50 results about "Benzenediol" patented technology

The invention discloses an alkali-free accelerator and a preparation method and application thereof in the technical field of concrete additives, and the alkali-free accelerator provided by the invention comprises the following components in percentage by mass: 40%-50% of aluminum sulfate, 10%-15% of magnesium sulfate, 0.2%-0.6% of diethanol amine, 0.5%-1% of catechol-4-ammonium sulfonate, 5%-10% of a stabilizer and the balance of water. The stabilizer comprises silicate dispersion liquid and silica sol. The alkali-free accelerator provided by the invention can be used for spraying concrete, the mixing amount of the alkali-free accelerator is generally 4-6% of the mass of cement, the alkali-free accelerator is good in rapid setting effect and has excellent early and later compressive strength, and meanwhile, the alkali-free accelerator has relatively excellent stability.

The invention belongs to the field of photocatalytic preparation of hydrogen peroxide, and relates to a novel secondary amine linked covalent organic framework material (AR-COF) as well as a preparation method and application thereof. According to the material, tetraaldehyde phenyl porphyrin and 2, 5-diamino-1, 4-benzenediol dihydrochloride are subjected to a Schiff base reaction to synthesize an imine bond connected porphyrinyl covalent organic framework (IM-COF), and then synthesis post-modification (PSM) is performed on the imine bond connected porphyrinyl covalent organic framework (IM-COF) so that the imine bond connected porphyrinyl covalent organic framework (IM-COF) and sodium borohydride can be subjected to a reduction reaction to generate AR-COF. The photocatalytic stability of the material is maintained through modification after synthesis, the catalytic activity is improved, and the original crystal structure is not damaged. A photocatalytic hydrogen peroxide production experiment shows that the catalytic activity of AR-COF under 420 nm monochromatic light is superior to that of IM-COF, the yield under an oxygen condition reaches 7.79 mmol.g <-1 >. H <-1 >, and hydrogen peroxide can be stably produced. The method utilizes solar energy for green synthesis under mild conditions, and provides a safe and efficient method for hydrogen peroxide production.

The invention belongs to the field of photocatalytic preparation of hydrogen peroxide, and relates to a porphyrin-based covalent organic framework material (IM) as well as a preparation method and application thereof. The material is synthesized through a Schiff base reaction of tetraaldehyde phenyl porphyrin and 2, 5-diamino-1, 4-benzenediol dihydrochloride, an imine bond connected covalent organic framework is formed, interlayer hydroxyl strengthens the structural orderliness and stability through hydrogen-bond interaction, a porphyrin large-pi conjugated system drives efficient transmission of electrons in the framework, and the separation efficiency of photon-generated carriers is improved. The obtained IM photocatalyst is good in crystallinity, a photocatalytic hydrogen peroxide production experiment shows that the hydrogen peroxide yield reaches 1470.24 [mu] mol.g <-1 > after IM reacts for 4 h under irradiation of an ultraviolet lamp, the yield is stably increased, and high catalytic activity and stability are shown. The method utilizes light energy for green synthesis of hydrogen peroxide under mild conditions, and provides an efficient and safe new strategy for hydrogen peroxide production.

The invention discloses a connecting peptide and application thereof in promoting compound glucose methylation modification. A glycosyl transferase-methyltransferase fusion protein gene and genes LtLasS1 and LtLasS2 coded by benzenediol lactone synthetase, which are connected in series by connecting peptides, are co-expressed, and liquid phase and mass spectrometry of a fermentation product are carried out to determine that the fusion protein can realize glucose methylation modification by hydroquinone lactone. Wherein the conversion efficiency of the fusion protein hydroquinone lactone using the DL-4 connecting peptide is the highest, and the relative conversion rate is 65.54 + / -3.75%. Besides, by feeding a substrate kaempferol and testing the glucose methylation conversion efficiency of the artificial fusion protein constructed by the connecting peptide, the conversion efficiency of the fusion protein using the DL-4 connecting peptide to the substrate is 6 times of the conversion efficiency of the fusion protein using a single glycosyl transferase and a single methyltransferase to the substrate, and the relative conversion rate is increased to 60.12 + / -4.79%.

The present application relates to the technical field of high polymer, in particular to a kind of anti-aging high-performance composite material and its injection molding process.The acidized spirocyclic phosphate is prepared by adding phosphorus oxychloride, pentaerythritol and formic acid.A kind of composite flame retardant is prepared by mixing reaction of acidized spirocyclic phosphate, phosphorus heteroheptacyclo-acrylamide double bond derivative, phosphorus heteroheptacyclo-allyloxy double bond derivative and phosphorus hetero-link-benzenediol diallyl double bond derivative.Then, high-performance composite material is obtained by adding polypropylene, acrylonitrile-butadiene-styrene copolymer, compatibilizer, inorganic filler, antioxidant, anti-aging agent, composite flame retardant and lubricant, and by melt extrusion and granulation.The high-performance composite material is injection molded to obtain finished product.The finished product prepared by the present application has good flame retardancy, anti-aging property and mechanical property, so it has wide application prospect in the technical field of high polymer.

The invention discloses a preparation method of 2, 4, 6-tris (2-hydroxy-4-n-hexyloxy aryl)-1, 3, 5-triazine, and belongs to the technical field of organic synthesis.The preparation method comprises the steps that benzenediol compounds and chloro-n-hexane are used as raw materials and subjected to an etherification reaction under the action of hexahydropyridine, after-treatment is conducted, an intermediate is obtained, the intermediate is subjected to post-treatment, and the 2, 4, 6-tris (2-hydroxy-4-n-hexyloxy aryl)-1, 3, 5-triazine is obtained. Reacting the intermediate with cyanuric chloride under the action of an AlOsupported ZnO catalyst to generate 2, 4, 6-tri (2-hydroxy-4-n-hexyloxy aryl)-1, 3, 5-triazine; the raw materials in the synthesis route are cheap, easy to obtain and wide in source, and the process route can effectively reduce the generation of industrial wastewater and waste acid, so that the production cost is reduced, the yield is high, byproducts are few, and industrial production is facilitated.

A method of forming an implantable biomaterial comprising the steps of providing a polyether-diisocyanate prepolymer, reacting the prepolymer with one or more chain extender molecules typically including benzene 1,4-diol to form a mouldable polymer selected from a polyurethane or polyurethane-urea polymer or a polyurethane-urea block copolymer; placing the mouldable polymer into an implantable biomaterial shaped mould, and shaping and curing the mouldable polymer in the implantable biomaterial shaped mould to form the implantable biomaterial. An implantable biomaterial such as a heart valve leaflet is also disclosed.

The present invention relates to a process for the industrial-scale production of 5-{2-[benzyl-(1-(4-hydroxyphenyl)-1-methylethyl)amino]-1-hydroxyethyl}benzene-1,3-diol hemifumarate, a salt consisting of two molecules of 5-{2-[benzyl-(1-(4-hydroxyphenyl)-1-methylethyl)amino]-1-hydroxyethyl}benzene-1,3-diol and one molecule of fumaric acid, and having the following formula: 5-{2-[benzyl-(1-(4-hydroxyphenyl)-1-methylethyl)amino]-1-hydroxyethyl}benzene-1,3-diol hemifumarate is a useful intermediate in the synthesis of 5-[(1RS)-2-[(1RS)-2-(4-hydroxyphenyl)-1-methylethyl]-amino-1-hydroxyethyl]benzene-1,3-diol hydrobromide, which is used in the pharmaceutical field under the is known by the common name fenoterol hydrobromide.

The invention belongs to the technical field of oil exploitation, and particularly relates to a foaming agent for oil exploitation and a preparation method thereof. The preparation method comprises the following steps: (1) adding 5-heptylbenzene-1, 3-diol and a catalyst into a high-pressure reaction kettle, purging a pipeline and the reaction kettle with nitrogen, vacuumizing, stirring, heating to 80-85 DEG C, stopping vacuumizing, adding epoxypropane at one time, carrying out heating and heat preservation reaction for the first time, introducing ethylene oxide, carrying out heating and heat preservation reaction for the second time, and cooling to room temperature; and (2) adjusting the pH value to 5-6 by using phosphoric acid, cooling to below 10 DEG C, dropwise adding chlorosulfonic acid, and controlling the temperature to react to obtain the foaming agent. Based on 1 mole part of 5-heptylbenzene-1, 3-diol, the dosage of the propylene oxide is 4-20 mole parts, the dosage of the ethylene oxide is 10-80 mole parts, and the dosage of the chlorosulfonic acid is 1.8-2.8 mole parts. The foaming agent has the advantages of large foaming volume, long drainage half-life period, salt resistance, hardness resistance and temperature resistance.

The present disclosure provides hydrophobically-modified biopolymers, including hydrophobically-modified chitosans, which comprise benzenediol groups, optionally where a portion are oxidized to the corresponding quinone. The biopolymers demonstrate a surprising ability to tune mucoadhesive properties, material cohesive properties, and hemostatic action of the material, to provide next generation hemostats, among other uses. Accordingly, in other aspects, the disclosure provides compositions comprising the modified biopolymers of the disclosure as well as methods for bleed and wound treatment.

The invention discloses a multiple nested framework material MNF-2 constructed based on a dynamic B <-N bond and a preparation method of the multiple nested framework material MNF-2. The material MNF-2 is prepared from monomer molecules, 1, 4-phenylenediboronic acid and 4-chlorocatechol as raw materials; wherein 1, 4-benzene diboronic acid and 4-chlorocatechol are dehydrated to generate a boric acid ester structure, and B atoms of boric acid ester are combined with N atoms in monomer molecules to form B <-N coordinate bonds. A monomer molecule 4, 4, 8, 8, 12, 12-hexamethyl-2, 6, 10-tri (4-pyridyl)-8, 12-dihydro-4H-benzo [9, 1] quinolizino [3, 4, 5, 6, 7-defg] anthracene (monomer molecule M1 for short) is synthesized firstly, the monomer molecule M1 and a lewis acid molecule (4-chlorocatechol) are subjected to a one-pot method through a B <-N bond in a solution to effectively generate an MNF material, and a two-dimensional lamellar structure is formed. The lamellar material has excellent mechanical properties. The acting force range of the two-dimensional MNF material is further widened, and a new strategy is provided for preparation of the two-dimensional MNF material.

The application discloses a connecting peptide and application thereof in promoting glucose methylation modification of a compound. Glycosyltransferase-methyltransferase fusion protein genes connected by connecting peptides, genes LtLasS1 and LtLasS2 encoding benzenediol lactone synthetase are co-expressed, and it is determined through liquid phase and mass spectrum analysis of fermentation products that the fusion protein can realize glucose methylation modification on benzenediol lactone. The conversion efficiency of the fusion protein using DL-4 connecting peptide on benzenediol lactone is the highest, and the relative conversion rate is 65.54+ / -3.75%. In addition, the glucose methylation conversion efficiency of the artificial fusion protein constructed by feeding the substrate kaempferol is tested, and the conversion efficiency of the fusion protein using DL-4 connecting peptide on the substrate is 6 times that of the conversion efficiency of the substrate by using a single glycosyltransferase and methyltransferase respectively, and the relative conversion rate is increased to 60.12+ / -4.79%.

The application relates to the technical field of benzenediols, and discloses a method for preparing benzenediols, which comprises the following steps: carrying out an oxidation reaction of benzene and an oxidant in the presence of a titanium silicalite and an optional organic solvent; wherein the titanium silicalite comprises a doped metal element which enters the skeleton structure of the titanium silicalite, the bond length between the doped metal element and O atoms in the skeleton of the titanium silicalite is 0.02-0.55 nm, and the doped metal element comprises a group VIII and / or group IB metal element. By adopting the titanium silicalite containing the doped element as a catalyst, the conversion rate of benzene in the process of preparing phenol by benzene hydroxylation, the total yield of benzenediols and the selectivity of hydroquinone can be effectively improved.

In aspects, the present application provides hemostatic powder compositions, and methods of making and using such powder compositions. For example, the present application provides hemostatic powder compositions, comprising a modified chitosan comprising covalently attached hydrophobic grafts and / or benzenediol groups, and optionally oxidized forms of the benzenediol groups, along the chitosan backbone.

The invention belongs to the technical field of cables, and particularly relates to a polyvinyl chloride fire-resistant power cable and a preparation method thereof. And extruding and granulating the premix to obtain the polyvinyl chloride fire-resistant power cable material. The preparation method of the hybrid modified bisphenol A epoxy resin comprises the following steps: carrying out phosphate esterification reaction on phosphorus trichloride, 3-(vinyloxy) benzene-1, 2-diol and an acid-binding agent to obtain a flame retardant; performing Claisen rearrangement on the flame retardant to obtain a flame retardant precursor, and finally performing addition reaction on the flame retardant precursor and 1, 3-bis (aminopropyl) tetramethyldisiloxane to obtain the heat-stable flame retardant. The preparation method comprises the following steps: pre-curing hybrid bisphenol A epoxy resin with a heat-stable flame retardant, an antioxidant, phthalic anhydride and tetrabutyl titanate under a vacuum condition to obtain hybrid modified bisphenol A epoxy resin; the cable material disclosed by the invention can effectively improve the flame retardance, heat resistance, toughness and interface bonding capacity of the polyvinyl chloride cable.

The invention discloses a preparation method of a low-VOC (volatile organic compound) polyurethane structural adhesive, and relates to the technical field of adhesives. The low-VOC polyurethane structural adhesive prepared by the invention comprises a component A and a component B, wherein the component A is prepared from castor oil, polyester glycol, a dimethyl alcohol composite flame retardant, modified aluminum oxide and a catalyst; the component B is prepared from an isocyanate terminated prepolymer, polymethylene polyphenyl polyisocyanate and a water removal agent; the dimethyl alcohol composite flame retardant is prepared by carrying out a reaction on 5-(aminomethyl)-2-furfuryl alcohol, 5-hydroxymethylfurfural and diethyl phosphite; the modified aluminum oxide is prepared by sequentially reacting aluminum oxide with aminopropyltriethoxysilane, triglycidyl isocyanurate and 4-(2H-benzo [D] [1, 2, 3] triazole-2-yl) benzene-1, 3-diol, and the modified aluminum oxide is prepared by sequentially reacting aluminum oxide with aminopropyltriethoxysilane, triglycidyl isocyanurate and 4-(2H-benzo [D] [1, 2, 3] triazole-2-yl) benzene-1, 3-diol. The low-VOC polyurethane structural adhesive prepared by the invention has the advantages of flame retardance, heat conduction and ultraviolet aging resistance.

The invention relates to the technical field of biology, in particular to a method for extracting ulinastatin in urine. According to the prepared composite adsorbent, porous ferroferric oxide magnetic microspheres serve as cores, the surfaces of the porous ferroferric oxide magnetic microspheres are coated with silicon dioxide, amination and formylation modification are carried out, then the porous ferroferric oxide magnetic microspheres react with triethylene tetramine and 3-fluoro-4-formylphenylboronic acid in sequence, finally, ulinastatin serves as a template molecule, and 4-(2-aminoethyl)-1, 2, 4-triazolo [3, 4-b]-1, 2, 4-triazolo [3, 4-b]-1, 2, 4-triazolo [3, 4-b]-1, 2, 4-b]-1, the ulinastatin composite adsorbent is prepared from ulinastatin and 1, 2-benzenediol hydrochloride as functional monomers, the prepared composite adsorbent accurately recognizes and captures ulinastatin molecules, and adsorbs little other impure proteins and interfering substances, so that the yield and purity of ulinastatin are effectively improved; moreover, the use of strong acid and strong base is avoided, the denaturation and inactivation of ulinastatin in the treatment process can be reduced to the greatest extent by adopting the technical means of combining vacuum concentration and freeze drying, and the biological activity of the final product is effectively guaranteed.

The invention relates to an industrial large-scale preparation method of 5-{2-[benzyl-(1-(4-hydroxyphenyl)-1-methylethyl) amino]-1-hydroxyethyl} benzene-1, 3-diol hemifumarate, the salt is composed of two molecules of 5-{2-[benzyl-(1-(4-hydroxyphenyl)-1-methylethyl) amino]-1-hydroxyethyl} benzene-1, 3-diol and one molecule of fumaric acid, and the two molecules of fumaric acid are different from each other. The compound has the following structural formulas (2) and (1). The 5-{2-[benzyl-(1-(4-hydroxyphenyl)-1-methylethyl) amino]-1-hydroxyethyl} benzene-1, 3-diol hemifumarate is a useful intermediate for synthesizing 5-[(1RS)-2-[(1RS)-2-(4-hydroxyphenyl)-1-methylethyl) amino]-1-hydroxyethyl] benzene-1, 3-diol hydrobromide, and the common name of fenoterol hydrobromide in the pharmaceutical field is known by people.

The present disclosure provides a process for the preparation of 3, 5-dihydroxy-4-isopropyl-trans-stilbene [Benvimod] and related compounds. The present disclosure provides a process for the preparation of 3, 5-dihydroxy-4-isopropyl-trans-stilbene [Benvimod]. Aromatic hydrocarbon receptor (AHR) agonists are novel drugs for the topical treatment of adult plaque psoriasis. AHR agonists are considered to inhibit the release of pro-inflammatory proteins (cytokines) and to down-regulate inflammatory responses. The present invention relates to nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, nematodes, in particular, their bacterial symbionts.

The application belongs to the technical field of cables, and particularly relates to a polyvinyl chloride fire-resistant power cable and a preparation method thereof; the polyvinyl chloride fire-resistant power cable material is obtained by extruding and granulating premix; wherein, the preparation of the hybrid modified bisphenol A type epoxy resin comprises: obtaining a flame retardant by phosphate esterification reaction of phosphorus trichloride, 3-(ethylenoxy) benzene-1,2-diol and an acid binding agent; then obtaining a flame retardant precursor by Claisen rearrangement of the flame retardant, and finally obtaining a thermal stability type flame retardant by addition reaction of the flame retardant precursor and 1,3-di(amino propyl) tetramethyl disiloxane; the hybrid modified bisphenol A type epoxy resin is obtained by pre-curing the hybrid bisphenol A type epoxy resin under vacuum conditions and with the thermal stability type flame retardant, an antioxidant, phthalic anhydride and tetrabutyl titanate; the cable material can effectively improve the flame retardance, heat resistance, toughness and interface bonding capacity of the polyvinyl chloride cable.

The present application relates to the field of rubber auxiliaries, and relates to a rubber auxiliary with reinforcing and anti-aging functions. The main components of the rubber auxiliary include, but are not limited to, one or more of styrene bisphenol, benzenediol tar, polybutyl bisphenol, furan phenol tar, and benzenediol tar-formaldehyde oligomer, and one or more of dioctyl phthalate, white carbon black, phenyl silicone oil, and silane coupling agent. The composite auxiliary prepared by the method of the present application is a reactive auxiliary, which participates in the cross-linking reaction of natural rubber or synthetic rubber, and has the characteristics of a rubber plasticizer. Since it does not contain polycyclic aromatic hydrocarbons, it has the green advantage of environmental friendliness. The rubber compound prepared using the composite auxiliary has reduced energy consumption during mixing, good dimensional stability of the semi-finished product, and improved surface smoothness of the calendered rubber compound. Compared with the rubber vulcanizate without using the auxiliary, the use of the auxiliary improves the tear resistance and aging resistance of the rubber product.

An ester group functionalized pillar [6] arene stationary phase, a capillary gas chromatographic column and a preparation method and application thereof, wherein 1,4-p-benzenediol is used as raw material, 1,4-bis(10-bromodecanoxyl)benzene is obtained through etherification reaction, 1,4-bis(10-bromodecanoxyl)benzene is subjected to cyclization reaction to obtain a bromine functionalized pillar [6] arene, and the bromine functionalized pillar [6] arene is subjected to esterification reaction to obtain an ester group functionalized pillar [6] arene derivative P6A-C10-2OAc, the whole experimental operation process has mild reaction conditions, the raw materials used are cheap, the structure of the stationary phase is novel, the separation effect is obvious, the final product obtained is stable and has good performance, and the ester group functionalized pillar [6] arene stationary phase can accurately separate alkylbenzene isomers, halogenated nitrobenzene isomers and benzaldehyde isomers.

The invention discloses a warm-keeping antibacterial fabric and a preparation method thereof, and relates to the technical field of textiles. When the warm-keeping antibacterial fabric is prepared, an antibacterial agent is prepared through a reaction of 4-piperazine quinazoline and modified thiazole; the preparation method comprises the following steps: catalyzing an antibacterial agent to react with polyethylene glycol terephthalate through dicumyl peroxide, so as to prepare modified polyethylene glycol terephthalate; the preparation method comprises the following steps: reacting nano silicon dioxide with epoxy butyl trimethoxy silane, and then reacting with a modified flame retardant to prepare modified nano silicon dioxide; blending the modified nano silicon dioxide and the modified polyethylene glycol terephthalate, and spinning to obtain a polyester fabric; after the polyester fabric is subjected to UV radiation, the polyester fabric reacts with 3-vinyl benzene-1, 2-diol to prepare a polyhydroxy fabric; and padding the polyhydroxy fabric in the post-treatment liquid to obtain the warm-keeping antibacterial fabric. The warm-keeping antibacterial fabric prepared by the method has excellent antibacterial performance, flame retardant performance and warm-keeping performance.

The invention belongs to the technical field of textile material modification, and discloses a high-dose ultraviolet protection fabric and a preparation method thereof. The preparation method comprises the following steps: mixing a benzenediol compound, tetraethylenepentamine and a buffer solution to obtain a modified solution, putting a fabric into the modified solution for reaction, and then putting the fabric into a catalyst dispersion liquid for reaction to obtain the high-dose ultraviolet protection fabric. By utilizing the characteristic that the structure of benzenediol is extremely easily oxidized into benzoquinone, the benzenediol and tetraethylenepentamine are subjected to nucleophilic addition reaction through Schiff base reaction to generate a copolymer in a low polymerization state, and the copolymer can be further crosslinked to generate a catechol-tetraethylenepentamine polymer which is deposited on the surface of the fabric. The introduction of the polymer can provide aromatic amino groups and aromatic ring groups for the fabric, and the reactivity is improved. MnOx with a unique electronic structure, wide band gap energy and stable optical performance is combined with cyclodextrin, so that the ultraviolet-proof performance of the fabric is greatly improved.

The present invention relates to a co-crystal of dexamethasone (DEX) and a benzenediol, the co-crystal consisting of a 1:1 molar ratio of DEX and a benzenediol. The benzenediol can be catechol (CAT) or resorcinol (RES). The co-crystal of DEX and a benzenediol is formed by milling crystalline DEX with crystalline benzenediol combined in a 1:1 molar ratio. The milling can be performed at room temperature. The co-crystal can be heat annealed or exposed to moisture to enhance co-crystal formation. The DEX-CAT or DEX-RES co-crystal can be included in a medicament for the treatment of allergy, asthma, rhinitis, cancer, diabetes, anemia, ulcer, and viral infection. The DEX-benzenediol co-crystal can be screened to provide particles in the range of 10 to 45 pm, which can be used for intranasal administration, with improved dissolution properties.

The invention provides a positive electrode, an electrolyte, a low-temperature adaptive sodium-ion battery and a preparation method of the low-temperature adaptive sodium-ion battery. Sodium salts (sodium saka propionate, sodium cromoglycate, biotin sodium, 1, 2-benzenediol sodium salt and the like) are added to the positive electrode, so that a firm CEI membrane rich in anion components is constructed, and ion transport kinetics on the surface of the positive electrode is optimized; a low-temperature cosolvent is added into the electrolyte, and the weak coordination capability of the low-temperature cosolvent promotes more anions to occupy an internal Na < + > solvent sheath, so that the ion-dipole interaction is reduced, and extremely high ionic conductivity and rapid sodium ion migration can be maintained; a film-forming additive is added into the electrolyte to optimize an electrode interface, improve the stability of a solvent and enhance the overall electrochemical performance of the electrolyte; through the improvement in the three aspects, the internal resistance of the battery in a low-temperature environment is systematically reduced, so that rapid migration of sodium ions in the charging and discharging process is promoted, and the sodium ion battery has excellent low-temperature adaptability.

The invention relates to a method for producing a low carbon intensity oil comprising the steps of: a. providing a feed mixture comprising a carbonaceous material and an organic solvent selected from methanol, ethanol, propanol, isopropanol, buthanol, isobuthanol, pentanol, hexanol butanediol, benzene diol, benzene triol, glycerol, ethylene glycol, polyethylene glycol, propylene glycol, acetone, methyl ethyl ketone (MEK), toluene, benzene, hydroxy methyl furfural (HMF), phenols, alkoxyphenols, alkylphenols, creosol, vanillin, formic acid, acetic acid, citric acid or a combination thereof in a concentration of at least 5 % by weight; b. converting the feed mixture at pressures in the range 20 bar to 150 bar and at temperatures in the range 250 °C to 430 °C thereby producing a converted feed mixture; c. passing the converted feed mixture to a first separator operating at pressures in the range 20 to 150 bar and temperatures in the range 250 to 430 °C thereby producing a first gas stream and a first liquid stream; d. cooling the first gas stream to temperature in the range 120 °C to 180 °C and feeding it to a second separator operating at a pressure in the range 20 to 80 bar thereby producing a second gas stream with a reduced content of condensable and second liquid stream comprising recovered condensables; e. cooling the first liquid stream to a temperature in the range 150 °C to 300 °C and feeding it to a third separator operating at a pressure of 1 to 20 bar thereby producing a third gas stream and third liquid stream comprising the crude low carbon intensity oil with a minimum moisture content and a fourth liquid stream comprising water and optionally suspended solids.

The invention relates to the technical field of pigment preparation, in particular to a composite pigment and a preparation method thereof. The inorganic pigment powder, the dynamic cross-linking agent, the functionalized nano additive mixture, the light stabilizer compound, the dispersing agent and the defoaming agent are reasonably proportioned, so that uniform mixing and stable dispersion of the components are realized. According to the pigment, catechol-based acrylate and acrylamide-based borate are utilized to construct a dynamic self-assembled network structure, nanoscale dynamic crosslinking is realized by virtue of reversible covalent bonds, a continuous and stable three-dimensional network is formed, the interface bonding force and the structural toughness are remarkably improved, and the pigment has a self-repairing function. The light stabilizer is fixed in a network in a covalent binding manner, so that migration and failure are effectively prevented, and the light stability and weather resistance of the pigment are remarkably improved. According to the composite structure, high color fastness and long-acting durability are guaranteed, the problems of component layering and performance degradation of a traditional pigment are solved, and the comprehensive performance of the pigment is remarkably improved.

The invention relates to the technical field of modified petroleum resin, in particular to modified petroleum resin with a high softening point and high cohesiveness and a preparation method of the modified petroleum resin. The preparation method of the modified petroleum resin comprises the following steps: under the action of a Lewis acid catalyst, benzenediol and divinyl benzene are subjected to an alkylation reaction, and a product is subjected to flash evaporation at 210 DEG C and-90 kPa to remove unreacted raw materials and is recycled; and mixing the resin liquid with polyisobutylene succinic anhydride according to a mass ratio of (1-20): 1, and reacting to obtain the product. The softening point of the modified petroleum resin is 125-170 DEG C, the Gardner color number is smaller than 3, the VOC content is smaller than 0.5%, the modified petroleum resin has excellent initial viscosity, damp-heat aging resistance and high-temperature thermal stability, the compatibility with a rubber matrix is good, the Mooney viscosity of a rubber material can be effectively reduced, the mechanical property can be guaranteed, and the modified petroleum resin can be applied to the rubber industrial fields of tire production, waste tire recycling and the like.

The application provides a high-performance liquid chromatography detection method for cosmetic intermediates resorcinol, ferulic acid, phenethyl resorcinol and benzoyl peroxide, which comprises the following steps: accurately weighing resorcinol, phenethyl resorcinol, benzoyl peroxide and ferulic acid standard products respectively to prepare a mixed standard solution, and precisely pipetting the mixed standard solution to obtain a series of standard working solutions by gradient concentration dilution; mixing and stirring the sample to be detected and methanol, vortexing, centrifuging, taking the supernatant, filtering, and reserving the filtrate; and injecting the standard working solution and the treated sample solution into a liquid chromatograph respectively to perform quantitative analysis and testing. The detection method is simple in operation, rapid in analysis, strong in specificity, high in separation degree, and can be used as a detection method for the four whitening components in cosmetics, thereby providing technical support for the efficacy component detection of cosmetics.