337 results about "Aromatic solvent" patented technology

Methods and compositions for on-line cleaning of internal surfaces of selected sections of a hydrocarbon fuel burning gas turbine and associated heat recovery equipment, during operation. Cleaning solutions containing graphite and / or molybdenum-based particles and oil soluble corrosion inhibitors, aromatic solvents, and surfactants are selectively introduced directly into the combustion chamber (combustor) of the gas turbine, into the fuel stream, water washing system, or the combustion air system (hot gas path). The cleaning process dislodges unwanted ash deposit buildup and, thereby restores the gas turbine to rated power. When introduced into the compressor section, the particles impinge on the metal surfaces, cleaning them prior to entering the hot gas section where the process may be repeated. They may also be carried through the exhaust to additionally clean attendant heat recovery equipment, if present.

Compositions useful for controlling pests are disclosed. In some embodiments, the composition includes a pesticidal natural oil and a polar aromatic solvent. Methods of making and using the compositions are disclosed.

The invention discloses a functional coating resin which consists of 12-16 portions of bifunctional alcohol, 2-8 portions of multifunctional alcohol, 18-25 portions of bifunctional acid, 8-15 portions of bifunctional anhydride, 0.5-4.5 portions of multifunctional anhydride, 0.03-0.1 portion of catalyst, 24-30 portions of high boiling aromatic solvent and 3-6 portions of mixed ester. The preparation method of the functional coating resin is carried out by the steps according to the proportion: 12-16 portions of bifunctional alcohol, 2-8 portions of multifunctional alcohol, 18-25 portions of bifunctional acid, 8-15 portions of bifunctional anhydride, 0.5-4.5 portions of multifunctional anhydride, 0.3-0.1 portion of catalyst, the melting esterifiction, dehydration, high temperature polymerization are carried out by a gradual temperature-gradient method for 4 hours under 150-160 DEG C, 3 hours under 160-180 DEG C, 2 hours under 180-200 DEG C and 2 hours under 200-220 DEG C, reacting another 2-4 hours under 200-225 DEG C,24-30 portions of high boiling aromatic solvent is added and 3-6 portions of ester is mixed for dilution when the control requirements are achieved, thus obtaining the finished product. The functional coating resin is characterized by good workability, marresistance, thermal resistance and aging resistance, the product coating produced by matching the functional resin with pigments e.g. rutile titanium dioxide powder and phthalocyanine, amino resin and aids has excellent weatherability and mechanism character.

The lubricating oil composition of the present invention comprises at least one species of aromatic constituent selected from the following (a1) to (a5):(a1) a lubricating base oil comprising a polycyclic aromatic content of 0.01% by mass or more based on the total amount of base oil(a2) a lubricating base oil comprising a total aromatic content of 20 to 100% by mass based on the total amount of base oil(a3) an aromatic solvent(a4) at least one species of polycyclic aromatic compound selected from alkyl naphthalene and compounds having three or more aromatic rings, and(a5) an aromatic compound having a nitrogen atom, an oxygen atom or a sulfur atom;and an organic molybdenum compound.

A method of producing a controlled release form of an agricultural active material includes the provision of an organic liquid composition in which the active is present, but where the liquid composition is free from aromatic solvents and is maintained below the normal melting point of the active. The liquid composition is formed into small droplets and the droplets are enclosed by a non-water soluble shell to provide microcapsules, the shell of which is designed to release the agricultural active at a pre-selected controlled rate when the microcapsule is exposed to natural environmental conditions. Controlled release forms of agricultural actives are also provided.

A diesel fuel lubricant as a replacement for sulfur lubrication in Ultra-Low and Low Sulfur Diesel fuels, the process for producing said lubricant, and the method of using said lubricant. This lubricant comprises alpha-olefins; low odor aromatic solvents; and at least one a base oil selected from the base oil group consisting of hydroisomerized high base oils and HT Severe Hydro-cracked Base Oils; as well as other ingredients. Also disclosed is a method for producing this lubricant.

The invention discloses a room temperature-curing environment-friendly anticorrosive coating for a circuit board and a preparation method thereof. The anticorrosive coating is prepared through complex formulation of the following raw materials by mass: 50 to 90 parts of a polyurethane modified alkyd resin, 20 to 80 parts of an environment-friendly solvent, 0.01 to 2.0 parts of a main drier, i.e., cobalt naphthenate, 0.01 to 3.0 parts of a secondary drier A which is one or two selected from the group consisting of zinc isocaprylate and zinc naphthenate, 0.01 to 6.0 parts of a secondary drier B which is one or two selected from the group consisting of zircon isocaprylate and zirconium naphthenate, 0.1 to 3.0 parts of a fluorescent agent and 0.01 to 2 parts of a stabilizing agent. The tri-proof coating for the circuit board provided by the invention uses a plant extract as a resin source and is prepared through complex formulation of the resin, the environment-friendly solvent, corresponding metal driers and other auxiliary agents. The prepared coating does not contain aromatic solvents like xylene and ethylbenzene and has the advantages of little smell, a fast curing speed, good adhesion and excellent electrothermal performance.

The club cleaner, conditioner and protectant comprises alpha-olefins, low-odor aromatic solvents; and at least one base oil selected from the base oil group consisting of Hydroisomerized high base oils and HT Severe Hydro-cracked Base oils; as well as other (optional) ingredients. Also disclosed is a method for producing this product and related product-by-process. This product uses a formulated cleaning mixture to clean and restore the face of the club while rejuvenating the grips. The invention when sprayed on the clubface removes foreign materials and when wiped dry protects the face of the clubs from harsh stains, caused by soils, grass and chemicals related to fertilizers. In experimental testing, the invention increases drive distances by reducing sidespin and increasing backspin. The club is left with a factory-like finish making it easy to wipe clean of soiling. The invention when applied to the grips restores the surface to the new feel.

A method of producing a controlled release form of an agricultural active material includes the provision of an organic liquid composition in which the active is present, but where the liquid composition is free from aromatic solvents and is maintained below the normal melting point of the active. The liquid composition is formed into small droplets and the droplets are enclosed by a non-water soluble shell to provide microcapsules, the shell of which is designed to release the agricultural active at a pre-selected controlled rate when the microcapsule is exposed to natural environmental conditions. Controlled release forms of agricultural actives are also provided.

The present invention provides a method for producing a film forming, fractionated novolak resin, by: a) condensing formaldehyde with one or more phenolic compounds, and thereby producing a novolak resin; b) adding a photoresist solvent, and optionally a water-soluble organic polar solvent; c) feeding the mixture into a liquid / liquid centrifuge and feeding a C5-C8 alkane, water or aromatic hydrocarbon solvent into the liquid / liquid centrifuge at a ratio of optional water-soluble organic polar solvent and photoresist solvent to C5-C8 alkane, water or aromatic solvent, of from 5:1 to 0.5:1; d) rotating the liquid / liquid centrifuge containing the mixture at a speed of at least 500 rpm and thereby separating the mixture into two phases, collecting the two phases; e) optionally separating the lighter phase (L) into two second phases; f) removing residual C5-C8 alkane, water or aromatic hydrocarbon solvent from the heavier phase (H) from step d) and leaving the novolak resin dissolved in the photoresist solvent; A method is also provided for producing photoresist composition from such a fractionated novolak resin and for producing microelectronic devices using such a photoresist composition.