36 results about "Propyl benzoate" patented technology

The invention discloses a method for qualitatively and quantitatively analyzing a key volatile component in cigarette bead blasting. The method comprises the following steps: (1) performing full-scanning analysis on a bead blasting isopropanol solution by a gas chromatography high-resolution time of flight mass spectrometry (GC-TOF/MS) to obtain a full-scanning atlas; (2) determining an unknown material and screening the key component by an area normalization method semiquantitative result; (3) determining the mass spectrometric qualitative and quantitative parameters of the key component by taking n-propyl benzoate as an internal standard substance and by combining gas chromatogram secondary mass spectrometry (GC-MS/MS); and (4) drawing a regression curve by a gas chromatogram secondary mass spectrometry combined multi-monitoring scanning mode, and analyzing the content of the key component accurately and quantitatively. The method is simple in operation, high in sensitivity, high inaccuracy degree, short in analysis time and suitable for performing qualitative and quantitative analysis on various volatile and semi-volatile organic compounds in bead blasting simultaneously.

The invention belongs to the technical field of adhesives, and relates to a modified urea-formaldehyde resin with a low content of formaldehyde. The modified urea-formaldehyde resin with a low content of formaldehyde comprises urea-formaldehyde resin and propyl benzoate. The invention also relates to a preparation method of the modified urea-formaldehyde resin, and a use of the modified urea-formaldehyde resin in production of fiberboards. The modified urea-formaldehyde resin can be used in the fields of building, decoration and industrial manufacturing, and can be used in bonding sheets, ceramics and plastics as an adhesive.

The invention belongs to the technical field of shaving boards, and relates to a low-formaldehyde-content shaving board. The low-formaldehyde-content shaving board comprises wood chip particles, adhesive and propyl benzoate and is suitable for building, decorating, industrial manufacturing and the like.

The invention relates to a snail mask containing the extract of active-enzyme mucus from a snail and a preparation method thereof, specifically to a preparation method for a snail mask containing a filtrate of the secreta of the snail, belonging to the field of cosmetics. According to the invention, raw materials for the snail mask are composed of water, glycerin, propylene glycol, the filtrate of the secreta of the snail, hydrolyzed vegetable protein, extract of Aloe barbadensis, pearl shell extract, hyaluronic acid, dipotassium glycyrrhizinate, allantoin, disodium ethylene diamine tetraacetate and propyl benzoate. The snail mask provided by the invention is suitable for dry skin lacking in water and having coarse pores.

The invention belongs to the technical field of fiberboards, and relates to a low-formaldehyde-content high-density fiberboard. The fireboard comprises fibers, adhesive and propyl benzoate. The formaldehyde-content of the high-density fiberboard is low, the density is 800-900 kg/m<3>, the internal bonding strength is 1.5-1.65 MPa, and the static bending strength is 35-80 MPa. The low-formaldehyde-content high-density fiberboard can be used in the fields of building, decorating, industrial manufacturing and the like.

The invention belongs to the technical field of dyeing and finishing in the textile industry, and relates to an environment-friendly polyester dyeing repair agent and a preparation method thereof. Theenvironment-friendly polyester dyeing repair agent is prepared by blending the following raw materials in percentage by weight: 20-30% benzyl alcohol, 10-20% propyl benzoate, 10-20% of benzyl alcoholpolyoxyethylene ether, 10-20% of fatty alcohol polyoxyethylene ether, 5-10% of Tween-80, 8-15% of tristyrylphenol polyoxyethylene ether, 5-10% of a solvent and 2-4% of an efficient defoaming agent. Compared with the prior art, the environment-friendly polyester dyeing repair agent has the advantages that not only can the level dyeing effect of the polyester fiber dyeing process be improved, colorspots, dying defects and the color difference be prevented, the long-term colorfastness be achieved, the color fading be prevented, and the high elasticity be achieved, but also the coloring rate canbe improved during the use process, the product quality stability can be high, and the abrasion-resistance property can be excellent; and the environment-friendly polyester dyeing repair agent further has the advantages of being low in production cost, achieving energy conservation and emission reduction, and beneficial to environmental protection.

The invention discloses a dual interior labels gas chromatography test method for determining contents of various organic ingredients in a cellulose acetate fiber filter stick. Interior labels adoptedcomprise n-heptadecane and n-propyl benzoate and are respectively used for determining contents of triacetin, menthyl lactate and menthol carboxamide with higher contents and contents of 1, 2-propylene glycol and menthone with lower contents. According to the method, the additive amounts of the selected interior labels differ widely, the interior labels can be respectively used for measuring contents of five organic substances with different contents, different structures or different natures, and the method has the advantages of being less in mutual interference, high in measurement accuracy, small in error and short in time.

The invention belongs to the technical field of fiberboards, and relates to a preparation method for a fiberboard with low formaldehyde content. The method comprises the steps that an adhesion agent and propyl benzoate are added into fiber slurry with moisture content ranging from 20 wt% to 40 wt% and mixed evenly, and the processed fiber slurry is dried to obtain a mixture with moisture content ranging from 8 wt% to 15 wt%; prepressing is conducted on the mixture to obtain a blank, and then isostatic pressing processing is conducted on the blank to obtain a board blank; hot pressing, cooling, hardening and tempering and sanding are sequentially conducted on the board blank to obtain a fiberboard. The fiberboard is suitable for the fields of buildings, decoration, industrial manufacturing and the like.

The invention provides a preparation method of moringa oleifera cream and moringa oleifera emulsion by taking moringa oleifera as a raw material as well as the moringa oleifera cream and the moringa oleifera emulsion that are prepared according to the method. The moringa oleifera cream comprises the following raw materials in parts by weight: 1 part of steareth-2, 1.5 parts of steareth-21, 2.5 parts of cetostearyl alcohol, 4 parts of simmondsia chinensis seed oil, 3 parts of PDMS (polydimethylsiloxane), 2 parts of isopropyl palmitate, 10 parts of moringa oleifear seed oil, 0.2 part of methyl benzoate, 0.1 part of propyl benzoate, 8 parts of glycerol, 0.2 part of tocopherol, 70 parts of water, 0.1 part of sodium hyaluronate, 0.5 part of papain and 0.1 part of pelargonium graveolens oil. The invention also discloses the moringa oleifera emulsion. Through clinical verifications, the moringa oleifera cream and the moringa oleifera emulsion prepared by the invention have the effects of softening epidermic cells, so as to smooth, tender and nourish skin, supplement amino acid of human bodies, remove melanin and inhibit generation of tyrosinase. Therefore, dull yellow of the skin is effectively improved.

The invention discloses heavy anti-corrosion powder, which is prepared from the following raw materials in percentage by weight: 50 to 55 percent of epoxy resin, 6 to 9 percent of curing agent, 0.1 to 0.4 percent of dimethylimidazole, 4 to 5.5 percent of auxiliary agent, 9 to 11 percent of preservative, 22 to 25 percent of filler and 0.6 to 0.9 percent of carbon black.The anti-corrosion agent is one of sodium benzoate, sodium diacetate and propyl benzoate, and the filler is one of pore plate corrugated filler and a metal Pall ring. The invention relates to the technical field of heavy anti-corrosion powder. According to the heavy anti-corrosion powder, the adhesive force of the heavy anti-corrosion powder can be greatly improved through the composition of the epoxy resin, the curing agent, the dimethylimidazole, the auxiliaries, the preservative, the filler and the carbon black, so that the heavy anti-corrosion powder has very good adhesive force with a base material, and the cost is low.

The invention discloses a propyl p-diethylaminomethylene benzoate compound and a preparation method thereof. The structural formula of the propyl p-diethylaminomethylene benzoate compound is as follows: Its preparation method is to react propyl p-formamidobenzoate with POCl3 in an organic solvent under alkaline conditions at a controlled temperature of 50-90°C for 0.25-4 hours to obtain a propyl p-isocyanobenzoate solution , then add diethylamine and Cu2O, control the temperature at 70-130°C and carry out the reaction for 2-24h, after the obtained reaction solution is allowed to stand and separate into layers, take the oil layer, the obtained water layer is extracted with ethyl acetate, take the oil layer, and combine twice The obtained oil layer is rotary evaporated to remove ethyl acetate, and column chromatography is used to spin off the solvent to obtain the propyl-p-diethylaminomethyleneaminobenzoate compound with insecticidal and bactericidal effects. The reaction process of the preparation method is simple and the reaction conditions Mild, the yield reaches about 80%.

The invention discloses a biological mould inhibitor harmless to a human body. The biological mould inhibitor harmless to the human body is prepared from the following components in parts by weight: 10 to 14 parts of cresol, 4 to 9 parts of dehydroacetic acid, 2 to 7 parts of phenethyl alcohol, 9 to 13 parts of chlorhexidine iodine, 2 to 6 parts of hexadecylpyridinium chloride, 1 to 6 parts of cassia oil, 5 to 10 parts of hexadienoic acid and 3 to 11 parts of propyl p-hydroxybenzoate. Through the way, the biological mould inhibitor harmless to the human body, disclosed by the invention, is capable of changing the osmosis of a cell serous membrane, inhibiting inactivation of cells caused by elimination of enzymes and metabolites in the cells, is reasonable in use and harmless to the human body and can be degraded into normal components, and the use is not affected.

The invention provides a flame-retardation waterproof paint and a preparation method thereof. The waterproof paint comprises the following components: polyisocyanate, chlorinated paraffin, a catalyst,a latent curing agent, a chain extender, octyl epoxy stearate, magnesium hydroxide, aluminium hydroxide, fatty alcohol polyoxyethylene ether sodium sulfate, mannitol, polyepoxysuccinic acid, sodium benzotriazole, hydroxybenzoic acid propylester, and lignosulfonic acid. The waterproof paint is suitable for construction of a wood building roofing, and has the advantages of strong adhesion force with a wood base surface, good waterproof effect, and good flame retardation effect.

The invention discloses a method for determining chemical components in tobacco dry distillated flavor. The method comprises the following steps: (1), with ethanol as a solvent, respectively preparing a menthol standard solution and a propyl benzoate standard solution; (2), mixing uniformly the tobacco dry distillated flavor with the menthol standard solution and the propyl benzoate standard solution so as to obtain a sample solution to be measured; (3), carrying out gas chromatography-mass spectroscopy analysis on the sample solution to be measured so as to obtain a determination result of the chemical components in the tobacco dry distillated flavor. By adopting the method for determining chemical components in the tobacco dry distillated flavor, the chemical components in the tobacco dry distillated flavor can be simply, quickly, and accurately determined to guide improvement on processes for tobacco dry distillated flavor preparation.

The invention discloses an improved concrete compression-resistant modifier, which is made by the following raw materials in parts by weight: 2.5-7.4 parts of slag powder, 2.5-3.3 parts of sodium carbonate, 1.5-3.7 parts of ferric oxide, 2.3-3.5 parts of cetyl trimethyl ammonium bromide, 0.8-3.5 parts of polyvinyl alcohol, 1.5-2.9 parts of phenyl salicylate, 3.3-5.8 parts of propyl p-hydroxybenzoate and 0.8-2.4 parts of guanidine hydrochloride. The possibility in capturing air by the concrete is reduced, and the stability of the concrete is improved. The concrete is continuously stirred up to keep the suspended state of solid components in the concrete slurry, and the phenyl salicylate, the propyl p-hydroxybenzoate and the guanidine hydrochloride are added to reduce the possibility in mixing the air in the concrete and prevent foam from being easily generated. After the concrete sets, the internal structure of the concrete is stable without clearances, the compression-resistant performance of the concrete is improved, the service life of the concrete is prolonged, and the maintenance cost is reduced.

The invention discloses an improved concrete durability modifier. The improved concrete durability modifier is prepared from the following raw materials in parts by weight: 2.5-6 parts of ethylene oleate, 1.2-3.5 parts of sodium palm oil fatty acid methyl ester sulfonate, 1.3-2.6 parts of polyacrylonitrile, 5-10 parts of deionized water, 0.8-2.2 parts of propylparaben, 2.5-3.6 parts of polyamide-chloromethyl ethylene oxide resin and 0.8-1.8 parts of cellulose acetate butyrate. Compared with the existing modifier, by adopting the improved concrete durability modifier disclosed by the invention, the water reducing ratio is more than 6% and the segregation is obviously reduced; the pumpability and the workability of concrete are obviously improved; when the gas content is not more than 6%, the flexural strength of the concrete can be improved by 10%-30%; the anti-freezing property is improved by more than 10 times; the deicer-scaling resistance is improved by above 5 times; other durabilities, such as resistance to salt crystallization pressure damages, resistance to alkali-aggregate reaction damages and the like, are also obviously improved, the water solubility and the compositeness with other admixtures are good, the service life of the concrete is prolonged and the maintenance cost is reduced.