Abstract: The present invention provides a methyl fructoside polyether amine, a preparation method therefor and use thereof, According to the methyl fructoside polyether amine, as a derivative of an alkyl glycoside, provided by the present invention, polyoxyethylene or polyoxypropylene chain links are introduced on the basis of retaining the advantages of safety, no toxicity, no irritation to skin, good biodegradability, good compatibility and the like of the alkyl glycoside, so that the water solubility, flowability and hard water resistance of a product are improved. The methyl fructoside polyether amine has a more excellent emulsifying property, meets the requirements of “green” and “environmental protection”, can be used as an emulsifier, a detergent, a foaming agent, a humectant, a thickening agent, a wetting agent, a dispersing agent, a penetrating agent and the like, and is widely used in the daily chemical industry, especially in the field of detergents.

Abstract: Provided are a reductive amination catalyst for preparation of polyether amine and its preparation method. According to the reductive amination catalyst, a reductive amination reaction includes: enabling polyether polyols to undergo a hydroamination reaction in presence of the reductive amination catalyst to prepare polyether amine. The reductive amination catalyst includes an MgAl2O4 carrier, Ni, Pd and Cu active components loaded thereon. ?-Al2O3 modified by MgO is used as the carrier for the amination catalyst, and the modified MgAl2O4 carrier has characteristics of high temperature resistance, high mechanical strength and low surface acidity, which can better adapt to the high temperature and high pressure reaction conditions required for low-carbon alkane dehydrogenation. In presence of the catalyst, the temperature of a reaction system is low, and the activity or selectivity of the catalyst is suitable for oligomeric oxypropylene ether.

Abstract: The disclosure belongs to the technical field of organic macromolecule compound preparation, and discloses a fatty alcohol polyether amine polyether and a preparation method and application thereof. The method includes: using a fatty alcohol as an initiator, and adding a first epoxy compound for a polymerization reaction to obtain a fatty alcohol polyether; then, taking a hydroamination reaction between the fatty alcohol polyether and liquid ammonia to obtain a fatty alcohol polyether amine; and finally, taking a polymerization reaction between the fatty alcohol polyether amine and a second epoxy compound to obtain the fatty alcohol polyether amine polyether. The fatty alcohol polyether amine polyether prepared by the disclosure has the advantages of safety, nontoxicity, no skin stimulation, biodegradability, high compatibility, green and environmental-friendly effects, etc., and can be used for preparing quaternary ammonium salt intermediate products and various industrial solvents.

Abstract: The present application discloses a low-viscosity silane-terminated resin for a sealant and a preparation method thereof, and belongs to the technical field of sealants. The present application firstly uses an alcohol initiator, an alkaline earth metal and epoxy alkane to synthesize a low-molecular-weight polymer, then adds a polymetallic cyanide catalyst and the epoxy alkane to synthesize a high-molecular-weight polymer, and finally adds carboxylate metal and isocyanate silane to react to obtain the silane-terminated resin. A short chain segment is successfully introduced into a molecule, and an original molecular crystal is destroyed, to achieve intramolecular plasticization, so that its molecular chain becomes flexible and is easy to move, thus the purpose of reducing viscosity is achieved.

Abstract: The present disclosure relates to an amination production method of micromolecular polyoxypropylene ether, belonging to the technical field of preparation or chemical processing of organic compounds.

Abstract: Disclosed are to a supported catalyst used for synthesizing polyether amine, and a preparation method and use thereof. The supported catalyst introduces Mo and CeO2 into Ni and Cu active components. By means of the cooperation of Ni, Cu and Mo, CeO2 and Ni form more active sites, such that the supported catalyst can have high reaction activity and selectivity. By using the supported catalyst to synthesize polyether amine, the amination efficiency and selectivity of polyether polyol can be greatly enhanced, thereby preparing the polyether amine with light color and narrow molecular weight distribution. In addition, the cost of the catalyst can be reduced, a process condition is relatively mild, and the disadvantage of low reaction activity of a nickel-based catalyst in synthesizing small molecule polyether amine can be overcome, such that the supported catalyst has a desirable industrial application prospect.

Abstract: Related are a high-molecular weight allyl alcohol polyoxyethylene polyoxypropylene ether and a preparation method. During preparation, an allyl alcohol raw material and a supported catalyst Rb-NHPA are firstly added into a high-pressure reaction kettle, and it is heated after being replaced with a nitrogen gas; then after the internal temperature of the reaction kettle is raised to a reaction temperature, an ethylene oxide (EO) and propylene oxide (PO) mixture is continuously fed for a reaction; and finally, after the internal temperature of the reaction kettle is reduced, an acetic acid is dropwise added into the reaction kettle so that the crude product of the high-molecular weight allyl alcohol polyoxyethylene polyoxypropylene ether is neutralized to be neutral. The refining process of a polyether is omitted, the process flow is greatly simplified, and the process time is effectively saved. In addition, the supported catalyst Rb-NHP may be recycled.

Abstract: A light board structure includes a board body, a wireless transceiver module and a light-emitting member. The wireless transceiver module and the light-emitting member are both installed on the board body. The wireless transceiver module has a feeder wire and a ground wire. The board body has a collision avoidance area, which runs through the board body and disposed to avoid collision with the wireless transceiver module and the light-emitting member. The feeder wire and the ground wire are positioned on a side of the collision avoidance area. The collision avoidance area is configured to emit a radio wave, and solve a problem that the communication distance of a light board structure is short. A light fixture having the light board structure includes an installation cavity. The collision avoidance area of the light board structure matches an inner wall of the installation cavity to form a collision avoidance channel.

Abstract: A light board structure includes a board body, a wireless transceiver module and a light-emitting member. The wireless transceiver module and the light-emitting member are both installed on the board body. The wireless transceiver module has a feeder wire and a ground wire. The board body has a collision avoidance area, which runs through the board body and disposed to avoid collision with the wireless transceiver module and the light-emitting member. The feeder wire and the ground wire are positioned on a side of the collision avoidance area. The collision avoidance area is configured to emit a radio wave, and solve a problem that the communication distance of a light board structure is short. A light fixture having the light board structure includes an installation cavity. The collision avoidance area of the light board structure matches an inner wall of the installation cavity to form a collision avoidance channel.

Abstract: Related are a high-molecular weight allyl alcohol polyoxyethylene polyoxypropylene ether and a preparation method. During preparation, an allyl alcohol raw material and a supported catalyst Rb-NHPA are firstly added into a high-pressure reaction kettle, and it is heated after being replaced with a nitrogen gas; then after the internal temperature of the reaction kettle is raised to a reaction temperature, an ethylene oxide (EO) and propylene oxide (PO) mixture is continuously fed for a reaction; and finally, after the internal temperature of the reaction kettle is reduced, an acetic acid is dropwise added into the reaction kettle so that the crude product of the high-molecular weight allyl alcohol polyoxyethylene polyoxypropylene ether is neutralized to be neutral. The refining process of a polyether is omitted, the process flow is greatly simplified, and the process time is effectively saved. In addition, the supported catalyst Rb-NHP may be recycled.

Abstract: The present invention relates to a method for preparing a polyether amine catalyst, and polyether amine. A polyether amine catalyst is a supported metal catalyst; ?-Al2O3 is used as a carrier; basic cupric carbonate, basic nickel carbonate and basic cobalt carbonate are used as precursors of supported metals; and the polyether amine catalyst is prepared by performing twice adsorption roasting and once reduction by means of an equivalent-volumetric impregnation method. Easier decomposition is achieved by using basic carbonate, and only water and carbon dioxide are generated, such that processes and costs for treating waste gases can be saved. By using the polyether amine catalyst to prepare polyether amine, a conversion rate and primary amine selectivity can be improved, and the color of products can be reduced. Therefore, the obtained polyether amine can have higher activity and wider application.

Abstract: The present invention relates to a supported catalyst used for synthesizing polyether amine, a preparation method, and an application. The supported catalyst introduces Mo and CeO2 into Ni and Cu active components. By means of the cooperation of Ni, Cu and Mo, CeO2 and Ni form more active sites, such that the supported catalyst can have high reaction activity and selectivity. By using the supported catalyst to synthesize polyether amine, the amination efficiency and selectivity of polyether polyol can be greatly enhanced, thereby preparing the polyether amine with light color and narrow molecular weight distribution. In addition, the cost of the catalyst can be reduced, a process condition is relatively mild, and the disadvantage of low reaction activity of a nickel-based catalyst in synthesizing small molecule polyether amine can be overcome, such that the supported catalyst has a desirable industrial application prospect.

Abstract: Provided are a system and a method for preparing a polyether amine by catalytic amination of a polyether diol. The preparation method includes: filling a catalyst into the fixed bed reactor; pressurizing the internal pressure of the fixed bed reactor to 10˜13 MPa by a hydrogen gas, and raising the temperature of the fixed bed reactor to 150˜185° C.; adjusting the temperature of the multi-stage preheater so that the feeding temperature of a raw material reaches 125˜135° C.; and simultaneously feeding a polyether diol, liquid ammonia and the hydrogen gas into the multi-stage preheater, and after mixing and preheating, introducing into the fixed bed reactor from the feed inlet of the fixed bed reactor for a continuous catalytic amination reaction. The total amine value of the polyether amine finally obtained by the present invention reaches 28˜32 mgKOH/g, the color reaches 10˜20, and it is colorless transparent liquid.

Abstract: The present disclosure discloses a synthesis method of polyether for a low-modulus sealant, belonging to the technical field of organic compound synthesis. In the synthesis method of the present disclosure, a reaction is performed by using a mixture of monohydric alcohol polyoxypropylene ether and polyhydric alcohol polyoxypropylene ether as a starter, using epoxypropane as a chain extender and adding a metal complex catalyst, so as to obtain the polyether for the low-modulus sealant after the reaction is ended. The polyether prepared in the present disclosure can not only well enhance the rigid strength of the sealant but also reduce the elasticity modulus of the sealant, overcoming the problem that the existing polyether silane modified sealant is high in modulus. The synthesis method of the present disclosure is simple in synthesis process, easy to produce and control, short in production period and low in energy consumption.

Abstract: The disclosure provides a preparation process of an allyl alcohol polyether with a low potassium and sodium content, comprising the following steps: reacting allyl alcohol with a mixture of epoxypropane and oxacyclopropane to prepare an allyl alcohol oligomer crude product with a molecular weight of 150-1500; reducing the total content of potassium and sodium ions in the allyl alcohol oligomer crude product prepared in step S1 to 2 ppm or less through a cation exchange resin; and reacting the allyl alcohol oligomer product treated in step S2 with the mixture of epoxypropane and oxacyclopropane to prepare allyl alcohol high-molecular-weight polyether with a molecular weight of 2000-5000. According to the present disclosure, the total content of potassium and sodium ions in the product is reduced to 2 ppm or less, and the product has a good double bond protection rate.

Abstract: The present invention relates to a method for preparing 2-methylallyl chloride from 1,2-dichloroisobutane. The method is characterized in that 1,2-dichloroisobutane and a sodium hydroxide aqueous solution are used as raw materials; reactive rectification is performed in a combined rectifying tower to eliminate hydrogen chloride so as to obtain 2-methylallyl chloride. A plate tower is provided at the lower part of the combined rectifying tower; a packing tower is provided at the upper part of the combined rectifying tower; an inner reflux condenser is provided at the top of the combined rectifying tower. The sodium hydroxide aqueous solution is added from a first plate of the plate tower; and 1,2-dichloroisobutane is added from the middle part of the plate tower. The method has the advantages that the raw material 1 and 1,2-dichloroisobutane is fully converted; the selectivity of the 2-methylallyl chloride is high.

Abstract: The present invention relates to a method for preparing 2-methylallyl chloride from 1,2-dichloro-tert-butane. The method is characterized in that 1,2-dichloro-tert-butane and a sodium hydroxide aqueous solution are used as raw materials; reactive rectification is performed in a combined rectifying tower to eliminate hydrogen chloride so as to obtain 2-methylallyl chloride. A plate type tower is provided at the lower part of the combined rectifying tower; a packing tower is provided at the upper part of the combined rectifying tower; an inner reflux condenser is provided at the top of the combined rectifying tower. The sodium hydroxide aqueous solution is added from a first plate of the plate type tower; and 1,2-dichloro-tert-butane is added from the middle part of the plate type tower. The method has the advantages that the raw material 1 and 1,2-dichloro-tert-butane is fully converted; the selectivity of the 2-methylallyl chloride is high.

Abstract: A Reticulocyte Growth Factor (RGF) and a preparing method and application thereof is provided. The factor is separated and purified from impurities of ?1-antitrypsin (from human plasma), and the fragment of a precursor of the antitrypsin is determined, and has very high function of promoting the generation of the reticulocyte of mice. Monoclonal antibody of EPO is not combined with the reticulocyte growth factor, which is labeled with I125, after the reticulocyte growth factor is combined with surface receptors of mouse bone marrow cells, the EPO cannot compete with the reticulocyte growth factor. The EPO and RGF are labeled with different fluorochromes, and it is proved that they have different receptors.