930 results about "Butanediol" patented technology

This invention discloses a visible-light-responsive dynamically covalently cross-linked self-healing polyurethane and its preparation method, belonging to the field of self-healing materials technology. The material is prepared by reacting diisocyanate, long-chain diol, butanediol, trimethylolpropane, and a monool containing an azophenylboronic acid structure in a certain proportion at 60°C. This invention achieves visible-light-responsive self-healing of the polyurethane material by introducing a visible-light-responsive azophenylboronic acid structure into the polyurethane and utilizing the photoresponsive cis-trans isomerization of the azo structure to regulate the reversible breakage and recombination of the boron-oxygen hexacyclic ring. The visible-light-responsive dynamically covalently cross-linked self-healing polyurethane material prepared by this invention maintains high mechanical strength (16.47 MPa) while exhibiting a strength self-healing efficiency of 95.8% after 8 hours of visible light irradiation, showing broad application prospects in smart materials, anti-corrosion coatings, and other fields.

The invention provides a clostridium endophyllum engineering bacterium as well as a construction method and application thereof, and belongs to the technical field of biology, compared with a wild type strain, the clostridium endophyllum engineering bacterium can only produce acetic acid in a low-pH environment under the condition of taking CO2 and H2 as raw materials, and does not generate by-products such as ethanol, lactic acid, 2, 3-butanediol and the like. Besides, the fermentation liquor of the clostridium endophyllum engineering bacteria can be directly used as an acidic substrate to adjust the pH value of downstream yeast fermentation liquor, meanwhile, automatic addition of a carbon source is achieved, zero addition of inorganic salt in the cascade conversion process from CO2 and H2 to grease or yeast protein is achieved, and the economical efficiency and environmental friendliness of the whole process are improved.

The invention provides a bio-based 1, 4-butanediol composition as well as a preparation method and application thereof, and the bio-based 1, 4-butanediol composition comprises bio-based 1, 4-butanediol, 4-hydroxybutyric acid-(4-hydroxyl) butyl ester and bis (4-hydroxyl) dibutyl ether. The total mass content of 4-hydroxybutyric acid-(4-hydroxyl) butyl ester and bis (4-hydroxyl) dibutyl ether in the bio-based 1, 4-butanediol composition is 51 to 220 ppm. The bio-based 1, 4-butanediol composition has low hygroscopicity, and can maintain low water content after long-term storage; meanwhile, when the bio-based 1, 4-butanediol composition is used for polyester synthesis, the esterification time can be shortened, the reaction efficiency can be improved, side reactions can be reduced, and a polyester product with better damp-heat resistance stability can be obtained.

The invention relates to the technical field of preparation of water-based functional polymer materials, in particular to a preparation method of water-based polyurethane slurry for sports shoe leather, which comprises the following steps: mixing polycarbonate diol, core-shell structure graphene oxide-polycaprolactone hybrid nanoparticles and dimethylolpropionic acid, and carrying out vacuum dehydration treatment, isophorone diisocyanate is added for a reaction, and a polyurethane prepolymer is obtained; after the polyurethane prepolymer is cooled, triethylamine is added for a neutralization reaction; under violent stirring, adding a mixture composed of 1, 4-butanediol and a hyperbranched organosilicon amino chain extender serving as a flexible functional core into the neutralized prepolymer to carry out chain extension reaction, and adding deionized water to carry out reversed-phase emulsification, so as to obtain a waterborne polyurethane emulsion; standing and curing the waterborne polyurethane emulsion at a preset temperature to obtain waterborne polyurethane slurry; the finally prepared shoe leather material has excellent wear resistance and excellent low-temperature bending durability.

A magnetic nanoparticle composite microcapsule, and a preparation method therefor and the use thereof. The preparation method comprises: diluting concentrated ammonia water with absolute ethanol in which nano-Fe3O4 is dispersed, stirring same and adding ethyl orthosilicate, centrifuging same, and then performing washing to obtain Fe3O4 / SiO2 particles; dispersing same in anhydrous ethanol, then adding isopropanol containing tetrabutyl titanate, and performing a treatment to obtain Fe3O4 / SiO2 / TiO2 nanoparticles; adding polyurethane TDI prepolymer to the Fe3O4 / SiO2 / TiO2 nanoparticles, adding same to a core material, then dripping an emulsifier, and stirring same to obtain a core material emulsion; and heating same in a water bath, dropwise adding butanediol, and performing heating, stirring and vacuum filtration to obtain a magnetic nanoparticle composite microcapsule. By means of the loading with a core material having a repair function, the prepared magnetic microcapsule can actively repair damage to an insulating material caused by electrical and mechanical stress, thereby improving the reliability of a device.

The invention belongs to the technical field of copolymerization modification of degradable polyester, and relates to a depolymerization method and application of polybutylene terephthalate. During depolymerization, polybutylene terephthalate, dimethyl carbonate and dihydric alcohol are mixed and then subjected to a depolymerization reaction, and an intermediate ester is prepared; the dihydric alcohol is dihydric alcohol which does not form a ring with dimethyl carbonate in the depolymerization reaction process; the molar weight of the dimethyl carbonate is 10-30% of the molar weight of a repetitive unit of the polybutylene terephthalate; the sum of the molar weight of a 1, 4-butanediol unit in the polybutylene terephthalate and the molar weight of the added dihydric alcohol is a, the sum of the molar weight of a terephthalic acid unit in the polybutylene terephthalate and the molar weight of the added dimethyl carbonate is b, and the ratio of b to a is (1.2-1.5): 1; during application, the prepared intermediate ester is subjected to transesterification under the condition of negative pressure to obtain the copolyester. The depolymerization method is simple and easy to implement; the depolymerization product can be directly applied.

The invention belongs to the technical field of corrugated paperboards, and is characterized in that wood fibers and modified bamboo fibers prepared by reaction of allyl bamboo fibers, 1, 4-butanediol di (mercaptoacetate) and magnolol are pulped, a biodegradable water-resistant auxiliary agent is added for hydrophobic modification, papermaking and shaping are carried out to prepare water-resistant base paper, and the water-resistant base paper is prepared by the following steps: pulping the modified bamboo fibers and the biodegradable water-resistant auxiliary agent. And finally, preparing a surface paper layer, a corrugated medium paper layer and an inner paper layer from the water-resistant raw paper, and bonding and pressing to obtain the corrugated board. Magnolol groups grafted on the surfaces of the modified bamboo fibers can improve the water absorption performance of the fibers, and the hydrophobicity of the corrugated board is improved through the synergistic effect of the magnolol groups and the biodegradable water-resistant auxiliaries; the surface of the biodegradable water-resistant auxiliary agent is embedded with a carboxylated nano-cellulose structure, so that the biodegradable water-resistant auxiliary agent has deformation resistance; the epoxidized soybean oil is used as a core part and has excellent hydrophobicity; through combination of a polyphenol structure of tannic acid and hydrogen bonds of water-resistant base paper fibers, the mechanical properties of the corrugated board are improved, and the corrugated board has excellent biodegradability, hydrophobicity and mechanical strength.

The invention discloses a method for improving the performance of clostridium aerovorans for synthesizing ethanol by utilizing gas fermentation. The method comprises the following steps: enabling the clostridium aerovorans to over-express ethanol synthesis pathway genes ald, adhE1 and adhE2; the expression of genes CLJU23220, CLJU25810 and CLJU25840 in the synthetic route of the 2, 3-butanediol is inhibited; and overexpressing acetic acid reuse genes aor1 and aor2. According to the clostridium yangdall engineering bacteria constructed by the method, the yield of ethanol synthesized by fermentation of synthesis gas is increased by 700% or above and reaches 1.70 g / L or above, and the synthesis amount of a by-product acetic acid is reduced by 18%.

The invention relates to the technical field of skin care products, and discloses an anti-aging and whitening composition and a preparation method thereof.The anti-aging and whitening composition comprises anti-aging and whitening components, whitening synergistic components, moisturizing and repairing components and deionized water, and the anti-aging and whitening components comprise botryine, ergothioneine and Ectoine; wherein the mass ratio of the glassine to the ergothioneine to the ectoine is (1.2 to 2.0) to (0.4 to 0.7) to (1.0 to 1.5); the whitening synergistic component comprises one or more of nicotinamide, glabridin and tranexamic acid; the moisturizing and repairing component is prepared from one or more of sodium hyaluronate, ceramide NP, glycerol and 1, 3-butanediol. Experiments show that the mass ratio of the glassine to the ergothioneine to the ectoine is (1.2-2.0): (0.4-0.7): (1.0-1.5), so that the glassine, the ergothioneine and the ectoine show a remarkable synergistic effect (in some cases, the synergistic index CIlt is 0.85), and the anti-aging and whitening functions of the composition containing the glassine, the ergothioneine and the ectoine are improved.

This application relates to the field of polyurethane adhesive technology, and provides a thermally conductive polyurethane structural adhesive and its preparation and application methods. The thermally conductive polyurethane structural adhesive includes a first component and a second component. The first component includes a modified bio-based polyol, a polythiol, a thermally conductive filler, a first dehydrating agent, a thixotropic agent, a first catalyst, and a second catalyst. The second component includes an epoxy resin, a diisocyanate, a polyisocyanate, a thermally conductive filler, a coupling agent, a second dehydrating agent, a dispersant, and a retarder. The modified bio-based polyol is selected from at least one of modified castor oil polyol, modified oil polyol, and modified cashew nut shell oil polyol. The polythiol is selected from at least one of trimethylolpropane tris(3-mercaptopropionate), pentaerythritol tetra(3-mercaptopropionate), butanediol mercaptopropionate, and polythiol. This configuration allows the thermally conductive polyurethane structural adhesive to have a longer open time and to rapidly cure at room temperature in a short time, resulting in high initial strength.

The invention provides a BDO (1, 4-butanediol) wastewater treatment process with high sulfate content, which comprises the following steps: carrying out electrochemical oxidation treatment on BDO (1, 4-butanediol) wastewater with high sulfate content; introducing the obtained BDO wastewater into an anaerobic reaction device for anaerobic reaction to reduce sulfate ions into hydrogen sulfide and oxidize organic matters to reduce COD (Chemical Oxygen Demand); effluent sequentially flows back to the circulating desulfurization device and the air floatation device; carrying out aeration treatment in the circulating desulfurization device so as to oxidize hydrogen sulfide into elemental sulfur; elemental sulfur is recycled in the air flotation device, and part of effluent of the air flotation device and part of effluent of the anaerobic reaction device flow back to inlet water of the anaerobic reaction device; part of effluent of the air floatation device and part of effluent of the anaerobic reaction device are combined and then are sequentially introduced into an aerobic activated sludge tank with a membrane bioreactor and an ozone catalytic oxidation tank. Effluent can enter a subsequent ultrafiltration reverse osmosis membrane system to be purified, and water produced by the membrane system is recycled as reclaimed water.

The present application relates to the field of cosmetic technology, in particular to a quick-drying and shaping spray and a preparation method thereof, in particular to a hair styling product which is quickly dried, permanently shaped and has hair care effect through the synergistic effect of specific film-forming agents and volatile systems, comprising the following components: ethanol 30-50%, aminomethyl propanol 0.1-1%, butanediol 1-5%, octyl acrylamide / acrylate / methyl acrylate copolymer 5-15%, PEG-12 dimethicone 0.5-2%, keratin 0.1-2%, hydrolyzed keratin 0.1-2%, oxidized keratin 0.1-2%, aloe barbadensis leaf extract 0.5-3%, selaginella kurata extract 0.5-3%, radix falatoniae extract 0.5-3%, radix salviae miltiorrhizae extract 0.5-3%, water 20-40%, essence 0.1-2%, cetrimonium chloride 0.1-1%, phenoxyethanol 0.5-1.5%, propylene glycol 1-5%, p-hydroxyacetophenone 0.5-1.5%, chlorphenesin 0.1-0.5%, ethylhexylglycerin 0.5-1.5%.

The invention discloses a preparation method of a long-acting antistatic polymer master batch for skin-core spinning polyester, and relates to the technical field of high polymer material preparation. The hard segment comprises the following components: 100 parts of aromatic polyester, the aromatic polyester is generated through a reaction of 100 parts of an aromatic monomer and 80-120 parts of aliphatic dihydric alcohol, the aromatic monomer is dimethyl terephthalate, and the aliphatic dihydric alcohol is 1, 4-butanediol. Through cooperation of the hard segment structure, the soft segment structure, the polyaniline, the protonic acid, the ionic liquid, the fluorine-containing polymer and the sulfonate, the problems that the antistatic performance of the polyester master batch depends on environment humidity, the subsequent process is easy to lose efficacy, and the compatibility with a polyester matrix is poor are solved; the master batch can maintain a stable antistatic effect in a low-temperature and low-humidity environment, the performance of the master batch is not attenuated after subsequent procedures such as elasticizing and printing and dyeing, meanwhile, short filaments and broken filaments are avoided in the spinning process, and the continuity of polyester fiber production and the quality of finished products are improved.

The invention relates to the technical field of polyurethane materials, in particular to a non-MOCA type fitness equipment rubber coating material and a preparation method thereof. The preparation method comprises the following steps: adding polytetrahydrofuran, isophorone diisocyanate, 1, 4-butanediol, a 2, 2-dimethylolpropionic acid solution, a hydroxyl chain extender, triethylamine, deionized water and a flame-retardant filler to obtain a polyurethane emulsion; and coating the polyurethane emulsion to form a film, and drying to obtain the polyurethane adhesive film. Adding the flame-retardant filler into ethanol, and ultrasonically dispersing uniformly to obtain dispersion liquid; spraying the dispersion liquid onto the surface of a polyurethane adhesive film to obtain a pretreated polyurethane adhesive film; and carrying out layer-by-layer self-assembly on the surface of the pretreated polyurethane adhesive film for 5-6 times to obtain a finished product. The finished product prepared by the invention has excellent flame retardant property, antibacterial property and mechanical property, thereby having wide application prospect in the technical field of polyurethane materials.

The invention provides a sandwich-structure bidirectional film-forming composition and a preparation method and application thereof, and relates to the technical field of sunscreen, the preparation method comprises the following steps: mixing isododecane, trimethylsiloxy silicate ester and disteardimonium hectorite to obtain an oil phase mixture; mixing butanediol, the sodium hyaluronate cross-linked polymer and the like to obtain a water-phase mixture; homogenizing the oil phase mixture and the water phase mixture; performing curing reaction and homogenizing pretreatment. According to the sandwich structure disclosed by the invention, the disteardimonium hectorite is taken as a carrier, an oil phase forms an initial hydrophobic membrane, the oil phase expands when encountering water and sweat, sunscreen protection is synergistically enhanced, and the prepared composition of the sandwich structure is good in stability.

The invention discloses fluorine-containing bio-based epoxy resin as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The preparation method of the fluorine-containing bio-based epoxy resin comprises the following steps: enabling octafluoropentyloxy glycidyl ether as a fluorine unit to react with dihydric alcohol to obtain fluorine-terminated side chain butanediol, enabling the fluorine-terminated side chain butanediol to react with isocyanate to obtain a polyurethane prepolymer, and performing boric acid end capping on the polyurethane prepolymer by using 3-aminophenylboronic acid to obtain the fluorine-containing bio-based epoxy resin. The fluorine-containing bio-based epoxy resin (FBPU-ER) is prepared by the following steps: adding fluorine-containing polyurethane resin and phenylboronic acid into epoxidized soybean oil to obtain phenylboronic acid modified fluorine-containing polyurethane resin (FBPU), carrying out boric acid treatment on the epoxidized soybean oil by using 3-aminophenylboronic acid to obtain phenylboronic acid modified epoxy resin (BER), and finally, mixing the phenylboronic acid modified fluorine-containing polyurethane resin and the phenylboronic acid modified epoxy resin to obtain the fluorine-containing bio-based epoxy resin (FBPU-ER). The fluorine-containing bio-based epoxy resin prepared through fluorine-containing modification and toughening design has good mechanical properties, stability and self-repairing performance.

The invention discloses a composition for preventing and treating eggplant root rot, and relates to the technical field of biological prevention and treatment. The composition consists of three parts, namely a double-stranded RNA (Ribonucleic Acid) delivery body controlled by a kaolinite nanotube-metal polyphenol network-boric acid ester, a nitric oxide / hydrogen sulfide double-pulse microcapsule and volatile organic compound particles of beta-cyclodextrin cross-linked aerogel, wherein the three parts are matched according to the total mass ratio of 1: (0.8-1.5): (0.8-1.2). Through structural design, time sequence release of non-overlapping peak values is realized, and a prevention and control mode for inhibiting environment enhancement host precise silencing is formed. The deliverer can be selectively disintegrated under the condition of pathogen-induced organic acid, iron chelating agent and hydrogen peroxide, so that the targeted release of the double-stranded RNA is realized; the double-pulse microcapsule respectively releases nitric oxide and hydrogen sulfide in a transplanting stress stage and an early disease stage, and induces host defensive gene expression; the aerogel particles continuously release 2, 3-butanediol and aromatic aldehyde to inhibit germination of pathogenic bacteria and serve as rhizosphere signals to enhance host resistance.

The invention discloses a modified waterborne polyurethane adhesive and a preparation method thereof, and relates to the technical field of adhesives. The carbon dioxide-based polycarbonate polyol is prepared from the following raw materials in parts by mass: 70 to 84 parts of carbon dioxide-based polycarbonate polyol, 8 to 9.6 parts of hexamethylene diisocyanate, 3 to 3.6 parts of isophorone diisocyanate, 0.01 to 0.012 part of dibutyltin dilaurate, 10 to 12 parts of N-methyl pyrrolidone, 3.5 to 4.2 parts of dimethylolpropionic acid, 0.1 to 0.5 part of 1, 3-butanediol, 0.1 to 0.5 part of a catalyst and 0.1 to 0.5 part of a catalyst. The adhesive is prepared from the following components in parts by weight: 1 to 1.2 parts of 1, 4-butanediol, 21 to 25.2 parts of modified polyurethane dispersion, 2 to 2.5 parts of silane-terminated dynamic cross-linking agent, 2.8 to 3.4 parts of triethylamine, 40 to 60 parts of acetone, 200 to 220 parts of deionized water and 10 to 12 parts of ethylenediamine aqueous solution. By introducing the modified polyurethane dispersion and the silane-terminated dynamic cross-linking agent, the base material universality, water resistance and temperature resistance of the adhesive are effectively improved.

The invention relates to the technical field of wet tissues, in particular to an antibacterial sanitary wet tissue and a preparation method thereof. The antibacterial sanitary wet tissue comprises a fiber substrate and antibacterial liquid. The wet tissue is free of alcohol and quaternary ammonium salt, safe to use and suitable for nursing people with sensitive skin and infants. Glycerin, butanediol, panthenol, allantoin and sodium hyaluronate have a synergistic effect, and moisturizing and skin barrier repairing are provided. The wet tissue is prepared by adopting a conventional spraying process and a low-temperature condition and can be directly applied to an existing wet tissue production line without additional equipment. The product still keeps the antibacterial effect under high-temperature and high-humidity storage conditions, and is suitable for commercial circulation and long-term storage.

The invention discloses a sialic acid mild brushing acid composition and application thereof, and relates to the technical field of cosmetics. The sialic acid mild brushing acid composition comprises sialic acid and a solvent, the mass concentration of the sialic acid is 2%-15%, and the solvent is selected from at least one of 1, 3-propylene glycol, butanediol, dipropylene glycol and water. The sialic acid is creatively used as one of the mild brushing acid components, can soften old and waste cutin mildly and promote cutin exfoliation and permeation and absorption of the sialic acid, so that the sialic acid can fully play a skin protection role, has an excellent mild cutin exfoliation effect and has the effects of improving hyperpigmentation and coarse pores; and a dynamic balance skin care strategy of breaking while standing and breaking while standing can be realized. The prepared cosmetics have better moisture retention and safety, repair barriers through moisture retention, improve pigmentation through oxidation resistance, stimulate collagen to remodel a supporting structure to improve coarse pores, and finally consolidate the health state of the skin through immunoregulation.

The invention discloses high-strength plastic particles as well as a preparation method and application thereof, and belongs to the technical field of high polymer material modification. The plastic particle is prepared from high-density polyethylene, hyperbranched polyesteramine containing a diurea group, a layered double metal hydroxide-polypyrrole nano hybrid, a maleic anhydride grafted ethylene-octylene copolymer, an antioxidant and calcium stearate. Wherein the hyperbranched polyesteramine containing the diurea group is prepared by reacting pentaerythritol with citric acid to generate a citrate framework and then reacting with diphenylmethane diisocyanate and 1, 4-butanediol; the layered double hydroxide-polypyrrole nano hybrid is prepared by carrying out in-situ polymerization and coating on magnesium-aluminum layered double hydroxides through a pyrrole monomer. According to the plastic particle, the tensile strength, the heat resistance and the flame retardance are remarkably improved through synergistic enhancement of the hyperbranched polyesteramine and the nano hybrid, and the plastic particle can be applied to the fields of automobile bumpers, high-voltage cable sheaths, weather-proof plates for buildings and the like.

The invention relates to the technical field of manufacturing of coated paperboards, in particular to frame paper for cigarettes and a preparation process of the frame paper. The problem that the mechanical property and the barrier property cannot be considered at the same time in the prior art is solved. According to the frame paper for the cigarettes, the bleached hardwood pulp and the softwood pulp are compounded, and the calcium carbonate and the nanocellulose crystals are added to prepare the high-uniformity modified paper base; then, polycaprolactone diol, isophorone diisocyanate, dimethylolpropionic acid and 1, 4-butanediol are subjected to a reaction, aminopropyltriethoxysilane is used for blocking, obtained polyurethane emulsion is mixed with gelatinized starch and flaky kaolin step by step, and the composite coating is prepared; coating double surfaces of the modified paper base with the composite coating, and performing step-by-step drying, hot-pressing shaping and curing to obtain the paper. Through multi-stage cooperation of paper base-coating-process, the frame paper has excellent mechanical properties, high printing stability and high barrier property, and is suitable for the field of high-grade cigarette packaging with strict performance requirements.

The invention discloses a skin-tightening anti-wrinkle essence and a preparation process thereof, and relates to the technical field of cosmetic preparation, and the preparation process comprises the following steps: obtaining animal umbilical cord tissue, culturing, collecting cell culture supernatant after culture, carrying out low-speed centrifugation to remove cells and dead cells, and carrying out concentration, filtration and sterilization through a tangential flow membrane technology to obtain the skin-tightening anti-wrinkle essence. The animal umbilical cord extract is obtained; the preparation method comprises the following steps: mixing the animal umbilical cord extract with water, butanediol, glycerol, hydroxypropyl tetrahydropyrantriol, 1, 2-hexanediol, trehalose, p-hydroxyacetophenone, allantoin, hydrolyzed sodium hyaluronate, sodium hyaluronate, tetrahydromethylpyrimidine carboxylic acid, xanthan gum and essence, homogenizing under a stirring condition, and standing for defoaming. By constructing an active stable microenvironment and an efficient transdermal delivery system, the technical problem that the animal umbilical cord extract serving as a core component is easy to inactivate and difficult to absorb is solved, and a faster and more stable skin structure remodeling effect is realized by utilizing the synergistic effect of the animal umbilical cord extract and functional components.

The invention discloses a preparation process of coating slurry for a lithium ion battery diaphragm. Comprising the following steps: step 1, uniformly mixing polyether polyol, a modified additive, dibutyltin dilaurate, dimethylolpropionic acid and isophorone diisocyanate, under a protective atmosphere, raising the temperature to 80-90 DEG C, reacting for 3-4 hours, then adding 1, 4-butanediol, continuously reacting for 3-4 hours, after the reaction is finished, cooling to 40-50 DEG C, then adding triethylamine, stirring for 30-40 minutes, and then, carrying out heat preservation for 30-40 minutes, so as to obtain a polyurethane prepolymer; slowly adding deionized water to obtain a polyurethane adhesive; 2, inorganic particles, a polyurethane adhesive and a dispersing agent are mixed and stirred at the normal temperature for 10-12 h, and the coating slurry is obtained. The flame-retardant battery diaphragm has the beneficial effects that the flame-retardant unit and the modified additive of the quaternary ammonium salt group are introduced into a polyurethane adhesive system, so that the prepared battery diaphragm has excellent flame retardance, enhanced mechanical property and good electrolyte wettability.

This invention discloses a high-transmittance insulating ink for back-contact batteries and its preparation method, belonging to the technical field of insulating inks. The insulating ink comprises the following components by mass percentage: 60%~64% base resin, 1%~2% thiol, 2%~4% tackifier, and 25%~30% diluent; wherein the base resin is a hydroxyl-terminated polyester-modified acrylate, the thiol is ethylene dithiol, the tackifier is at least one of terpene resin, C5 petroleum resin, and C9 petroleum resin, and the diluent is at least one of 1,4-butanediol diacrylate, pentaerythritol triacrylate, and dipropylene glycol diacrylate. This invention utilizes the reaction of the dithiol's dithiol group with the hydroxyl groups (-OH) or double bonds in the hydroxyl-terminated polyester-modified acrylate to form thioether bonds (-S-) or thioester bonds, constructing a three-dimensional cross-linked network, thereby significantly improving the hardness and transmittance of the cured resin system. The reasonable combination of tackifier and diluent allows the ink to achieve high adhesion while maintaining hardness.

The invention belongs to the technical field of foaming polyurethane, and provides a microsphere foaming polyurethane material, a base plate and a preparation method and application of the base plate, raw materials are prepared from a polyol component and an isocyanate component according to the proportion that the isocyanate index is 1.05-1.15; wherein the polyol component is prepared from the following components in parts by mass: 60 to 65 parts of polytetrahydrofuran polyol, 10 to 15 parts of poly trimethylene ether glycol, 6 to 8 parts of polypropylene oxide polyol A, 6 to 10 parts of polypropylene oxide polyol B, 4 to 6 parts of 1, 4-butanediol, 0.5 to 1.5 parts of trimethylolpropane, 0.3 to 0.5 part of a catalyst, 0.8 to 1.5 parts of a foam stabilizer, 0.5 to 0.7 part of a dispersing agent EFKA-4040 and 0.1 to 0.3 part of polyether modified polysiloxane BYK-333; 0.4 to 0.6 part of expansion microspheres and 0.1 to 0.3 part of water. According to the technical scheme, the problem that a polyurethane material in the prior art cannot have low compression set and excellent fatigue resistance at the same time is solved.

The application discloses a kind of high flame-retardant tpe materials and preparation method thereof, by polytetrahydrofuran, modified monomer and 4,4'-dicyclohexyl methane diisocyanate are reacted, chain extension is used with 1,4-butanediol, finally join flame-retardant additive, form branched structure, and the molecular structure of the pte material is branched structure, and molecular chain segment contains organic silicon composite organic phosphorus structure, when heat decomposition, can generate phosphoric acid, poly-metaphosphoric acid and other acidic substances, these acidic substances will catalyze pte molecule to occur dehydration reaction, accelerate its crosslinking, organic silicon chain segment will produce inorganic silicate or silicon-carbon, and then form a dense carbon layer on the surface of material, can heat insulation and oxygen isolation, prevent combustible gas to escape outward and oxygen diffusion inward, and slow down the further thermal decomposition of internal material, prevent carbon layer from being burnt through or collapse under high temperature, improve the durability of barrier, so that pte material has good flame-retardant effect.

The invention relates to the technical field of skin care essence, in particular to double-layer essence with an anti-aging effect and a preparation method thereof.The double-layer essence with the anti-aging effect is composed of a water phase layer and an oil phase layer; the water-phase layer is prepared from the following raw materials in percentage by mass: 3-8% of hydroxypropyl tetrahydropyrantriol, 0.1-0.5% of tetrahydromethylpyrimidine carboxylic acid, 0.01-0.1% of a pepper kava extract, 1-5% of lactobacillus / soybean milk fermentation product filtrate, 1-5% of vitamin C ethyl ether, 1-5% of acetylchitosamine, 3-8% of 1, 3-butanediol and the balance of water. The invention relates to an anti-aging mask which comprises the following components in percentage by weight: 1-10% of 1, 3-butanediol, 0.01-0.1% of sodium hyaluronate, 0.1-0.5% of a buffer system, 5-10% of glycerol and the balance of deionized The oil phase layer is prepared from the following raw materials: 0.5-2% of ascorbyl tetraisopalmitate, 11-44% of compound plant-derived grease and 0.05-0.3% of tocopheryl acetate, and the problems that existing essence oil is lack of a multi-dimensional synergistic anti-aging effect, and the stability and transdermal absorption efficiency of water-soluble active ingredients and oil-soluble ingredients are difficult to consider are solved.

Provided herein is a non-naturally occurring microbial organism having a methanol metabolic pathway (MMP) that can enhance the availability of reducing equivalents in the presence of methanol. Such reducing equivalents can be used to increase the product yield of organic compounds produced by the microbial organism, such as 1,4-butanediol (BDO). Also provided herein are methods for using such an organism to produce BDO.

The invention discloses an aged SBS modified asphalt repair type regenerant and a preparation method thereof, and the regenerant is prepared by mixing aromatic hydrocarbon oil with 1, 4-butanediol diglycidyl ether and then mixing with rubber powder. Wherein the dosage of each component is as follows: 3-8 parts of aromatic hydrocarbon oil, 0.5-2 parts of 1, 4-butanediol diglycidyl ether and 8-10 parts of rubber powder. The repairing type regenerant can uniformly improve the high-temperature performance, ductility, recovery rate and other performance of SBS asphalt, and the problem of imbalance caused by prominent or backward individual indexes due to single components is avoided. And finally, the comprehensive performance of the regenerated asphalt is superior to that of the aged asphalt and is better than that of the common mixed regenerated asphalt, so that the comprehensive quality improvement of the performance of the aged SBS modified asphalt is realized.