26results about How to "Small smell" patented technology

The invention relates to the field of photocuring adhesives, and mainly relates to a UV adhesive for wig connection and a preparation method thereof. The UV adhesive for wig connection is prepared from the following components in parts by weight: 30 to 50 parts of urethane acrylate, 45 to 70 parts of first reactive diluent, 2 to 4 parts of photoinitiator and 2 to 4 parts of fumed silica, the first active diluent is prepared from two or a mixture of more than two of acryloyl morphine, 2-acrylic acid-2-(2-phenoxy ethyoxyl) ethyl ester, dicyclopentadiene acrylate and ethylene glycol dicyclopentenyl ether methacrylate. The preparation method comprises the following steps: mixing the components, heating in a water bath, and stirring to obtain the UV adhesive for wig connection. The UV adhesive for wig connection provided by the invention is low in odor, good in durability and good in matte effect.

This invention belongs to the field of cosmetic raw material preparation technology, specifically relating to a method for preparing a low-odor Xinjiang Lithospermum extract, its product, and its application. The method includes: raw material pretreatment: drying and pulverizing Xinjiang Lithospermum raw material to obtain pretreated material; first-stage extraction: loading the pretreated material into a supercritical fluid extraction device, adding a composite entrainer for extraction, and collecting the first fraction in a first separator; second-stage extraction: collecting a second fraction rich in naphthoquinone components in a second separator; and post-treatment: concentrating the second fraction and removing the alcohol solvent to obtain the low-odor Xinjiang Lithospermum extract. This invention can separate and discard most of the odor-causing volatile components in the raw material under mild conditions in the first stage, and then efficiently extract the core active substances of naphthoquinone in the second stage, achieving a significant reduction in the odor of the extract and a significant improvement in its sensory quality.

The utility model discloses a novel intelligent foaming and cleaning assembly type public lavatory belongs to assembly type public lavatory technical field, this novel intelligent foaming and cleaning assembly type public lavatory, including base mechanism and locking mechanism, the top of base mechanism is provided with front wall mechanism, the rear end of front wall mechanism is provided with two side assembly boards, the top of side assembly board is provided with roof board mechanism, the rear end of side assembly board is provided with rear wall mechanism. The utility model discloses through the setting of foaming closet, energy storage box, solar panel and ceiling lamp, realizes solar energy charging, can also reduce the smell of public lavatory, is favorable to improving the energy -conserving nature and environmental protection of the device, the utility model discloses through the setting of front wall mechanism and locking mechanism, when personnel washes and rinses and leaves the device, can open public lavatory door through the foot -operated action to reduce the contact of hand and the device, prevents cross infection, is favorable to improving the health of the device.

The invention provides a biodegradable polyester composition and application thereof, the biodegradable polyester composition comprises, by weight, 60-86 parts of biodegradable polyester, 1-8 parts of polylactic acid, 6-32 parts of starch and 0.2-5 parts of an adsorbent; the ratio of the melt index of the polylactic acid boiled in water at 80 DEG C for 2 hours to the initial melt index is 1.1-5. The film bag material prepared from the biodegradable polyester composition has the advantages of low odor and excellent film surface fineness.

The application provides a preparation method of 1,2-pentanediol and belongs to the technical field of fine chemical synthesis. The 1,2-pentanediol is prepared by the following steps: furaldehyde, a solvent and a catalyst are loaded into a reaction kettle, nitrogen in the kettle is replaced by nitrogen gas, hydrogen in the kettle is replaced by hydrogen gas after the nitrogen replacement, and then the reaction is carried out by heating and hydrogen charging to obtain the 1,2-pentanediol; the catalyst uses hydrotalcite as a carrier, active components Ni and Cu are dispersed in the carrier, the loading amount of the active components is 5wt%-20wt%, the mass ratio of the Ni and the Cu is 1:2-3:1, and the specific surface area of the hydrotalcite carrier is 10-20m 2 / g. The method provided by the application is simple in process, high in yield, small in smell of prepared 1,2-pentanediol and suitable for daily chemical products.

The invention provides artificial leather and a preparation method thereof. The artificial leather comprises a cloth layer, a first base material layer and a first surface layer which are stacked in sequence, the material of the first base material layer comprises nylon and / or modified nylon. According to the invention, the nylon middle layer is arranged between the cloth layer and the surface layer of the artificial leather, so that the low-temperature folding resistance and wear resistance of the artificial leather can be improved, the use of auxiliaries can be reduced, and the odor of a finished product can be reduced; in addition, nylon and / or modified nylon have certain polarity and have good compatibility with the surface layer, and the interlayer stripping force of the artificial leather can be improved.

The present application relates to a kind of acrylic polymer emulsion, its raw material composition and its preparation method and application, belong to building coating technical field.It includes the following weight parts of raw materials: pre-emulsion I 15-25 parts, pre-emulsion II 45-55 parts, emulsifier solution 10-20 parts, initiator solution 1-10 parts, post-processing solution I 1-5 parts, post-processing solution II 1-5 parts, adipohydrazide 0.5-2 parts, triethanolamine 1-5 parts.The acrylic polymer emulsion prepared in the present application has strong cohesion, elongation and elasticity, the soft porcelain prepared using the emulsion is not easy to break or remain when demolding after curing, thereby effectively solving the adhesion problem of soft porcelain on silica gel mold, and the acrylic polymer emulsion prepared in the present application itself has low odor, significantly reduces the peculiar smell of soft porcelain finished product, improves environmental protection and use experience.

The invention provides black paste for labor protection gloves and a preparation method of the black paste, and belongs to the technical field of preparation of labor protection appliances, an anionic surfactant in the black paste has good permeability, and can accelerate the exchange speed of a solvent and water in the black paste and improve the brightness; the added dispersing agent can avoid flocculation of carbon black particles, stability of the color paste is improved, in addition, the amine value of the color paste is low, and the viscosity cannot be affected under the high-temperature condition; the adopted hydroxyl acrylic acid modified polyurethane contains COOH, OH, benzene ring and other pigment affinity groups, has the advantage of high gloss, and also has certain dispersion and viscosity reduction functions. The black paste provided by the invention is wide in raw material source, low in price, simple in production process and low in cost, and the prepared black paste has the characteristics of high blackness, high brightness, high solid content, low viscosity, low odor and good wear resistance, and has good application prospects and popularization values.

This invention provides a light-curing, low-odor epoxy resin composition for repair and its preparation method, comprising: mixing glycidyl epoxy resin, alicyclic epoxy resin, epoxy diluent, additives, olefin monomers, free radical photoinitiator, and photocationic initiator in proportion to mass under a light-protected environment to obtain the light-curing, low-odor epoxy resin composition for repair. The epoxy resin composition for trenchless UV-cured pipeline repair technology prepared by the method of this invention exhibits low odor and excellent resistance to acid and alkali corrosion.

The application relates to the technical field of rubber, and discloses a rubber processing modified masterbatch, vulcanized rubber, a preparation method of the rubber processing modified masterbatch and the vulcanized rubber and application of the rubber processing modified masterbatch in a tire tread, wherein the rubber processing modified masterbatch is composed of a modifier, a base material and white oil; the content of the modifier is 76-81 parts by weight; the content of the base material is 14-17 parts by weight; and the content of the white oil is 3-7 parts by weight; and the base material comprises a polyolefin elastomer, an ethylene-propylene-diene rubber and an ethylene-vinyl acetate copolymer. The rubber processing modified masterbatch can improve the compatibility and dispersibility of maleic acid monomers in a high-viscosity rubber base, so that the strength of the tire tread rubber can be better improved, the heat generation of the tire tread rubber can be reduced, and the wet skid resistance can be improved.

This invention discloses a metal surface rust inhibitor, comprising the following raw materials by mass percentage: deionized water: 80%–90%; organic polyol amine corrosion inhibitor: 6%–16%; heterocyclic high-efficiency corrosion inhibitor: 0.5%–3%; water-based film-forming agent: 2%–7%; nonionic low-foaming surfactant: 0.2%–1.5%; pH adjuster: 0.3%–1.5%; defoamer: 0.05%–0.3%. This invention is completely non-toxic and environmentally friendly, free of nitrites, chromium, nickel, phosphorus, and heavy metals, meeting environmental emission standards. It has a low odor, is easy to clean, non-greasy, and does not affect coating, phosphating, or assembly. It provides long-lasting rust prevention, forms a dense film with strong adhesion, significantly extends the rust prevention period, and is suitable for multiple metals, exhibiting no corrosion to carbon steel, cast iron, galvanized steel, and stainless steel. It has excellent rust prevention performance, is easy to apply, and can be applied by immersion, spraying, or brushing at room temperature, with fast drying.

The invention discloses a low-whitening ethyl cyanoacrylate adhesive composition and a preparation method thereof, and relates to the technical field of instant dry adhesives. The low-whitening ethyl cyanoacrylate adhesive composition is prepared from the following components in parts by weight: 80 to 88 parts of alpha-ethyl cyanoacrylate, 1.2 to 4.0 parts of a cyanoacetamide volatile anchoring agent, 5.0 to 12.0 parts of a low vapor pressure cyanoacrylate monomer, 0.055 to 0.38 part of a stabilizer and 2.0 to 7.0 parts of a thickening agent. According to the low-whitening ethyl cyanoacrylate adhesive composition provided by the invention, the whitening phenomenon can be remarkably reduced, and the main monomer is still alpha-ethyl cyanoacrylate, so that the quick positioning, high shear strength and good adhesive property to various substrates of the traditional ECA adhesive are maintained; the comprehensive performance is balanced.

The present application relates to a kind of photocuring composition and its preparation method and application, the photocuring composition includes the following components: resin, active monomer and photoinitiator.The photocuring composition described in the present application has low photoinitiator mobility, good solubility of photoinitiator in monomer, low energy required when the photocuring composition is cured, high adhesion on the surface of various substrates such as plastic, metal and other difficult to adhere substrates, and the photocuring composition has low odor during curing process, low yellowing degree after curing, high stability and repeatability of the system, and excellent comprehensive performance.

This invention belongs to the field of polymer composite materials technology, and provides a low-odor flame-retardant polypropylene composite material and its preparation method. The preparation of this composite material includes the following steps: mixing polypropylene, a flame retardant, a lubricant, an antioxidant, and a defoamer to obtain a premix; mixing the premix and an odor inhibitor to obtain an intermediate product; and melt-extruding and granulating the intermediate product to obtain the low-odor flame-retardant polypropylene composite material. This invention eliminates odorous volatile substances generated during the preparation of the premix by heating, defoaming with a defoamer, and vacuuming. Furthermore, after eliminating the odorous volatile substances, an odor inhibitor is added to further suppress the generation of unpleasant odors. The resulting polypropylene composite material has advantages such as low odor and high flame retardancy.

The invention relates to the technical field of vinyl acetate-ethylene copolymer emulsion, and discloses a composition for preparing the vinyl acetate-ethylene copolymer emulsion for tile glue, the copolymer emulsion, and a preparation method and application of the copolymer emulsion. 6-8 parts by weight of ethylene; 26-28 parts by weight of a pre-emulsified monomer; 2.2 to 2.4 parts by weight of a repolymerization grafting emulsion; and 39-40 parts by weight of water. The vinyl acetate-ethylene copolymer emulsion is applied to ceramic tile adhesives, has the advantages of good water resistance and high strength, and can be used in the field of ceramic tile adhesives.

The invention relates to the technical field of vinyl acetate-ethylene copolymer emulsions, and discloses a composition for preparing a vinyl acetate-ethylene copolymer emulsion for a cable non-woven fabric, a copolymer emulsion and a preparation method and application of the copolymer emulsion. 13 to 15 parts by weight of ethylene; 2-4 parts by weight of a protective colloid; 0.1-0.3 part by weight of a foaming agent; 0.05 to 0.07 part by weight of a foam stabilizer; and 40-45 parts by weight of water. The vinyl acetate-ethylene copolymer emulsion has a good foaming effect and a good foam stabilizing effect, and is mostly applied to the cable non-woven fabric manufacturing industry.

The invention provides a polyurethane foam material as well as a preparation method and application thereof. The polyurethane foam material is obtained by reacting and foaming a mixed solution of amino-free polyol (A), a reactive amine catalyst (B), a non-reactive amine catalyst (C), an organic silicon foam stabilizer (D), water (E) and isocyanate, based on 100 wt.% of the polyol (A), the content of the reactive amine catalyst (B), the content of the non-reactive amine catalyst (C), the content of the organic silicon foam stabilizer (D), the content of the water (E) and the content of the isocyanate. The invention relates to a polyurethane foam comprising 50 wt.% to 60 wt.% of a polyether polyol (A1) having a number average molecular weight of 7500 or more, 5 wt.% to 15 wt.% of a polyether polyol (A2) having a number average molecular weight of 6500 to less than 7500, and 30 wt.% to 40 wt.% of a polymer polyol (A3), the polyurethane foam having the following properties: a density of 35 kg / m3 to 40 kg / m3 and a tear strength of 3.20 N / mm or more. The material is low in density, good in mechanical property and low in odor.

The invention relates to the field of rubber, and discloses rubber processing modified masterbatch, a preparation method and application thereof, a rubber composition, vulcanized rubber and a preparation method thereof, the rubber processing modified masterbatch comprises maleic acid series monomers, dicumyl peroxide, butadiene styrene rubber, white oil and N, N-dimethylaniline; wherein relative to 100 parts by weight of butadiene styrene rubber, the content of the maleic acid series monomer is 133 to 400 parts by weight, the content of the dicumyl peroxide is 10 to 67 parts by weight, the content of the white oil is 17 to 100 parts by weight, and the content of the N, N-dimethylaniline is 7 to 40 parts by weight; the modified rubber master batch for rubber processing can improve the compatibility and dispersity of maleic acid series monomers in a rubber matrix, so that the strength and wet skid resistance of vulcanized rubber are improved, and the rubber master batch is good in flexing resistance.

The invention relates to a TPU / PVC (thermoplastic polyurethane / polyvinyl chloride) modified film as well as a preparation method and application thereof. The TPU / PVC modified film comprises the following components in parts by mass: 50-75 parts of polyether type TPU; 25 to 50 parts by mass of PVC resin; 20-35 parts by mass of a plasticizer; 1-2 parts by mass of a composite calcium-zinc stabilizer; 0.4 to 0.6 part by mass of an anti-ultraviolet light absorber; 0.2 to 0.5 part by mass of a composite antioxidant; 0-0.2 part by mass of a lubricant; in the preparation process, the PVC and the TPU are fused; a structure with TPU as a continuous phase and plasticized PVC as a dispersed phase is formed. The TPU / PVC modified space composite material is of a sandwich structure and comprises a surface layer, a bottom layer and a middle layer, wherein the surface layer and the bottom layer are TPU / PVC modified films, and the middle layer is space mesh cloth. Compared with the prior art, the TPU / PVC modified space composite material has the advantages of light smell, good flexibility, low temperature resistance, weather resistance and hydrolysis resistance.

The present application relates to the technical field of antioxidant preparation, and particularly relates to a method for removing the smell of thiodipropionic acid. The method comprises the following steps: preparing thiodipropionic acid solution by adding water to thiodipropionic acid, then passing water vapor to perform steam stripping, then passing ozone to perform oxidation treatment, and then performing cooling crystallization, centrifugation and drying. The method can improve the smell stability of thiodipropionic acid during storage.

The application belongs to the field of polymers and relates to a low-VOC modified polypropylene composition, a biaxially stretched polypropylene film and a green and environment-friendly polypropylene capacitor film. The modified polypropylene composition comprises modified polypropylene grafted with an alkenyl functional monomer, a VOC inhibitor, an antioxidant and a processing aid. The modified polypropylene grafted with the alkenyl functional monomer comprises structural units derived from polypropylene as a matrix phase and structural units derived from the alkenyl functional monomer as a dispersed phase. The biaxially stretched polypropylene film of the application can maintain good dielectric properties and energy storage properties at a high working temperature and is suitable for high-temperature and high-operation-field-strength working conditions.

The application belongs to the technical field of polyether preparation, and discloses a solid superbase catalyst and a method for preparing isomeric alcohol polyether by using the same. The solid superbase catalyst comprises a catalyst carrier and a strong base loaded on the catalyst carrier; the strong base is at least one selected from CH3OK, CH3ONa, KOH and NaOH; and the catalyst carrier comprises one of MgO, ZrO2 and Al2O3. The solid superbase catalyst provided by the application is composed of a catalyst carrier and a strong base loaded on the catalyst carrier, and has high catalytic activity and high reaction efficiency. When the solid superbase catalyst is used as a catalyst, isomeric alcohol polyether with low odor, narrow molecular weight distribution and few by-products can be prepared.

This invention relates to the field of adhesive preparation technology, and particularly to an environmentally friendly composite organic adhesive suitable for reinforcing and bonding multifunctional backpack components. The adhesive comprises 35% epoxy resin, 10% polyurethane, 35% ethyl cyanoacrylate, 10% liquid crystal polymer powder, 5% banana oil, and 5% acrylic acid. Synergistic effect of multiple components: epoxy resin provides high strength and rigidity, polyurethane provides flexibility and toughness, ethyl cyanoacrylate provides fast fixation, and liquid crystal polymer powder provides wear and weather resistance. The six components complement each other, achieving a combination of fast curing, high strength, flexibility, and weather resistance. Perfect compatibility with multiple materials: It exhibits excellent adhesion to fabrics such as nylon, polyester, and canvas, as well as ABS, PC, PP, TPU, and polyethylene fibers, with strong interfacial bonding and no selective adhesion defects. Extremely adaptable to various working conditions: It is resistant to repeated bending, friction and wear, water immersion, UV aging, and high and low temperatures, meeting the requirements of complex outdoor environments and long-term dynamic use, and the bonded parts are not prone to failure.

The invention discloses a polycarbonate diol post-treatment method which comprises the following steps: S1, mixing polycarbonate diol with dilute acid to fully hydrolyze a titanium catalyst; s2, mixing the polycarbonate diol mixed with dilute acid with water, and feeding the mixture into a coalescer for oil-water separation; s3, the Ti content of polycarbonate diol prepared after the oil phase is dehydrated and dried is 1t; the total amount of free alcohol is 1t; in addition, the odor is obviously reduced. The polycarbonate diol prepared by the treatment method has the advantages of low catalyst residue, low free alcohol residue, low odor and the like, and has industrial feasibility.

Photoinitiator comprising 2 to 6 monoacylphosphine oxide moieties, characterized in that the monoacylphosphine oxide moieties are connected to each other via their acyl groups and at least 2 monoacylphosphine oxide moieties have a different chemical structure in the phosphine oxide moiety.

This utility model discloses a 14-chamber rotary valve oxidation device, including an oxidation chamber assembly, a heat storage chamber assembly, an inlet / outlet chamber switching valve assembly, and a centrifugal fan. The oxidation chamber assembly is installed on top of the heat storage chamber assembly, and the inlet / outlet chamber switching valve assembly is installed below the heat storage chamber assembly. An operating platform and steps are installed on the outer surface of the heat storage chamber assembly, and heat storage chamber support legs are installed on the lower plane of the heat storage chamber assembly. An inlet chamber connection channel is installed on one side of the inlet / outlet switching valve assembly, and the input end of the inlet chamber connection channel is connected to the centrifugal fan. This utility model, by setting up a separate exhaust chamber switching valve assembly with 14 individual chambers inside, and the heat storage chamber having 14 individual chamber spaces, combined with the continuous rotation and switching of the exhaust chamber switching valve assembly, can effectively solve the problems of low utilization rate and uneven temperature field in the heat storage chamber, thereby improving the stability and safety of the equipment.