12 results about "Phorone" patented technology

The invention relates to a bio-based fabric conversion process, which belongs to the technical field of fabrics, and comprises the following steps: mixing glycerol, itaconic acid and 4-toluene sulfonic acid according to a mass ratio of (9.0-10.0): (12.5-13.5): (0.01-0.02), introducing nitrogen for protection, heating to 140-160 DEG C, carrying out melt polycondensation reaction for 2-4 hours, vacuumizing, carrying out vacuum dehydration treatment for 1-3 hours, and cooling to obtain hydroxyl-terminated hyperbranched polyester; the hydroxyl-terminated hyperbranched polyester is dissolved in anhydrous acetone, isophorone diisocyanate and dibutyltin dilaurate are added, the mass ratio of the isophorone diisocyanate to the hydroxyl-terminated hyperbranched polyester is (1.0-1.2): 1, the mixture is stirred at the constant temperature of 50-60 DEG C for a reaction for 1.5-2.5 h, an isocyanate-terminated prepolymer is prepared, and the isocyanate-terminated hyperbranched polyester-dibutyltin dilaurate copolymer is obtained. The formed flexible cross-linked network can effectively disperse stress concentration when the fibers are subjected to external force, and accumulation of stress on a single cross-linked point is avoided.

This invention discloses a fluorescent probe that simultaneously distinguishes between hydrogen peroxide and glutathione. The chemical structure of the probe is as follows: This fluorescent probe ingeniously combines a 1,8-naphthalenedimide fluorophore and an isophorone fluorophore, achieving for the first time a dual-channel simultaneous detection of hydrogen peroxide and glutathione. When reacting with glutathione, it emits 500 nm green fluorescence at an excitation wavelength of 380 nm; when reacting with hydrogen peroxide, it emits 680 nm near-infrared fluorescence at an excitation wavelength of 560 nm. The two emissions differ by 180 nm, and the spectra do not interfere with each other, allowing for the selective simultaneous detection of hydrogen peroxide and glutathione. This probe exhibits excellent selectivity for detecting hydrogen peroxide and glutathione, high fluorescence quantum yield, and a large Stokes shift, showing great promise for applications in analytical chemistry, life sciences, and biomedicine.

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 present application relates to the preparation method of fire-retardant, light-resistant, low VOC, easily permeable water-based polyurethane coating, polytetrahydrofuran ether diol, polyol are added in the reaction container, after mixing, stirring and drying 1~2h to remove water, cooling, adding isophorone diisocyanate, dibutyltin dilaurate, stirring under the condition of 85~95℃ for 1~2h, polyurethane prepolymer is obtained; hyperbranched flame retardant is added to the polyurethane prepolymer for primary chain extension, stirring reaction, the system is cooled, dimethylol propionic acid is added for secondary chain extension reaction, cooling, adding alkyl glycoside, adding char former, stirring for 1h, adding triethylamine, adding acetone, stirring to reduce viscosity, after reducing to 25~30℃, adding water, adjusting the speed of stirrer to 2000r / min, adjusting pH to 7, adding saturated sodium bisulfite and ethyl carbamate, reacting at room temperature, filtering and precipitating, adjusting pH to 7~8, the fire-retardant, light-resistant, low VOC, easily permeable water-based polyurethane coating is obtained, the obtained polyurethane has the advantages of fire-retardancy, low VOC and light resistance.

The invention belongs to the technical field of memory foam preparation, and particularly relates to a slow-rebound memory foam preparation method and system. The preparation method comprises the following steps: (1) mixing dimethylol dihydroxy ethylene urea, dimethylol ethylene urea resin, polyether glycol, isophorone diisocyanate and acetone to obtain a first mixed solution; (2) mixing sodium alginate powder, nano nickel, nano titanium dioxide and ethylene glycol to obtain a second mixed solution; (3) mixing polylactic acid and acetone, heating at 180-200 DEG C, uniformly stirring, adding the first mixed solution, the second mixed solution, polyurethane powder and a penetrant T30, continuously uniformly stirring at 180-200 DEG C, homogenizing at 180-200 DEG C for 30-40 minutes, adding sodium bicarbonate, ammonium carbonate and dimorpholinyl diethyl ether, foaming, pouring into a mold, cooling and demolding; and (4) padding the demolded memory foam in silicone oil, and drying at 60-70 DEG C to obtain the slow-rebound memory foam. The prepared memory foam is not prone to deformation and good in air permeability.

The application relates to the technical field of coatings, and discloses a preparation method of impact-resistant high-strength polyurethane coating and application of the impact-resistant high-strength polyurethane coating in stone materials. The preparation method comprises the following steps: taking tri(2-hydroxyethyl) isocyanurate, 2,2-dimethylol propionic acid, epichlorohydrin and N-benzyl ethanolamine as raw materials, and performing esterification reaction, substitution reaction and ring-opening reaction to obtain a triazine-based hyperbranched polyol. Taking phenyl dichlorophosphine and ethylene glycol as raw materials, substitution reaction is performed to obtain phenyl dihydroxy phosphine oxide. Taking polyethylene glycol as a soft segment, isophorone diisocyanate as a hard segment, phenyl dihydroxy phosphine oxide as a chain extender and the triazine-based hyperbranched polyol with a hydroxyl group as a terminal, a polyurethane emulsion is prepared, and further, the impact-resistant high-strength polyurethane coating is obtained. The polyurethane coating prepared by the application has good impact resistance, flame resistance and strength.

The present application relates to a kind of isophorone diamine composition and isophorone diisocyanate composition.The content of hydroxyl nitrile compound in the isophorone diamine composition is 0.0001-0.0500wt%, preferably 0.0001-0.0300wt%, more preferably 0.0005-0.0300wt%.The isophorone diisocyanate composition prepared using the isophorone diamine composition has moderate reactivity with polyols, and the reaction solution has lower color and turbidity, and less residual monomer.

This invention provides an aqueous polyurethane emulsion, its preparation method, and its application in hot stamping coatings. The preparation method of the aqueous polyurethane emulsion includes the following steps: S1, 60-70 parts of side-chain polyether polyester and 30-40 parts of hydroxyl-terminated polybutadiene undergo a vacuum dehydration reaction, followed by the addition of isophorone diisocyanate and a heat-maintaining reaction until the -NCO content reaches 8-10%; S2, the system is cooled and a disulfide chain extender, 1,4-butanediol, and acetone are added for a chain extension reaction until the -NCO content decreases to 3-5%; S3, hydroxyethyl acrylate is added to the system for an end-capping reaction until the -NCO disappears, yielding a prepolymer; S4, under shear conditions, water is added to the prepolymer for dispersion and emulsification, followed by vacuum distillation to obtain the aqueous polyurethane emulsion. This invention, through molecular structure design of aqueous polyurethane, introduces nonionic hydrophilic side chains, disulfide bonds, and hydroxyethyl acrylate, resulting in excellent elongation at break, toughness, water absorption, and wash fastness.

The invention discloses an endoplasmic reticulum targeting fluorescent probe as well as a preparation method and application thereof in viscosity detection and viscosity imaging. The preparation method comprises the following steps: mixing and stirring isophorone, malononitrile, piperidine and glacial acetic acid in absolute ethanol, heating to a reflux state, and reacting to obtain an isophorone derivative; the isophorone derivative and 4-hydroxybenzaldehyde are subjected to a condensation reaction to prepare the endoplasmic reticulum targeting fluorescent probe. The fluorescent probe has specific fluorescent response to cell viscosity change, when the viscosity is respectively in the range of 0.89-17.96 cP and 17.96-945 cP, the fluorescence intensity of the probe and the viscosity of a solution present a good linear relationship, and the fluorescent probe has endoplasmic reticulum targeting ability, can be used for detecting inflammation and viscosity imaging in an ER stress process, and also can be used for detecting viscosity imaging in an ER stress process. And the visual imaging of the viscosity of the endoplasmic reticulum in a ferroptosis-mediated acute alcohol stomach injury model can be realized.

This invention relates to a salt spray resistant and anti-aging curing coating and its preparation method, belonging to the field of coating technology. The coating includes modified epoxy resin, ternary nanocomposite filler, composite light stabilizer, hydrophobic eutectic solvent, polysiloxane-modified aromatic amine curing agent, and bio-based polyurethane curing agent. The modified epoxy resin is prepared by reacting bisphenol F epoxy resin, KH-560 silane coupling agent, and tetrabutylammonium bromide, followed by the addition of bi-terminated epoxy silicone oil, 3,3'-dithiodipropionic acid, and p-toluenesulfonic acid, and then by adding pentaerythritol phosphate and antioxidant 1010. The polysiloxane-modified aromatic amine curing agent is prepared by reacting m-phenylenediamine as a matrix, KH-560 silane coupling agent, diphenylsilanediol, and dibutyltin dilaurate. The bio-based polyurethane curing agent is prepared by reacting castor oil-modified polyol, isophorone diisocyanate, dibutyltin dilaurate, dimethylolpropionic acid, and trimethylolpropane.

Provided are a dual-gel composition, a cosmetic product prepared by using a composition in the form of an oil-in-water dual-gel, and a method for preparing the composition and its use for preparing cosmetics, in particular sunscreen cosmetics. The composition comprises a dual-gel structure including an aqueous phase gel and an oil phase gel, wherein the composition includes the following components: (1) a (C1-C2 alkyl) acrylic acid / (C1-C2 alkyl) acrylic acid C10-C30 alkyl ester copolymer as an aqueous phase thickener; (2) an oil phase thickener comprising one or more selected from the group consisting of : (i) cellulose-based materials; (ii) dextrin / inulin fatty acid esters; (iii) glutamic acid and derivatives thereof; (iv) eicosanedioic acid and derivatives thereof; (v) polyamides; (vi) isophorone diisocyanate (IPDI) copolymers or sebacic acid copolymers; (vii) crosslinked polymers containing repeating units derived from hexamethylene-1, 6-diisocyanate (HDI) and trimethylolhexyllactone; (viii) hydroxystearic acid and derivatives thereof; (ix) polybutene; (x) waxes; (xi) sorbitan esters; and (xii) sucrose fatty acid esters; (3) a polyglycerol emulsifier having an HLB value of 0 to 8; and (4) a solvent.

The invention relates to the technical field of functional coating materials, and discloses antibacterial and waterproof leather and a preparation method thereof.The antibacterial and waterproof leather comprises a leather base material and a surface coating, and the surface coating comprises 5-15% of waterproof and antibacterial monomers and 40-60% of polytetrahydrofuran glycol derivative polymers; 20 to 35 percent of an isophorone diisocyanate cross-linked product; 3 to 8% of a 2, 5-anhydro-1-azido-1-deoxy-D-glucitol modifier, and the balance of a solvent; the waterproof antibacterial monomer is formed by grafting 2-guanidino benzimidazole and trifluoroepoxypropane through a terminal carboxyl group intermediate; the surface coating is of a gradient structure and comprises a bottom layer, a middle layer and a surface layer. The three-step gradient structure of the bottom layer, the middle layer and the surface layer is constructed, so that collaborative optimization of air permeability, mechanical strength and super-hydrophobicity is realized. The bottom layer with low solid content forms a porous buffer layer, the middle layer provides mechanical support, and the surface layer with high solid content constructs a compact protective network. Antibacterial groups are directionally distributed on an interface layer, and hydrophobic chain segments are enriched on the surface, so that the antibacterial property, the waterproof property and the flexibility are efficiently unified.