3841 results about "Volatile organic compound" patented technology

A remedial pollution control system for treating volatile organic compounds that may include a vapor concentrator connected to a line that is laden with volatile organic compounds, the concentrator has an organic condensate output line and a vapor output line; a mixing chamber adapted to receive air provided from an air supply line, combustible fuel from an alternate fuel supply line, and a vapor stream from the vapor output line to produce a mixed fuel supplied to an internal combustion engine, a control mixing system with a controller for producing a proper air to fuel ratio in the mixed fuel supply, and power generated to operate other devices used to more efficiently abate volatile organic compounds and reduce greenhouse gas emissions.

The invention relates to waterborne conductive ink which comprises the following components in percentage by weight: 1-40 percent of polymer emulsion or dispersion liquid, 0.1-0.7 percent of dispersant, 0.1-0.3 percent of wetting agent, 0.2-1.8 percent of defoaming agent, 30-70 percent of conductive material, 0.5-3 percent of film-forming addition agent and 5-60 percent of water. The waterborne conductive ink disclosed by the invention has the advantages of no toxicity or odor, safety, environment friendliness, convenience in use, resource economization, favorable film forming performance and printing performance of ink, strong adhesive force and good weather resistance; the defects of toxicity, harm, inflammability and explosiveness of solvent ink are overcome; and water replaces organic solvent, so that a volatile organic compound (VOC) is reduced, and the production cost is also reduced.

The present invention provides an electronic nose device based on chemically sensitive field effect transistors. In particular, the sensors of the electronic nose device are composed of non-oxidized, functionalized silicon nanowires which can detect volatile organic compounds with very high sensitivity. Methods of use in diagnosing diseases including various types of cancer are disclosed.

The present invention is an advanced co-generation system for abating solid wastes, hydrocarbons and other volatile organic compounds (VOC's) produced by various processes utilizing a Stirling cycle engine, turbines or other internal combustion engines doing useful work. The turbine exhaust is directed into an abatement chamber which may include a catalyst that is designed to operate at high temperature and includes supplementary fuel and air inputs which are controlled by a computer that receives sensor inputs to achieve the requisite heat ranges necessary to convert exhaust and VOC's to non-toxic substances. The exhaust generated by the abatement chamber is directed to a Stirling cycle engine for additional heat generation and recovery. The exhaust generated from this process can also be used to perform direct or indirect heating.

The invention relates to a soil pollution thermal desorption restoration processing system, which belongs to a soil restoration processing system. The system comprises a feed system, a heat source system and a control system, and is characterized by further comprising a thermal desorption system and a tail gas processing device, wherein the thermal desorption system consists of a draught fan and a thermal extraction converter, and the tail gas processing device consists of a dust remover and an absorption tower. When the system is applied to processing polluted soil with main pollutants of volatile/semi-volatile organic compounds, compared with the like products in other countries, the equipment cost is only 1/3 to 1/5 of the same; the problem of secondary pollution probably brought about in the process of processing the polluted soil is thoroughly avoided; a temperature control system has better practicability; the running cost for each ton of the polluted soil is between 300 and 500 RMB, which is far low than the processing cost for hazardous landfilling and incineration of the polluted soil; and half of the purification effect of processing the polluted soil with the main pollutants of the volatile/semi-volatile organic compounds can reach between 70 and 80 percent.

The invention relates to the field of automobiles, and belongs to a PP composite material special for low VOC (volatile organic compounds) high performance automobile interior trim parts and a preparation method thereof. The special material is prepared from the following compositions by mass portion: 60 to 80 portions of polypropylene (PP), 10 to 25 portions of reinforcing filler, 10 to 15 portions of toughening agent, 0.5 to 2 portions of inorganic photocatalyst, 0.2 to 0.5 portion of antioxidant and 0.1 to 0.5 portion of light stabilizer. The prepared polypropylene composite material has TVOC less than 40 mu gC/g, the notch impact strength of a cantilever beam at 23 DEG C between 10 and 42KJ/m, bending modulus between 1,000 and 2,400 MPa, and the melt index at 230 DEG C and 2.16 Kg between 10 and 30g/10min. The PP composite material of the low VOC interior trim parts for the automobiles has low cost, good stability and the function of self-purification of VOC, and can be widely applied to production of the automobile interior trim parts.

A method for enhancing the performance of hair fixative resins in hair styling compositions by using selected polymers having certain compositions is disclosed. In particular, the present invention involves a method of improving the stiffness performance of hair fixative resins by using polymers containing 5-95% (C1-C10)alkyl (meth)acrylate, 0-70% hydroxyalkyl (meth)acrylate, 0-50% monocarboxylic acid monomer and 1-25% dicarboxylic acid monomer. The selected polymers are particularly useful in aqueous hair styling compositions containing low (80% or less) volatile organic compound (VOC) concentrations.

The invention is related to glossy, low- or zero-VOC aqueous paint compositions, comprising water based latex polymer, a hiding pigment, at least one low-VOC coalescence aid having a volatile organic content of less than 50 g/L, and a second inorganic pigment with particle size ranging from about 1 to 100 nanometers. The paint composition gives good block resistance and mechanical strength and can be adopted for paints with at least glossy and semi-gloss finishes.

The outside treating process of polluted soil includes the following steps: excavating the polluted soil, filling the soil inside the treating apparatus, pumping with vacuum pump to form certain vacuum degree in the pumping well while intruding fresh air into soil to promote the volatilization of pollutant and taking out the volatile. The soil may be also heated to speed the volatilization. The treating apparatus consists of exhaust well with exhaust pipeline, temperature controlling sensor and heater embedded into soil pipe. The treated soil may be re-filled or used in other site.

A moisture-curable adhesive composition that may be formulated to be free of volatile organic compounds, or substantially free of volatile organic compounds which is safe for chronic exposure, resistant to combustion, and provides a high peel strength useful for securing a rubber membrane material to a rigid roof deck includes a polymer having silicon-containing hydrolyzable terminal groups, a phenolic resin, and a non-polymeric silicon-containing hydrolyzable compound, wherein the ratio of the amount of polymer having silicon-containing hydrolyzable terminal groups by weight to the amount of phenolic resin by weight is greater than 2:1.

The invention relates to a high-sealing polyacrylic ester dispersoid and a preparation method thereof; a multi-element emulsifier system which consists of an anionic emulsifier and a compound non-ionic emulsifier is adopted for controlling the charging process and components of the emulsifier in different polymerization periods, and the room-temperature self-crosslinking high-sealing polyacrylic ester dispersoid is prepared by a semi-continuous seeding emulsion polymerization process. The dispersoid has small particle size, good electrolyte-resistance (calcium ion) stability and high tolerance to various film forming accessory ingredients (various organic solvents with high boiling point). The dispersoid is used as seal coat of water-based wood coating and has good sealing performance to various woods; harmful volatile organic compounds (VOC) such as formaldehyde, and the like sealed against escaping from plates to pollute indoor environment, and the colored compounds such as turpentine, pine oil and tannin and the like are sealed against dissolving out of the plates to pollute pure top coating and white top coating of a water-based wooden ware; and in addition, the dispersoid can be used in water-based leather finishing agents.

Generally, this invention relates to the development of field monitoring methodology for new substances and sensing chemical warfare agents (CWAs) and terrorist substances. It also relates to a portable test kit which may be utilized to measure concentrations of halogenated volatile organic compounds (VOCs) in the field. Specifically it relates to systems for reliably field sensing the potential presence of such items while also distinguishing them from other elements potentially present. It also relates to overall systems and processes for sensing, reacting, and responding to an indicated presence of such substance, including modifications of existing halogenated sensors and arrayed sensing systems and methods.

The present invention relates to an apparatus for effectively purifying and neutralizing toxic gases such as odors, fumes or various volatile organic compounds generated by research laboratories, chemical processing factories or hospitals where medicinal products are handled. The apparatus according to the present invention comprises: a main body having an intake, an exhaust and a control panel; a pre-filter, a first filter, first and second neutralizing pellet beds, and a second filter which are mounted in the apparatus main body and are placed from the intake to the exhaust in that order; and a blower and a driving device placed between the first and second neutralizing pellet beds. The apparatus effectively purifies and neutralizes toxic gases and collects fine particles or dust. Thus, the apparatus helps to maintain health of researchers, people who perform experiments, workers in chemical factories, or medical workers, since the filter and neutralizing pellet bed are configured in a cartridge form, the apparatus is low-maintenance. Also, additional connection of other facilities or pipes is not required. Therefore, the apparatus has high usability due to the independent compact form and function thereof, and can be driven with less noise.

An aerosol dispenser assembly (1) has a container (2) holding a liquid product and a liquefied gas propellant for propelling the liquid product from the container, the propellant being present in a quantity of at most about 25% by weight of the contents of the container (2). A valve (4) is attached to the container (2) for selectively dispensing the liquid product from the container (2) as a mist. The assembly (1) is configured such that the mist has a small particle size, is dispensed at an expeditious rate, and very little product is retained in the container (2) when the propellant is depleted.

The invention provides a system for restoring organic contaminated soil by forced ventilation and spiral stirring thermal desorption, which comprises an air preheating system, a spiral stirring thermal desorption system, a tail gas treatment system and a control system, wherein the air preheating system consists of a blower and an air heater, the spiral stirring thermal desorption system consists of a spiral stirring thermal desorption device and a draft fan, the tail gas treatment system consists of a cyclone dust collector, a dehumidifier and an absorption tower, and the control system can realize the effective control of the rotation speed of a spiral stirrer, the air preheating temperature and the soil heating temperature. The system can be used for restoring soil contaminated by volatile/semi-volatile organic matters.

The invention relates to high-solid hydroxyl fluorine-containing acrylic resin and a preparation method thereof. The high-solid hydroxyl fluorine-containing acrylic resin comprises the following components in parts by weight: 10-25 parts of fluorine-containing acrylic ester monomer, 10-30 parts of hydroxyl group-containing acrylic ester monomer, 5-20 parts of methyl acrylic alkyl ester monomer, 5-15 parts of acrylic alkyl ester monomer, 0.3-6 parts of initiator, 0.2-4 parts of chain transfer and 30-50 parts of solvent. According to the hydroxyl fluorine-containing acrylic resin, the solid content reaches up to 75-90 percent, the viscosity is only 900-3,000 mPa.s, the number-average molecular weight is 1,200-6,000, and the molecular weight distribution index is 1.4-2.5; and the resin has the advantages of superior performance, high transparency, no odor of mercaptan, low VOC (Volatile Organic Compound) content, a fluorine carbon group included on a polymer chain and superior corrosion resistance of the resin and can be applied to the fields such as heavy anticorrosive coatings, marine antifouling coatings, aircraft surface coatings, anti-doodling coatings, exterior wall coatings of high weathering resistance and the like.

The present invention provides hydrophilic surface modifying macromolecules (H-phil SMM) and H-phil SMM and blended membranes produced incorporating the hydrophilic surface modifying macromolecules. The membranes include a hydrophilic base polymer, and the hydrophilic surface modifying macromolecules (H-phil SMM) which impart surface hydrophilic properties to the membrane. The membranes produced with the surface modifying macromolecules give polymer membranes useful in the separation of water from a solution containing volatile organic compounds and water.

The present invention relates to solvent based coatings which have a low level of volatile organics compounds (VOC) meeting California VOC regulations and which can be spray applied as a coating on a variety of surfaces. The coating formulation comprises a hydrogenated styrene/butadiene triblock copolymer, a hydrogenated styrene/butadiene diblock copolymer, at least one hydrocarbon solvent, at least one VOC exempt solvent, a midblock tackifying resin, and a pigment or filler. The relative amounts of solvent, tackifying resin and pigment are adjusted to obtain a solvent based, elastomeric coating having a VOC content of no more than 250 grams per liter and a viscosity no higher than 2,000 centipoise @ 25° C. as measured according to ASTM D2196.

The invention discloses a honeycomb ceramics perovskite catalytic combustion catalyst; the honeycomb ceramics with a metal oxide coating is used as a carrier; the catalytic activity components disclosed in formula (I) are loaded; wherein, La, Sr, Co, and Mn respectively represent lanthanum, strontium, cobalt, and manganese; x is equal to 0 to 0.7 and y is equal to 0 to 0.7; the honeycomb ceramics with a metal oxide coating is to load a metal oxide coating of gamma-Al2O3, CemZr1-mO2, LaMnAl11O19, BaMnAl11O19 or Sr12Al14O21 on the surface of the honeycomb ceramics of a dichroite material; wherein, m is equal to 0.1 to 0.8; the mass ratio of the honeycomb ceramics, the metal oxide coating and the catalytic activity components is 1.0 : 0.03 to 0.2 : 0.05 to 0.15. The invention also relates to a preparation method for the catalyst and the applications of the catalytic combustion thereof to eliminate the waste gases of volatile organic compound; the dichroite honeycomb ceramics carrier and the catalytic activity components of the prepared honeycomb ceramics perovskite catalytic combustion catalyst are combined by one metal oxide coating with high adhesiveness and thermal stability, thus leading the catalyst to have the advantages of high mechanical intensity, high activity and good thermal stability. The catalyst provided by the invention is simple in preparation method, is low in the price of the used materials, and has excellent industrial application prospect. La1-xSrxCoyMn1-yO3 (I).

Novel latex or emulsion compositions containing internally plasticizing and crosslinkable monomers derived from traditional semi-drying or non-drying oils are disclosed and claimed. The monomers are ethylenically unsaturated derivatives of long-chain olefinic compounds. Preferred embodiments include latex formed from acrylate or methacrylate esters of fatty alcohols. A process for the synthesis of the latex composition is also disclosed, which involves (a) polymerization of the ethylenically unsaturated derivatives of a long-chain olefinic compound in an aqueous phase with at least one other copolymerizable monomer; and (b) blending of so formed polymer with at least one drier and a surfactant to form the novel latex or emulsion compositions. These compositions form films at low minimum film forming temperatures (MFT) ranging from -5 to 10° C. and cure to above ambient glass transition (Tg) polymers without the use of traditional organic cosolvents which contribute to environmental pollution via volatile organic compounds (VOCs) emissions. These compositions are therefore useful in waterborne coatings, contact and pressure sensitive adhesives, and inks.

The present invention pertains to methods utilizing ozone treatment for abating allergens, pathogens, odors, and volatile organic compounds. The methods can be employed to abate pollutants, bacteria, viruses, mold, dander, funguses, dust mites, animal and smoke odors, and the like. The methods employ specific combinations of ozone concentration, hydrogen peroxide concentration, temperature, and humidity delivered over a specified period of time to achieve satisfactory abatement of the allergen, pathogen, odor, or volatile organic compound.

Reversed phase suspension polymerization is allowed while controlling content of minor components in monomer, particularly controlling a content of acetic acid and propionic acid being not higher than 500 ppm, controlling a content of acrylic acid dimer being not higher than 1000 ppm, in acrylic acid. Cross-linked polymer obtained by the polymerization is subjected to a surface crosslinking treatment without substantially using an organic solvent, and under heating at high temperature (150° C. or higher and 250° C. or lower). Thereafter, agglomeration is carried out without substantially using an organic solvent. Accordingly, a particulate water-absorbing agent including a water-absorbing resin having superior property, and being suited for practical applications at high concentrations in absorbing cores such as a diaper and the like without generation of any odor of the organic solvent can be obtained because no volatile organic compound is included.

The invention belongs to a polypropylene (PP) composite material with a low volatile organic compound (VOC) and high performance specially used for automotive upholsteries and a preparation method thereof, relating to the automobile field. The special material is prepared from the following components by mass percent: 60-80% of polypropylene (PP), 10-25% of reinforcing filler, 10-15% of flexibilizer, 0.2-0.5% of antioxidant and 0.1-0.5% of light stabilizer. The total volatile organic compound (TVOC) of the polypropylene composite material obtained in the invention is less than 40 mu gC/g; the notch impact strength of a cantilever beam under 23 DEG C is 15-40kJ/m2; the flexural modulus is 1500-2300MPa; the melt index is more than 10g/10min at a temperature of 230 DEG C and at a weight of 2.16kg; and the composite material has favorable light and heat stability, low VOC, few components, low cost, good performance, easy preparation and can be widely used in the production of automotive upholsteries.

A deposition apparatus includes a vacuum chamber and a heating crucible. A substrate, on which deposition films are formed, is installed in the vacuum chamber. The heating crucible is installed opposite to the substrate so as to vaporize an organic compound. The heating crucible includes a main body and an inner plate. The main body includes a space which contains the organic compound and a nozzle through which the organic compound that is vaporized is discharged. The inner plate is installed within the main body and includes at least one opening formed around an edge of an area facing the nozzle, so as to transmit the vaporized organic compound.

The invention provides a room temperature fast-drying highly-anticorrosive two-component waterborne epoxy coating and a preparation method for the coating. The coating comprises A and B two components, wherein the A component consists of liquid epoxy resin, solid epoxy resin, an epoxy resin reactive diluent, a cosolvent, and a non-ionic surface active agent; the B component consists of a waterborne epoxy curing agent, an anticorrosive pigment, a foam killer, a corrosion inhibitor, a substrate wetting agent and de-ionized water, and during application, mass proportion of the A component to B component is 1:3-6. The coating is high in curing speed of coated film, the surface is dried in 30min at room temperature without being roasted; the coating has high early hardness, and the hardness can reach 3H in 48 hours; and in addition, the coating is good in thermal resistance stability, low in VOC (Volatile Organic Compound) content, excellent in anti-corrosion performance, and is capable of replacing a solvent type two-component epoxy coating to be applied to the anti-corrosion of a steel structure.

The invention relates to an online gas volatile organic matter analyzer and a using method thereof. The analyzer comprises a sampling device (1), a gas supplying device (2) and a refrigerating device (3), wherein the refrigerating device (3) is connected with the sampling device (1) and the gas supplying device (2) respectively. A double-hollow-pipe cold enriching double-detector gas online volatile organic matter analyzer further comprises a gas flow control device (4), an analysis device (5) and a data acquiring and processing device, wherein the gas flow control device (4) is connected with the sampling device (1) and the gas supplying device (2) respectively; the analysis device (5) is connected with the gas flow control device (4); and the data acquiring and processing device is connected with the analysis device (5). The invention has the advantages: ultralow temperature refrigeration is realized by adopting an electronic refrigerating technology, so that the defects of frequent addition of liquid nitrogen during refrigeration with liquid nitrogen and limit on the application conditions are overcome, the analyzer can run automatically continuously for a long time, and automatic operation is convenient.

The invention discloses a waterborne rust conversion polymer emulsion. The waterborne rust conversion polymer emulsion is prepared by the polyreaction of alkenyl halide monomers, monomers of (methyl)acrylic acid and esters of (methyl)acrylic acid, alkene phosphate ester monomers, a complexing agent, a compound emulsifying agent, an initiator and deionized water in an inert atmosphere at a pressure of 0.08 to 0.12MPa and a temperature of between 50 and 60 DEG C; and the percentages of dosages of all components on the basis of the total weight of all polyreaction monomers are: 75.0 to 95.0 percent of alkenyl halide monomers, 1.0 to 5.0 percent of alkene phosphate ester monomers, 5.0 to 10.0 percent of monomers of (methyl)acrylic acid and esters of (methyl)acrylic acid, 0.05 to 0.5 percent of initiator, 2 to 4 percent of compound emulsifying agent, 1.0 to 10.0 percent of complexing agent and 100 to 120 percent of deionized water. The coating prepared by the emulsion has the characteristics of good adhesive force, strong covering force, good stability, acid resistance, alkali resistance, salt spray corrosion resistance and long service life, and can be directly coated on the surfaces of metallic materials with a tight rusty layer without the rust removal treatment; and in a film-forming process, no volatile organic compounds are discharged, so that the coating of the invention is a green environmentally protected antirust coating.

The invention relates to a cement-based grouting material used for strengthening repairing as well as a preparation method and application thereof. The cement-based grouting material comprises the following components in parts by weight: 300-500 parts of cement, 200-300 parts of admixtures, 300-400 parts of fillers, 3-6 parts of water-reducing components, 0.1-1 part of plastic swelling component, 10-20 parts of hardened swelling components, 0.01-0.2 part of stable component, 1-4 parts of early strength components, 0.2-2 parts of defoaming components and 0.01-0.2 parts of emulsifying component. The cement-based grouting material disclosed by the invention has performance advantages such as higher injection-molding performance, initial fluidity not greater than 17s, impermeability not exceeding 1mm, wear resistance not exceeding 10cm<3>/cm<2>, compressive strength within 2 hours not lower than 5MPa, compressive strength within 1 day not lower than 30 MPa, and the like. The cement-based grouting material has composite swelling, the free swelling ratio within 3 hours is 0.02%-2% and grouting is full and dense; the viscosity is low, the volume stability is good and durability is good; the cement-based grouting material does not contain VOC (volatile organic compounds), and is environment-friendly.

The invention provides a waterborne epoxy modified emulsified asphalt concrete for a steel bridge surface and a preparation method thereof. The waterborne epoxy modified emulsified asphalt concrete for the steel bridge surface is prepared by the following steps of: adding waterborne epoxy resin, a curing agent, and a stabilizing agent into modified emulsified asphalt, continuously stirring until the mixture is uniform, and shearing to obtain waterborne epoxy resin modified emulsified asphalt emulsion; and stirring coarse aggregate and fine aggregate in a container, adding the waterborne epoxyresin modified emulsified asphalt and then stirring, adding a filler and then mixing and stirring, and adding cement and stirring to obtain the waterborne epoxy modified emulsified asphalt concrete. A paving material prepared by the method has the characteristics of environment-friendliness, low volatile organic compound (VOC), low energy consumption, high bonding strength with a steel plate, high cryogenic stabilization, excellent water stability performance, high tenacity, and high fatigue resistance performance.

The present invention provides a method for making a heating element adhered to a substrate by applying a photocurable composition to a flexible substrate in a pattern having one or more grid lines. The photocurable composition is curable into an electrically conductive layer and volatile organic compounds are present in an amount of less than about 10% of the total weight of the photocurable composition. After the pattern is deposited on the substrate it is cured by illuminating the photocurable composition with light for a sufficient period of time to cure the photocurable composition. In another embodiment of the invention heating elements made by the method of the invention are provided.