7 results about "Isobutyramide" patented technology

The present invention relates to a cosmetic product, said product consisting of a substrate based on cellulose fibers impregnated with a cosmetic composition containing N-[4-(2,4-dihydroxyphenyl)-1,3-thiazol-2-yl]-2-methylpropanamide (INCI: isobutyramidothiazyl resorcinol).

The invention belongs to the technical field of oil exploitation, and discloses a plugging agent for rebuilding a shaft of a low-efficiency horizontal well and a preparation method of the plugging agent, the plugging agent is prepared from the following raw materials in parts by weight: 100 parts of water, 26-31 parts of a composite monomer, 0.35-0.55 part of a functional monomer, 0.012-0.016 part of an initiator, 0.9-1.3 parts of a cross-linking agent and 0.055-0.075 part of a stabilizer; the composite monomer is a mixture of acrylamide and 2-acrylamido-2-methyl-1-propanesulfonic acid, and the composite monomer is a mixture of acrylamide and 2-acrylamido-2-methyl-1-propanesulfonic acid; the functional monomer is a mixture of 1-vinyl imidazole and N-vinyl caprolactam; the initiator is prepared by mixing sodium azodiisobutyramide propanesulfonate and lauroyl peroxide. According to the invention, the azodiisobutyramide sodium propanesulfonate and the lauroyl peroxide are compounded and synergistically realize uniform monomer polymerization and dense gel.

The invention discloses a rapid detection method of isobutyramido thiazolyl resorcinol in cosmetics, and belongs to the technical field of safety detection and analysis of cosmetics. Thin-layer chromatography is taken as a main line, separation, 254nm and 365nm dual-band ultraviolet observation, 105 DEG C thermal activation enhancement and three-channel color development recheck of ferric trichloride, vanillin-sulfuric acid and phosphotungstic acid are sequentially completed, and the detection result is accurate. The method comprises the following steps: acquiring multilayer evidences of physical separation, optical response and chemical reaction, establishing a standardized ratio shift value according to upper and lower interior labels and a solvent front edge, extracting indexes such as brightness and color difference, dispersing displacement and intensity signals into five-bit bar codes, realizing fault-tolerant matching by using a Hamming distance, outputting positive, confirmation or negative conclusions, and determining the accuracy of the result. And generating a report containing the original image and the parameters. The method is oriented to complex matrixes such as emulsion, face cream, essence, mask liquid, lipstick and eye shadow, by means of multi-mechanism cross validation and bar code type fusion interpretation, the false positive and false negative risks are remarkably reduced, and the result consistency and the rechecking efficiency are improved.

The invention discloses 1, 3-bifunctional isobutyramide pyridinium salt, a preparation method and application of the 1, 3-bifunctional isobutyramide pyridinium salt in antiviral drugs, and belongs to the field of drug synthesis. The preparation method comprises the following steps: under the protection of argon, by taking (3-(2-fluorophenyl)-2, 2-dimethyl propionyl) (pyridine-2-yl) amide as a raw material and dichloroethane as a solvent, adding palladium acetate, iodobenzene diacetate, water and acetic acid, and reacting to obtain 1, 3-hydroxyl / acetoxy pyridinium salt; the preparation method comprises the following steps: by taking N-(3-((2-(2-fluoro-4-phenylbiphenyl-3-yl)-2-methylpropionyl) oxy)-2, 2-dimethyl propionyl) pyridinium as a raw material and toluene as a solvent, adding palladium acetate, 4, 5-diazafluorene-9-one, iodobenzene diacetate, potassium carbonate and acetic anhydride, and reacting to obtain the 1, 3-diacetoxypyridinium salt. The synthesis process of the 1, 3-bifunctional isobutyramide pyridinium salt is simple and convenient, and the reaction conditions are mild; meanwhile, the pyridinium salt has good anti-enterovirus activity and is expected to become a medicine for effectively treating EV-A71 infection.

The invention relates to the field of fluorine-containing compounds, in particular to a preparation method of heptafluoroisobutyronitrile. The preparation method comprises the following steps: S1, by taking hexafluoropropylene, fluoride salt and bis (trichloromethyl) carbonate as raw materials, preparing bis (heptafluoroisopropyl) ketone by adopting a'one-pot method 'reaction; s2, carrying out ammonolysis on the bis (heptafluoroisopropyl) ketone to obtain heptafluoroisobutyramide; and S3, dehydrating the heptafluoroisobutyramide to prepare the heptafluoroisobutyronitrile. The method has the advantages of cheap and easily available raw materials, low toxicity, mild reaction conditions, easy implementation, strong controllability, high safety and easy industrial production.

The application discloses a catalyst for heptafluoroisobutyramide dehydration reaction and a preparation method thereof, relates to the field of catalysis technology, and the catalyst comprises an active component, a carrier, an additive and a complexing agent, wherein the active component is monodispersed high-valence metal-oxygen species, the carrier is one or more of porous silica or porous gamma-Al2O3, the additive refers to one kind of nitrate salt containing Na, K or Cs, and the complexing agent is one of acetic acid, citric acid, urotropine, cetyltrimethylammonium bromide or cetyltrimethylammonium hydroxide; the high-valence metal-oxygen species refers to M-O x , M is one of W, Mo, V, Cr, Mn or Co, and X=1.0-3.0. The preparation method comprises the steps of dissolving, impregnating, drying, calcining and the like. The active component in the catalyst is highly dispersed, has excellent catalytic dehydration performance, has high atomic utilization rate, the preparation method is simple, no three wastes are discharged, and the catalyst has a good industrial application prospect.

The present disclosure provides a method of preparing heptafluoroisobutyronitrile by a gas-phase catalysis. The method includes removing one water molecule from heptafluoroisobutyramide gas to obtain heptafluoroisobutyronitrile by a catalyst. The catalyst includes an oxide of a siderophile element, and the siderophile element includes a moderately siderophile element or a highly siderophile element. The moderately siderophile element is selected from the group consisting of tungsten, molybdenum, tin, gallium, and any combination thereof, and the highly siderophile element is selected from the group consisting of osmium, iridium, ruthenium, rhenium, titanium, and any combination thereof. In the present disclosure, the catalyst is utilized for catalytic dehydration, a cost is low, a water waste, a gas waste and a solid waste are less, a gas-phase continuous reaction can be achieved, and the method is suitable for industrial production. Furthermore, the catalyst has a high catalytic activity and a long catalytic life.