74 results about "Butyl-p-hydroxybenzoate" patented technology

The invention discloses an artificial feed for prodenia litura fabricius and an indoor artificial breeding method of the prodenia litura fabricius. The artificial feed is prepared from 80-200g of cabbage leaf powder, 20-40g of bean pulp powder, 5-15g of beer yeast power, 1-3g of butyl p-hydroxybenzoate, 0.5-2g of potassium sorbate, 5-15g of agar, 0.1-0.2g of inositol, 0.1-0.2g of cholesterol, 1-4g of multivitamin powder and 500mL of water. The semi-artificial feed for the prodenia litura fabricius is prepared from the low-cost cabbage leaf powder, and can meet the nutritional requirement of the prodenia litura fabricius. After the prodenia litura fabricius is fed with the formula provided by the invention, larvae can normally grow and develop and have higher survival rate, and pupae are heavier.

The invention relates to a natural rubber latex anticoagulating and antistaling agent and a preservation method thereof. The natural rubber latex anticoagulating and antistaling agent comprises sodium bisulfite, butyl p-hydroxybenzoate, sodium carbonate, sodium methasilicate pentahydrat, citric acid, and sodium benzoate. After compounded according to a certain weight ratio, each raw material is added into 1000-1500 parts of natural rubber latex all for one time, and after uniform stirring and dissolution, the mixture only needs to be stored in a prepared container. The anticoagulating and antistaling agent of the invention is characterized by no ammonia, no irritating effect, health and nontoxicity as well as no toxic and side-effect on human body. And on the other hand, compared with ammonia antistaling agents, the antistaling agent in the invention reduces acid consumption for subsequent processing of rubber. The anticoagulating and antistaling agent provided in the invention has the advantages of wide raw material sources, low price, simple manufacturing process, convenient usage, good effect, long preservation time, good quality of rubber latex after application of the agent, and high dry rubber content.

The invention discloses a compound preservative and an application thereof and aims to provide one compound preservative which is simple in preparation method and is good in antiseptic and antibacterial properties. The preservative disclosed by the invention is used as an additive of a skin care product. The technical key points are as follows: the preservative is composed of a solute and phenoxyethanol in a mass ratio of 1 to 1, wherein the solute is composed of the following components in mass percentage: 1%-40% of methyl p-hydroxybenzoate, 1%-40% of ethyl p-hydroxybenzoate, 1%-20% of propyl p-hydroxybenzoate and 1%-15% of butyl p-hydroxybenzoate; the sum of all the components is 100. The invention provides the application of the compound preservative as the additive of the skin care product, belonging to the technical field of household chemicals.

The invention discloses a discoloring solid rubber stick and a preparation method thereof. The discoloring solid rubber stick is prepared from the following raw materials in parts by weight: 55.0-85.0 parts of water, 15.0-25.0 parts of polyvinylpyrrolidone, 5.0-10.0 parts of styrene-acrylic emulsion, 10.0-15.0 parts of acrylic emulsion, 5.0-10.0 parts of dextrin, 5.0-15.0 parts of propylene glycol or glycerin, 5.0-15.0 parts of stearic acid, 0.5-3.0 parts of sodium hydroxide, 1.0-5.0 parts of light changing pigment, 10.0-15.0 parts of calcium carbonate or kaolinite and 0.2-3.0 parts of butyl p-hydroxybenzoate. The discoloring solid rubber stick disclosed by the invention has the characteristics of high bonding strength, high bonding speed, good temperature resistance, long storage life, beautiful color, unique style and the like, can be cleaned with water and stored for long time, and is safe and environment-friendly, easy to use and wide in range of application.

The invention relates to a ceramic adhesive and a preparation method thereof. The ceramic adhesive is prepared from raw materials in parts by weight as follows: 20-35 parts of quartz sand, 10-13 parts of synthetic resin, 10-15 parts of butanediol, 5-9 parts of amino resin, 3-6 parts of phenolic resin, 6-8 parts of a polyvinyl acetate emulsion, 8-11 parts of butyl p-hydroxybenzoate, 5-10 parts of high-carbon alcohol aliphatic ester composition and 3-5 parts of titanium dioxide. The materials are easy to obtain, the preparation method is simple, the ceramic adhesive is low in cost, small in density, light in mass, high in adhesion, high in bonding force, good in permeability, waterproof, moisture-proof and high-temperature resistant, has certain fireproof effect and insulativity and good defoaming or non-foaming effect, realizes rapid drying, can effectively bond hard materials such as ceramic, metal and the like and is wide in application range, safe, non-poisonous and good in environment-friendly effect.

The invention discloses an antiallergic sun cream and a preparation method of the antiallergic sun cream. The sun cream is prepared from, by mass, 4 parts to 12 parts of sweet tea extract, 2 parts to 7 parts of glyceryl monostearate, 33 parts to 40 parts of deionized water, 1 part to 5 parts of butyl p-hydroxybenzoate, 10 parts to 21 parts of butanediol, 1 part to 5 parts of octyl methoxycinnamate, 6 parts to 14 parts of xanthan gum, 5 parts to 12 parts of glycerol, 9 parts to 18 parts of isopropyl palmitate and 10 parts to 20 parts of hyaluronic acid. The preparation method includes the steps that according to the mass fraction, the sweet tea extract, the butanediol, the deionized water, the glycerol and the hyaluronic acid are evenly stirred under the heating condition; after the mixture is cooled, the glyceryl monostearate, the butyl p-hydroxybenzoate, the octyl methoxycinnamate, the xanthan gum and the isopropyl palmitate are added to the mixture to be stirred to be even, and the sun cream is obtained. The antiallergic sun cream has the advantages of decomposing melanin, being capable of performing suncare on the skin, resisting allergy and the like.

The invention discloses a method for treating urban sewage, which comprises corn starch-acrylamide graft copolymer, carboxymethyl chitosan, soybean protein extract, ferric chloride, ethoxyquinoline, and benzyl peroxide Acyl, sodium cyclamate, polylactic acid, butyl p-hydroxybenzoate, hydroxyethylidene diphosphonic acid, licorice extract, allantoin as the compound sewage treatment agent and sewage stirring reaction, after ultrasonic treatment, The ion exchange column is eluted through the column, the flocculant is stirred and flocculated and precipitated, the flocculation supernatant is passed through the column adsorption resin, membrane filter is filtered, sterilized, and the treated water of the discharge standard is obtained. The method has high sewage treatment efficiency, and the discharged treated water can reach the national standard. At the same time, the process is simple and easy, the operability is strong, and it has no pollution to the environment, which can meet the requirements of the industry and has a good application prospect.

The invention discloses a preparation method of mould-proof bamboo plywood with high bonding strength. The preparation method comprises steps as follows: bamboo curtains are ultrasonically treated and then dried; the dried bamboo curtains are subjected to plasma treatment; the bamboo curtains subjected to plasma treatment are dipped in glue adopting a modified epoxide resin adhesive; after glue dipping, the bamboo curtains are dehumidified and then assembled to form a blank; hot-pressing solidification is performed. The modified epoxide resin adhesive comprises components in parts by weight as follows: 50-60 parts of epoxy resin, 30-40 parts of phenolic resin, 15-20 parts of polyurethane resin, 2-5 parts of silicon resin methyl branched silicon oil, 1-3 parts of dipentaerythritol, 3-6 parts of polyborosiloxane, 15-18 parts of sepiolite, 5-8 parts of nano magnesia, 7-10 parts of corn starch, 0.4-1 part of an anti-ageing agent and 2-3 parts of butyl p-hydroxybenzoate. By means of the preparation method of the mould-proof bamboo plywood with the high bonding strength, the bonding strength of the obtained bamboo plywood is high, the water absorption expansion rate is low, and the corrosion resistance is excellent.

The invention discloses heat-resisting high-toughness polystyrene resin foaming plastic. The heat-resisting high-toughness polystyrene resin foaming plastic is prepared from, by weight, 40-55 parts of polystyrene resin, 2-3.5 parts of potassium titanate fibers, 11-16 parts of coconut fiber, 2-6 parts of polytetrafluoroethylene, 1-1.5 parts of 3,5-tert-butyl-4-hydroxy phenyl, 15-20 parts of talcum powder, 6-11 parts of silicon carbide powder, 4-13 parts of kaolin, 1.2-1.8 parts of bis(2-ethylhexyl) phthalate, 1.1-1.6 parts of zinc stearate, 1-1.5 parts of butyl p-hydroxybenzoate and 2-5 parts of foaming agents. The heat-resisting high-toughness polystyrene resin foaming plastic has the good heat-insulating property and the good strength and toughness, and the impact-resisting property of the plastic is improved.

The invention relates to a method for removing butyl p-hydroxybenzoate (BHB) by directly activating potassium peroxymonosulfate (PMS) and sodium persulfate (PDS) with layered MoS2. The method includespreparing a BHB target solution having a pH of 3-10 and a concentration of 5 mg / L; changing experiment conditions, adding a certain amount of commercial MoS2 and PMS / PDS to the BHB target solution respectively, and reacting the mixture under stirring. It is found for the first time that: the layered MoS2 can directly activate persulfate under a condition of no external energy and generate activefree radicals (SO<4><->., .OH and O<2><->.) and non-free radicals (1O2) to achieve synergistic oxidation to remove the BHB. The method is simple in process, easy to operate and low in equipment requirement, and the layered MoS2 is cheap and easily available, and has a wide market application potential in the field of treating newly-developing pollutants in water environment.

The invention relates to the fields of electrochemical sensors and electro-analytical chemistry and particularly discloses an electrochemical sensor for performing rapid trace detection on a preservative, namely butyl p-hydroxybenzoate, and a preparation method of the electrochemical sensor. The electrochemical sensor for performing the rapid trace detection on the preservative, namely butyl p-hydroxybenzoate, is high in measurement sensitivity, good in selectivity, simple to operate and low in cost, and a result is credible. The electrochemical sensor comprises a working electrode, a reference electrode and a counter electrode, wherein the working electrode adopts a glassy carbon electrode dropwise coated with a hollow CeO2 microsphere modified film with high electroactivity. The prepared electrochemical sensor is successfully applied to detection of butyl p-hydroxybenzoate in spiced dried bean curds, a variety of cellulose compound capsules, jam and cosmetics.

The invention relates to a plant-based preservative which is prepared from the following raw materials in parts by weight: 3-5 parts of polydimethylsiloxane, 4-7 parts of a compound emulsifier, 1-3 parts of butyl p-hydroxybenzoate, 0.5-2 parts of sorbitan fatty acid ester, 10-15 parts of garlic, 6-11 parts of illicium verum, 4-8 parts of liquorice, 0.3-0.5 part of carboxymethyl chitosan, 0.2-0.4 part of oxalic acid, 9-16 parts of a clove powder extraction liquid, 11-16 parts of masson pine leaves, 4-8 parts of tea tree oil and 0.1-1 part of myristic acid. The plant-based preservative provided by the invention has the benefits that the plant-based preservative provided by the invention can be used for prolonging the preservation time of food well and maintaining freshness of taste, does not affect the quality of the food and is safe and non-toxic.

A hydroxypropyl-beta-cyclodextrin supermolecule clathrate (inclusion) compound of butyl p-hydroxybenzoate, which is a mildew-resistant and anti-bacterial medicine, and a preparing method and a using method thereof are disclosed. The clathrate (inclusion) compound comprises the butyl p-hydroxybenzoate and hydroxypropyl-beta-cyclodextrin in a weight ratio not less than 1:7.5. The butyl p-hydroxybenzoate obtains good water solubility and the water solubility of the butyl p-hydroxybenzoate turns from insolubility to easy solubility, and therefore the problem that an aqueous butyl p-hydroxybenzoate solution is not liable to apply or operate is overcome, the butyl p-hydroxybenzoate can be applied in a circumstance of high concentrations, and the butyl p-hydroxybenzoate obtains good usability and can be directly added into an aqueous solution or can be directly dissolved with water together with other components. By protection of the hydroxypropyl-beta-cyclodextrin, possible chemical compatibility and degradation invalidation problems with other components in the solution are overcome, so that good stability is achieved. The supermolecule clathrate (inclusion) compound of the hydroxypropyl-beta-cyclodextrin and the butyl p-hydroxybenzoate maintains mildew-resistant and anti-bacterial functions and maintains the range unchanged.

The invention provides a detection method for measuring eight preservatives in reconstituted tobaccos simultaneously. The method comprises the steps that a methanol-formic acid-water solution is used as extraction liquid, a reconstituted tobacco sample is subjected to ultrasonic extraction, the extracting solution is filtered by an organic filter film, a high performance liquid chromatography-tandem mass spectrometry combined method is adopted for measuring eight preservatives comprising dehydroacetic acid, sorbic acid, benzoic acid, salicylic acid, methyl 4-hydroxybenzoate, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate and butyl p-hydroxybenzoate. An isotope dilution internal standard method is adopted for quantification to avoid quantitative separation and purification difficulty of a complex mixture system; due to the fact that the methanol-formic acid-water solution is used as the extraction liquid, extraction efficiency is ensured, the amount of organic impurities in the sample entering a chromatographic column can be reduced, and the chromatographic column is effectively protected. The method is high in analysis speed, good in repeatability and recovery rate and applicable to analysis of large-batch products in industry.

The invention discloses application of a natural antibacterial peptide As-CATH4 in food preservation and fresh-keeping. The natural antibacterial peptide As-CATH4 in the present invention has a broad-spectrum and high-efficiency antibacterial effect on common food spoilage bacteria, has a rapid sterilization effect, and has a good synergistic effect with a traditional preservative butyl p-hydroxybenzoate. The combination of As-CATH4 and butyl p-hydroxybenzoate significantly inhibits the growth of spoilage bacteria, increases sensory evaluation score, and prolongs food storage time. In the storage experiment of salmon meat, cooked meat sauce and freshly squeezed fruit juice, As-CATH4 significantly inhibits the growth of spoilage bacteria, increases sensory evaluation score, and prolongs food storage time. In the storage experiment of orange juice, the combination of As-CATH4 and butyl p-hydroxybenzoate significantly inhibits the growth of spoilage bacteria, prolongs food storage time, and shows a good synergistic effect. In addition, As-CATH4 can be completely degraded by trypsin and has no toxic side effects on human body. As a new type of food preservative, As-CATH4 has wide application prospects.

The invention discloses a heavyweight corrugated pipe for concrete. The heavyweight corrugated pipe comprises the following materials in parts by weight: 1-2 parts of calcium acetylacetonate, 0.7-1 part of hexamethylphosphoramide, 1-2 parts of bisimidazolidinyl urea, 10-12 parts of vermiculite powder, 1-2 parts of polyethylene glycol 400, 1-2 parts of white mineral oil, 2-3 parts of heavy calcium carbonate, 1-2 parts of ethylene diamine tetra(methylene phosphonic acid) sodium, 2-3 parts of charcoal powder, 1-2 parts of butyl p-hydroxybenzoate, 0.2-0.4 part of ammonium ethoxylated alkylphenol sulfate, 90-100 parts of polypropylene and 4-7 parts of composite additives. By virtue of the heavy corrugated pipe disclosed by the invention, the defect that the current polyethylene corrugated pipe is easily floated in the concrete construction due to the light weight is improved and the heavy corrugated pipe has the characteristics of good tensile strength and ring stiffness, good tolerance and strong impact resistance.

The invention relates to body lotion for deeply moisturizing skin, each part of which comprises the following components: 2.0-2.2% of stearic acid, 0.6-0.8% of hexadecanol, 0.4-0.6% of stearyl alcohol, 0.9-1.1% of Tween-60, 1.2-1.4% of Span-60, 2.0-2.4% of squalane, 8-10% of isopropyl palmitate, 0.10-0.12% of butyl-p-hydroxybenzoate, 0.20-0.24% of methyl-p-hydroxybenzoate, 0.10-0.11% of polyacrylic acid, 5-6% of propanediol, 2.0-2.5% of glycerin, 1.0-1.2% of triethanolamine, 0.1% of essence and the balance deionized water. The prepared lotion is uniformly applied to the skin by way of gentle circling and the skin is patted until the lotion is fully absorbed. The lotion can effectively replenish the water needed by the skin, replenish water deeply and simultaneously supplement the oily compositions needed for moisturizing the body. Matching of water and oil can ensure the skin to have optimal states of elasticity and moisturizing.

The invention discloses preservative added into foods. The preservative comprises, by volume, 23-28 ml of sodium benzoate, 2-6 ml of butyl-p-hydroxybenzoate, 30-50 ml of propylene glycol, 2-8 ml of fatty acid monoglyceride, 4-10 ml of fructus forsythiae leaf extractives, 0.2-0.8 ml of dehydrated sorbitan esters of fatty acid and 50-60 ml of water. By means of the mode, the preservative added into the foods is low in cost, has the efficient and broad-spectrum antibacterial effect, has the inhibition effect on Escherichia coli, Aspergillus flavus, penicillium chrysogenum, staphylococcus aureus, and can be used for preservation of the foods such as aquatic products, livestock meat, soft drink and noodles.

The invention discloses a preparation method of butyl p-hydroxybenzoate, comprising the following steps of: firstly cleaning a 4A zeolite by distilled water, and controlling activation temperature; activating for a period of time, cooling, and then weighing a certain amount of the 4A zeolite; soaking in a toluenesulfonic acid solution; removing a water solution, and then drying to obtain a needed catalyst; adding p-hydroxybenzoic acid, butanol, toluene, benzyltriethylammonium chloride and the catalyst to a flask together, reacting in a reflux state, and also separating water; after the reaction is finished, filtering to remove the catalyst, and steaming unreacted and toluene; adding residues to cold water for intensely stirring so as to separate out white crystals; then neutralizing unreacted acid by a sodium carbonate solution till the sodium carbonate solution becomes alkalescent; filtering, and drying to obtain a product of the butyl p-hydroxybenzoate. The invention has low cost, easy storage, no side reaction in the production process, and corrosive damage on equipment.

The invention discloses an application of butyl p-hydroxybenzoate in preparing candida albicans resistant drugs. According to the application, the inventor takes candida albicans as the test object toscreen effective and low-toxicity chemical compound not easy to generate drug resistance, and finds that butyl p-hydroxybenzoate have good suppression effect to adhesion and pathogenicity of candidaalbicans. Besides, the chemical compound has low toxicity which cannot affect growth of human cells. Meanwhile, no influence is caused to normal growth of candida albicans, that is to say, the chemical compound suppresses adhesion, hypha formation, biofilm formation and pathogenicity of candida albicans rather than kills candida albicans mainly, and accordingly is not easy to generate drug resistance. The development of the novel antifungal drug, especially the development of the candida albicans resistant drugs has good application prospect.

The invention discloses a butterfat flavor reinforcing agent and a preparation method thereof, which relate to the technical field of edible essence, and solve the technical problem that the existingessence has obvious sour flavour and leads to poor cream flavor. The butterfat flavor reinforcing agent comprises the following components by weight percentage: 5-10% of anhydrous butter; 0.5-5% of cream essence; 10-50% of DATEM; 1-10% of octenyl succinic anhydride modified starch; 0.1-2% of trisodium phosphate; and 0.001-0.01% of butyl p-hydroxybenzoate sodium; water is supplied to 100%; whereinthe DATEM is Liquid. The preparation method adopts the liquid DATEM to enhance the fat taste of dairy products, and the effect can be enhanced by adding the anhydrous butter, the stable liquid butterfat flavor reinforcing agent is prepared, is easy to use and uses trisodium phosphate to adjust the sour degree to enhance the taste, and the product is more suitable for the dairy products such as icecream, dairy beverage, yogurt and cheese.

The invention discloses a quantitative method for testing p-hydroxybenzoate alkyl ester compounds in sediment. The p-hydroxybenzoate alkyl ester compounds comprise methyl parahydroxybenzoat MeP, ethyl p-hydroxybenzoate EtP, propyl p-hydroxybenzoate PrP, butyl p-hydroxybenzoate BuP, n-heptyl 4-hydroxybenzoate HeP and p-hydroxybenzoic acid P-HB, a monostandard of the p-hydroxybenzoate alkyl ester compounds is taken as a quantitative substance, 13C-marked methyl parahydroxybenzoat is taken as an internal standard substance, and an internal standard method is adopted for quantification. The quantitative method disclosed by the invention is relatively simple in whole steps, the testing time of a sample to be tested can be shortened to be 10 minutes, and reference data can be provided for the content of the p-hydroxybenzoate alkyl ester compounds in water body sediment.

The invention relates to an active rutin whitening cream which comprises polyoxyethylene mono-stearate, glycol mono-stearate, stearic acid, docosyl alcohol, squalane, hexadecyl, cetyl isooctanoate, butyl p-hydroxybenzoate, methyl p-hydroxybenzoate, 1,3-butanediol, enoxolone disylvite, rutin, essence and purified water. The whitening cream is spread on the face after the face is cleaned. The invention can resist skin aging and relieve wrinkles and facial stains.

The invention discloses an amiotide eye drop containing a composite bacteriostatic agent. The composite bacteriostatic agent is phydroxybenzoate ester and phenethyl alcohol, wherein the concentration of the phydroxybenzoate ester is 0.1 to 0.4g / L; the concentration of the phenethyl alcohol is 4 to 5ml / L; and the phydroxybenzoate ester is one of or a mixture of more than two of methyl parahydroxybenzoate, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate and butyl p-hydroxybenzoate. Through the combined collaborative bacteriostatic action of the phydroxybenzoate ester and the phenethyl alcohol, the amiotide eye drop can improve the bacteriostatic activity, enhances the microbial contamination resistance, expands the antibacterial spectrum and has relatively high inhabitation effect on gram-negative bacterium, gram-positive bacterium and fungi. The potency assay of the bacteriostatic agent proves that the amiotide eye drop completely accords with the rule of a bacteriostatic agent efficacy test method guiding principle, which is the appendix of 'China Pharmacopeia 2000 (vol. II)', and the safety and the efficiency of the amiotide eye drop can satisfy clinical needs.

The invention discloses a building external wall paint which is prepared from the following raw materials in part by weight: 10 to 15 parts of titanium dioxide, 20 to 25 parts of white latex, 5.8 to 8.6 parts of carboxy methyl cellulose, 2.5 to 6.4 parts of butyl p-hydroxybenzoate, 2.4 to 6.5 parts of 1,3-dibromo isopropanol, 2.4 to 6.2 parts of cinnamaldehyde, 1.4 to 3.7 parts of 2-phenethyl compound phenol polyoxyethylene ether, 3.5 to 7 parts of polyurethane film forming agent and 2.5 to 4.2 parts of white carbon black. Compared with an existing product, the building external wall paint has the advantages that the building external wall paint has good mould-proof and antibacterial effects, a long service life and low production cost, and is soft in smell; the building external wall paint uses the white latex and the carboxy methyl cellulose as base stocks, an excellent adhesive force is provided for various internal wall base planes and water absorbing capacity of a coated base layer is reduced; the building external wall paint is helpful for color uniformity of a finish paint; consumption of the finish paint is saved; glossiness is improved; integral coating cost is reduced; a wall painting effect is better.

The present invention relates to the technical field of rubber chemicals, and particularly relates to a natural rubber latex preservative. The rubber latex preservative comprises the following raw materials in parts by weight: 0.2-0.5 part of sodium metabisulfite, 0.1-0.5 part of butyl p-hydroxybenzoate, 4-10 parts of sodium bicarbonate, 1-5 parts of sodium benzoate and 1-3 parts of citric acid. Object of the present invention is to provide a safe, environmentally-friendly, low-price, easy-to-use natural rubber latex preservative.

The invention discloses a vitamin E nourishing and skin-care lotion. The prescription of the skin-care lotion consists of the following raw materials in parts by weight: 5 parts of vitamin E, 1 part of hexadecanol, 1 part of octadecanol, 0.7 part of polyoxyethylene (20) ether, 0.9 part of stearic acid, 0.3 part of dimethyl siloxane, 0.2 part of monoglyceride, 0.1 part of propyl p-hydroxybenzoate, 0.05 part of butyl p-hydroxybenzoate, 4 parts of propylene glycol, 13 parts of polyacrylic resin, 0.2 part of methyl p-hydroxybenzoate, 0.2 part of imidazolidinyl urea, 0.05 part of disodium EDTA, 0.4 part of triethanolamine, a proper amount of essence and de-ionized water to 100 parts. The skin-care lotion provided by the invention, on the basis of a synergistic effect caused from the dosages and physicochemical properties of the various raw materials, can achieve effects of scavenging free radicals, lightening spots and whitening. The skin-care lotion provided by the invention, which is close to human skin in PH value, is non-irritant to the skin; and a user, applied with the trace-element skin cream, can feel obviously comfortable and soft, without the feeling of being greasy, and the skin-care lotion has obvious effects of nourishing and whitening, protecting skin and keeping beauty.

The invention relates to the technical field of textile fabrics, and particularly discloses a mildew-proof and antibacterial silicone rubber fabric and a production process thereof. The high-temperature-resistant silicone rubber material is prepared from the following raw materials in parts by weight: 60 to 70 parts of methyl vinyl silicone rubber, 4 to 6 parts of silver-loaded nano titanium dioxide, 10 to 20 parts of bamboo charcoal powder, 4 to 8 parts of copper pyrithione, 0.2 to 0.4 part of sodium hexametaphosphate, 0.6 to 1 part of butyl p-hydroxybenzoate and 3 to 5 parts of vulcanizing agent. The highest inhibition rate of escherichia coli and staphylococcus aureus of the silicone rubber fabric is 99.9%, and the silicone rubber fabric has a high antibacterial effect; meanwhile, the optimal mildew-proof grade of the silicone rubber fabric is 0 grade, mildew spots do not appear on the surface, and the silicone rubber fabric has good mildew-proof performance.

The present invention discloses preparation process of butyl p-hydroxybenzoate as solid super acidic catalyst. The preparation process includes the following steps: adding attapulgite clay into 20.0-45.0 wt% concentration Ti(SO4)2 solution, with the amount of attapulgite clay being 8-16 wt% of Ti(SO4)2, and soaking to obtain suspension; regulating the pH value of the suspension to 6-10 with NH3.H2O, ageing for 6-24 hr, suction filtering, washing, drying at 378-383 K for 12-24 hr, grinding to below 200 mesh to obtain white powder; soaking the white powder in 0.1-1.51 mol / l concentration H2SO4 solution for 5-25 min, filtering, washing, drying at 378-393 K for 1 hr, grinding to below 200 mesh to obtain white powder; and roasting in air atmosphere at 623-873 K to activate for 3 hr to obtain the solid super acidic catalyst. The solid super acidic catalyst has high activity, high selectivity, long service life, low production cost and other advantages.

The invention relates to the technical field of textile dyeing and finishing, and particularly relates to compound modified starch printing paste for polyester and a preparation method of the compoundmodified starch printing paste. The compound modified starch printing paste for polyester is mainly prepared from the following raw materials in parts by mass: 30-50 parts of modified starch, 10-20 parts of hydroxyethyl tamarind gum, 10-20 parts of konjac gum, 5-15 parts of anhydrous sodium sulfate, 5-15 parts of sodium hexametaphosphate and 1-3 parts of sodium butyl p-hydroxybenzoate; the modified starch is prepared from phosphate starch and acetate starch in a ratio of (4 to 7) to (2 to 3). According to the compound modified starch printing paste for polyester and the preparation method ofthe compound modified starch printing paste provided by the invention, the compatibility is reasonable, and the preparation method is simple; the dry rubbing fastness of the obtained compound modifiedstarch printing paste for polyester is at level 5 while the wet rubbing fastness reaches level 3, the paste separation rate is up to 93.08%, and the apparent color yield is 28.04, and the handfeel and water holding property are relatively good; with all performances better than existing sodium alginate paste, the compound modified starch printing paste for polyester can replace sodium alginate completely in the technical field of textile dyeing and finishing.