824 results about "Isophorone" patented technology

The invention discloses a method for preparing alpha-isophorone, which comprises the following steps: pressurizing a mixture of acetone and recycled acetone to 8.0-20.0MPa under the condition of continuous steady state operation and preheating to 280 DEG C-320 DEG C; then mixing the mixture with 10 percent of NaOH solution or 10 percent of KOH solution pressurized to the same pressure; carrying out super-critical reaction for 1-3 min in a pipe type reaction vessel; decompressing the reaction liquid to 3.0-4.0MPa and entering a flashing steam tower; obtaining the recycled acetone mixture from the top of the tower; leading tower kettle liquid to enter a hydrolyzing tower to hydrolyze polymers (C12 and C15); continuously extracting hydrolyzed reaction liquid from a tower kettle of the hydrolyzing tower, cooling, decompressing to normal pressure and layering in a layering device to obtain an alpha-isophorone rough product layer and a byproduct water layer. The method for synthesizing the alpha-isophorone has short needed reaction time, few byproducts and high reaction yield and is suitable for industrialized production.

The invention provides a compound with the structure shown in the formula (I), wherein R1 is an acrylic ester group; R2 is an isophorone group, hexyl, methyl cyclohexyl, dicyclohexyl methyl, or tolyl; R3 is a tertiary amine group; m and n are the degrees of polymerization; m is not less than 2 and not larger than 20; and n is not less than 1 and not larger than 12. The invention also provides an ultraviolet light curing coating comprising the following components of 60 to 80 parts by weight of modified polyurethane acrylic ester with the structure of the formula (I): 10 to 18 parts by weight of water, 0.3 to 0.9 part by weight of aqueous flatting agent, 5 to 9 parts by weight of aqueous cosolvent, 2 to 6 parts by weight of aqueous wax auxiliary, 1.3 to 3 parts by weight of aqueous wettingagent, 0.5 to 0.7 part by weight of aqueous antifoaming agent and 3 to 5 parts by weight of photo initiator. The ultraviolet light curing coating of the invention has the advantages of excellent fingerprint resistance property, corrosion resistance property and weatherability, and rapid curing.

There is devised a novel acryl resin in which an unsaturated group introduced in an alkali soluble resin is placed at a longer distance from the resin skeleton of the alkali soluble resin, the mobility of the unsaturated group is promoted and the number of the unsaturated double bonds is increased; therefore it allows crosslinking reaction to occur easily and a functional resin portion which imparts a specific function, in particular, function of suppressing polymerization inhibition due to oxygen by introduction of an active methylene group is provided at a resin portion existing between the acryl resin skeleton and the unsaturated double bond, and a photosensitive resin composition containing thereof is to be provided. A photosensitive resin composition comprising an alkali soluble resin, an ethylenically unsaturated compound, a near infrared absorbing dye, a compound containing a halomethyl group and a compound containing an organoboron anion, wherein the alkali soluble resin comprises an acryl resin having one or more of pendant groups in which both terminals of a diol compound have been blocked with isophorone diisocyanates and then (meth)acryloyl has been added, and, an image forming material comprising a substrate, and a photosensitive layer formed by the photosensitive resin composition on the substrate, as well as an image forming method.

The invention relates to a modified waterborne polyurethane resin for artificial leather and a preparation method thereof. The modified waterborne polyurethane resin comprises formulation: the combination of any two in 6% of polyether polyol N210 with the molecular weight of 1000, 9-14% of polyether polyol N220 with the molecular weight of 2000 or 6% of polyether polyol N240 with the molecular weight of 4000; 6.5-9% of toluene di-isocyanate (TDI), 1.5-1.8% of dimethylol propionic acid, 2-4% of hydroxyl saturated polyester resin, 0.0-1% of dibutyl tin laurate, 0.8-1.5% of diethylene glycol, 0.9-1.3% of triethylamine, 0.4-0.5% of isophorone diamine, 0.5-2% of hydroxyl polyether modified siloxane with the hydroxyl value of 56 and the rest of water. The invention has the advantages of high tensile strength, good elasticity, strong adhesive force, excellent water resistance, solvent resistance and chemical resistance, better leather feeling, high cold resistance and folding strength, good combination property and remarkable environmental protection.

The invention discloses an isophorone fluorescence probe, and a preparation method and an application thereof. The structure of the fluorescence probe is represented by formula I. The preparation method comprises the following steps: adding isophorone, malononitrile and pyridine to a reaction bottle, carrying out heating refluxing under the protection of an inert gas for 18-24h, purifying, adding the above obtained pure product, p-hydroxybenzaldehyde and pyridine to the reaction bottle, carrying out heating refluxing under the protection of the inert gas for 4-18h, purifying, adding the obtained pure product, 2,4-dinitrofluorobenzene and triethylamine to the reaction bottle, stirring above materials for 8-36h, and purifying the obtained mixture to obtain the fluorescence probe. The fluorescence probe has large Stokes shift (182nm), long fluorescence emission wavelength (592nm), high sensitivity and good selectivity, can specifically detect hydrogen sulfide in organisms, environment and foods, has good biomembrane permeability and low cytotoxicity, and also has the advantages of simple synthesis route, high yield and very large practical values.

The invention discloses water-soluble polyurethane for the wood lacquer and a preparation method thereof. The water-soluble polyurethane comprises the following raw materials in parts by weight: 165-175 parts of polycarbonate diol, 131-132 parts of isophorone diisocyanate, 0.4-0.6 part of catalyst, 16.5-17.5 parts of dihydromethyl propionic acid, 2.7-3 parts of dihydroxyacetone, 18.5-19.5 parts of 1,4-butanediol, 4-5 parts of acetone, 12.5-13 parts of triethylamine, 6-7 parts of ethylenediamine, 628-638 parts of deionized water and 5-6 parts of adipic acid dihydrazide. The preparation method adopts the preparation technology combining the acetone method with pre-polymer dispersion method, thus effectively reducing the dosage of acetone and increasing the molecular weight of the generated polyurethane; and when the prepared water-soluble polyurethane dispersion forms a film, with the volatilization of water and the reduction of the pH value, the self-crosslinking reactions of ketonic carbonyl and hydrazide group can be performed, thus the after crosslinking density of the film can be increased and the hardness and water resistance of the the film can be increased.

This invention discloses a method for preparing isocyanate trimer containing silane or modified with functional linear polysiloxane. In the general chemical formula of the isocyanate trimer, R is diisocyanate-substituted methylphenyl, ethylphenyl, 1,5-naphthyl, diphenyl methane, hexamethylene, isophorone, 2,2,6-trimethyl cyclohexyl, or 4,4'-dicyclohexyl methane; R1 is saturated or unsaturated linear or branched C1-C8 alkyl, cycloalkyl, aryl or aromatic hydrocarbon homolg; R2 and R3 are C1-C6 alkyl, aryl, trialkylsilyl, or methoxyalkoxyl; a is a positive integer of 0-3; R1, R2, R3, R4 and R5 are saturated or unsaturated linear or branched C1-C12 alkyl, cycloalkyl, aryl, alkoxy or cycloalkoxy; X is -NH-, -NHCH2CH2NH-, -NHCH2CH2NHCH2CH2NH-, -N-, -NHCONH-, formula A, B or C, -S- or -O-; n is a positive integer greater than 0.

The invention discloses a method for preparing 3-cyan-3,5,5-trimethyl cyclohexanone. The method comprises the following steps of: taking isophorone as a raw material and adding hydrocyanic acid into the isophorone to perform addition reaction at the high temperature of between 100 and 200 DEG C under the action of an alkali catalyst to produce a crude product of the 3-cyan-3,5,5-trimethyl cyclohexanone; reducing the temperature to 80 to 120 DEG C, adding at least one organic acid serving as a neutralizer and a stabilizer into the reaction mixture and adding an organic solvent or a mixed solvent of the organic solvent and water into the reaction mixture; performing crystallization by cooling and filtering the mixture so as to obtain the finished 3-cyan-3,5,5-trimethyl cyclohexanone. The method can greatly reduce the production cost and has simple industrialized process and easy operation.

The invention provides an ink composition for ink-jet printing which does not cause clogging of nozzles of an ink-jet printer during printing, to thereby provide a print of desired printing quality; which ensures an appropriate drying rate of printed images; and which attains excellent color development. The ink composition for ink-jet printing, containing a pigment, a binder resin, a pigment dispersant, and a solvent, wherein the solvent is formed of (1) at least one glycol ether and at least one of a lactone compound and 2-pyrrolidone, or (2) at least one glycol ether acetate and at least one of cyclohexane and isophorone.

The invention discloses a water-based polyurethane composite emulsion and a preparation method thereof. The preparation method is characterized by comprising the following steps: by using acetone or butanone and acrylic monomer as solvents, polymerizing diisocyanate (HDI), isophorone diisocyanate (IPDI), mixed polyester polyalcohol, dihydroxymethylpropionic acid, 1,4-butanediol, trimethylolpropane monoene propyl ether, 2-hydroxypropyl acrylate and 2-hydroxyethyl acrylate to obtain carboxylic polyurethane; neutralizing with tertiary amine, and removing the solvents to obtain a self-emulsified double-bond-containing water-based polyurethane anionic emulsion; and by using the emulsion as a seed, adding acrylate monomer and a right amount interpenetrating-network crosslinking agent monomer to carry out pre-emulsification, and carrying out seed emulsion polymerization to obtain the composite emulsion in an interpenetrating network structure. The invention has the advantages of energy saving, environmental protection, high early bonding force, safe and reliable technique and stable product quality.

The invention provides a catalyst for preparing isophorone by acetone condensation method. The catalyst is sinter formed by the step that magnesium oxide or nitrate, calcium oxide or nitrate, barium oxide or nitrate, zirconium oxide or nitrate, rare earth metal oxide or nitrate and aluminium oxide are mixed and then sintered at 400-600 DEG C for 4-6 hours. The sinter contains 25.4-46.4% of aluminium element, 3-18% of magnesium element, 1.4-7.1% of calcium element, 0.8-4.2% of barium element, 0.7-1.5% of zirconium element and 0.5-6% of rare earth metal element; wherein the rare earth metal is one or two of lanthanum, cerium and yttrium. The catalyst is used for catalyzing acetone condensation reaction, can effectively improve acetone conversion and selectivity of isophorone and causes the acetone conversion and selectivity of isophorone to respectively reach more than 86% and 65%.

The invention provides a kind of lead-free environmental-friendly circuit board conductive silver paste, which is prepared by the following raw material by weights: 60 to 70 of silver powder of 20 to 30mum, 5 to 8 of copper powder of 1 to 10nm, 8 to 10 of glass powder, 5 to 7 of SnO2 powder, 5 to 8 of silver powder of 40 to 60nm, 2 to 4 of pentaerythritol tristearate, 4 to 6 of isophorone, 3 to 5 of saturated polyester resin EK410, 4 to 7 of bisphenol F epoxy resin, 1 to 2 of salicylic acid, 3 to 5 of polyurethane resin, 1 to 2 of triallyl isocyanurate, 1 to 2 of microsphere starch, 1 to 2 of fumed silica, 4 to 6 of isobutyl ketone, 6 to 8 of ethanol , 2 to 4 of butanol, and 6 to 8 of butyl acetate. The lead-free environmental-friendly circuit board conductive silver paste and the preparation method thereof are characterized in that the use amount of the silver powder is small, the printing performance is good, the yield of the circuit board is high, the conductive performance is good, lead-free environmental-friendly performance is provided, the technology is simple, the operation is convenient and easy, and the product performance is convenient to control.

The invention relates to easily-dyed aliphatic polyurethane resin, comprising the following components in percent by weight: 0.5%-1.5% of polyester polyol, 0.5%-1.5% of polycarbonate diol, 5%-7% of mixed polyether polyol, 0.2%-0.6% of chain extender, 6%-7% of isophorone diisocyanate, 2%-3% of isophorone diamine and 75%-80% of solvent. A preparation method comprises the following steps of: firstlyleading the polyester polyol, the polycarbonate diol, the mixed polyether polyol, the chain extender, the isophorone diisocyanate, the isophorone diamine and methylbenzene to react for 3-5 hours at the temperature 90-120 DEG C; and then adding isobutyl alcohol solution of the isophorone diamine, adding the solvent after a reaction system becomes viscous, leading the final viscosity of a product to be 30-50Pa s under the temperature of 25 DEG C, and ending the reaction.

The invention discloses IML gloss oil and IML printing ink, a preparation method and an application thereof. The IML gloss oil is obtained by dissolving saturated polyester resin in an organic solvent. The IML printing ink comprises an A component and an isocyanate curing agent with a mass ratio of 10:0.9-2; the A component comprises the following components: 40-89% of the IML gloss oil, 8-55% of pigment, 0.5-2% of a wetting dispersant, 0.5-1% of a defoamer, 0.5-1% of a levelling agent, 0.5-2% of a thickening agent, and 0-1.5% of extinction powder. The IML printing ink does not contain harmful or toxic substances for human body, such as benzene, toluene, xylene, isophorone and the like, and has the advantages of low odor environment and low environmental load; the IML printing ink has good adhesion performance, high-temperature ink-sweeping resistance, and tensile property, is widely applicable to fields of panels of household appliances, display screens and control panels, 3C product buttons, housing, and large-scale casings, automotive upholstery, and the like.

The invention discloses a malononitrile isophorone copper ion fluorescent probe and a preparation method thereof, and relates to the technical field of analysis and detection. The malononitrile isophorone copper ion fluorescent probe has good fluorescence property, and assists in selectively identifying copper ions in a buffering solution. The fluorescent probe has the advantages of low detection limit (only 0.2 muM), large Stokes shift, fluorescence enhancement, long-wavelength emission and visible-light discoloration. Copper ion naked eye detection can be realized with the fluorescence enhancement and visible-light discoloration properties. With the fluorescence enhancement response of the probe upon copper ions, the copper ions can be subjected to qualitative or quantitative analyses. The probe can enter HeLa cells and can show a red fluorescence image after a reaction with copper ions in the cells. Therefore, the copper ion fluorescent probe provided by the invention can be sued in copper ion detections of the environment and in biological cells.

The invention discloses a method for preparing isophorone diamine, wherein the method comprises: using phorone nitrile as a raw material, under an effect of a metal cobalt catalyst, ammonia gas and hydrogen are orderly introduced into an organic solvent, and are reacts under stirring for 1-8h at 40-180 DEG C in a pressure condition of 1-10 MPa, and after reaction, a reaction mixture is post-treated to obtain the isophorone diamine. Uniformly-dispersive and high active metal cobalt catalyst is prepared by a sol-gel method, and when the catalyst is used for preparing isophorone diamine, a conversion rate of IPN can reach 100%, and the yield of IPAD is 78.5-98.3%. The catalyst has a long service life, and after the catalyst repeats eight-time by simple filtration after catalytic reaction, the conversion rate of IPN reduces 6.3%, yield of IPDA reduces 7.8%, and catalyst activity is almost not changed.

The invention provides a reactor for preparing isophorone nitrile and a method for continuously preparing the isophorone nitrile by adopting the reactor. A plurality of millimeter to micron-sized narrow regular reaction channels which are arranged in parallel are arranged in the reactor, and inner members are arranged in the reaction channels, so that the reactor has good heat and mass transfer effects, and the dwell time can be accurately controlled, thereby obtaining a high reaction conversion rate and a high product yield. Compared with a traditional batch reactor or a common continuous tubular reactor, the method has obvious advantages on many aspects of improvement in the reaction effect in preparation of the isophorone nitrile, safety in production, energy conservation, consumption reduction and the like.

A process for preparing 3.5-xylenol features that the isophorone, liquid catalyst, and solid catalyst take part in reaction in inertial gas, and conventional collecting 3,5-xylenol.

The invention discloses tobacco sweetening agent for cigarettes and an application method of the tobacco sweetening agent, and belongs to the technical field of tobaccos. The tobacco sweetening agent is mainly composed of ethyl maltol, methyl cyclopentenolone, vanillin, isophorone oxide, methoxyacetophenone, citric acid, chamomiles, propylene glycol extract and sweet clovers. The sweetening agent is added in cigarette products when the cigarette products are produced, a relaxed and pleasant tobacco sweet feeling is given to the cigarettes under the condition that the original cigarette style is not changed, the rank of the cigarettes is improved, the tobacco sweetening agent has good compatibility with cigarette fragrance and enables the cigarette fragrance to be fine, smooth and gentle, stimulation is reduced, and aftertaste is comfortable and elegant.

The invention relates to a method for producing isophorone by catalyzed aldol condensation of acetone as an educt, reprocessing the reaction product, hydrolyzing the product stream, and separating into an organic and an aqueous fraction, obtaining isophorone from the organic fraction, distillatively reprocessing the aqueous fraction, and feeding the vapors from the head of the distillative reprocessing apparatus into the hydrolysis apparatus.

The invention relates to a polyamide-imide insulating varnish. The polyamide-imide insulating varnish is characterized in that the varnish comprises the following components in parts by weight: 100-120 parts of polyamide-imide solution and 2-5 parts of sepiolite material, wherein the polyamide-imide solution mainly comprises the following components in parts by weight: 20-35 parts of polyamide-imide resin and 20-60 parts of organic solvent; the organic solvent is one or a combination of N-methylpyrrolidone, chlorobenzene, bromobenzene, dichlorobenzene, dibromobenzene, 1-tetralone, fenchone, phorone and isophorone; and the sepiolite material mainly comprises sepiolite. The polyamide-imide insulated enamel wire provided by the invention forms a homogeneous stable system, the surface friction coefficient is below 0.30, and each index meets the International Electrotechnical Commission (IEC) standard requirement; and the polyamide-imide insulating varnish is suitable to be used as the enamel wire insulating varnish for coating the surface of the copper wire.