108 results about "P-hydroxybenzoate" patented technology

The invention discloses a preparation method of a machine-made water-soluble polyvinyl alcohol nonwoven shopping bag. The preparation method specifically comprises the following steps: (1) preparing asizing finishing agent, wherein the sizing finishing agent comprises the following raw material components in parts by weight: 10-20 parts of polyvinyl alcohol, 3-8 parts of polyol copolymer polyether, 1-3 parts of polyacrylamide hydrolysate, 2-5 parts of polyhydric alcohols, 1-3 parts of an inorganic filler, 1-3 parts of urea, 0.1-0.3 part of a wetting agent, 0.2-0.5 part of imidazolidinyl urea,0.1-0.3 part of p-hydroxybenzoate and 100 parts of water, and mixing the various components to prepare the sizing finishing agent; (2) applying the sizing finishing agent to padding finishing and coating finishing processes of polyvinyl alcohol nonwovens; and (3) performing mechanized automatic hot-seal bag making on the polyvinyl alcohol nonwovens subjected to padding or coating sizing, therebyobtaining the shopping bag. The shopping bag provided by the invention has excellent heat sealability and mechanical property and good hand feeling. According to the method, the processing efficiencyis improved, and the production cost is reduced.

Disclosed is a method for recoverying and treating phenol and p-hydroxybenzoate in p-hydroxybenzoate process wastewater, comprising: extracting the p-hydroxybenzoate process wastewater by an extractant, at the same time, recoverying phenol and p-hydroxybenzoate in the wastewater; the extractant is trioctylamine, tri-butyl-phosphate, xylene or n-octanol, or two or more mixtures selected therefrom; the extraction liquid is antiextracted by alkali matter solution, wherein the alkali matter is selected from: potassium hydroxide, sodium hydroxide or ammonia hydroxide; the antiextraction liquid is back to the production process to perform carboxylation. A preferable scheme is two-step refluence extraction; second extraction is performed on the extraction remaining aqueous phase, which is performed with first extraction, by a regeneration extractant after first extraction; the second extraction liquid is back to the first extraction step, and the original wastewater is performed with first extraction. The invention has obvious economical and environmental benefit, the recovery rate of phenol and p-hydroxybenzoate in the wastewater is about 100%, and the COD removing rate is 98.9%.

A process for preparing the 4,4'-bihydroxybiphenyl methaneone includes mixing phenyl p-hydroxybenzoate with catalyst in organic solvent, heating while stirring, reaction, separating the resultant and recrystallizing.

The invention discloses a preparation method and an application of a polyvinyl alcohol nonwoven fabric finishing agent. The finishing agent comprises, by weight, 10-20 parts of polyvinyl alcohol, 3-8parts of hydroxypropyl cellulose (HPC), 5-20 parts of amide modified polyol, 3-15 parts of alkyl glycosides, 5-10 parts of an inorganic filler, 1-5 parts of hydroxyethyl urea, 0.3-1.0 part of a penetrant, 0.3-1.0 part of imidazolidinyl urea, 0.1-0.3 part of p-hydroxybenzoate and 100 parts of water. The raw materials are mixed and heated to obtain the finishing agent. The finishing agent is suitable for the processes of padding finishing, sizing finishing, coating finishing and the like of a polyvinyl alcohol nonwoven fabric; and the polyvinyl alcohol nonwoven fabric is dipped in or coated withthe finishing agent, and then is dried, set and embossed. The nonwoven fabric finished with the finishing agent has improved heat-sealing performance and enhanced mechanical properties, so the hand feeling of the finished nonwoven fabric is also improved.

The invention which relates to a PTFE friction material with high bearing and a low friction coefficient and a manufacturing process thereof belongs to the field of materials with high bearing and low friction coefficients and manufacturing processes thereof. The PTFE friction material which mainly comprises components of PTFE, poly-p-hydroxybenzoate, expanded graphite, a basalt fiber, a silane or titanate coupling agent and the like is manufactured by adopting a mixing technology of ultrasonic vibration-swirling and the manufacturing process of vacuum cold press sintering or vacuum hot pressing molding. The mechanical strength of the PTFE composite material is obviously increased, the friction coefficient of the PTFE composite material is reduced, and the PTFE composite material which has obvious progresses in aspects of tensile strength, ball indentation hardness, wear resistance and the like allows application demands of harsh industrial fields and transport fields of railway freight car bogies, slide slewing bearings and the like to be satisfied. The PTFE friction material of the invention has the advantages of low friction coefficient, and good bearing performance and corrosion resistance, and the manufacturing process of the PTFE friction material has the advantages of simplicity, low cost, and wide practicality.

The invention provides a preparation method of mythyl p-hydroxybenzoate molecular imprinting composite membrane and application thereof. A molecular imprinting composite preparation method and an application of mythyl p hydroxybenzoate in separation of methyl salicylate belong to the fields of material preparation technology and separating technology. polyvinylidene fluoride micro filter membrane is used as a substrate, and mythyl p-hydroxybenzoate (MP) which is impurity in methyl salicylate is used as a template molecule, and methacrylic acid (MAA) is used as a functional monomer, and N, N'-methylene bisacrylamide (MPAA) is used as a cross-linking agent, and azodiisobutyronitrile (AIBN) is used as an initiator; preparation of mythyl p-hydroxybenzoate molecular blotting membrane (MIMMP), static adsorption experiment and selective penetration experiment are used for researching selective identification property of the preparative molecular imprinting membrane. The result shows that, according to the invention, the obtained mythyl p-hydroxybenzoate molecular imprinting composite membrane has super mythyl p-hydroxybenzoate molecule identification performance.

The invention relates to the technical field of enzyme linked immune, and discloses a composition for an enzyme linked immunosorbent assay kit, an anti-nuclear antibody spectrum detection kit and a preparation method thereof. The composition comprises sealing liquid and ELISA diluents; the sealing liquid contains casein, saccharose, PBS, mannitol, Tween20, lycine and sodium azide; the ELISA diluents contain PBS, casein, sodium p-hydroxybenzoate, PEG, lycine and Proclin300. By starting from the sealing liquid and the ELISA diluents of the enzyme linked immunosorbent assay kit, the proper ingredients are selected, so that the enzyme linked immunosorbent assay kit can maintain the detection stability for a long time. Meanwhile, the anti-nuclear antibody spectrum detection kit prepared from the composition has higher stability; the guarantee period is 2 years or more.

The invention discloses a viscoelastic system formed by a functional Gemini surface active agent and belongs to the technical field of a surface active agent. According to a preparation method of a viscoelastic surface active agent solution provided by the invention, organic salt comprises sodium o-hydroxybenzoate, 3-hydroxy-benzoic aci monosodium salt and sodium p-Hydroxybenzoate; Gemini surface active agent with hydroxyl group is taken as the main component and is compounded with few organic salts, and then the viscoelastic surface active agent solution is obtained; the preparation of the viscoelastic surface active agent solution comprises the two processes of compounding and testing viscoelastic property; Gemini cationic surface active agent is prepared into the solution in certain concentration and then is compounded with the salt at different ratio, thus, the viscoelastic surface active agent solution is acquired.

The invention relates to a method for preparing broad spectrum antihumanglobulin cards. Six micro-column gel tubes are arranged on the cards, and the six micro-column gel tubes are gel tubes containing an antibody for resisting IgG+C3d. The method comprises the following processes of preparation of a gel suspension medium, preparation of a gel, selection of the antibody, and preparation and sub-package of the gel. The gel suspension medium comprises the reagents of (5.5-6.5)*10-4g/ml methyl- p-hydroxybenzoate, (1.0-1.5)*10-4g/ml propyl p-hydroxybenzoate, (1.6-1.9)*10-2g/ml glycine, (1.7-1.9)*10-3g/ml sodium chloride, (2.1-2.4)*10-4g/ml monopotassium phosphate, (4.6-4.8)*10-4g/ml disodium hydrogen phosphate and less than or equal to 2 percent of bovine serum albumin. The reagents are dissolved by using distilled water; and the pH value is adjusted into 6.6-6.8. The broad spectrum antihumanglobulin cards prepared by the method have the advantages of high sensitivity, favorable specificity and stable quality.

The invention provides an activated carbon skin lotion which is fresh and cool in smell, strong in detergency, mild to skins and capable of taking a protecting effect. The activated carbon skin lotion comprises 10-16% of fatty acid, 18-28% of anionic surfactant, 0.01-1% of p-hydroxybenzoate, 12-22% of olefin sulfonate, 10-15% of cocamidopropyl betaine, 0.1-0.5% of citric acid, 1-3% of laurhydroxylsulfopropylamide betaine, 1-3% of distearic acid glycol ester, 3-5% of ultramicro activated carbon particles and the balance of deionized water. The main raw materials used in the formula are degradable raw materials and can be biologically degraded; and due to the adoption of the natural environment-friendly raw materials, the activated carbon skin lotion is approved by the European union and national professional institutes and passes the ecological and non-phosphorus detection. The activated carbon skin lotion is favorable in detergency as well as mild and safe in performance; and the blistering effect, the detergency and the skin heat preservation effect are improved. The skin lotion provided by the invention is strong in detergency and capable of taking a good skin protecting effect.

The invention relates to healthcare beverage and a preparation method thereof. The healthcare beverage has functions on assisting the adjustment of blood fat and blood pressure. Salvia miltiorrhiza bge.f.alba and hawthorn are adopted as raw materials, and the beverage comprises the following compositions by weight ratio: 10 parts of salvia miltiorrhiza bge.f.alba, 5 parts of hawthorn, 1 part of crystal sugar, 1 part of honey, 100 parts of purified water and 0.02 percent of p-hydroxybenzoate (g.ml<-1>). The healthcare beverage has simple formula, is convenient to take, has a remarkable effect, and is suitable for the flavor of a particular group of people and satisfies the requirement on adjusting the function of the human body.

The invention provides an aromatic amino acid polymer which is prepared by using aromatic ring-containing amino acids such as L-beta-p-hydroxybenzoate alanine (L-tyrosine, Tyr), 2-hydroxyphenylalanine (2HPA), L-3,4-dihydroxyphenylalanine (dopa, L-DOPA ) and the like as monomers, protecting the amino, performing fusion polycondensation, and then de-protecting under an acidic condition to obtain the finish product. The polymer provided by the invention is quite good in degradability and biocompatibility, and can be used as degradable materials for organization engineering materials, package materials, environmentally friendly cleaning agents, detergents and other fields, and also for adsorption of inorganic particles.

The invention discloses a dyeing wastewater treatment method. The method comprises the steps that a compound wastewater treatment agent is prepared from polyacrylamide, aluminum triphosphate, activated carbon, kieselguhr, ethyl acetate, sodium hypochlorite, urea resin, p-hydroxybenzoate, calcium propionate, chlorhexidine iodine, chitosan, soybean fiber extracts and gallic acid and wastewater are subjected to a stirring reaction, ultrasonic treatment is conducted, column elution is conducted through an ion exchange column, flocculant is added and stirred, flocculation precipitation is conducted, supernatant obtained through flocculation precipitation passes through column adsorption resin, filtration treatment is conducted through a membrane filter, bactericidal treatment is conducted, and treated water meeting emission standard is obtained. According to the dyeing wastewater treatment method, the pollutant removal rate is greatly increased, and chromaticity elimination rate is greatly increased; meanwhile, the process is simple and easy to operate, the operability is high, pollution to environment does not exist, the industry requirement can be met, and the dyeing wastewater treatment method has a good application prospect.

The invention relates to toothpaste with efficacy of hemostasis, detoxification, care and refreshing. The toothpaste comprises components as follows: green silicon carbide, mica, fumed silica, sodium lauryl sulfonate, sodium lauryl sulfate, sodium benzoate, p-hydroxybenzoate, sodium carboxymethylcellulose, sodium alginate, sorbitol, a ginseng extracting solution, a pseudo-ginseng extracting solution, a honeysuckle extracting solution and a green tea extracting solution, wherein the ginseng extracting solution, the pseudo-ginseng extracting solution, the honeysuckle extracting solution and the green tea extracting solution are medicines. According to a preparation process of the toothpaste, firstly, deionized water, an abrasive agent, a surfactant and the medicines are heated and mixed at a high speed, then subjected to homogeneous emulsification and then cooled, an additive is added, the mixture is continuously stirred at the constant temperature, and ageing and packaging are performed. With the adoption of an ultrasonic wave emulsification process and through composite use of four traditional Chinese medicine materials, the situation that Chinese traditional medicine toothpaste has a single function is broken.

The invention discloses a hydrophobic low-eutectic-point solvent based on lidocaine and a preparation method and extraction application of the solvent, and belongs to the technical field of extraction, separation and enrichment of large cationic compounds. The hydrophobic low-eutectic-point solvent based on lidocaine is characterized in that the hydrophobic low-eutectic-point solvent is synthesized from lidocaine serving as a hydrogen bond acceptor and n-octyl p-hydroxybenzoate serving as a hydrogen bond donor in the molar ratio of 1:(0.25-3). The invention particularly discloses the preparation method of the hydrophobic low-eutectic-point solvent based on lidocaine and application of the solvent in extraction of rhodamine B, methyl violet or/and malachite green in an aqueous solution. When used as an extraction agent, the prepared hydrophobic low-eutectic-point solvent has the advantages of being easy to synthesize, stable in performance, low in toxicity, high in extraction efficiency and the like.

The invention discloses a subprostrate sophora compound traditional Chinese medicine toothpaste and a preparation method. The toothpaste comprises a Chinese-medicinal component, amorphous silica, sorbitol, sodium lauryl sarcosinate, sodium hydroxymethyl cellulose, p-hydroxybenzoate, natural xylitol, thickener and adhesive. A Chinese medicinal composition comprise radix Sophorae Tonkinensis, herbaPogostemonis, herba Eupatorii, flos Lonicerae, radix notoginseng powder, Mentholum, flos Magnoliae, fructus Corni, and rhizoma cimicifugae. A Chinese medicinal preparation is prepare by pretreating Chinese medicinal material, mixing, extracting, mixing with adjuvant, and stirring uniformly. The invention not only can treat oral ulcer but also can effectively alleviate rhinitis symptoms, the methodof high temperature stir-frying not only makes the beneficial ingredients of traditional Chinese medicine easier to extract, and the residue extracted by the traditional Chinese medicine is re-extracted by using CO2 supercritical fluid, and the residue is made into the paste of the exploded bead and the toothpaste, so that the oral ulcer treatment effect is greatly enhanced when the concentrationof the drug is effectively increased when the tooth is brushed.

The invention discloses a preparation method of glycerol monostearate p-hydroxybenzoate, which comprises the following steps: (1) proportionally weighing sodium p-hydroxybenzoate and epoxy chloropropane; adopting tetrabutylammonium bromide as a phase transfer catalyst, adding a proper amount of solvent, and reacting in a sealed constant-temperature stirring reactor; and cooling to obtain an intermediate product glycidyl ester p-hydroxybenzoate; (2) measuring the prepared sulfuric acid solution, pouring into a container with the intermediate product obtained by the step (1), putting the container into a water bath kettle for a constant-temperature heating stirring reaction, and flushing a solid phase by use of deionized water to remove residual impurities; and finally transferring the reaction product in the container into watch glass, and drying and cooling to obtain a glycerol monostearate p-hydroxybenzoate product. By adopting the method disclosed by the invention, the obtained product has high purity and yield over 99.9% and 95% respectively; the operation is simple and convenient, the product is pure, and no meta-position byproduct is generated; the method has a great prospect in industrial application and deserves wide popularization and application.

The invention provides a honeysuckle-containing natural refreshing and anti-acne bath lotion which is refreshing in smell, strong in dirt removing power and mild to skins and has a protective effect. The honeysuckle-containing natural refreshing and anti-acne bath lotion is prepared from 0.1-1% of p-hydroxybenzoate, 18-22% of olefin sulfonate, 11-15% of cocofatty acylamido propyl betaines, 0.2-0.5% of honeysuckle essential oil, 1.5-3% of sodium oleoyl amino fatty acid, 1.5-3% of ethylene glycol monostearate, 0.3-0.5% of bath salt and the balance of deionized water. The main raw materials used in the formula are degradable raw materials which are biodegradable; due to the adoption of the natural and environment-friendly raw materials, the honeysuckle-containing natural refreshing and anti-acne bath lotion conforms to the authentication of the European union and the national professional institute; and the honeysuckle-containing natural refreshing and anti-acne bath lotion passes the ecological and non-phosphorous detection. The honeysuckle-containing natural refreshing and anti-acne bath lotion is favorable in dirt-removing powder, mild and safe in performance and capable of improving the blistering effect, the dirt-removing powder and the heat insulation effect for the skins. The bath lotion provided by the invention is strong in dirt-removing powder, strong in honeysuckle aromatic flavor and capable of taking favorable whitening and heat insulating effects for the skins and also has an anti-acne effect.