496 results about "Hydroquinone" patented technology

The present invention provides a one-piece solid golf ball having excellent rebound characteristics and good shot feel, while maintaining excellent processability and durability. The present invention relates to a one-piece solid golf ball formed from a rubber composition comprising a mixture consisting of polybutadiene (a) synthesized using nickel-containing catalyst and polybutadiene (b) synthesized using cobalt-containing catalyst and hydroquinone or derivatives thereof as a vulcanization stabilizer, wherein a Mooney viscosity and a weight ratio of the polybutadienes (a) and (b), an amount of the vulcanization stabilizer, a center hardness (the minimum hardness in the golf ball) and surface hardness of the golf ball, and a difference between the maximum hardness and minimum hardness in the golf ball are adjusted to a specified range.

The invention relates to the field of nano material development and application, and discloses a method for synthesizing multi-branch colloidal gold nano particles different in grain diameter and high in light absorbing intensity through colloidal gold seed mediation growth. The method comprises the steps that firstly, a conventional trisodium citrate reduction method is adopted, Au3+ in chloroauric acid molecules is reduced into Au0, and ball-shaped colloidal gold seeds are obtained; then, the colloidal gold seeds are added into a growth solution, wherein the growth solution mainly comprises ultrapure water, chloroauric acid, trisodium citrate and other solutions; a magnetic stirring device is used for performing slow stirring, after the solution is evenly mixed, the solution is heated to 50 DEG C, and the rotating speed is increased at the time; and meanwhile a sufficient hydroquinone solution is added at a time, the temperature of the mixed solution is maintained at 50 DEG C, heating is stopped after the reaction is continuously carried out for 10 min, and a multi-branch colloidal gold solution high in light absorbing intensity can be obtained through cooling to the room temperature. The method has the beneficial effects of being easy to operate, simple in procedure, rapid in reaction, good in controllability, high in repeatability and the like.

The invention provides a special slow control/release fertilizer for an eggplant. The fertilizer is characterized by comprising, in terms of mass percent, 0.05% to 0.08% of n-butyl triamine thiophosphate, 0.05 to 0.08% of hydroquinone and 0.24 to 0.28% of dicyandiamide. According to the invention, the special slow control/release fertilizer is prepared by combining macro-element, medium-element and trace-element fertilizers like nitrogen, phosphorus, potassium, calcium, magnesium, molybdenum, boron, zinc and iron with organic fertilizers like high-quality decomposed rapeseed dregs, chicken manure and grass carbon, adding a urease inhibitor and a nitrification inhibitor and carrying out mixing; the special slow control/release fertilizer has a slow release effect in soil, is rich in a variety of nutrient elements needed in growth of the eggplant, can meet demands of the eggplant for nutrients in different growth and development phases for a long time and effectively improves output of the eggplant.

The present invention provides a class of thermotropic liquid crystalline polyesters (TLCPs) and molding compositions comprising the polyesters and glass fiber. The TLCPs consist essentially of repeat units derived from p-hydroxybenzoic acid (HBA), 6-hydroxy-2-naphthoic acid (HNA), terephthalic acid (TA), and hydroquinone (HQ), and the mole percent of HBA, HNA, TA and HQ is 34-72%, 12-26%, 4-21% and 4-21%, respectively. The TLCPs have a melting temperature equal to or below 355° C., an inherent viscosity of 4.0-10.0 dL/g and a Heat Deflection Temperature (HDT) in the range of 260-285° C. when compounded with 30% by weight glass fiber. The optimum compositions, selected from the above-mentioned compositional ranges exhibit a relatively low melting temperature and a relatively high HDT. Specified compositions, selected from the above-mentioned compositional ranges have low melting point, which are useful to blend with conventional polymers such as poly (ethylene terephthalate) and nylon etc.

The invention especially relates to a process for harmless disposal of high-concentration high-salt phenol-containing wastewater and recovery of high-purity sodium chloride, belonging to the field oftreatment of high-concentration high-salt wastewater in the pesticide and chemical industry. According to the invention, a combination of physical treatment and chemical treatment is adopted; a treatment idea taking a hydroquinone oxidation intermediate as an oxidation target is employed; a multi-stage step-by-step composite oxidation manner is utilized; air oxidation is implemented at the first stage to precipitate insoluble precipitates; by means of filtration, the CODs of wastewater can be reduced by about 40%; hydrogen dioxide oxidation is conducted at the second stage, and reaction conditions are controlled to remove small-molecular organic matters in the wastewater; a strong oxidant is employed in the third-stage oxidation for deep oxidation; and high-purity sodium chloride in the wastewater having undergone multi-stage oxidation treatment is recovered by using an MVR evaporation process, and the recovered sodium chloride meets the internal quality standard of enterprises, and has a content of 95% or more. With the process of the invention, the recycling of the by-product sodium chloride can be realized while the treatment cost of the phenol-containing wastewater is reduced,so the purpose of resourceful disposal is achieved.

The invention is a miura - Ori origami structure electromagnetic stealth plate of loaded graphene metamaterial unit. An electromagnetic stealth plate of the invention is prepared by immersing a substrate in a mixture of hydroquinone and graphene oxide and sealing a heat treatment so as to attach absorbing medium to the substrate; after removing and cleaning, drying by freeze treatment to obtain graphene Weaving; graphene woven cloth is immersed in an epoxy resin precursor solution, paved, heated, and cured, to get an electromagnetic stealth plate; the electromagnetic stealth plate in accordance with Miura - Ori origami method of processing creases, so that the electromagnetic stealth plate along the crease Deformation; and in the electromagnetic stealth plate on the plate surface of the super-material unit.

The invention relates to a termite pheromone attractant and a termite trap-killing agent using the attractant, and belongs to the technical field of termite trap-killing agents. The termite pheromone attractant comprises the following components: hydroquinone, arbutin, oleic acid, glucose, cyclohexanhexol, mannose, 2,6-di-tert-butyl paracresol, amino acid, a biological active enzyme, salt, codlemone, gloeophyllum trabeum, ethanol, 2-phenoxyethanol, n-hexane, dismutase, poria cocos, coriolus versicolor, tall gastrodia tuber, edible fungus, lucid ganoderma, bee honey, maltose, fermented sugarcane powder, fermented straws and acetone. The termite pheromone attractant disclosed by the invention synchronously has the functions of a termite phagostimulating pheromone and a termite trace pheromone by adding a chemical pheromone into a termite trap-killing agent, and can be used for significantly increasing the eating amount of termites on the trap-killing agent and improving the trap-killing effects of the termite trap-killing agent; and meanwhile, the termite pheromone attractant has extreme sensitivity and high specificity.

The invention relates to a new fluorine polyaryletheretherketone soluble high-performance material, process for preparation and the blend film material formed by the epoxide resin. The process for preparation comprises the following procedures: regarding 4,4'- difluorobenzophenone or 4,4'-difluorotribenzodiketone and mixing bisphenol monomer as the material; controlling the proportion of bisphenol hexaflurate A ( or trifluoromethyl phenyl eldopaque) and bisphenol A ( or fenolftaleina) in the segment of polymer via the way of nucleophilic substitution reaction; getting the new fluorine polyaryletheretherketone soluble high-performance material; furthermore, selecting the immobilized liquid epoxide resin and the functional polymer blend film prepared by the new fluorine polyaryletheretherketone soluble high-performance material in order to achieve the functionalization of polyaryletheretherketone material for meeting the aim of the different applying range and extending the processing window. The blend film material is suitable for high-performance composite material resin base field, microelectronic insulating material field, optical waveguide device field and air permoselective membrane field and the like.

The invention discloses a preparation method of acrolein, and relates to the field of acrolein preparation by catalyzing dehydration of glycerol. The preparation method is characterized in that: glycerol is used as a raw material, an immobilized ionic liquid is used as a catalyst, and acrolein is prepared by dehydration; the used ionic liquid is acidic ionic liquid [BMIM]BF4 (1-butyl-3-methylimidazolium terafluoroborate) or [BMIM]H2PO4, and the acidic ionic liquid is immobilized by impregnation; the molar selectivity of the acrolein prepared by adding 1-8% of hydroquinone used as a polymerization inhibitor to 10-60% of glycerol aqueous solution used as a reaction solution and reacting under the conditions of atmospheric pressure, reaction temperature of 240-360 DEG C and volume space velocity of 5-15/h can reach 90.4%; and the conversion rate of glycerol can reach 100%. The preparation method has the advantages that the immobilized acidic ionic liquid has higher selectivity in the dehydration reaction of glycerol, the acrolein yield is higher, the reaction stability is good, and the life of the catalyst is long.

The invention discloses an industrial synthesis method of high-thermal-stability blocked binphenyl-structure-containing polyaryletherketone resin. The industrial synthesis method of the high-thermal-stability blocked binphenyl-structure-containing polyaryletherketone resin comprises the following steps: carrying out polymerization reaction based on paradioxybenzene, biphenol and 4,4'-difluoro diphenyl ketone or 4,4'-difluoro triphenyl diketone as reaction monomers, a high boiling point organic solvent as a solvent, alkali carbonate as a salt-forming agent and asymmetric aromatic ketone-based derivative as a blocking agent, so as to obtain polymerization mucosal fluid; cooling the polymerization mucosal fluid and smashing the cooled polymerization mucosal fluid into powder, filtering and boiling and washing with an organic solvent and deionized water for removing the solvent and byproduct salt, and drying, thus obtaining the binphenyl-structure-containing polyaryletherketone resin. The industrial synthesis method of the high-thermal-stability blocked binphenyl-structure-containing polyaryletherketone resin has the advantages that sodium carbonate alkali metal is individually adopted as a catalyst, and a good blocking effect is realized after the blocking agent is added; besides, no polymerization phenomenon is caused in a system, and the obtained blocked binphenyl-structure-containing polyaryletherketone resin has high temperature thermal stability.

A modified titanium silicate molecular sieve material is obtained by means of modification of a titanium silicate con molecular sieve from magnesium and aluminum. The mass ratio of the magnesium, by MgO, to the titanium silicate molecular sieve is x, and x ranges from 0.001 to 0.99, the mass ratio of the aluminum, by Al203, to the titanium silicate molecular sieve is y, and y ranges from 0.001 to0.99. An acid-base effect of the material and an oxidation effect of the titanium silicate molecular sieve are realized cooperatively, better catalytic selectivity is realized, for example, the selectivity on benzenediol in reaction production of phenol hydroxylation is higher than that relative to catechol, and accordingly added values of the product can be greatly increased.

Provided is a coffee composition having an excellent hypotensive effect. The coffee composition has the following components (A) and (B): 0.01 to 1% by weight of chlorogenic acids (A), less than 0.1% by weight, based on the weight of the chlorogenic acids, of (B) hydroxyhydroquinone.

The invention discloses a cloth cart. The cloth cart comprises a metal rotating shaft subjected to surface treatment. The surface treatment process includes the following steps that firstly, by mass, 1-2 parts of mercaptobenzothiazole, 0.9 part of nickel nitrate, 1.4 parts of 1-Hydroxyethylidene-1,1-diphosphonicacid, 2.3 parts of polyvinylpyrrolidone, 1.8 parts of dipyrazolone, 2.3 parts of 2,6-di-t-butyl-alpha-dimethylamino hydroquinone and 1.6 parts of tetramethyl ammonium bromide are added into 12 parts of deionized water and evenly stirred and mixed, and surface treatment working fluid is obtained; secondly, the surface treatment working fluid is heated to 53 DEG C; thirdly, the metal rotating shaft is put into the surface treatment working fluid to be steeped for 32 min, taken out and then dried. Due to the fact that the metal rotating shaft of the cloth cart is subjected to surface treatment, good rub resistance, corrosion resistance, rust resistance, heat resistance, cold resistance and weather resistance are achieved.

A method is described for immediately terminating free radical polymerizations by adding an inhibitor solution comprising a phenothiazine compound and/or a monoalkyl ether of hydroquinone to the free radical polymerizing system. The method is characterized in that the solvent of the inhibitor solution comprises at least 50% by weight of said solvent of alkylene glycol and/or polyalkylene glycol and/or terminally etherified derivatives of alkylene glycol and/or of polyalkylene glycol. The method permits the use of nontoxic inhibitor solutions.

Inhibitor solutions are also described which comprise a phenothiazine compound and/or a monoalkyl ether of hydroquinone and, as solvent, alkylene glycol and/or polyalkylene glycol and/or terminally etherified derivatives of these compounds.

The invention relates to a preparation method for 1, 4-double (4-amido phenoxyl) benzene. The method comprises the steps as follows: (1) hydrochinone and 4-halogenated nitrobenzene with a mole rate of 1.00: 1.80 to 2.80 are heated to carry a back flow water dividing reaction for 2 to 18 hours inside halogen agent, strong polarity non-proton or organic solvent system; the reaction is condensed and the reaction article system is cooled; water is filled in; a Kelly solid product is separated out and then is filtered and dried; (2) 1, 4-double (4-nitryl phenoxyl) benzene reacts for 2 to 20 hours by the common effect of ferric chloride/20 to 95 percent hydrazine hydrate reduction system, alcohol alike solvent and active carbon under a temperature ranging from 50 DEG C to 90 DEG C, and then the 1, 4-double(4-nitryl phenoxyl) benzene is deoxidized to the 1, 4-double (4-amido phenoxyl) benzene crystal product. The invention has the advantages of easy operation, environment protection, being suitable to be used for industrial production, high product yield and more than 99 percent of purity. Besides, the solvent can be recycled and applied again and again.

The invention relates to a method for catalytic synthesis of alpha-arbutin by using dissociative or immobilized candida lipase. The method comprises the process steps of selection of a reaction system, preparation of immobilized lipase, optimization of reaction conditions, extraction of a product, etc. According to the invention, hydroquinone and sugar mixed according to a mol ratio of 1: 1 to 1: 5 are added into a reaction medium, and lipase is used as a catalyst for a reaction; the reaction lasts for 10 to 120 h at a temperature of 20 to 60 DEG C, and a conversion rate of alpha-arbutin is as high as more than 95%; and the usage amount of lipase is 0.01 to 5 times of the weight of sugar. Alpha-arbutin is synthesized under the catalysis of dissociative or immobilized lipase in the method for the first time, and the method has the advantages of mild reaction conditions, repeated usability of lipase, a short production period, a simple extraction process for the product, etc., thereby enabling production cost to be substantially reduced.

The invention discloses a synthesis of Li twice battery organic free radical polymer PTMA polar material and application, which comprises the following steps: choosing HTMP and MMA as forerunner; adopting optimum ester interchange synthesized method; preparing MTMP; choosing eldopaque or metal copper as inhibitor; choosing metallic sodium or magnesium methylate as accelerant; preparing MTMP; using MTMP as monomer; choosing AIBN trigger; polymerizing through free radical body in toluene solution; preparing polymer PMTMP; using Na2WO4-H2O2-EDTA as oxidant in the methanol solution; getting PTMA with side chain as nitrogen oxygen stabilizing free radical. This invention can eliminate safe hidden danger of temperature increment, which possesses good electrolytic solution mutual dissolving property.

The invention discloses a preparation method of polyether-ether-ketone resin, and the method comprises the following steps of: adding solvent sulfolane, 4, 4'-DFBP and carbonate/bicarbonate into a reaction container under the condition that protective gas is introduced, heating the reaction container in case of stirring, and discharging moisture and air in a system; after the moisture in the system is completely evaporated, adding hydroquinone and a water-carrying agent in the process of continuously heating, wherein the temperature of the system is 100-200 DEG C; continuously heating, starting water-carrying reaction on the hydroquinone and the carbonate/the bicarbonate to generate the moisture, and continuously taking out the generated moisture by the water-carrying agent, distilling the water-carrying agent after the water carrying is completely carried out, starting polymerization reaction when the temperature reaches 245-265 DEG C, and stopping reaction after 1-5 hours. The invention further discloses polyether-ether-ketone prepared by the method, and an application of the prepared polyether-ether-ketone in a composite material.

The present invention is synthesis process of phosphoric phenolic resin. The phosphoric phenolic resin is prepared with phosphoric acid, phenols, and water solution of formaldehyde or paraformaldehyde as materials, and through one technological process with regulated and controlled parameters. The phosphoric phenolic resin is one kind of high performance phenolic resin with high temperature resistance, strong acid and alkali corrosion resistance, flame resistance, etc.

The invention discloses a leather mark-reaching producing method of hexavalent chromium, which comprises the following steps: placing the basket wet leather in barrate to wash; adding in water, degreasant, aminic acid liquor; discharging liquor; putting in water, modified glutaral, chromium powder, sodium thiosulphate; discharging liquor; adding in water, sodium acid sulfite, sodium thiosulphate, neutralization multiple tanning agent PAK-N apocenosis; discharging liquor; adding in water, synthetic tanning agent, acrylic resin tanning agent ART-1, bayberry extract, dye, sulfating modified adeps lanae fatting agent, synthetic fatting agent SES201, SCF synthetic fatting agent, DF recombination fatting agent, gallic acid, eldopaque and formaldehyde solution; discharging liquor; filling water; discharging liquor in the end. The invention prevents every nucleus of hexavalent chromium produced.

The invention particularly discloses unsaturated polyester resin for polyester concrete. The unsaturated polyester resin has a formula comprising the following components: phthalic anhydride, maleic anhydride, recoverable-grade PET flakes, 1,2 propanediol, ethylene glycol, polyhydric alcohol, benzoic acid, styrene, a polymerization inhibitor, an antioxidant, paraffin, an alcoholysis aid, copper naphthenate and p-benzenediol. The invention further discloses a preparation method of the unsaturated polyester resin which is prepared through an alcoholysis reaction, a condensation reaction and a dilution process. Compared with the prior art, the unsaturated polyester resin disclosed by the invention is low in viscosity, high in reaction activity, short in post-curing time, resistant to acid, alkali and water, and excellent in mechanical property, further, the recoverable-grade PET flakes are adopted, therefore, the cost is greatly reduced, and the production period is shortened.

The invention discloses a method for synthesizing alpha-arbutin by an enzymic method through catalysis. The method comprises the following steps of: 1, culturing a slant seed: taking a xanthomonas campestris CGMCC (China General Microbiological Culture Collection Center) NO.1243 strain, and inoculating the xanthomonas campestris CGMCC NO.1243 strain in a slant culture medium for culturing; 2, culturing a liquid strain: selecting a ring strain, inoculating the ring strain in a basic fermentation culture medium, and placing on a table concentrator for oscillating and culturing to obtain a seed culture solution; 3, adding the seed culture solution in the basic fermentation culture medium, oscillating and culturing for 24-48h, freezing, centrifugally collecting thalli, washing the thalli with a PBS (Phosphate Buffer Solution) for 2-3 times, ultrasonically crushing at a low temperature, centrifuging, and taking supernate, namely intracellular crude enzyme; and 4, adding cane sugar and hydroquinone in the intracellular crude enzyme for reacting, and separating and purifying a reaction product to obtain the alpha-arbutin. The method disclosed by the invention has the advantages of high production efficiency, high transformation rate of the hydroquinone, low cost, short process flow and the like.