55 results about "Isopropylthioxanthone" patented technology

A radiation curable inkjet fluid includes a radiation curable composition including at least 25 wt % of a vinylether acrylate and at least 15 wt % of a polymerizable compound including at least three acrylate groups, each wt % being based upon the total weight of the radiation curable composition; and a photoinitiator including a tertiary amine group and 0 to 3 wt % of isopropylthioxanthone based upon the total weight of the radiation curable inkjet fluid. Also, an inkjet printing method using the radiation curable inkjet fluid.

A radiation curable inkjet fluid includes a radiation curable composition including at least 25 wt % of a vinylether acrylate and at least 15 wt % of a polymerizable compound including at least three acrylate groups, each wt % being based upon the total weight of the radiation curable composition; and a photoinitiator including a tertiary amine group and 0 to 3 wt % of isopropylthioxanthone based upon the total weight of the radiation curable inkjet fluid. Also, an inkjet printing method using the radiation curable inkjet fluid.

The invention discloses a light-cured three dimensional printing material and a preparation method thereof. The light-cured three dimensional printing material comprises, by mass, 40-45 parts of polyester modified epoxy acrylate, 8-12 parts of cycloaliphatic epoxy resin, 8-10 parts of trihydroxymethylpropyl trimethylacrylate, 16-20 parts of 1,6-hexanediol diacrylate, 2-8 parts of triethyleneglycol divinyl ether, 1.5-2 parts of isopropylthioxanthone, 1.5-2 parts of 2-phenyl-2,2-dimethylamino-1-(4-morpholinylphenyl)-1-butanone, 1.5-2 parts of a reactive tertiary amine co-initiator, 0.5-2.7 parts of 4-isobutylphenyl-4'-methylphenyliodonium hexafluorophosphate, 0.5-2 parts of an anthraquinone derivative, 0.5-2 parts of a promoter and 4-8 parts of a flexibilizer. Shaped parts made by using the light-cured three dimensional printing material have the advantages of low shrinkage, high toughness and high shaping precision.

The invention relates to a methacrylic acid-styrene-hydroxyethyl acrylate copolymer dispersant and a preparation method and application thereof. The methacrylic acid-styrene-hydroxyethyl acrylate copolymer dispersant is synthesized with styrene, methacrylic acid and hydroxyethyl acrylate as monomers, and cerous chloride-2-isopropyl-thioxanthone complex, cerous chloride-anthraquinone complex or cerous chloride-diphenyl ketone complex as a photoinitiator through photo initiated radical copolymerization. The dispersant provided by the invention can have a good dispersion effect on inorganic powder and pesticide preparations, and can be compounded with a wetter to take good dispersion effect on pesticide water-borne preparations.

The invention relates to a preparation process of 2-isopropylthioxanthone of light trigger, in particular to a process for preparing 2-isopropylthioxanthone by using 4-isopropylbenzenethiol and 2-chlorobenzoic acid as the main raw material through the reaction steps of condensation, exsolution, neutralization, cyclization, hydrolyzation, recrystallization, and the like. The preparation process is characterized in that the 4-isopropylbenzenethiol and the 2-chlorobenzoic acid are used as the raw materials and are condensed by using tetraline as solvent under the alkaline (lithium hydroxide) condition, the mol ratio of the 4-isopropylbenzenethiol, the 2-chlorobenzoic acid and the lithium hydroxide is 1:1-1.5:2-2.5, and preference for 1:1.05:2.1; the condensation temperature is 180-190 DEG C, the product is prepared by the reaction steps of exsolution, neutralization, cyclization, hydrolyzation, recrystallization, and the like after the reaction is performed for 6h. The invention has easily obtained raw materials, can improve the performability of the process, can greatly lower the production cost because the produced lithium hydroxide of the side product can be sold through the treatment and has high purity of produced products without isomer.

A radiation curable inkjet fluid including a radiation curable composition comprising at least 25 wt% of a vinylether acrylate and at least 15 wt% of a polymerizable compound comprising at least three acrylate groups, both based upon the total weight of the radiation curable composition; and a photoinitiator comprising a tertiary amine group and 0 to 3 wt% of isopropylthioxanthone based upon the total weight of the radiation curable inkjet fluid. An inkjet printing method is also disclosed.

The invention relates to a photoinitiator for ultraviolet curing ink and a preparation method and application of the photoinitiator. The photoinitiator is prepared from 40 to 55 parts of free radical type photoinitiator, 5 to 10 parts by weight of cationic photoinitiator and 5 to 10 parts o by weight f photosensitizer; the free radical photoinitiator is prepared from 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, bis(2,4,6-trimethylbenzoyl)-phenyl phosphine oxide, 2-isopropylthioxanthone and 2-methyl-2-(4-morpholinyl)-1-[4-(methylmercapto) phenyl]-1-acetone; the cationic photoinitiator is prepared from mixed triaryl hexafluorophosphoric acid sulfonium salt and eta6-isopropylbenzene cyclopentadienyl iron hexafluorophosphate. The photoinitiator has good photo-initiation efficiency, can solve the problem of low initiation efficiency under LED (Light-Emitting Diode) light, is low-cost and has wide application prospect.

A process for producing an arginine-rich peptide mixture and the application thereof in cervical cancer therapy is provided. The process includes the following steps: A suspension of walnut meal and egg albumin is pretreated with ultrahigh pressure, and then digested by alkaline proteinase and papain in separated steps with the ultrasonic and microwave-assisted extraction. The peptides of interest are isolated from filtration supernatant obtained after the enzyme digestion by reversed phase high-performance liquid chromatography. By using the peptide mixture as a template, acrylic acid and methyl acrylic acid as functional monomers, triethylene glycol dimethacrylate as cross-linking agent, and isopropylthioxanthone in acetone as a photoinitiator, polymerization is induced by ultraviolet light to form a surface imprinted membrane for isolating and enriching the peptides of interest from the supernatant. The arginine content in the peptide mixture is more than 18%. The arginine-rich peptide mixture is able to strongly suppress the proliferation of human cervical cancer Hela cells. The approach is applicable to reduce the cost of production and speed up the commercialization of large-scale production.

The invention discloses a thermoplastic fiber-reinforced epoxy composite and applications thereof. The thermoplastic fiber-reinforced epoxy composite is prepared by taking epoxy resin and crylic acid as raw materials, thermoplastic fiber aramid woven cloths as reinforcing materials, N,N-dimethylaniline as catalyst, 4-methoxyphenol as polymerization inhibitor, trimethylolpropane triacrylate as diluted monomer, isopropylthioxanthone as photoinitiator, silane coupling agent as modifier, and metahanol as solvent, firstly synthesizing epoxy acrylate, diluting with the trimethylolpropane triacrylate, synthesizing photosensitive resin, dipping the thermoplastic fiber aramid woven cloths with the photosensitive resin, and carrying out fast forming of a novel electric car body support frame on photocuring forming equipment. The photocured electric car body support frame prepared by using the method has excellent performances, is environment-friendly, and has no harm influence on human body and ambient environment, and the curing effect meets the national standard.

The present invention relates to a preparation method of novel cationic photoinitiator10-(4-biphenyl)-2-isopropyl-thiadiazole ketone sulfur hexafluorophosphate. The 2-isopropyl thioxanthone is used as raw material; the mixed oxidant of cerium ammonium nitrate and sodium hypochlorite is used; the hydrohalogenic acid is added for catalysis. After the oxidation reaction, the intermediate sulfoxide can be made; the sulfoxide and biphenyl react to get the intermediate of sulfonium salt through salt reaction. Finally, the mixed solvent of alcohol categories and water is used; and the aqueous solution potassium hexafluorophosphate is dropped into the solution of the intermediate sulfoxide to get the product. The method of the present invention can reduce the dosage of expensive oxidant, and quicken the speed of oxidation reaction. Besides, the ion exchange reaction is complete and the solvent is easy to be recycled and reused; the purity of the target product is high; the optical solidification effects are good; the whole process is easy for realization of industrial production.

The invention relates to the technical field of communication fiber coloring solidification, in particular to optical fiber coloring ink capable of being solidified by LED. The ink is characterized by being prepared from, epoxy acrylic resin or urethane acrylate, Isopropyl tri(dioctylpyrophosphate) titanate, polyacrylic acid, 3-Aminopropyltriethoxysilane, cellulose nitrate, isopropyl alcohol, 2-Isopropylthioxanthone, sodium benzenesulfonate, benzophenone, oleic acid, a compound photosensitizer, 4-Methoxyphenol, an antifoaming agent BYK088 and a flatting agent BYK344, wherein, the compound photosensitizer is obtained by uniformly mixing a photosensitizer 184, a photosensitizer 1173 and a compound photosensitizer 907 with a mass ratio of (1 to 3):1(1 to 2). The invention further discloses a preparing method of the optical fiber coloring ink capable of being solidified by LED. The optical fiber coloring ink capable of being solidified by LED has the advantages of more energy conservation, faster coloring speed, better environment protection, longer service life of a curing light of a coloring device and lower coloring noise.

The invention relates to the technical field of printing inks, and concretely relates to a photo-curable printing ink. The printing ink comprises, by weight, 30-60 parts of pure acrylate, 5-8 parts of 2-isopropylthioxanthone, 4-6 parts of 4-phenylbenzophenone, 30-32 parts of dipropylene glycol diacrylate, 8-12 parts of a pigment, and 2-5 parts of an assistant. The photo-curable printing ink provided by the invention has the advantages of beautiful decoration and ideal performances.

The invention relates to a photosensitive water-soluble coating and a preparation method thereof, belonging to the technical field of coating. The photosensitive water-soluble coating comprises the following active ingredients in parts by weight: 100-120 parts of photosensitive novolac epoxy acrylic resin, 2-5 parts of photoinitiator EDAB, 1-2 parts of isopropylthioxanthone, 18-25 parts of ethoxylated trimethylolpropane triacrylate, 3-6 parts of ammonium hydroxide, 2-5 parts of thickener, 1-3 parts of zinc stearate, 0.5-2 parts of antibacterial agent, 5-8 parts of acetone, and 30-50 parts of water. The preparation method is simple, the prepared photosensitive water-soluble coating is strong in adhesive force, good in high temperature resistance property, and excellent in antibacterial property; by mainly taking water as a solvent, the pollution of the solvent type coating on the environment can be overcome, thus the photosensitive water-soluble coating is a green and environment-friendly coating and is worthy of popularization.

The invention discloses UV-LED (Ultraviolet-Light Emitting Diode) cured flexographic printing ink, which is prepared from the following components in percentage by mass: 30 to 40 percent of prepolymer, 3 to 7 percent of pigment, 5 to 7 percent of photoinitiator, 1 to 3 percent of additive and 35 to 45 percent of hexanediol diacrylate, wherein the sum of the percentages (by mass) of the componentsis 100 percent. The prepolymer is hyperbranched polyester acrylate, the pigment is yellow ink or carmine ink; the photoinitiator is any one or a composition of at least two of 819 (phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide), TPO (2,4,6-Trimethylbenzoyl-diphenylphosphine Oxide) and ITX (2-Isopropylthioxanthone); the additive is a mixture of a flatting agent and a dispersing agent; the flatting agent and the dispersing agent are polyurethane RM2020 and CF-10 respectively; further, the mass mixing ratio of the flatting agent to the dispersing agent is 1 to 1. The UV-LED cured flexographicprinting ink which is provided by the invention is low in viscosity, high in curing velocity and high in color intensity.

The invention discloses a preparation method of 2-isopropylthioxanthone. The method comprises the following steps of: reacting benzoic acid serving as a raw material with cumene and sulfur by taking a solid super-acid as a catalyst at the temperature of 80-150 DEG C; after complete reaction, cooling a reaction liquid to the room temperature, and adding toluene for extracting; filtering; recovering a filter cake serving as a solid super-acid catalyst for reuse; washing a filtrate with a saturated saline solution, and drying with absolute magnesium sulfate; concentrating under reduced pressure for removing toluene; and performing silica gel column chromatography on a concentrated solution to obtain the 2-isopropyl thioxanthone. In the method, the solid super-acid is taken as a catalyst, a technology is easy to operate, high transformation ratio is achieved, a small quantity of three wastes are produced, convenience is brought to post-treatment, and the solid acid can be used repeatedly; and the method is an economical, practical and environment-friendly technology.

The invention relates to a preparation method of a photoinitiator 2-isopropylthioxanthone. The method is concretely characterized in that 2-(4-isopropylthiophenyl)benzoic acid undergoes a ring-closingreaction under a refluxing dehydration condition to prepare the 2-isopropylthioxanthone. The method has the advantages of small use amount of concentrated sulfuric acid, small environmental pressureand good product appearance.

The invention relates to a preparation method of an inflammation-response guided tissue regeneration membrane, which belongs to the field of the surface modification of materials. An anti-inflammation drug with hydroxyl is bonded to the surface of a membrane by adopting an ester bond, carry out selective enzymolysis on the ester bond by utilizing cholesterol esterase concentrated released by macrophage when the inflammation occurs, and a responsive release effect is achieved. The method comprises the following steps: initiating by virtue of ultraviolet rays, and introducing ITXSP (isopropylthioxanthone semipinacol) into the surface of the membrane; simultaneously adding an initiator, a cross-linking agent and an allylic alcohol monomer into the activated ITXSP surface to form a hydrogel layer; enabling the drug to react with the allylic alcohol monomer to form a drug molecule containing an ester group and carbon-carbon double bond; and finally thermally initiating the drug molecule, the allylic alcohol monomer and the cross-linking agent, loading a gel layer containing the drug, wherein the drug is fixed in the membrane surface gel layer by virtue of the ester group. The inflammation-response membrane has the characteristics of excellent biological compatibility and inflammation-response drug release.

The invention discloses ultraviolet-cured plastic printing ink which is prepared from the following ingredients in mass percent content: 10 to 15% of monomer, 30 to 50% of photosensitive resin, 3 to 8% of photoinitiator and 30 to 44% of powder. The monomer is a mixture of ethoxylated pentaerythritol tetraacrylate and trimethylolpropane triacrylate, and the photoinitiator is a mixture of benzophenone and isopropylthioxanthone. The ultraviolet-cured plastic printing ink disclosed by the invention has the characteristics of quick curing, excellent adhesion, no faultage and strong base material adaptability, has excellent adhesion with plastic cement of PP, PE, PVC, PMMA, PC, PAS, PET, ABS and the like which are common plastics in printing, avoids varieties of method of leaky white, overprint and the like in continuous printing, is especially suitable for being applied to plastic base materials of cosmetics industry and has excellent adhesion. Meanwhile, the invention further discloses a preparation method of the ultraviolet-cured plastic printing ink.

The invention relates to the technical field of preparation of powdered tubes and discloses an efficient powder coating method of a straight tube. The efficient powder coating method of the straight tube comprises the steps of a, power preparation, to be specific, weighing resin glue diluent, triethylene glycol divinyl ether, bi[2-(methyl acryloyloxy)ethyoxyl]dimethyl silane, isopropylthioxanthone, a flatting agent, a dispersing agent solution, a hydrophilc agent, a defoaming agent, ethanol, water and water-soluble diffusion powder, uniformly mixing the raw materials, filtering the mixture by using filtering cloth to obtain powder syrup, adjusting the specific gravity and viscosity of the powder syrup, stirring the powder syrup uniformly and then stewing the powder syrup for standby use; b, powder-coating, to be specific, performing powder coating for the straight tube and obtaining a semi-finished product after the powder coating; c, inspection, to be specific, performing light transmittance inspection for the semi-finished product; and d, roasting, to be specific, selecting the semi-finished product which passes the inspection, and roasting to obtain a finished product. The power coating method is short in powder syrup curing time and high in working efficiency; the straight tube prepared by using the method disclosed by the invention is good in thickness uniformity of the powder layer, and the light transmittance of each part of the powdered tube is basically same. In addition, the powder layer has good bonding degree with a glass tube and is not easy to drop.

The invention discloses a preparation method of 2-isopropylthioxanthone. The method comprises the following steps: 1) performing diazotization reaction: using anthranilic acid, inorganic acid and sodium nitrite to react in water at 0-5 DEG C for 20-40 minutes and obtain diazonium salt; 2) performing condensation etherification reaction: using inorganic alkali, 4-isopropylthiophenol and the diazonium salt obtained in the step 1) to react in water at 0-70 DEG C for 2-4 hours; then adjusting the pH value to 3 with inorganic acid, filtering to obtain the solid; 3) performing dehydration cyclization reaction: placing the solid obtained in the step 2) in concentrated sulphuric acid of which mass concentration is no less than 97%, to react at 20-25 DEG C for 1-3 hours; and 4) reducing the temperature of the product obtained in the step 3), rinsing, filtering, and adding alkaline solution to layer and obtain 2-isopropylthioxanthone. The 2-isopropylthioxanthone prepared by the method is characterized by high efficiency and low energy consumption.

The invention relates to wear-resistant ultraviolet (UV) photo-curing coating. The wear-resistant UV photo-curing coating is prepared from the following raw materials in parts by weight: 2 to 3 parts of dicyclopentadiene, 3 to 4 parts of glycidyl methacrylate, 45 to 50 parts of carbamate acrylate, 10 to 12 parts of trimethylolpropane triacrylate, 2 to 5 parts of tetrabutylammonium bromide, 1 to 2 parts of yttrium oxide, 2 to 3 parts of trichloroethyl phosphate, 1 to 2 parts of resorcinol diglycidyl ether, 3 to 4 parts of isopropylthioxanthone, 8 to 10 parts of benzil dimethyl ketal and 4 to 5 parts of dispersing aid. The carbamate acrylate serves as a main material, and plastifying and reinforcing substances such as the yttrium oxide, benzil dimethyl ketal and the dicyclopentadiene are added, so that the obtained coating has high caking property, wear resistance, acid and alkali resistance and corrosion resistance. The UV coating is applicable to friction occasions, can serve as primer of hardware, zinc alloy, aluminum alloy, stainless steel and vacuum electroplating coating, and has durable performance and high curing speed.

The invention relates to stable isotopic labeled 2-isopropylthioxanthone and a synthetic method thereof. The stable isotopic labeled 2-isopropylthioxanthone is 2-isopropylthioxanthone labeled by D or 13C. The synthetic method comprises the following steps of using benzene and acetone which are labeled by stable isotopic D or 13C as raw materials; reacting the benzene and the acetone with magnesium to obtain Grignard reagent after benzene bromination; performing reduction and hydroxide radical bromination on the acetone to obtain 2-bromic propane; performing Grignard reaction to obtain isopropyl benzene; reacting the isopropyl benzene with dithio-salicylic acid; and synthesizing to obtain the 2-isopropylthioxanthone labeled by the stable isotopic D or 13C. Compared with the prior art, the stable isotopic labeled 2-isopropylthioxanthone has the advantages that a process route is simple, the 2-isopropylthioxanthone is easy to synthesize, products are easy to separate and purify, the chemical purity of the products is above 99.0%, isotope abundance is above 98.0% atom, requirements of trace detection in the field of food safety can be met fully, and economical efficiency and using value are excellent.

The invention discloses a synthesis method of photoinitiator isopropylthioxanthone. According to the method, an isopropylthioxanthone crude product is prepared from raw materials including dithiosalicylic acid and isopropylbenzene with a chlorination-friedel-crafts reaction synthesis route, and a product is obtained through high-vacuum distillation purification. The raw and auxiliary materials are easy to obtain, reaction conditions are mild, the operation is safe, simple and convenient, the conversion rate of the raw materials is high, and the product quality is stable.

There is provided a one part, actinic radiation-activated, and room temperature curable epoxy-based adhesive. There is also provided an adhesive initiator system based on an iodonium salt combined with a thioxanthone photosensitizer such as isopropyl thioxanthone. There are also provided methods of use and articles made using such one part, actinic radiation-activated, and room temperature curableepoxy-based adhesive comprising an adhesive initiator system comprising an iodonium salt combined with a thioxanthone photosensitizer.

The invention discloses a UV delayed curing adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The UV delayed curing adhesive is prepared from the following raw materials in parts by weight: 60-90 parts of epoxy resin, 5-20 parts of polycaprolactone polyol, 1-10 parts of a cationic curing agent, 0.01-0.1 part of isopropyl thioxanthone and the like. The isopropyl thioxanthone and the epoxy resin are added and matched for use, the delay time of colloid after illumination activation and the polymerization rate of the colloid after solidification can be effectively controlled, the polymerization rate of the colloid is increased to 99% or above through the reasonable dosage of the isopropyl thioxanthone, the surface of the adhesive after solidification is smooth and not sticky, and the mechanical property is good. Besides, by adding the polyethyleneimine modified graphene oxide, the body strength of the adhesive is enhanced, the tensile strength after curing is 20-40 MPa, the elongation at break after curing is 100-200%, and the anti-falling performance of the adhesive is improved.

The invention discloses a high-voltage-resisting cable material which is prepared from, by weight, 7-8 parts of fluorinated silicone rubber micro powder, 0.6-0.8 part of amino resin, 0.4-0.6 part of cerium oxide, 8-9 parts of fluorocarbon rubber micro powder, 6-8 parts of magnesium hydrate, 9-10 parts of polyacrylonitrile, 6-7 parts of polylactic acid, 3-4 parts of polyoxyethylene, an appropriate amount of dimethylformamide, an appropriate amount of composite solvent with the volume ratio of dimethylformamide to dichloromethane being 1:1, an appropriate amount of methyl methacrylate, an appropriate amount of isopropylthioxanthone, 20-25 parts of ethylene-vinyl acetate copolymer and 80-85 parts of low-density polyethylene. The cable material has the excellent heat resistance, cold resistance, high voltage resistance, weather resistance, aging resistance and the like due to the fact that the fluorinated silicone rubber micro powder, the cerium oxide and fluorocarbon rubber micro powder are adopted, and also has the excellent hydrogen type solvent resistance, oil resistance, acid-base resistance and lower surface energy, the using voltage of the cable material is increased, and the using range is enlarged; by adding the magnesium hydrate, the flame resistance of the cable material is improved, and no poison gas is decomposed out.

The invention provides a photosensitive corrosion-resistant nanomaterial and a preparation method thereof. The preparation method comprises the following steps: mixing and stirring tetraethylortho silicate, absolute ethyl alcohol, ammonia water and distilled water, heating the mixture and then dropwise adding tetraethoxysilane to obtain a mixture A; mixing and stirring gamma-chloropropyl trichlorosilane and gamma-aminopropyltriethoxysilane, and dropwise adding glycidyl methacrylate and p-Hydroxyanisole to obtain a mixture B; dripping the mixture B into the mixture A for reaction, adding octadecanamide, citric acid and beta-cyclodextrin for stirring, and then adding propylene glycol methyl ether acetate for rotary evaporation; and mixing and stirring 1-hydroxycyclohexylphenylketone, ethylene glycol dimethacrylate, isopropylthioxanthone and tripropylene glycol diacrylate, mixing all components and finally developing the solution on a copper-clad plate. The photosensitive corrosion-resistant nanomaterial provided by the invention has very high photosensitive parameters, very high photosensitivity, relatively low coefficient of thermal expansion and high thermal stability, and simultaneously has certain corrosion resistance.

The invention relates to and provides a method for preparing 2-isopropyl thioxanthone by enabling raw material 2-chloro-2'-methoxy-5'-isopropyl diphenyl ketone or 2-chloro-2'-ethoxy-5'-isopropyl diphenyl ketone to react with powdered sulfur in the presence of an alkaline substance and copper powder. The method provided by the invention is a process for preparing 2-isopropyl thioxanthone with the advantages of no use of a solvent difficult to recycle, high content, few impurities, fast reaction, low raw material consumption and simple and convenient aftertreatment.