strong operability, easiness in realization of industrial production and great application prospect.

To provide a curable composition which enables provision of a cured product having high strength and is suitable for a fiber-reinforced composite material, and a fiber-reinforced composite material which enables provision of a molded article excellent in film peelability, moldability and surface smoothness.SOLUTION: A curable composition contains an epoxy group-containing compound (A), a polyol compound (B) having a hydroxyl equivalent of 125 to 600 g / equivalent, a polyisocyanate compound (C), and a curing agent (D) for an epoxy resin or a curing accelerator (E) for an epoxy resin, wherein the compound (C) contains a first polyisocyanate compound (C-1) having an NCO group content of 33.0 mass% or more and a second polyisocyanate compound (C-2) having an NCO group content of 30.1 mass% or more and 32.9 mass% or less, 15 to 50 mass% of the compound (C-2) is contained, and an NCO / OH ratio is within a range of 1.2 to 3.0.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.

To provide a cosmetic containing a specific silicone polyurethane, oil-soluble film-forming agent, and volatile oil, thereby exhibiting superior makeup endurance, uniformity of the coating layer, superior adhesion, and rapid drying of the coating layer.SOLUTION: The present invention relates to a cosmetic containing following components (A)-(C): a silicone polyurethane with a structural unit (1) based on a specific isocyanate compound, a structural unit (2) based on a specific dimethiconol, and a structural unit (3) based on a specific alkylene glycol, (B) an oil-soluble film-forming agent, and (C) a volatile oil.SELECTED DRAWING: None

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.

A block isocyanate composition according to the present invention which contains a block isocyanate derived from a polyisocyanate compound and two or more types of block agents, wherein the polyisocyanate compound contains an aliphatic triisocyanate which has a molecular weight of 200-350, inclusive, and a glass transition temperature of 40-120°C, inclusive.

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 present disclosure provides a perovskite solar cell and a manufacturing method. The method includes: providing a substrate; forming a functional layer on the substrate; forming a perovskite crystal in the functional layer; providing a postprocessing solution including a solvent and an isocyanates compound; applying the postprocessing solution to the perovskite crystal, and maintaining the postprocessing solution for a predetermined time period under a predetermined condition, so as to remove the solvent for complete reaction. According to the present disclosure, it is able to optimize the performance of the perovskite solar cell and improve the photoelectric conversion efficiency.

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.

This invention relates to a two-component polyurethane based thermal conductive adhesive composition and cured product thereof. The adhesive composition comprises a component (A) comprising a polyhydroxy compound and a crosslinker, and a component (B) comprising an isocyanate-containing compound and a (poly)isocyanate prepolymer having an active isocyanate group which is prepared by reacting a hydroxyl-terminated polybutadiene with excess amount of an aromatic isocyanate. The adhesive composition provides a favourably combination of good adhesion property and good thermal conductivity.

The invention provides a composite solid electrolyte as well as a preparation method and application thereof, and relates to the technical field of lithium ion batteries. Specifically, the composite solid electrolyte is prepared from the following components in parts by weight: 10-20 parts of an inorganic solid electrolyte, 10-20 parts of polyethylene glycol, 10-20 parts of polyoxyethylene, 1-3 parts of a cross-linking agent, 10-20 parts of lithium salt and a plurality of solvents, wherein the cross-linking agent comprises an isocyanate compound. According to the invention, the cross-linking agent containing the isocyanate group, the inorganic solid electrolyte and the polyethylene glycol are subjected to nucleophilic addition reaction, so that the inorganic solid electrolyte is skillfully connected with the polyethylene glycol through chemical bonds, and an organic-inorganic interface is further optimized; the organic-inorganic composite solid electrolyte disclosed by the invention has good ion transport property and a relatively wide electrochemical window, and the cycle performance and the rate capability of a lithium battery can be effectively improved.

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 invention provides a polyurethane composition as well as a preparation method and application thereof. The polyurethane composition is prepared from the following raw materials in parts by weight: 21 to 27 parts of first PU (polyurethane) resin, 10 to 14 parts of second PU resin, 23 to 28 parts of organic silicon modified plasticizer, 17 to 23 parts of carbon black, 16 to 21 parts of filler and 0.1 to 1.0 part of additive. The first PU resin is obtained by polymerizing a polyol compound and a first isocyanate compound. And the second PU resin is obtained by polymerizing a diisocyanate compound and a benzotriazole compound containing an active group and modifying with a perfluoropolyether compound. The organic silicon modified plasticizer is obtained by carrying out chain extension on an organic silicon-containing polyurethane chain segment by virtue of binary secondary amine and then carrying out end capping by virtue of mono-secondary amine. The polyurethane composition has excellent weather resistance, ultraviolet resistance, heat resistance, water resistance and thermal stability, is relatively good in mechanical property and adhesive property, and is very suitable for being used as a sealant or an adhesive in the technical fields of automobiles, buildings, industries and the like exposed in a sunlight irradiation environment for a long time.

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.