12 results about "Isophorone" patented technology

The application discloses a self-emulsifying polyether amine curing agent and a preparation method and application thereof, and belongs to the field of high polymer materials. According to the application, components A-F are composed of polypropylene glycol or polytetrahydrofuran glycol with a molecular weight range of 800-2000, component B is selected from at least one of isophorone diamine, dicyclohexyl methane diamine or xylylenediamine, component C is at least one of epoxy derivatives containing long-chain alkyl and aromatic ring structures, component D is polyethylene glycol monomethyl ether amine with a polymerization degree range of 2-5 or an amine compound containing a sulfonic acid group, component E is a tertiary amine compound, and component F is at least one of a hindered phenol antioxidant and a phosphite antioxidant. The curing agent is reliably enhanced in reaction activity at normal temperature, the nucleophilic activity of terminal amino groups is significantly improved while excellent water dispersibility is maintained, and thus the curing rate at normal temperature is greatly accelerated.

The present invention relates to a continuous process for the liquid-phase synthesis of isophorone by alkaline self-condensation of acetone, comprising the following successive steps:a) continuous injection through a tubular reactor (R) of a stream of an aqueous alkali metal hydroxide solution and of a stream of an organic solution comprising acetone and by-products recycled via step g), followed byb) condensation reaction of acetone within the tubular reactor (R), followed byc) distillation of the reaction mixture obtained from the tubular reactor (R), followed byd) separation of the concentrated crude reaction mixture obtained from the distillation of step c) resulting in an alkaline aqueous phase and an organic phase containing isophorone, followed bye) distillation of the organic phase containing isophorone recovered in the preceding step, followed byf) distillation of the polycondensation by-products from the bottom of the column (D2) obtained from the preceding distillation, followed byg) recycling of the stream obtained from the top of the distillation column (D3) of the preceding step comprising xylitones and / or isoxylitones to the tubular reactor (R).

The application provides a high-thermal-conductivity ultraviolet-resistant MiniLED packaging film and a preparation method thereof, and relates to the technical field of packaging film materials.The high-thermal-conductivity ultraviolet-resistant MiniLED packaging film comprises the following raw materials in parts by weight: 60-70 parts of epoxy resin, 9-10 parts of genistein epoxy monomer, 10-12 parts of phosphorus-containing epoxy monomer, 6-7 parts of active diluent, 40-50 parts of functionalized aluminum nitride, and 20-24 parts of isophorone diamine.The high-thermal-conductivity ultraviolet-resistant MiniLED packaging film has excellent flame-retardant, ultraviolet-resistant and thermal-conductivity properties, and solves the problems of flammability, easy aging and poor thermal-conductivity of traditional epoxy resin packaging film materials.

This invention relates to a weather-resistant and anti-aging coating for coastal port cranes and its preparation method, belonging to the field of coating materials technology. The coating comprises component A and component B; component A includes an isocyanate-terminated prepolymer, a tri(dibenzoylmethane) ytterbium(III) complex, a spiropyran derivative, and additives; component B is obtained by dissolving isophorone diamine and 2,2'-diaminodiphenyl disulfide in ethyl acetate solvent, with a solid content of 40-60 wt%, and a molar ratio of isophorone diamine to 2,2'-diaminodiphenyl disulfide of (1-4):1; the molar ratio of isocyanate groups in component A to imino groups in component B is (1-1.05):1. This invention accelerates the exchange of dynamic disulfide bonds by constructing a photothermal conversion system, thereby enhancing the coating's ability to dissipate mechanical stress under ultraviolet light irradiation and simultaneously imparting long-term weather resistance to the coating.

This invention relates to a low-temperature, fast-drying modified phenolic amine curing agent, its preparation method, and its application. The raw material components of this low-temperature, fast-drying modified phenolic amine curing agent consist of a phenol source, an amine source, an aldehyde source, a modifier, and a solvent. The phenol source includes cashew phenol and phenol; the amine source is selected from one or more of triethylenetetramine, diethylenetriamine, and isophorone diamine; the aldehyde source is formaldehyde solution; the modifier is a silane coupling agent; and the solvent is selected from one or more of xylene, n-butanol, and propylene glycol methyl ether. This low-temperature, fast-drying modified phenolic amine curing agent, its preparation method, and its application have the advantages of low-temperature, fast drying, promotion of nano-ceramic dispersion, and a wide applicable temperature range.

The application provides a battery diaphragm, a preparation method thereof and a battery. The battery diaphragm is prepared by the following steps: preparing a spinning solution by mixing modified bamboo fiber powder and PET chips, electrospinning to obtain a PET fiber film, finishing the PET fiber film with hexanediamine solution and sulfonated finishing liquid in sequence, and washing, drying to obtain the battery diaphragm. The modified bamboo fiber powder is prepared by the following steps: oxidizing bamboo fiber powder with sodium periodate, and then reacting with an aminated DOPO flame retardant. The aminated DOPO flame retardant is prepared by the following steps: reacting 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide with diethyl maleate, and then reacting with isophorone diamine. The battery diaphragm provided by the application has excellent flame retardant performance and high ion conductivity.

The application discloses a preparation method of a ternary catalyst, a catalyst prepared by the method and application of the catalyst. The method comprises the following steps: (1) mixing a magnesium source, a zinc source, urea, citric acid and a solvent, stirring, forming a sol, drying and cooling to form a dry gel, calcining I, and obtaining a precursor; and (2) mixing the precursor and Al2O3 by a mechanical mixing method or a wet kneading method, and calcining II to obtain the ternary catalyst. The catalyst provided by the application can be applied to an isophorone reaction in an acetone condensation process, and has excellent catalytic activity and stability. The preparation method is stable, controllable and good in reproducibility.

This invention belongs to the field of oil-based coating technology, specifically relating to a high-abrasion-resistant oil-based filler-free adhesive coating and its preparation method. It consists of component A and component B. Component A contains bisphenol A type epoxy resin E-51, bisphenol A type epoxy resin E-44, hydroxyl-terminated polyester polyurethane resin, bisphenol A type phenolic resin, 1,6-hexanediol diglycidyl ether, trimethylolpropane triglycidyl ether, 3-glycidyl etheroxypropyltrimethoxysilane, propylene glycol methyl ether acetate, n-butyl acetate, cyclohexanone, leveling agent, and defoamer. Component B contains a polyamide curing agent, isophorone diamine, polyetheramine D-230, benzyl alcohol, propylene glycol methyl ether acetate, and 2,4,6-tris(dimethylaminomethyl)phenol. This invention constructs a continuous, dense, cross-linked coating film through an epoxy resin, polyurethane flexible segments, phenolic resin, reactive glycidyl ether, silane coupling component, and composite amine curing system.

The application discloses a formaldehyde fluorescent probe based on biscalicyl isophorone and a synthesis method and application thereof, and belongs to the field of organic small-molecule fluorescent probes. The probe is based on a 2-aza-Cope rearrangement reaction mechanism, takes biscalicyl isophorone as a fluorophore, introduces a high allylamine as a specific recognition unit through chemical modification, and can realize high selectivity and rapid response of a ratio type fluorescent-colorimetric dual-mode detection on formaldehyde. The probe FL-FP-4 can realize rapid and high-selectivity detection on formaldehyde, and the detection limit is as low as 0.84 µM. Experiments show that the probe can be successfully applied to quantitative analysis of formaldehyde in various food samples, has good recovery rate, can realize real-time fluorescent imaging of exogenous formaldehyde in living cells, and provides an efficient and reliable detection tool for food safety monitoring and life science research.

According to the conductive ink for the physiological electric signal flexible sensor, a conductive material, nano silicon dioxide, polyester resin and isophorone serve as raw materials, and the rheological property of the conductive ink is adjusted by adding filler such as nano silicon dioxide into the ink so as to meet the manufacturing requirements of different precisions; the invention also provides a preparation method of the physiological electric signal flexible sensor. The preparation method comprises the following steps: printing the conductive ink on the polyimide substrate by using a needle head and compressed air, and then annealing at high temperature to ensure high conductivity of the ink; a printing path adopts a computer aided design form, and sensor patterns with specific lengths for different individuals can be obtained; a bending structure is manufactured by using a laser cutting method after printing is completed, so that the whole sensor can bear a certain degree of stretching; and finally, packaging the cut sensor by using PDMS to obtain the wearable flexible sensor which can be worn on a human body.

The invention discloses a preparation method of a composite catalyst, the catalyst prepared by the preparation method and application of the catalyst. Comprising the following steps: (1) mixing a magnesium source, an aluminum source and a solvent, stirring, drying I and calcining I to obtain a precursor; and (2) dipping the precursor in a solution containing calcium salt, drying II, and calcining II to obtain the composite catalyst. The preparation method is stable, controllable and good in reproducibility. The method for preparing isophorone through acetone condensation provided by the invention adopts the catalyst provided by the invention, is high in reaction speed and high in yield, and can be applied to large-scale production.