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104results about How to "Speed up progress" patented technology

Semiconductor device

A semiconductor device having a novel structure is provided in which a transistor including an oxide semiconductor and a transistor including a semiconductor material which is not an oxide semiconductor are stacked. Further, a semiconductor device in which a semiconductor element and a capacitor are formed efficiently is provided. In a semiconductor device, a first semiconductor element layer including a transistor formed using a semiconductor material which is not an oxide semiconductor, such as silicon, and a second semiconductor element layer including a transistor formed using an oxide semiconductor are stacked. A capacitor is formed using a wiring layer, or a conductive film or an insulating film which is in the same layer as a conductive film or an insulating film of the second semiconductor element layer.
Owner:SEMICON ENERGY LAB CO LTD

Method of reducing abeta42 and treating diseases

InactiveUS20080021085A1Increased risk of developingIncreased riskBiocideNervous disorderCholinesterase inhibitionRegimen
The invention provides a method of preventing, delaying, or reversing the progression of Alzheimer's disease by administering an Aβ42 lowering agent to a mammal under conditions in which levels of Aβ42 are selectively reduced, levels of Aβ38 are increased, and levels of Aβ40 are unchanged. The invention provides methods and materials for developing and identifying Aβ42 lowering agents. In addition, the invention provides methods for identifying agents that increase the risk of developing, or hasten progression of, Alzheimer's disease. The invention also provides compositions of Aβ42 lowering agents and antioxidants, Aβ42 lowering agents and non-selective secretase inhibitors, as well as Aβ42 lowering agents and acetylcholinesterase inhibitors. The invention also provides kits containing Aβ42 lowering agents, antioxidants, non-selective secretase inhibitors, and / or acetylcholinesterase inhibitors as well as instructions related to dose regimens for Aβ42 lowering agents, antioxidants, non-selective secretase inhibitors, and acetylcholinesterase inhibitors.
Owner:MAYO FOUND FOR MEDICAL EDUCATION & RES +1

Planting method capable of increasing sugar content of Hylocereus undulatus Britt

The invention discloses a planting method capable of increasing the sugar content of Hylocereus undulatus Britt. The planting method is characterized by comprising the steps of field selection, seedling growing, field planting, trimming and shaping, nutrient and water management, orchard management and pest control and prevention. According to the planting method, a bio-organic fertilizer and an active organic liquid fertilizer containing sugar are applied to the roots, the blade surfaces and fruits of Hylocereus undulatus Britt trees, so that the sugar content of the Hylocereus undulatus Britt is increased, the Hylocereus undulatus Britt tastes sweeter, the taste is enhanced, the fruit quality is improved, and then the current problem that the sugar content of the Hylocereus undulatus Britt is lower is solved. Besides, botanical insecticide and botanical insecticide deinsectization technologies are adopted, a better insecticidal effect is realized while the nutrient is guaranteed, and the economic benefit is very remarkable.
Owner:广西绿希望农业发展有限公司

Cooperative simulation/verification method and device for software and hardware

The invention discloses a cooperative simulation / verification method for software and hardware, which uses a software operating terminal to simulate CPU in SoC design to develop / operate the software and develops the software during hardware simulation / verification. The method comprises the steps of mapping the SoC design to a FPGA (Field Programmable Gata Array); connecting the SoC design to the software operating terminal through a bus main device and an FPGA communication device; developing the software required by the SoC design and operating the software at the software operating terminal to send an excitation signal to the SoC design; and responding to the excitation signal by the SoC design, wherein the responding signal is fed back to the software operating terminal. The invention discloses a cooperative simulation / verification device for software and hardware. The device comprises the FPGA mapped to the SoC design without the CPU and the software operating terminal having the software development function and / or operating function. The bus main device converts the read-write operation of the software to read-write operation of the bus.
Owner:HISENSE HIVIEW TECH CO LTD

Wind power plant cluster wind speed prediction method

The invention belongs to the wind power generation technical field, and especially relates to a wind power plant cluster wind speed prediction method comprising the following steps: a wind power plant clustering step; a wind speed correlation hierarchy analysis step; an adjacent wind power plant wind speed prediction step. The wind power plant cluster wind speed prediction method is strong in operationality and practicality, accurate and reliable in prediction result, thus greatly accelerating wind power engineering progress.
Owner:STATE GRID CORP OF CHINA +1

Planting method for improving sugar content of passion fruits

The invention relates to a planting method for improving the sugar content of passion fruits. The variety of the planted passion fruits is 'Tainong No.1', and the planting method comprises the steps of land selection, soil preparation, planting, frame erection, reshaping and pruning, fertilizer and water management, field management and prevention and control of diseases and insect pests. By the adoption of the planting method for improving the sugar content of the passion fruits, a fertilizer containing sugar and fermentation broth prepared through fermentation of human excrete and containing a sugar fertilizer are irrigated in a drop mode before blooming and during fruit forming, the average single-fruit weight of produced passion fruits is 63 g, the maximum weight is 125 g, fruit juice is reddish yellow and has heavy flavor, the acidity is 2.14%, the sweetness is up to 30% Brix, the fruit juice rate is up to 34%, color and luster are bright, the yield is high, no pollution exists, and five-time harvesting can be performed in one year.
Owner:广西绿希望农业发展有限公司

Method of reducing Abeta42 and treating diseases

The invention provides a method of preventing, delaying, or reversing the progression of Alzheimer's disease by administering an Aβ42 lowering agent to a mammal under conditions in which levels of Aβ42 are selectively reduced, levels of Aβ38 are increased, and levels of Aβ40 are unchanged. The invention provides methods and materials for developing and identifying Aβ42 lowering agents. In addition, the invention provides methods for identifying agents that increase the risk of developing, or hasten progression of, Alzheimer's disease. The invention also provides compositions of Aβ42 lowering agents and antioxidants, Aβ42 lowering agents and non-selective secretase inhibitors, as well as Aβ42 lowering agents and acetylcholinesterase inhibitors. The invention also provides kits containing Aβ42 lowering agents, antioxidants, non-selective secretase inhibitors, and / or acetylcholinesterase inhibitors as well as instructions related to dose regimens for Aβ42 lowering agents, antioxidants, non-selective secretase inhibitors, and acetylcholinesterase inhibitors.
Owner:MAYO FOUND FOR MEDICAL EDUCATION & RES +1

Tubule high-density type method for freezing pig jism and the products thereof

The invention discloses a high density freezing maintain pig seminal fluid method with fistula and product in animal propagation technical domain, which comprises the following steps: collecting fresh seminal fluid; detecting; pre-treating the seminal fluid; defreezing; proceeding assessment procedure of defreeze seminal fluid; diluting with freezing diluting liquid; storing with high density super low temperature with 0. 25mL fistula; stabilizing the defreezing sperm above 0. 5 and average active at 0. 58; reaching the highest at 0. 68; proceeding pig external fertilization with the sperm; getting 54. 3% cleavage ratio and 48. 5% morula developing ratio; meeting one sperm dosage with sperm quantity of one 0. 25mL fistula. This invention possesses larger using latent force and market developing prospect.
Owner:NANJING AGRICULTURAL UNIVERSITY

Method and device for accelerating web page rendering

The invention provides a method and device for accelerating web page rendering. The method comprises the steps of receiving a rendering instruction of a web page element; judging whether the web page element is cached in a video memory; if the web page element is cached in the video memory, then taking the web page element cached in the video memory as a rendering result, and ignoring the rending instruction; and or else, responding to the rendering instruction. The method and the device for accelerating the web page rendering provided by the invention can reduce the computing resources occupied by rendering, improve the rendering speed of web pages, and accelerate the display progress of similar web pages.
Owner:BEIJING CYBER CLOUD TECH

Method and solution for cleaning semiconductor device substrate

Provided is a method for cleaning a semiconductor device substrate, which is excellent in removability and re-adhesion-preventing properties of contaminations of fine particles or organic matter, metal contamination and combined contamination of organic matter and metal, which are adhered to a substrate surface, and which can highly clean the substrate surface without corroding it even when an intense ultrasonic wave is not applied.It is a method for cleaning a semiconductor device substrate, the method comprising cleaning the semiconductor device substrate while applying an ultrasonic wave having an intensity of 0.2 W or more and 1.5 W or less per cm2 of substrate to be irradiated with the ultrasonic wave by using a cleaning solution comprising the following components (A) to (D):(A) hydrogen peroxide,(B) an alkali,(C) water, and(D) a compound represented by the following general formula (1):R1—O—(—R2—O—)n—H(1)wherein R1 represents an alkyl group having 1 to 4 carbon atoms, R2 represents an alkylene group having 2 to 3 carbon atoms, and n represents an integer of 1 to 3.
Owner:MITSUBISHI CHEM CORP

Bioremediation method for petroleum contamination and its special strains

The invention discloses a bioremediation method for petroleum contamination and its special strains. The strains are (Alcaligenes xylosoxydans)H4-1 with the preservation number of CGMCC No.3235. The strains of the present invention has strong petroleum hydrocarbon degradation capability. The strains, inocula and its application method provide theoretical basis for the bioremediation work of the petroleum contamination soil in our country, have great significance for the environment protection work in the national oil field region and bioremediation work for the contamination due to leakage inthe petroleum transport process speed up the progress of the bioremediation work for petroleum contamination and have important economical significance.
Owner:ELION ECOLOGICAL RESTORATION +1

Artificial half-salt water ecological breeding method of enteromorpha

The invention discloses an artificial half-salt water ecological breeding method of enteromorpha. The method comprises the following steps: (1) preparing an artificial half-salt water culture solution for later use; (2) cleaning yellow green enteromorpha for several times, sucking dry the surface moisture, and semi-drying a drying box in which samples are positioned in the shade; (3) disinfecting enteromorpha samples semi-dried in the shade in artificial salt water containing an iodine solution for several minutes, after sheared algae section treatment, putting the samples into a culture vessel containing the artificial half-salt water culture solution and an attaching substrate, and sealing by using a preservative film; (4) culturing in an illumination incubator; (5) introducing zooplanktons and adding food yeasts after divergent enteromorpha spores or gametes are fully attached to the attaching substrate, so as to form an ecological breeding system in the culture vessel. The artificial half-salt water ecological breeding method of enteromorpha disclosed by the invention is easy to operate, has the advantages of readily available raw materials, low price, low cost and extensive culture and is particularly suitable for enteromorpha-related researches in inland areas or labs.
Owner:HANGZHOU ENJOY ENVIRONMENTAL PROTECTION TECH

Method of utilizing straw to produce biomass fuel, corrugated paper and organic fertilizer

The invention relates to a method of utilizing straw to produce biomass fuel, corrugated paper and organic fertilizer. The method includes: cutting the straw, dusting through a dry process and a waterfilm, washing through hot water extraction for desanding, continuously boiling for hydrolysis, blowing and receiving, performing multistage countercurrent washing, jordaning at high concentration, treating fiber in a staged manner, concentrating long fiber, curing the long fiber, jordaning the long fiber, and using the long fiber to produce the corrugated paper; concentrating the short fiber, subjecting fine and broken fiber to enzymolysis, fermentation and distillation to produce cellulose alcohol, and separating waste mash for utilization. By the method, high-value comprehensive utilizationof each component of the straw is realized, wastewater COD biochemical degradability is high, inorganic salt accumulation is avoided, biogas is produced by high-concentration wastewater in the process and purified as natural gas, and low-concentration wastewater is recycled after being treated, so that a water system is a closed cycle, and there is no wastewater emission; a fine and broken fibercomponent is large in specific surface area and high in enzymolysis efficiency; the corrugated paper produced by a long fiber component is high in strength and quality, and cost of the cellulose alcohol can be lowered; biological natural gas and biomass particle fuel can reduce consumption of mineral fuel.
Owner:吴学军 +5

Method for decomposing petroleum hydrocarbon and special bacterial strain thereof

The invention discloses a method for decomposing petroleum hydrocarbon and special bacterial strain thereof. The bacterial strain is bacillus sp. Z3-P, and the serial number of preservation thereof isCGMCC No.3254. The bacterial strain of the invention has strong capability of decomposing petroleum hydrocarbon. The bacterial strain, microbial inoculum and the application method thereof of the invention provides a theoretical basis for the task of bioremediation of petroleum polluted soil of China, and is of great importance on protecting the environment of oilfield regions and on carrying outthe task of remediating environment polluted by leakage in the process of petroleum transportation, thereby accelerating the development of the task of remediating petroleum polluted organisms and having high economic significance.
Owner:PEKING UNIV

Multi-level stacked transistor device including capacitor and different semiconductor materials

A semiconductor device having a novel structure is provided in which a transistor including an oxide semiconductor and a transistor including a semiconductor material which is not an oxide semiconductor are stacked. Further, a semiconductor device in which a semiconductor element and a capacitor are formed efficiently is provided. In a semiconductor device, a first semiconductor element layer including a transistor formed using a semiconductor material which is not an oxide semiconductor, such as silicon, and a second semiconductor element layer including a transistor formed using an oxide semiconductor are stacked. A capacitor is formed using a wiring layer, or a conductive film or an insulating film which is in the same layer as a conductive film or an insulating film of the second semiconductor element layer.
Owner:SEMICON ENERGY LAB CO LTD

Three-cavity cervix balloon dilatation device

PendingCN107670166AIncrease strengthReduce pain timeBalloon catheterDilatorsFull Term PregnancyInjections needle
The invention discloses a three-cavity cervix balloon dilatation device. The three-cavity cervix balloon dilatation device comprises a balloon set, a rubber tube, injection ports and plugs; a first end of the rubber tube is connected with the injection ports, the balloon set is arranged at a second end of the rubber tube, and a first balloon, a second balloon and a third balloon of the balloon setare arranged at the second end of the rubber tube in sequence; the rubber tube is composed of a protective outer tube and injection inner tubes, a first fixing opening, a second fixing opening and athird fixing opening are formed in the positions, located at the first balloon, the second balloon and the third balloon, of the rubber tube respectively, wherein the first fixing opening, the secondfixing opening and the third fixing opening are connected with one ends of the three injection inner tubes respectively, the other ends of the three injection inner tubes penetrate the protective outer tube and are fixedly connected with the injection ports, and needle cores are arranged on the injection ports. According to the three-cavity cervix balloon dilatation device, the capacity of cervical dilatation can be greater improved, and the device has high use value for labor induction of a full-term pregnant woman with an extremely low cervical score or labor induction of intermediate stagepregnancy.
Owner:孙利华

Methods for producing corrugated paper, natural gas and organic fertilizer from straws

The invention discloses methods for producing corrugated paper, natural gas and organic fertilizer from straws. The method for producing the corrugated paper includes: (1) cutting the straws; (2) dedusting by a dry method; (3) dedusting by a water membrane; (4) extracting and washing with hot water to remove sand; (5) hydrolyzing by continuous steaming; (6) sprinkling and collecting; (7) backwashing in multiple stages; (8) grinding into high-concentration liquid firstly; (9) ripening; (10) grinding into high-concentration liquid and low-concentration liquid; (11) producing the corrugated paper. The method for producing the natural gas includes the steps of: (1) subjecting high-concentration wastewater to anaerobic treatment; (2) subjecting the treated wastewater to aerobic treatment; (3) purifying marsh gas obtained from anaerobic treatment to obtain the natural gas. The method for producing the organic fertilizer is also provided. The methods for producing the corrugated paper, the natural gas and the organic fertilizer from straws are environmentally friendly, the wastewater obtained in the processes can be recycled, self-producing capability of pulp for industrial packing paperincluding the corrugated paper and the like can be improved, the difficulty of fibrous material shortage in our country can be alleviated, and reliance on imported waste paper can be reduced.
Owner:吴学军 +4

IL-6 gene SNP marker related to chronic hepatitis b virus (HBV) infection and application thereof

The invention relates to the individual susceptibility of the disease course progress of a chronic hepatitis b virus (HBV) infected person, and particularly relates to an application of a susceptible gene IL-6 SNP marker related to the disease course process progress of the HBV chronic infected person in early warning and genetic counseling of the outcome of the HBV chronic infected person. The invention provides an IL-6 gene SNP marker related to the outcome of chronic HBV and particularly related to the outcome of HBV-related hepatocirrhosis and a detection reagent and a detection method. For the chronic HBV patients having an rs2066992-site TT gene or a T allele or an rs1524107-site TT gene, scientific interference can be performed, for example, the patient is advised to take the curative prevention measures as early as possible, so that the risk of HBV-related hepatocirrhosis of susceptible people can be reduced on purpose.
Owner:ZHEJIANG UNIV

Application of long-chain non-coding RNA (ribonucleic acid) in treatment of DDH (developmental dysplasia of hip) disease

The invention relates to a novel application of Lnc RNA H19 (long non-coding ribonucleic acid H19), that is, overexpression of Lnc RNA H19 can delay the progression of disease from DDH (developmental dysplasia of hip) to osteoarthritis. The application has the advantages that the research of 7 cases of DDH cartilage tissue and 6 cases of cartilage tissue of fractured femoral neck shows that the expression of Lnc RNA H19 in DDH is remarkably reduced compared with that of Lnc RNA H19 in femoral neck fracture, and H19 is possible to have a relation with occurrence and development of DDH; DDH is accelerated to deteriorate into osteoarthritis if H19 is knocked down; the expression of H19 can be promoted through transfection of a slow virus LV-H19, and the overexpression of H19 can delay the progression of disease from DDH to osteoarthritis.
Owner:XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE

Application of miR-193a-5p antagonist or medicine composition of miR-193a-5p antagonist

The invention relates to application of a miR-193a-5p antagonist or a medicine composition of the miR-193a-5p antagonist to preparation of medicine for treating prostate cancer, and belongs to the technical field of medicine. The medicine composition is the miR-193a-5p antagonist and docetaxel. According to the application, the miR-193a-5p antagonist can enhance the curative effect of the docetaxel or can inhibit the drug tolerance of the tumor on the docetaxel, so that the cell apoptosis sensitization effect induced by prostate cancer cells on the docetaxel is greatly improved. The miR-193a-5p antagonist and the docetaxel are combined for medication, so that an effective path is provided for the prostate cancer treatment.
Owner:THE SECOND HOSPITAL OF HEBEI MEDICAL UNIV

Preparation methods of chitosan and organic water-soluble fertilizer thereof

The invention provides an organic water-soluble fertilizer comprising a variety of macro elements and trace elements. With the organic water-soluble fertilizer, nutrients needed by crop growth can be comprehensively supplemented, crop better growth can be regulated, crop yield can be substantially improved, dose is low, and cost is low. The fertilizer has good popularization value. According to the organic water-soluble fertilizer, n-butanol and fatty alcohol polyoxyethylene ether are added as leaf penetration wetting agents, such that foliar absorption of nutrients can be improved, and fertility higher-efficiency utilization can be facilitated. A main component of the fertilizer is modified natural high-molecular polysaccharide with relatively high repelling and inhibiting effects against crop pests and diseases. The component can be used for replacing chemical insecticide or fungistat with toxic or side effect in traditional organic water-soluble fertilizers. The novel organic water-soluble fertilizer is safe and environment-friendly. The fertilizer can naturally degrade in the nature, and has the advantage of low dose. Compared to that of traditional organic water-soluble fertilizers, the cost of the organic water-soluble fertilizer provided by the invention is reduced by approximately 10%. The organic water-soluble fertilizer has the three advantages of high efficiency, environment friendliness, and low cost.
Owner:武汉禾之壮农业科技有限公司

Asparagus extract as well as preparation method and application thereof

ActiveCN110075229AImprove atherosclerotic plaqueImprove blood lipid metabolism disorderNatural extract food ingredientsUltra high pressure food processesAsparagus adscendensApoptosis
The invention relates to an asparagus extract, in particular to the asparagus extract as well as a preparation method and application thereof. The asparagus extract is prepared from the following components in parts by weight: 50-70 parts of saponin, 6-15 parts of polyphenol, 2-5 parts of flavones and 1-2 parts of gamma-aminobutyric acid. The asparagus extract as well as the preparation method andapplication thereof provided by the invention have the advantages that the extracting efficiency is high and the content of effective active ingredients is high; the effects in the aspects of improving atherosclerosis, lipid metabolism disorder, intestinal flora disturbance or apoptosis of aortic smooth muscle caused by air pollutant acrolein are relatively good.
Owner:黄云祥 +1

Method and device for determining rock softening curve in bonding crack model

The invention provides a method and a device for determining a rock softening curve in a bonding crack model, which can completely and accurately reflect the three-section change of the rock softeningcurve, can be simultaneously suitable for soft rock and hard rock, and are high in fitting precision and free of human factor interference in the whole process. The rock softening curve determinationmethod comprises the following steps: step 1, acquiring peak stress, peak strain, residual stress and residual strain of a rock to be measured; 2, dividing rock uniaxial tensile test data into soft rock and hard rock according to different rock brittleness indexes B; 3, normalizing the post-peak stage of the rock stress-strain curve; 4, fitting the normalized data by adopting a power-exponentialsoftening function, and determining fitting parameters suitable for soft rock and hard rock respectively; 5, substituting the fitting parameters into the power-index softening function to obtain a rock softening curve in the bond crack model;
Owner:WUHAN UNIV

Resistance large-scale accurate identification method for resisting brown plant-hopper in rice adult-plant stage

ActiveCN108811869ASpeed up progressEfficient resistance identification technologyHorticulture methodsAnimal husbandryBrown planthopperInsect
The invention discloses a resistance large-scale accurate identification method for resisting brown plant-hopper in a rice adult-plant stage, and belongs to the field of rice genetic and breeding. Theresistance large-scale accurate identification method for resisting the brown plant-hopper in the rice adult-plant stage comprises the following steps of (1) rice stubble sample preparation; (2) ricestubble sample planting; (3) excess insect inoculation identification; (4) management after insect inoculation; and (5) identification result assessment. According to the resistance large-scale accurate identification method for resisting the brown plant-hopper in the rice adult-plant stage, a 'rice stubble identification method' is established, and an efficient resistance identification technology is provided for breeding of rice resistance to the brown plant-hopper of various scales. In general, resistance breeding materials of large, medium and small sizes can be identified at a time and can also be identified repeatedly, a seedling period identification result in the adult-plant stage can be identified repeatedly, and the identification result is accurate, thereby effectively promoting the progress of a resistance genetic and breeding project.
Owner:GUANGXI UNIV

Whole-genome selective breeding method and apparatus

The invention provides a whole-genome selective breeding method and apparatus. The method comprises the following steps of: acquiring markers significantly associated with a target phenotype in a training group; calculating a genome estimated breeding value of each individual in a breeding population by utilizing a plurality of whole-genome selection prediction models according to a training population and the markers; and according to the sequence that the genome estimated breeding values gradually decreases, selecting a predetermined number of individuals which are ranked ahead in the plurality of whole-genome selection prediction models as breeding materials. According to the invention, genome estimated breeding value calculation is carried out based on the plurality of models, multiplemodel results are used for co-localization, and the individuals with high breeding values in all the models are selected as the breeding materials, so the accuracy of results is greatly improved. Themethod can adapt to most of material backgrounds, fills the blank of genome selection analysis in a super computer, improves the effect of breeding selection, and promotes the progress of breeding.
Owner:天津诺禾致源生物信息科技有限公司

Application of RET proto oncogene 634 polymorphism sites in drug preparation

The invention belongs to the field of medicine biology, and relates to an application of RET proto oncogene 634 polymorphism sites in preparation of drugs for screening and diagnosis of multiple endocrine neoplasm type 2A. According to the research, DNA is extracted from MEN2A proband peripheral blood karyote, RET proto oncogene hot spot mutation sites are subjected to PCR amplification, direct sequencing is performed, and detection results are that: the pathogenic gene RET gene mutation site of MEN2A is mainly 634 site, the highest proportion of p.C634R (rs75076352) is 42.22%, and the proportion of p.C634Y (rs75996173) is 26.67%, such that the two polymorphism active sites such as the rs75076352 and the rs75996173 are applied in preparation of drugs for screening and diagnosis of multiple endocrine neoplasm type 2A so as to increase multiple endocrine neoplasm type 2A diagnosis rate, and timely treat patients.
Owner:RUIJIN HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE

Digital controlled tracing welding machine tool

A numerally controlled trace welding machine for welding shaped workpiece is composed of machine frame, welding gun, fixture, upper and lower track plates, trace guiding plate with trace guide slot, bench, speed controllable motor, mainshaft, secondary axle, etc.
Owner:夏士林

Production method of xylylenediamine

A method of producing xylylenediamine by the hydrogenation of dicyanobenzene obtained by the ammoxidation of xylene in a high yield while prolonging the catalyst life. In the method, a molten dicyanobenzene from which compounds having a boiling point lower than that of dicyanobenzene have been removed but compounds having a boiling point higher than that of dicyanobenzene are not removed is dissolved in a solvent containing liquid ammonia. By this dissolution, at least part of dicyanobenzene polymers precipitates as insolubles. The precipitates are removed by a solid-liquid separation. By subjecting the resulting solution containing the dicyanobenzene polymers in a reduced amount to hydrogenation, xylylenediamine is produced in a high yield and the life time of hydrogenation catalyst is prolonged.
Owner:MITSUBISHI GAS CHEM CO INC
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