688 results about "Cyanamide" patented technology

A pharmaceutical composition comprising a co-crystal of an API and a co-crystal former; wherein the API has at least one functional group selected from ether, thioether, alcohol, thiol, aldehyde, ketone, thioketone, nitrate ester, phosphate ester, thiophosphate ester, ester, thioester, sulfate ester, carboxylic acid, phosphonic acid, phosphinic acid, sulfonic acid, amide, primary amine, secondary amine, ammonia, tertiary amine, sp2 amine, thiocyanate, cyanamide, oxime, nitrile diazo, organohalide, nitro, s-heterocyclic ring, thiophene, n-heterocyclic ring, pyrrole, o-heterocyclic ring, furan, epoxide, peroxide, hydroxamic acid, imidazole, pyridine and the co-crystal former has at least one functional group selected from amine, amide, pyridine, imidazole, indole, pyrrolidine, carbonyl, carboxyl, hydroxyl, phenol, sulfone, sulfonyl, mercapto and methyl thio, such that the API and co-crystal former are capable of co-crystallizing from a solution phase under crystallization conditions.

The present invention relates to a composite water-proof material. It is made up by using (by weight portion) 20-70 portions of plant fibre, 10-60 portions of flyash and 5-40 portions of adhesive through the processes of mixing them, die-pressing and polymerization. The described adhesive is formed from maleic anhydride, phthalic anhydride, polyalcohol, styrene or mixture of their homologous compounds, also can include trimeric cyanamide, acrylic acid or rosin and dicyclopentadiene. Its raw material composition also can include 10-40 portions of new and old plastics. Said plate material has strong strength and good water-proof property, so that it has extensive application range.

The invention discloses a preparation method of a graphite phase carbon nitride/molybdenum sulfide composite material. The preparation method comprises the following steps of mixing MoS2 and a nitrogen source uniformly, and adding a grinding agent for grinding for 30-60min until the materials are fully mixed uniformly to obtain a mixture, wherein the ratio of addition amount of MoS2 to the nitrogen source to the grinding agent is 1mmol:(3-7)mmol:(1-3)ml; (2) under the protection of N2, heating the mixture in the step (1) to 500-600 DEG C to roast for 3-5h to obtain a g-C3N4/MoS2 composite material. Hydrogen cyanamide, dicyandiamide, tripolycyanamide or urea is taken as the nitrogen source. By using the method disclosed by the invention, the graphite phase carbon nitride/molybdenum sulfide composite material can be prepared by using a one-step method, so that the preparation process is simplified; and no chemical reagent is added, so that the production cost is reduced.

The present invention discloses a refractory pouring material for molten iron desulfurization stirrer. It is formed from pouring material base material and proper quantity of additive. The composition of the base material of pouring material includes (by wt%) 55-65% of general electrofused mullite 3-10% of jiaobaoshi, 3-7% of silicon micropowder, 5-10% of alpha-Al2O3 micropowder, 3-10% of pure calcium aluminate cement and 1.5-2.5% of compact corundum fine powder, and the described additive is formed from heat-resistant steel fibre, aluminium lactate and/or metal aluminium powder and sodium triphosphate and/or trimeric cyanamide.

A corrosion-inhibiting composition for application to a metal substrate, such as aluminum or steel, and in connection with a paint, and the synthesis of the composition. The active inhibitor constituent of the composition can be selected from the group consisting of 2,5-dimercapto-1,3,4 thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4-thiadiazole, trithiocyanuric acid (TMT), and derivatives of DMTD and TMT, including various N— or S— and N, N—, S— and N—,S-substituted derivatives of DMTD, including salts of DMTD of the general formula: M(DMTD)_n, where n=1,2 or 3, and M is a metal cation and preferably M=Zn(II), Bi(III), Co(II), Ni(II), Cd(II), Pb(II), Ag(I), Sb(III), Cu(II), Li(I), Ca(II), Sr(II), Mg(II), La(III), Ce(III), Pr(III), Al(III) or Zr(IV). DMTD, TMT, and their derivatives may also be combined with phosphates, molybdates, borates, silicates, tungstates, phosphotungstates, phosphomolybdates, cyanamides, carbonates, SiO₂ and mixtures thereof.

The present invention relates to a molecular compounded trimeric cyanamide cyanurate fire-retarding agent, its preparation method and application. Its preparation includes the folloiwng steps: adding 10-300 portions of recombiner and 100-2000 portions of water in the reactor still with stirrer and thermometer, making them be completely dissolved at 50-130 deg.C, then successively adding 0-300 portions of fire-retarding synergist, 50-100 portions of trimeric cyanamide and 50-110 portions of cyanuric acid, stirring and reacting for 5 min-2 hr, at 50-150 deg.C, in the course of reaction can more adding 100-1000 portions of water so as to obtain the white emulsion or viscous paste-like material of molecular compounded trimeric cyanamide cyanurate.

A one-step process for preparing both cyanuramide and the ammonium hydrogen carbonate/sodium carbonate and ammonium chloride features that the synthetic amonia is directly delivered to the cyanuramide preparing step, where it is preheated to 350-400 deg.C and used as gas carrier of fluidized bed, and the gas from liquid urea washing tower is divdied into two channels, one returning back to crystallizer and used as cold gas and another being directly used to prepare ammonium hydrogen carbonate/sodium carbonate and ammonium chloiride. Its advantages are low cost and high catalytic efficiency.

The invention discloses a method for cultivating grapes yielding twice per year. The method specifically includes the steps of trimming short branches in the first ten days and the middle ten days of January, and covering a greenhouse to raise the temperature half a month after trimming; spraying a 2% hydrogen cyanamide solution for accelerating germination after the temperature per day in the greenhouse reaches 10 DEG C; cultivating the grapes instead in a rain-shielding mode in the middle ten days of May; dressing a magnesium and potassium mixed fertilizer on the first batch of fruits once in the expansion period, wherein the first batch of fruits ripen in July and August; conducting secondary trimming half a month after the first batch of fruits are harvested, reserving four to six buds at the base part of each mother branch, and dispersing and removing leaves; smearing two buds at the top end of each branch with a 2% hydrogen cyanamide solution for accelerating germination after trimming; applying an organic fertilizer once before the second batch of fruits sprout, wherein the amount of the consumed organic fertilizer accounts for one third the total amount of consumed fertilizers in the whole year; dressing a magnesium and potassium mixed fertilizer on the second batch of fruits once in the expansion period, covering the greenhouse for preserving the heat in the last ten days of October and the first ten days of November, wherein the second batch of fruits ripen before and after the New Year Day. By means of the method, the yield of the grapes is effectively increased by about 30% to 50%, quality is improved, the supply period of fresh grapes is adjusted, and economic benefits of grape plantation in regions in the south of Yangtze River are remarkably improved.

The present invention provides a fire-retardant coating capable of forming ultrathin coating layer and having high fire-resisting limit. Its composition comprises (by weight portion) 50-60 portions of modified acrylic resin, 12-16 portions of pentaerythritol, 9-12 portions of trimeric cyanamide, 19-21 portions of polyammonium phosphate, 6-8 portions of zinc borate, 9-11 portions of titanium pigment, 1.25-15 portions of chlorinated paraffin (in which chlorine content is 70%) and 8-15 portions of 200# solvent gasoline. The above-mentioned modified acrylic resin is a chlorinated rubber modified acrylic resin made up by using 1.4-1.8 portions of chlorinated rubber, 2.2-2.7 portions of xylene, 0.9-1.1 portions of hexamethylene-diisocyanate and 1.6-1.8 portions of hydroxyl-bearing acrylic resin. Its coating layer thickness is 1.71-2.69 mm, and its fire-resisting limit can be up to 69-147 min.

The invention discloses a chirality graphite phase carbon nitride polymer semiconductor photocatalyst as well as a preparation method and applications thereof, and belongs to the technical field of material preparation and photocatalysis. Chirality graphite phase carbon nitride is synthesized by taking cyanamide as a precursor and chirality mesoporous silica as a hard template, and removing the template through heat polymerization. The chirality graphite phase carbon nitride prepared by the invention has a chirality spiral-bar-shaped morphology and a micro-nano structure, shows particular circular dichroism and optical activity by when being compared with traditional body phase carbon nitride, has a great specific surface area and a high optical absorption performance, and shows a favorable optical catalysis hydrogen generating performance under visible light. According to the invention, the chirality graphite phase carbon nitride polymer semiconductor photocatalyst is synthesized; a preparation technology is improved; and the chirality graphite phase carbon nitride polymer semiconductor photocatalyst as well as the preparation method and applications thereof have an important application prospect.

The invention belongs to the field of battery materials, and particularly relates to a cathode material for a lithium battery. The invention discloses a method for preparing a lithium titanate/titanium nitride composite material, which comprises the following steps of: grinding titanium dioxide serving as a titanium source, lithium titanate and solid nitrogen source uniformly in a disperse medium, drying at the temperature of between room temperature and 120 DEG C, and grinding; and firing under the protection of vacuum or inert gas, and then naturally cooling to obtain the lithium titanate/titanium nitride composite material, wherein the nitrogen source is selected from one or mixture of more than two (comprising two) of urea, biuret, cyanamide, dicyandiamide, melamine, cyanuric acid monamide and cyanuric acid diamide. The method for directly preparing the Li4Ti5O12/TiN composite electrode material by adding the solid nitrogen source into the raw materials for preparing Li4Ti5O12 does not increase the preparation process, has low cost, simple process and low energy consumption, and is easy to realize scale production.

The present invention discloses one kind of heat resistant anticorrosive composite polyphenylene sulfide epoxy paint and its preparation process. The anticorrosive paint consists of primer, finishing paint and intercoat paint. The primer consists of polyphenylene sulfide, epoxy resin, glass scale and cyanamide dimmer. The finishing paint consists of polyphenylene sulfide, epoxy resin, silicon carbide, 4, 4'-diamino diphenyl sulphone and cyanamide dimmer. The intercoat paint consists of polyphenylene sulfide, epoxy resin, silicon carbide, glass scale, dihydrazide sebacate and 4, 4'-diamino diphenyl sulphone. The anticorrosive paint produces no sag, and can form homogeneous and smooth coating with excellent physical and chemical performance, high heat resistance, high corrosion resistance, high impact strength, and high insulating performance.

The present invention discloses a nitrogen-doped carbon nanotube/ carbonitride composite material preparation method, nitrogen-doped carbon nanotube and solid hydrogen cyanamide powder are mixed and ground, the mixed nitrogen-doped carbon nanotube/solid hydrogen cyanamide powder is calcined for reaction, and a nitrogen-doped carbon nanotube/ carbonitride composite material is obtained by washing respectively with ethanol and ultrapure water, centrifuging and drying. The present invention also discloses application of the nitrogen-doped carbon nanotube/ carbonitride composite material in microbial fuel cells. The preparation method of a catalytic electrode from the nitrogen-doped carbon nanotube/ carbonitride composite material is as follows: the nitrogen-doped carbon nanotube/ carbonitride composite material, a conductive material and a binder are mixed nitrogen doping, a solvent is added into the mixture for evenly mixing and ultrasonically dispersing, a conductive substrate is uniformly coated with the ultrasonic mixture, and the conductive substrate is naturally dried to obtain the nitrogen-doped carbon nanotube/ carbonitride composite material catalytic electrode. The method has the advantages of simple process, low cost, short cycle, and environmental friendliness, and the like.

The invention discloses a method for synthesizing Imatinib. In the method, 4-methylol-N-[4-methyl-3-aminophenyl] benzamide is used as the raw material to carry out addition reaction with cyanamide to obtain an intermediate 4-methylol-N-(3-guanidyl-4-methylphenyl) benzamide (II), the intermediate (II) carries out condensation reaction with 3-(3-dimethylamino allyl acyl) pyridine to obtain an intermediate 4-methylol-N-[4-methyl-3-[[4-(3-pyridine)-2-pyrimidine] amino] phenyl] benzamide (III), the intermediate (III) reacts with substituted benzene sulfonyl chloride to obtain an intermediate 4-[ substituted benzenesulfonic acid carbomethoxy]-N-[4-methyl-3-[[4-(3-pyridine)-2-pyrimidine] amino] phenyl] benzamide (IV), and finally the intermediate (IV) reacts with methylpiperazine to obtain the Imatinib (V). The method has simple route process, mild conditions, high product purity and yield, and comparatively low cost and is beneficial to industrialized production.

Methods of producing a sulfilimine compound, such as N-cyano-S-methyl-S-[1-(6-trifluoromethyl-3-pyridinyl)ethyl]sulfilimine or other substituted sulfilimine compound. The method includes combining a sulfide compound, cyanamide, a hypochlorite compound, and a base, and oxidizing the sulfide compound to form the sulfilimine compound. The sulfide compound may include a 2-trifluoromethyl-5-(1-substituted)alkyl-thiopyridine compound. The base may include sodium hydroxide. A buffer, such as a phosphate buffer, may, optionally, be used in the reaction.

The invention relates to an N-doped graphene preparation method and an application of an N-doped graphene. The method specially comprises steps of: preparing graphene oxide to form a solution with proper concentration, utilizing hydrazine hydrate to reduce, adding an appropriate amount of cyanamide into the solution, rotatably steaming and drying, then calcinating at high temperature, and finally cleaning and drying to form the N-doped graphene. A 4-electron oxygen reduction process can be realized through adding the graphene oxide into a neutral phosphate buffered solution, so that the N-doped graphene can be applied to microbial fuel cells as a cathode material. The N-doped graphene prepared by the method has the advantages of high catalytic activity, good stability, simple preparation technology, low cost and the like.

The invention relates to the novel technical field of fruit tree production management, in particular to a production management method for achieving double-season fruit yielding of grapes. The production management method comprises the steps that the grape trees are pruned in the early spring period every year, broken sleep and accelerating germination are conducted on branch buds, and the grape trees are promoted to sprout, bloom and yield fruits early; the grape trees are pruned in a good time and secondary accelerating germination and flower forcing are conducted after first season fruits are harvested, and secondary blooming and fruit yielding of the grape trees are promoted. A broken sleep and accelerating germination agent is a novel and effective agent which is composed of a hydrogen cyanamide water solution, gibberellin and super absorbent resin. In order to achieve high and stable yield of the double-season grape trees, except for fertilizer applying through a conventional method, a novel fertilizer - a solid nutrient solution fertilizer composed of KOMIX organic activity humic acid fertilizer, a water-retaining agent and water is additionally applied in the production management of the grape trees. In order to promote the stable yield and high quality of the two times of grape yielding, optimization selection and collocation and scientific applying are conducted on selection and application of leaf fertilizers.

The invention relates to a modified foaming phenolic resin and a manufacturing method thereof. The modified foaming phenolic resin comprises the following raw materials: phenol with mole fraction of 100, paraformaldehyde with mole fraction of 80-100, a modifier with mole fraction of 10-20, and a catalyst with mole fraction of 0.5-8. The preparation method comprises the steps of: adding the raw materials in a reaction kettle to mix up; heating to a temperature of 50-80 DEG C and stopping heating, and preserving the temperature for 2-10 hours; and stopping the reaction and cooling to obtain the product. In the invention, cyanamide and amide modifiers are added to improve the strength and the tenacity of the synthetic resin; meanwhile, the formaldehyde solution is replaced by the paraformaldehyde and wastewater containing phenol and aldehyde cannot be generated in the manufacturing process, therefore, the defect that wastewater is generated in the common manufacturing technology is overcome, and the manufacturing process is more environmental-friendly. More significantly, the strength of the phenolic foam manufactured by using the modified foaming phenolic resin can satisfy the demand of the wall heat preservation material.

The invention relates to a coating modification method for melamine formaldehyde resin of ammonium polyphosphate. The method comprises the following steps: firstly, heating and activating ammonium polyphosphate, partially deaminizing to form acid activated ammonium polyphosphate, and then enabling trimeric cyanamide to react with activated ammonium polyphosphate to obtain ammonium polyphosphate of which the surface is grafted with the trimeric cyanamide; finally crosslinking with the trimeric cyanamide on the surface of the ammonium polyphosphate of which the surface is grafted with the trimeric cyanamide by using formaldehyde, so as to prepare the modified ammonium polyphosphate coated with melamine formaldehyde resin. The defects that the traditional coating modification technology of the melamine formaldehyde resin is large in material consumption, difficult to recover a solvent, not tight enough to combine a resin shell layer and an ammonium polyphosphate core material are overcome, the solubility of the prepared modified ammonium polyphosphate just is 0.012g/100g of water, and is reduced by over 90% in comparison with that of the ammonium polyphosphate material, the initial decomposition temperature of the modified ammonium polyphosphate can be up to 245 DEG C, and is improved by 55 DEG C in comparison with the initial decomposition temperature of the ammonium polyphosphate material, 30wt% of polypropylene is added to prepare flame retardant composites, and the limit oxygen index of the composites can be up to 28.3%.