235 results about "Hydroxy compound" patented technology

The invention discloses a low-staining low-viscosity waterborne polyurethane macromolecular coloring agent and a preparation method of the low-staining low-viscosity waterborne polyurethane macromolecular coloring agent. Comprising the following components in parts by weight: 15 to 30 parts of aliphatic diisocyanate, 15 to 30 parts of micromolecular dye, 10 to 30 parts of polypropylene glycol and / or dihydroxy silicone oil, 25 to 50 parts of polyethylene glycol, 1 to 3 parts of micromolecular dihydroxy compound chain extender, 0.05 to 0.3 part of catalyst, 90 to 140 parts of acetone and 50 to 300 parts of water. By designing the hydrophilicity and proportion of the soft and hard segments of the polyurethane coloring agent, the waterborne polyurethane macromolecular coloring agent color paste which is low in staining, easy to clean, less than 1000mpas in product viscosity, more than 5% in color concentration and more than 5% in dye equivalent and good in compatibility is finally obtained, and the waterborne polyurethane macromolecular coloring agent color paste can meet the requirements of liquid product coloring agents such as clothing care and household cleaning agents. The cleaning agent can also be used for liquid cleaning agent products for body care and catering.

The invention relates to a high-strength wear-resistant archaized brick and a preparation method thereof, and belongs to the technical field of archaized bricks, the high-strength wear-resistant archaized brick comprises the following raw materials: 25-30 parts of fly ash, 30-35 parts of superfine slag powder, 30-35 parts of clay, 8-10 parts of coke powder, 10-12 parts of diatomite, 12-15 parts of potassium feldspar, 10-15 parts of a modified binder and 8-12 parts of a reinforcing agent; according to the technical scheme, a polyhydroxy compound is combined with a silanization reinforcing filler, then combined with an anhydride compound and then combined with novolac epoxy resin, then an amine curing agent is added, and curing is conducted to obtain the modified binder; fly ash, superfine slag powder, clay and coke powder are subjected to ball milling, diatomite, potassium feldspar, a modified binder and a reinforcing agent are added, and the high-strength wear-resistant archaized brick is obtained through stirring, calcining and compression molding. The mechanical property, thermal stability and wear resistance of the archaized brick are improved on the whole, the densification degree of the archaized brick is enhanced, and the comprehensive performance is good.

The invention relates to an automobile scratch-resistant protective film and a preparation method thereof, and belongs to the technical field of automobile protective materials. The material is prepared from modified nano aluminum oxide, modified polyurethane acrylate, polyurethane acrylate, a photoinitiator, a flatting agent, an antioxidant and a solvent, the modified nano aluminum oxide is prepared through an esterification reaction of nano alpha-Al2O3 and stearic acid, and the hardness and wear resistance of a coating are enhanced; and the modified polyurethane acrylate is prepared by reacting a polyurethane prepolymer with a hydroxyl compound, so that the interface bonding force with the nano particles and the flexibility of the coating are improved. The preparation method comprises the following steps: dispersing modified nano aluminum oxide into a solvent, sequentially adding other components, and uniformly mixing to obtain functional coating slurry; the surface of a PET base material is coated with the slurry, and ultraviolet curing molding is performed after pre-drying. The prepared protective material has the characteristics of high hardness, scratch resistance, strong adhesive force with automobile paint and excellent weather resistance, and is suitable for automobile surface protection.

The invention belongs to the technical field of flexible freight bags, and particularly relates to a high-barrier sealed waterproof multilayer food flexible freight bag and a preparation method thereof. The multi-layer container bag for food comprises an antibacterial inner layer, a barrier middle layer and a waterproof outer layer, the antibacterial inner layer comprises titanium dioxide modified aramid pulp coated with polyethylene and a chitosan intercalation dihydroxy compound in a mass ratio of (10-15): 1; the barrier middle layer comprises an ethylene-vinyl alcohol copolymer, an ethylene-vinyl acetate copolymer and erucic acid modified nano silicon dioxide in a mass ratio of (86-93): (5-10): (2-4); and the waterproof outer layer comprises polypropylene. The container bag provided by the invention has excellent antibacterial, puncture-resistant, barrier and waterproof functions, can be used as an inner bag of the container bag for food, is used for transporting and storing food, and prolongs the shelf life of the food.

The invention provides a preparation method of a formaldehyde-free veneer artificial board, which comprises the following steps: (1) an adhesive is applied to the surface of a veneer, the adhesive is composed of a part A and a part B. The part A is one or more of isocyanate or modified isocyanate, or a mixture of the isocyanate and one or more of dimorpholinyl diethyl ether and sulfolane, or a mixture of the isocyanate and the modified isocyanate, or a mixture of the isocyanate and the modified isocyanate, or a mixture of the isocyanate and the modified isocyanate and one or more of dimorpholinyl diethyl ether and sulfolane, or a mixture of the isocyanate and the modified isocyanate; the part B is a hydroxyl-terminated compound or a mixture of the hydroxyl-terminated compound, a catalyst and one or more of sulfolane, preferably, the glue applying amount of the part B in different layers of veneers is different, and the applying amount is gradually increased from the surface layer veneer to the core layer veneer; (2) forming a plate blank by the veneers according to a certain rule; and (3) feeding the plate blank into a hot press to prepare the formaldehyde-free added veneer type artificial board. The method for producing the formaldehyde-free veneer type artificial board is simple and easy in process, high in hot-pressing production efficiency, excellent in mechanical property, good in flatness and low in warping degree, and can resist boiling in boiling water for 72 hours.

The invention relates to the technical field of batteries, in particular to a binder for a silicon negative electrode and a preparation method of the binder. The embodiment of the invention provides a preparation method of a binder for a silicon negative electrode, which comprises the following steps: preparing a premixed solution A: adding a boron-containing compound into an aqueous solution of a hydroxyl-containing compound, and stirring and mixing to form the premixed solution A; preparing a premixed solution B: dissolving a hard monomer and a soft monomer in water to form the premixed solution B; the premixed solution A and the premixed solution B are mixed to form a mixed solution C, an initiator is added to enable the mixed solution C to be subjected to a copolymerization reaction, and the binder is prepared through the copolymerization reaction of the mixed solution C. The binder prepared by the method has excellent elasticity, toughness, rigidity and mechanical properties.

The invention provides a composite surfactant for oil displacement of a hypersalinity oil reservoir and a preparation method of the composite surfactant, and relates to the technical field of petrochemical engineering. The composite surfactant is prepared from the following components in percentage by weight: 0.1 to 0.3 percent of anionic-nonionic surfactant, 0.01 to 0.03 percent of cationic surfactant and the balance of formation water, wherein the anionic-nonionic surfactant is prepared by the following steps: reacting a hydroxyl-containing compound with ethylene oxide to obtain polyoxyethylene ether, then carrying out esterification modification by using aconitic acid modified rosin, then sulfonating by using a sulfonating agent, and finally neutralizing. The composite surfactant shows relatively low interfacial tension under the condition of hypersalinity (50000-200000 mg / L), is high in stability, and can be used for improving the recovery efficiency of hypersalinity oil reservoirs.

The invention discloses an oil-soluble composition containing recombinant collagen. The composition comprises recombinant collagen, a polyhydroxy compound, grease, an emulsifier and water. The invention also provides a preparation method of the composition. The composition disclosed by the invention has the characteristics of good transparency, high drug loading capacity, good adaptability and good stability.

The invention relates to the technical field of semiconductor cleaning agents, and particularly discloses an etching solution for SiC surface silicon and a preparation method of the etching solution. The etching solution for SiC surface silicon comprises an aqueous solution of a component A and an aqueous solution of a component B. The component A comprises the following raw materials in parts by weight: 3-8 parts of nitric acid, 1-2 parts of hydrofluoric acid, 0.5-1 part of a complexing agent and 0.1-1 part of a surfactant; the raw materials of the component B comprise modified citric acid and citric acid in a mass ratio of (2.2-5.7): (1-1.8), and the modified citric acid is obtained by modifying a dihydroxy compound. The etching solution for the SiC surface silicon has higher selectivity on the SiC substrate surface silicon and other impurities, the etching effect and the etching rate of the etching solution on the SiC surface silicon are effectively improved, the loss of the SiC substrate is reduced, and the problem of environmental pollution is also reduced.

The invention discloses application of a firming and stability-maintaining periocular conditioning composition in skin care products, and the firming and stability-maintaining periocular conditioning composition is used for improving fragrance and promoting absorption. The composition prepared by compounding the specific components including the barrier repairing agent, the emollient, the hydroxyl compound, the surfactant, the thickener and the chelating agent in proportion has good heat resistance and cold resistance, is good in stability, can be stored for a long time, can promote regeneration of eye skin cells, keeps and regulates skin moisture, recovers skin elasticity, and has a good application prospect. The eye cream has the effects of whitening skin, delaying body aging, resisting oxidation, whitening skin, resisting inflammation and bacteria, inhibiting formation and precipitation of melanin in skin, effectively removing dark circles, minimizing pores and tightening eye skin. Besides, when the composition is used for an eye skin care product, the composition is good in fragrance, fast in absorption and smooth in smearing, the mud rubbing phenomenon is avoided, the situation that fine lines of eyes are further deepened due to the fact that the force is difficult to control in the smearing process is avoided, and the multiple requirements for wrinkle resistance, dark circle removal and the like of different skin types can be met.

The invention discloses a high edge protection type cathode electrophoretic coating and a preparation method thereof. Epoxy resin and a cyclic hydroxyl compound are subjected to a chain extension reaction, and a cyclic substituent group is introduced; adding amine chain extension reactants containing multiple active hydrogen into the chain extension product to form a local branched structure; the preparation method comprises the following steps: carrying out amination modification by adopting an aliphatic micromolecular amine mixture to obtain modified epoxy resin with a short-chain comb-type branched structure; sequentially adding a curing agent, a reinforcing material and a neutralizer, and continuously stirring to form a stable resin emulsion; and mixing the color paste, the resin emulsion and pure water according to a mass ratio to obtain the coating. By optimally designing the resin structure, on one hand, coating film flowing in the curing process is inhibited, sufficient film thickness and protection force of the edge are ensured, and on the other hand, when the edge corrosion resistance is improved, the mechanical performance, chemical performance and appearance quality of a coating in a non-edge area are prevented from being sacrificed, the overall performance is cooperatively improved, and the multi-working-condition service requirement of an automobile is met.

The invention discloses foamed 3D printing elastomer photosensitive resin and a preparation method, and relates to the technical field of additive manufacturing materials. The thermal-expansion polyurethane acrylate composite material is prepared from the following materials in parts: 400 to 700 parts of a polyurethane acrylate oligomer containing dynamic oxime ester bonds and acrylate groups, 200 to 500 parts of a reactive diluent, 50 to 200 parts of thermal-expansion microspheres, 10 to 50 parts of a photoinitiator and 1 to 50 parts of a stability auxiliary agent, the polyurethane acrylate oligomer containing the dynamic oxime ester bond and the acrylate group is prepared by reacting isocyanate, polyol, a compound containing oxime hydroxyl and an acrylate end-capping reagent. According to the 3D printing elastomer photosensitive resin and the preparation method thereof, by introducing dynamic oxime ester bonds, controllable foaming of the material in the heat treatment process is achieved, the technical bottleneck that traditional light-cured resin is large in foaming difficulty is broken through, the material is endowed with the excellent lightweight characteristic through design, good mechanical performance and heat stability are kept, and the 3D printing elastomer photosensitive resin is suitable for 3D printing. The high requirement on the material performance is met.

The objective of the present invention is to provide a method for producing a polycarbonate safely and efficiently even without using a base. The method for producing a carbonate derivative according to the present invention is characterized in comprising the step of irradiating a high energy light to a composition comprising the halogenated methane and the hydroxy group-containing compound in the presence of oxygen, wherein a molar ratio of a total usage amount of the hydroxy group-containing compound to 1 mole of the halogenated methane is 0.05 or more.

The invention discloses a method for repairing cracks of cultural relics, a repairing coating and a method, and relates to the technical field of cultural relic repairing. The preparation method of the repair coating comprises the following steps: step 1, mixing isocyanate and a hydroxyl compound in an inert gas atmosphere, and reacting the isocyanate and the hydroxyl compound under a first reaction condition to generate a first intermediate product; step 2, adding a sulfhydryl compound into the first intermediate product to obtain a mixture, dropwise adding an oxidizing agent into the mixture under a second reaction condition, and reacting the mixture in the dropwise adding process to generate a second intermediate product; and 3, carrying out emulsification treatment and pH value adjustment on the second intermediate product to obtain a waterborne polyurethane dispersion liquid, and sequentially carrying out filtration and solid content adjustment on the waterborne polyurethane dispersion liquid to obtain the repair coating. The repairing coating disclosed by the invention has efficient self-repairing capability, and the repairing coating contains disulfide bonds, so that the repairing coating realizes fracture and recombination under mild conditions.

The present invention discloses acetylene carbon black for bridging modified fibers, a preparation method thereof, and applications thereof. The preparation method comprises: blending 1,6-diisocyanate, hydroxyl-functionalized fiber, and acetylene carbon black in a mass ratio of (0.05-0.5):(1-20):100, and reacting the mixture to obtain the obtained product. The present invention uses 1,6-diisocyanate and hydroxyl-functionalized fiber to modify the acetylene carbon black. The hydroxyl-functionalized fiber having an excellent aspect ratio and the acetylene carbon black having a hydroxyl functional group are bridged under the connection of 1,6-diisocyanate. The acetylene carbon black is loaded on the hydroxyl-functionalized fiber. The isocyanate group in the 1,6-diisocyanate has high activity. When it reacts with a hydroxyl compound, it can generate a polyurethane. This polyurethane has high strength and rigidity, can withstand large forces, has good wear resistance and corrosion resistance, maintains stable performance in long-term use, and enables the acetylene carbon black to be firmly loaded on the surface of the hydroxyl-functionalized fiber, thereby enhancing the compatibility of the material.

A polishing liquid for CMP, the polishing liquid containing abrasive grains, a nitrogen-containing compound, and water, in which the abrasive grains include cerium-based particles, and the nitrogen-containing compound includes a compound A1 having a fused ring (a fused ring having an aromatic five-membered ring with one nitrogen atom), a compound A2 having a quinoline ring and one hydroxy group bonded to the quinoline ring, a compound A3 having an aromatic ring and a hydroxy group bonded to a nitrogen atom, or a compound A4 having a nitrogen-containing aromatic ring to which at least one selected from the group consisting of a hydroxy group and an amino group is bonded.

A process for the production of a C6-18 alkyl ester of 4-aminobenzoic acid of formula (I), wherein the process comprises the step of reacting the 4-aminobenzoic acid of formula (II) with an hydroxy compound of formula (III) in the presence of a catalyst to generate a C6-18 alkyl ester of 4-aminobenzoic acid of formula (I) wherein R is a C6-18 alkyl group; and wherein the catalyst is a titanium catalyst, preferably a titanium alkoxide catalyst.

The invention belongs to the technical field of silica gel, and particularly relates to silica gel capable of rapidly absorbing water as well as a preparation method and application thereof. The silica gel capable of rapidly absorbing water is prepared by carrying out a thiol-ene click reaction on silochrom loaded with a polyhydroxy compound and silochrom loaded with polydopamine. The silica gel provided by the invention has relatively high water absorption rate while rapidly absorbing water, and also has good regeneration performance.

Polymeric materials which inter alia may be used as binder materials for energetic materials and to improved energetic materials containing such a binder and a process for the manufacture of these novel polymeric materials wherein the polymeric material comprising a hydroxyl group containing compound reacted with a cross-linking agent having at least two reactive groups per molecule at least one of which is reacted with one or more hydroxyl groups of the hydroxyl containing compound and at least another of the reactive groups is reacted with a hydroxyl group of a hydroxyl containing rosin ester resin.

The invention provides a six-membered sultam derivative as well as an electrochemical synthesis method and application thereof, and a 2-isoallylbenzenesulfonamide derivative and a hydroxyl-containing compound are electrified and reacted in an electrolyte to obtain the six-membered sultam derivative. The electrolyte comprises 2, 2, 6, 6-tetramethylpiperidine and an electrolyte tetrabutylammonium tetrafluoroborate; compared with the prior art, the sultam derivative can be obtained through reaction under the electrochemical condition, no oxidizing agent or reducing agent is needed in the reaction, no metal catalyst or high temperature is needed, synthesis steps are simple, side reactions are few, the yield of the target product is high, and the method can be used for industrial production.

The invention provides a poly-L-lactic acid polymer and a preparation method thereof, and the method comprises the following steps: replacing halogen atoms in a catalyst with an initiator containing a hydroxyl compound to generate an alkoxy compound Bi-OR, and then carrying out a polymerization reaction with L-lactide to obtain the high-molecular-weight poly-L-lactic acid polymer. The catalyst has high tolerance to water and free acid, the requirements for the free acid and the water content of the L-lactide are reduced, the L-lactide with high free acid and water content can be directly used, and the refining cost of the L-lactide is greatly reduced. The specific rotation of the poly-L-lactic acid polymer prepared by the method meets the standard, the poly-L-lactic acid polymer has high tolerance to moisture and free acid, the catalytic efficiency is high, the process stability is good, and the molecular weight can be regulated and controlled through the dosage of the initiator.

The present disclosure provides a two-part composition polymeric material including a first part and a second part. The first part includes an inorganic filler and a polymeric material including a polymerized reaction product of a polymerizable composition including components. The components include a uretdione-containing material including a reaction product of a diisocyanate reacted with itself; a first hydroxyl-containing compound; and an optional second hydroxyl-containing compound having a single OH group. The second part includes a polythiol having an average sulfhydryl group functionality of 2 or greater. Further, a method of adhering two substrates is provided, including obtaining a two-part composition; combining at least a portion of the first part with at least a portion of the second part to form a mixture; disposing at least a portion of the mixture on a first substrate; and contacting a second substrate with the mixture disposed on the first substrate. The disclosure also provides a polymerized product of the two-part composition and a battery module. Advantageously, two-part compositions can be used as coatings and adhesive systems including high loadings of inorganic filler, such as thermally conductive filler, with handling and performance similar to existing two-part urethane systems, but with less sensitivity to water.

The application relates to the technical field of polyols, and particularly discloses a high-functionality plant phenol-based polyether polyol, a preparation method thereof and a polyurethane adhesive. The high-functionality plant phenol-based polyether polyol is prepared from plant phenol glycidyl ether and a dihydroxyl compound with a molar ratio of 1:(1.8-2.2). The preparation method comprises the following steps: obtaining a polyol intermediate by reacting the plant phenol glycidyl ether and the dihydroxyl compound under the action of a first catalyst, and then obtaining the product by reacting the polyol intermediate under the action of a second catalyst. The high-functionality plant phenol-based polyether polyol has multiple high-reactivity hydroxyl groups, significantly improves the hydroxyl content and the reactivity of a plant phenol-based high-molecular material, and widens the application range.

The present invention provides a method (600a) and apparatus for producing an alkaline mixture comprising sodium silicate, which mixture is suitable for use as an alkaline activator for alkaline activated and geopolymer cements, but which may also be used, for example, to mineralize captured carbon dioxide. The method comprises comminuting (301) an ore of a target metal into fines, wherein the ore comprises a siliceous mineral and at least one of iron and manganese as the target metal. The siliceous mineral may comprise the target metal itself and / or it may be silica and / or another silicate mineral present as gangue. The ore is dehydrated and hydroxylated compounds contained therein are dehydroxylated (302). The ore thus treated is then reacted (601) in an inert atmosphere with an amount of liquid sodium in excess of the stoichiometric amount thereof required for a redox reaction between the liquid sodium and an oxide of the target metal from the ore, to precipitate out from the liquid sodium a solid phase comprising both the target metal in elemental form and other insoluble products comprising sodium oxide. The redox reaction is conducted at a temperature of at least 320 °Celsius to induce a reaction between the sodium oxide and silica derived from the siliceous mineral to produce sodium silicate, but also below a temperature at which the liquid sodium can react with the oxide of the target metal to produce a ternary oxide thereof. At least some of the liquid sodium having sodium silicate dissolved therein is then separated (305) from the solid phase and is reacted (602) with at least one of oxygen and water to produce a mixture comprising sodium silicate and at least one of sodium oxide and sodium hydroxide. The corresponding apparatus comprises a comminution device (such as a rock crusher or grinder), means for dehydrating and dehydroxylating the ore (such as a dryer), a gas-tight first reaction vessel for reacting the ore thus treated with the liquid sodium, a solid-liquid sodium phase separator, and a second reaction vessel for reacting the liquid sodium having sodium silicate dissolved therein with at least one of oxygen and water. The resulting alkaline mixture is therefore produced whilst extracting the target metal in elemental form from its ore. Thus the energy consumed is split between the production of these two co-products, making the method of the invention a low-energy method of producing an alkaline activator for alkaline activated and geopolymer cements. Both reactions (601, 602) are also significantly exothermic and at least some of the thermal energy from them may be recycled. The invention does not consume any carbon and is therefore at least carbon-neutral. On the other hand, it consumes the silica content of gangue mineral species and / or of siliceous minerals of the target metal in its ore, which have previously been treated as waste products. The amount of waste material produced when extracting the target metal from its ore is thereby reduced as well.

The invention discloses a cross-linked polyurethane material plasticizing transformation method, a prepared regenerated polyurethane material and application, and belongs to the technical field of high polymer materials. The cross-linked polyurethane material plasticizing transformation method provided by the invention comprises the following steps: by taking a boric acid compound, a hydroxyl compound and a cross-linked polyurethane material as raw materials, carrying out in-situ reaction on the boric acid compound and the hydroxyl compound to generate a boron-oxygen polymer, and then carrying out heat exchange reaction on the cross-linked polyurethane material and the boron-oxygen polymer to obtain the cross-linked polyurethane material. The regenerated polyurethane material is prepared. Based on the reaction principle of dynamic exchange between a borate bond and a carbamate bond, a borate cross-linked polymer is mixed into cross-linked polyurethane, a boron-oxygen covalent bond is implanted into a molecular chain segment of polyurethane through an exchange reaction, and an original irreversible cross-linked polyurethane network is converted into a reversible cross-linked polymer network, so that the reversible cross-linked polymer network is formed; therefore, repeated processing can be carried out, and plasticity is shown.

The application provides a modified organosilicon compound, a preparation method and application thereof, raw materials of the modified organosilicon compound include a hydroxyl-containing compound and an isocyanate single-terminated silane; the hydroxyl-containing compound includes a saturated fatty alcohol and / or a hydroxyl silicone wax. In the application, the modified organosilicon compound has good hydrophobicity and strong crosslinking capacity, can effectively improve the hydrophobicity, mechanical property and the like of a material, and obtain a material with more excellent comprehensive performance; and the raw materials of the modified organosilicon compound are widely sourced and low in price, thereby effectively reducing the production cost.

The invention belongs to the technical field of polymer synthesis, and discloses polyether as well as a preparation method and application thereof. The polyether has a structural general formula as shown in formula (I), n is an integer of 2-200, and R1 and R2 are the same or different organic groups. The preparation method comprises the following step: in an inert or air atmosphere, carrying out polymerization reaction on a binary alkyne aldehyde compound and a binary hydroxyl compound in an organic solvent to obtain the polyether. According to the invention, the alkyne aldehyde monomer is designed and synthesized, and the high reaction activity of the monomer enables the monomer to be polymerized with a hydroxyl compound under the condition of no metal catalysis. The method is simple and efficient, and the polymer with high molecular weight and good thermal stability can be synthesized. The obtained polyether contains an aldehyde group side chain, so that selective detection and high-sensitivity detection of hydrazine are realized; and the structure and the function of the polymer can be expanded through a post-modification way. Formula (I)

The invention provides a simple, low-consumption, short-range and efficient preparation method of a polyamide nanofiltration membrane and application of the polyamide nanofiltration membrane. The preparation method comprises the following steps: (1) cutting a polyethersulfone ultrafiltration base membrane, ultrasonically cleaning the polyethersulfone ultrafiltration base membrane with an ethanol solution, and soaking the polyethersulfone ultrafiltration base membrane in pure water; (2) fixing the base film on the frame; (3) mixing and dissolving an amino-hydroxyl compound in an ultra-low-concentration PIP solution to form a uniform water-phase reaction monomer solution, and contacting the water-phase reaction monomer solution with the front surface of the fixed base membrane; and (4) rapidly pouring an n-hexane oil-phase monomer solution containing trimesoyl chloride into the surface of the membrane to start short-range-efficient interfacial polymerization reaction. According to the invention, an amino-hydroxyl compound additive is used as an auxiliary agent, and through hydrogen-bond interaction and electrostatic interaction between a hydroxyl functional group of the amino-hydroxyl compound additive and an amino functional group on the PIP, the PIP is prepared; a hydrogen chloride byproduct generated in the interfacial polymerization reaction process is used for assisting in carrying the PIP water-phase monomer to move towards a water / oil interface and participate in the reaction through amino on the protonated amino-hydroxyl compound.

Aqueous treatment compositions for crude oil and / or petroleum distillates to remove sulfur compounds therefrom and treatment methods using such compositions are disclosed. The composition has less than 0.5% wt / wt di- or tri-benzohydroxy compound, a strong base, less than 1% wt / wt divalent metal gluconate, a balance of water, and a pH that is 9 or greater. The treatment method includes adding said treatment composition to crude oil or a petroleum distillate to form a mixture having 0.001% to 0.02% wt di- or tri-benzohydroxy compound / wt oil and 0.001% to 0.03% wt divalent metal gluconate / wt oil and mixing the same together.

The invention relates to the technical field of automobile coating rubber, in particular to high-viscosity anti-aging coating rubber and a preparation method thereof.The high-viscosity anti-aging coating rubber comprises a main agent and a curing agent, preparation raw materials of the main agent at least comprise an HDI end-capped modified hydroxyl mixture and modified amine, and the curing agent is a combination of an HDI tripolymer and an isophorone diisocyanate end-capped hydroxyl compound; the HDI-terminated modified hydroxyl mixture is prepared by terminating a modified hydroxyl mixture with HDI, and the modified hydroxyl mixture at least comprises the following preparation raw materials in parts by weight: 45-70 parts of an alcohol-terminated prepolymer, 30-50 parts of poly (1, 4-butylene adipate) glycol and 2-5 parts of 2, 2-dimethylolpropionic acid. By adopting the specific modified hydroxyl mixture, the modified amine and the curing agent, the main agent and the curing agent have longer service time after being mixed, meanwhile, the excellent initial bonding strength and low-temperature resistance of the product are ensured, and the actual application requirements are better met.