438 results about "Isocyanate compound" patented technology

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 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.

To provide a two-part curing type composition for coating the inner wall of a city water pipe, which exhibits excellent curing properties inside the city water pipe and forms a coating layer having excellent mechanical properties after being cured.SOLUTION: The present disclosure provides a two-part curing type composition for coating the inner wall of a city water pipe, which comprises a main agent (A) and a curing agent (B) and cures by contact between the agent (A) and the agent (B) to thereby coat the inner wall of the city water pipe. In the two-part curing type composition, the main agent (A) includes a urethane prepolymer having an isocyanate group, the prepolymer is produced from an isocyanate compound and a first polyhydric alcohol compound as reaction raw materials, and has a viscosity of 10 mPa s or more and 500,000 mPa s or less at 25°C, and the curing agent (B) contains an amine compound and a second polyhydric alcohol compound, and has a viscosity of 100 mPa s or more and 50,000 mPa s or less at 25°C.SELECTED DRAWING: None

The present invention provides a two-component composition that suppresses dripping during spray application, has high thermal insulation properties, excellent smoothness, and high interlayer adhesion strength for spray-applied polyurethane foam roofing. [Solution] A two-component composition for spray-applied polyurethane foam for roofs, comprising: liquid A containing a polyol, a catalyst, and a blowing agent; and liquid B containing an isocyanate compound, wherein the catalyst includes a foaming catalyst and a resinification catalyst (excluding a metal catalyst), and the blowing agent includes a hydrochlorofluoroolefin and does not include the metal catalyst which is the resinification catalyst, or a trimerizing catalyst.

This application belongs to the technical field of grouting materials for tunnel engineering, specifically relating to a grouting material suitable for tunnel rock strata reinforcement and its preparation method. It includes component A and component B; by weight, component A comprises: 75-85 parts of a first base material, 10-20 parts of a coupling agent, and 2-5 parts of a catalyst; component B comprises: 70-80 parts of a second base material and 15-25 parts of a modifying accelerator; wherein, the first base material is a water glass solution, and the physicochemical properties of the water glass solution meet the following conditions: modulus > 2.5, Baume degree < 40°Bé; the second base material is composed of isocyanate compounds and glycidyl etheroxypropyl cage-like polysilsesquioxane in a weight ratio of 100:(11-23); the modifying accelerator includes polyvinylpyrrolidone and dicarboxylic acid alkyl ester compounds. The two base materials synergistically cure at low temperature to form a highly cross-linked organic-inorganic composite network, thereby significantly improving the compressive strength of the solidified body.

The invention discloses a modified polyurethane adhesive, and relates to the technical field of high polymer materials. The invention relates to a modified polyurethane adhesive which is prepared from the following raw materials in parts by weight through reaction: 70-90 parts of polyether polyol, 8-12 parts of an isocyanate compound, 5-10 parts of an organic silicon modifier, 2-5 parts of a weather-resistant stabilizer, 4-7 parts of nano filler, 3-8 parts of a chain extender and 1-4 parts of a catalyst. By introducing the weather-resistant stabilizer with a specific structure, the damage of ultraviolet light and free radicals to a polyurethane molecular chain is effectively blocked, so that the weather resistance and the aging resistance of the adhesive are remarkably improved, and the service life of the adhesive is prolonged.

A thermoplastic polyurethane resin elastomer is obtained by reacting an isocyanate compound (I), an aliphatic alcohol (II) having a number average molecular weight determined from the hydroxyl value of less than 300 and having only a hydroxyl group as a functional group, and a polyol (III) having a number average molecular weight determined from the hydroxyl value of not less than 300 and not more than 10,000. The isocyanate compound (I) includes not less than 90 mol % in total of an aliphatic isocyanate compound containing two isocyanate groups and / or an alicyclic isocyanate compound containing two isocyanate groups. The aliphatic alcohol (II) includes not less than 90 mol % of a C12 or lower aliphatic diol. The polyol (III) includes not less than 80 mol % of a copolymerized polycarbonate diol (IIIA) including a linear repeating structural unit represented by formula (A) and a repeating structural unit represented by formula (B).

The application discloses a kind of high-temperature phase change cooling-self-repairing dual-function microcapsules and its application, belong to intelligent road material field.The preparation method of the microcapsule includes: high-temperature phase change core material, aromatic oil asphalt regenerant and polyisocyanate compound are mixed to prepare oil phase;Afterwards, the oil phase is added to aqueous phase, and after mixing, it is reacted under the condition of 60~70 DEG C, after reaction is completed, the precipitate is collected, and the precipitate is washed with water and ethanol, and then dried to obtain the microcapsule;The preparation of the high-temperature phase change core material includes: mixing tricosane and tetracosane under the condition of 60~70 DEG C, and then cooling to room temperature to obtain high-temperature phase change core material;The aqueous phase is non-ionic emulsifier aqueous solution.The application effectively reduces the temperature of pavement by phase change endothermic, and relieves rut and aging;At the same time, the regenerant in core material can be released when crack occurs, to realize self-repairing.The application significantly improves the rut resistance, durability and service life of asphalt pavement in high-temperature area.

This invention provides a boot-shaped press belt with suppressed strength imbalances between components and excellent strength, as well as a method for preparing the boot-shaped press belt. A boot-shaped press belt for a paper machine has at least one resin layer comprising a polyurethane resin containing an isocyanate prepolymer cured by a curing agent having active hydrogen groups. The urethane prepolymer is obtained by reacting a polyisocyanate compound containing 4,4'-methylenebis(phenyl isocyanate) with a polyol compound containing polytetramethylene ether diol. The curing agent comprises polycarbonate diol.

To provide a urethane resin composition that can give a polyurethane foam having excellent incombustibility.SOLUTION: A urethane resin composition contains a polyol compound, a polyisocyanate compound, a flame retardant, a foamer, and a catalyst. When a polyurethane foam comprising the urethane resin composition is subjected to a cone calorimeter test in accordance with the ISO-5660 test method, the gross calorific value X up to 0-1200 seconds is 8 MJ / m2 or less, while the gross calorific value Y up to 0-60 seconds is less than 30% of the gross calorific value X up to 0-1200 seconds.SELECTED DRAWING: None

To provide a pressure-sensitive adhesive composition having anti-static performance and an excellent balance of adhesive strength between low and high speed peeling regions, and further being excellent in durability, reworkability, and anti-static property, a pressure-sensitive adhesive film, and a surface protective film of a polarizing plate.SOLUTION: A pressure-sensitive adhesive composition is formed of a copolymer containing a (meth)acrylate ester monomer having a 4-10C alkyl group (A), a hydroxy group-containing copolymerizable monomer (B), a carboxy group-containing copolymerizable monomer (C), and a polyalkylene glycol mono(meth)acrylate monomer (D), and further contains a 3 or more functional isocyanate compound (E), an anti-static agent (H), and a polyether-modified siloxane compound (I), and weight ratios of them based on (A) 100 are (B) 0.1-5.0, (C) 0.35-1.0, and (D) 1-20, and those based on copolymer 100 are (E) 0.5-5.0 and (I) 0.01-0.5.SELECTED DRAWING: None

The present invention relates to an aqueous composition for preparing a coating comprising a rheology control agent comprising a urethane polymer. The reagents are discontinuously prepared by a polymerization reaction of diisocyanate compounds and polyhydroxylated compounds followed by a termination reaction of prepolymers of these compounds with monohydric alcohols. The agent mainly comprises a urethane polymer strictly comprising more than three polyhydroxylated compound groups.

A urea-containing polyurethane acrylate resin is provided, which is prepared by: amide-forming the isocyanate groups in a polyurethane acrylate polymer with an amine compound to form urea groups, wherein the polyurethane acrylate polymer is prepared by reacting a hydroxyl-containing (meth)acrylate compound with a urethane prepolymer, the urethane prepolymer is prepared by reacting an isocyanate compound with a polyol compound, and the equivalent ratio of the isocyanate groups in the isocyanate compound to the hydroxyl groups in the polyol compound is 15:1 to 1:1. A urea-containing polyurethane acrylate resin, a composite material, and a method for preparing a composite material are also provided.

To provide a photosensitive resin composition capable of forming a polyimide resin film with excellent photolithography properties and storage stability, as well as excellent mechanical properties and chemical resistance, and a method for manufacturing a patterned polyimide resin film using the photosensitive resin composition. [Solution] A photosensitive resin composition comprising a reaction product (A) of a polyimide resin precursor (A1) having a specific structural unit and an isocyanate compound (A2) having a (meth)acryloyl group, a thermobase generator (B) that generates imidazole upon heating, and a photoradical polymerization initiator (C).

This invention provides a method for recycling packaging used in food packaging and other applications, as well as laminates used in the manufacture of such packaging. [Solution] A recycling method comprising a peeling step of immersing a laminate, which includes a first substrate, a second substrate, and an adhesive layer for bonding the first substrate and the second substrate, wherein the adhesive layer is a cured coating film of a two-component curing adhesive consisting of a polyol composition and a polyisocyanate composition containing a polyisocyanate compound, in a release agent to peel off the first substrate and the second substrate.

This application relates to the field of epoxy resins, and more particularly to a flexible, yellowing-resistant epoxy resin composition, its preparation method, and its application. The flexible, yellowing-resistant epoxy resin composition comprises one or more carbocyclic compounds represented by general formula (I) and one or more carbocyclic compounds represented by general formula (II); in general formulas (I) and (II): R1 and R2 are each independently selected from -H or C1-C. 20 The alkyl chain; R3 is independently selected from isocyanate compounds having two -NCO groups in the molecule; R4 is selected from polyhydroxy compounds containing -OH in the molecule. The flexible, yellowing-resistant epoxy resin composition of this application, in addition to having excellent molecular flexibility and solving the problems of warping, cracking, shrinkage, and defects caused by epoxy brittleness, can also maintain its original yellowing resistance.

The present invention provides a two-component curing adhesive that suppresses appearance defects even when used as a solvent-free adhesive in the manufacture of barrier substrates. A two-component curing adhesive comprising a polyisocyanate composition (X) containing a polyisocyanate compound (A) and an isocyanate-reactive composition (Y) containing a polyol compound (B), wherein the polyisocyanate compound (A) comprises a polyurethane polyisocyanate (A1), which is a reaction product of toluene diisocyanate and a polyol, and a hexamethylene diisocyanate derivative (A2), and the content of diisocyanate monomer in the polyisocyanate composition (X) is 1.0% by mass or less.

The present invention addresses the problem of providing: a conductive primer coating composition which can impart excellent electrical conductivity to a plastic substrate material when it contains a solvent immediately after coating, and which can be used for forming a multi-layer coating film; a method for producing the same; a coating film using the same; and a method for forming a multi-layer coating film. And good adhesive force is achieved between different types of plastic base materials and finish paint films under the condition of low-temperature and short-time heating. The solution uses a conductive primer coating composition, a method for producing the same, a primer coating film formed from these conductive primer coating compositions, and a method for forming a multilayer coating film, these conductive primer coating compositions comprise (C) a conductive pigment paste made by dispersing (A) a conductive pigment in (B) a non-chlorinated polyolefin resin comprising a hydroxyl group, (D) an acrylic resin-modified chlorinated polyolefin resin, and (E) a blocked polyisocyanate compound.

Provided is an ink composition for soft packaging laminates, the ink composition comprising: a urethane resin (A) that is obtained from a raw reaction material (I) including an organic diisocyanate compound (a1) and a polyol (a2) having a number average molecular weight (Mn) of 700-900, and that has a number average molecular weight of 1000-3000; and a urethane resin (B) which is obtained from a raw reaction material (II) that at least includes an aromatic polyisocyanate compound (b1) and a polyester polyol (b2). With this ink composition, it is possible to provide an ink composition for soft packaging laminates, which is capable of forming an ink layer that has excellent PEEL strength and dry laminate strength.

The application is a preparation method of polylactic acid-based polyurethane elastic fiber, comprising the following steps: step 1, reacting polylactic acid polyol, isocyanate compound and catalyst to obtain isocyanate group terminated prepolymer; step 2, fully reacting the prepolymer, chain extender and capping agent in the presence of a solvent in a reactor to obtain a polyurethane solution; step 3, using the polyurethane solution as a spinning solution to obtain polylactic acid-based polyurethane elastic fiber by dry spinning. The added nucleating agent and heat treatment technology are used to form a more perfect crystalline structure in the fiber, and the crystals act as physical crosslinking points, so that the fiber has higher modulus and breaking strength. The polylactic acid polyol with biodegradability is used to replace the traditional polymer polyol to synthesize polyurethane fiber, so that the prepared spandex is degradable, and the problems of difficult degradation and environmental pollution of waste spandex are effectively solved.

The polishing pad is used for polishing semiconductor, optical, magnetic, and / or electromechanical substrates. The polishing pad contains a polishing layer, which in turn contains a matrix polymer of a urethane-urea copolymer. The urethane-urea copolymer is the cured product of a urethane-containing polyol prepolymer and an amine curing agent. The urethane-containing polyol prepolymer is a urethane-containing reaction product of components comprising one or more polyols, a silicone oligomer with silicone repeat units end-capped with ether alcohol, and a polyisocyanate compound. The silicone oligomers are end-capped with carbinol groups and react with the polyisocyanate compound to form the urethane-containing polyol prepolymer.

To provide a woody fiber board composition exhibiting a high yield during preparation of subdivided products, together with a low generation rate of powder dust during the preparation of the subdivided products; and to provide a woody fiber board, a resin molded article, a pellet manufacturing method and a manufacturing method of the resin molded article thereof.SOLUTION: A woody fiber board composition comprises lignocellulose fiber, and an isocyanate compound. A content of the isocyanate compound to a total mass of the lignocellulose fiber and the isocyanate compound is 0.5 mass% or more and 6 mass% or less.SELECTED DRAWING: None

The invention discloses a high-performance modified polyurea polymer composite material which comprises a component A and a component B. The mass ratio of the component A to the component B is (21-23): (19-20), the component A comprises an isocyanate compound and a prepolymer of polyether polyol, and the component B comprises an amine chain extender, modified polyether amine, a flame retardant, a moisture-proof agent, an antioxidant and a catalyst. According to the invention, modified polyether amine is added into the component B of the polyurea polymer material, and the modified polyether amine can improve the compactness of a coating, reduce the permeation of a corrosive medium and enhance the adhesive force between the prepared polyurea and a base material; high strength can be provided for the prepared polyurea polymer composite material, so that the corrosion resistance and the salt spray resistance of the polyurea polymer composite material are further improved, and the polyurea can adapt to a highly corrosive environment with extreme acid and alkali.

The problem of the present invention can be solved by an adhesive which contains a specific acrylic copolymer (A), an isocyanate compound (B), and a metal chelate (C), and which satisfies all of the following (1)-(3) after curing. (1) 3.0 * 10 < 4 > Pad; g '(-20) lt; 4.0 * 10 < 5 > Pa, (2) 5lt; g '(-20) / G' (200) lt; 17, (3) 2lt; tan delta (-20) / tan delta (200) lt; 6.5); wherein in the formula, G '(-20) refers to the storage modulus at-20 DEG C and 1 Hz, G' (200) refers to the storage modulus at 200 DEG C and 1 Hz, tan delta (-20) refers to the loss tangent at-20 DEG C and 1 Hz, and tan delta (200) refers to the loss tangent at 200 DEG C and 1 Hz.

The present invention relates to a method for preparing 2,4-disubstituted thiophene-3-sulfonyl isocyanate compounds having formula (I), wherein the method comprises reacting a compound having formula (II) with phosgene in the presence of a catalyst and a mixture of a nonpolar solvent and an organosulfur cosolvent, and optionally in the presence of a base.

A kind of fast curing dimer fatty acid based polyurea resin and its preparation method, with dimer fatty acid as raw material, by reacting with glycidyl methacrylate to obtain intermediate, then the intermediate is added with a certain amount of phenylamine compound by amine addition reaction to obtain component A;Finally, the prepared component A is added to a certain proportion of isocyanate compound to obtain component B, and the obtained A / B two components are fast curing dimer fatty acid based polyurea resin.The dimer fatty acid based polyurea resin prepared by the patent can significantly reduce the reaction speed of conventional secondary amine and isocyanate group, increase the operable time, and effectively improve the usability of polyurea resin.At the same time, the cross-linked polymer containing amide bond, urea group and benzene ring in it has flexibility and rigidity, and can be used in the fields of road rapid repair, building surface spraying, etc.The dimer fatty acid based polyurea resin has abundant raw material sources, low cost, and belongs to renewable clean energy.The preparation process route is simple and feasible, the reaction condition is mild, and the application prospect is wide.

A curable adhesive film (Fa) obtained by the drying of a water-borne composition (a) comprising: water; a1) at least one first polyurethane polymer having at least one isocyanate reactive, active hydrogen group, wherein said first polyurethane polymer is obtained by the reaction of at least one polyisocyanate compound with at least one polyol (POHA) which has a number average molecular weight (Mn) of at least 500 g / mol. and which further has one or more structural units chosen from structural units of Formula (I), Formula (II), Formula (III) or combinations thereof: -CH (OH) -CH2-X1-Y (I) -CH (OH) -CH2-X2-CH2-CH (OH) - (II) -CH (OH) -CH2-X1-Y1-X3-CH2-CH (OH) - (III) a2) at least one second polyurethane polymer which is distinct from said first polyurethane polymer, said second polyurethane polymer having at least one isocyanate reactive, active hydrogen group; a3) at least one surface-deactivated solid polyisocyanate compound; a4) non-polymerizable electrolyte; and, optionally a5) rheology control agent comprising electrically non-conductive fillers, electrically conductive fillers or mixtures thereof, wherein the molar ratio of -N=C=O groups to active hydrogen atoms in the composition (a) is from 0.1:1 to 10:1.

To provide a printing ink composition for lamination that exhibits good color development and easy tearing properties without the need to use large amounts of hardening agent. [Solution] A laminating printing ink composition containing titanium dioxide pigment, a binder resin, isophorone diisocyanate or its adduct, which is a polyfunctional isocyanate compound, and an organic solvent as a curing agent: the content of the binder resin is 5 to 15% by mass in terms of solid content relative to the printing ink composition at the time of printing; the binder resin is a polyurethane resin having a reactive group that can react with the isocyanate group of the polyfunctional isocyanate compound, and in the polymer diol which is a raw material for the polyurethane resin A printing ink composition for lamination (excluding cases where the printing ink composition for lamination contains a vinyl chloride-vinyl acetate copolymer resin) wherein the polyester diol content is 70% by mass or more; the solid content ratio of the polyurethane resin to the curing agent is polyurethane resin:curing agent = 1:0.10~0.90; the content of the curing agent is 4 / 154 or less by mass relative to the printing ink composition at the time of printing; and the polyurethane resin is (1) or (2) below, or a mixture of (1) and (2) below): (1) At the end of the group, one or more of the following are present: primary amino group, secondary amino group, and tertiary amino group Polyurethane resin having and having hydroxyl groups (2) At the end of the group, one or more of the following are present: primary amino group, secondary amino group, and tertiary amino group Polyurethane resin containing [unclear].

This invention relates to the field of polyurethane materials technology, providing a composite foamed polyurethane material and its applications. The composite foamed polyurethane material consists of component A and component B. Component A contains di(hydroxyalkyl)anthraquinone, and component B is a polyisocyanate compound, wherein the polyisocyanate compound contains anthraquinone with a chemically bonded weight percentage of not less than 5%. This invention introduces anthraquinone structures into the foamed polyurethane material through two methods, and simultaneously adds carbon-based materials, which can fully utilize the role of anthraquinone as a redox mediator in promoting denitrification of nitrogenous wastewater, and also exhibits high mechanical strength and durability.

The present invention provides a two-component curing adhesive with excellent bonding strength between metal foil and biaxially oriented polyamide film, a laminate bonded with the adhesive, and a packaging material. [Solution] A two-component curing adhesive comprising a polyisocyanate compound (A), a polyol compound (B), and a modified silicone compound (C), wherein the polyol compound (B) comprises at least one selected from polyester polyol (B1) and polyester polyurethane polyol (B2); a laminate bonded with the adhesive; and a packaging material.