solvent (Total 26899 Patents Found)

This invention relates to a simple, rapid and direct gaschromatographic (GC) procedure for detecting residual solvents and other volatiles present in vegetable oils, peanuts, nutbutter products, and oilseed meals and flours. A sample of the product to be analyzed is placed between glass wool plugs in a glass insert tub...
An image formation apparatus including a latent electrostatic image formation unit for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image corresponding to an original image; a development unit for developing the latent electrostatic image into a visible toner image with...
The oil in comminuted oil-containing vegetable matter is extracted by passing the vegetable matter through a closed extraction zone in contact preferably in countercurrent flow relation with a liquid extraction medium, which is a normally gaseous hydrocarbon, preferably propane, under a pressure sufficient to liquify t...
Cold-cured molded polyurethane flexible foams having improved vibration damping properities are made by foaming in the presence of (1) a high molecular weight predominantly linear siloxane polyoxyalkylene block copolymer and (2) a solvent which is compatible with the block copolymer and which has a viscosity of 3 to 10...
A photographic light-sensitive material comprising a support having thereon at least one silver halide photographic emulsion layer and containing an emulsified dispersion comprising an organic solvent and an organic solvent gelling agent in at least one hydrophilic colloid layer thereof, a process for producing an emul...
The solvent vapor concentration which is mixed with air and is obtained in the treatment of articles in an apparatus is controlled in the apparatus by a method comprising the following steps: a) passing gaseous solvent vapor/air mixture from the apparatus through at least one adsorber containing an adsorbent for ...
Asymmetric membranes are prepared by selectively treating a major surface of an incompatible polymer blend prepared by melt blending having at least one extractable polymer component and then contacting the polymer blend with a solvent to extract the extractable polymer component. The treated surface becomes the dense ...
An interface generally useful for liquid chromotography systems and methods is provided for the separation of an analyte of interest from a liquid solvent. The interface provides for separation and collection of solvent and the analyte of interest in a gaseous molecular state. In this manner, the ability to detect, ide...
A process includes dissolving a polymer in an organic solvent to form a polymer solution and forming a latex from the polymer solution by contacting the polymer solution with steam while substantially simultaneously distilling the organic solvent....
The crease resistant properties of cellulosic fabrics is improved by rendering the fabrics highly resistant to both wet and dry wrinkling without serious detriment to fabric tensile strength, tear strength and flex abrasion resistance. This is accomplished by including dimethyl sulfoxide as an essential ingredient in t...
Systems and methods for separation of oleaginous fluids, aqueous fluids, and solids from drilling or other oilfield emulsions by solvent extraction. A method for separation of oilfield emulsions comprising: providing an oilfield emulsion prepared for use in a wellbore and/or recovered from a wellbore; mixing the oilfie...
A photochromic composition that is liquid at 20° C. and includes (a) at least one photochromic dye and (b) an ionic solvent selected from (b)(i) room-temperature ionic liquids (RTIL), (b)(ii) ionic liquid mixtures that are liquid at room temperature, and (b)(iii) room-temperature liquid mixtures of at least one ionic ...
The present process for removing residual water molecules is suitably used in a metallic thin film production method of forming a metallic thin film on a substrate. The residual-water-molecule removal process involves removing residual water molecules using a gas generated by vaporizing a purge solvent. Preferably, the...
L'invention concerne un copolymère biocompatible de polyisobutylène uréthane, d'urée, et d'uréthane/urée comprenant des segments durs et des segments souples, qui est exempt d'uréthane, d'urée ou de solvants d'uréthane/urée. Les segments durs comprennent un résidu de diisocyanate. Les...
L'invention a pour but de proposer un liquide ionique qui a au moins l'une des propriétés telles qu'une conductivité ionique élevée, une faible réduction de la conductivité ionique à basse température, un bas point de fusion et une faible viscosité. L'invention a pour but de proposer un dispos...
An automatic feeder for infusing solid solutes into liquid solvents at an adjustable, predetermined, controlled rate to maintain an adjustable, predetermined, controlled concentration of solute in a solvent reservoir, the feeder including means for adjustably controlling the rate of infusion of solute into a circulatin...
A positive-working resist composition comprising (A) a quinonediazide compound, (B) an alkali-soluble resin, and (C) a solvent system comprising 2-heptanone, ethyl lactate and γ-butylactone in which the quinonediazide compound exhibits a very high solubility and which characteristics such as sensitivity, profile and c...
It has been discovered that cellulose acetate membranes, fabricated using nonaqueous solvent systems, can be used for the separation of polar solvents, especially ketone dewaxing solvents from dewaxed oil. The cellulose acetate membranes so prepared are of a reduced acetyl content and exhibit very good resistance to ke...
The invention relates to compositions containing at least one polyorganosiloxane-containing polymer, at least one volatile non-silicone oil, at least one alkylene polymer wax, at least one silicone film-forming agent and, optionally, at least one long-chain alcohol wax, at least one coloring agent, and/or at least one ...
Disclosed are an apparatus and a method for supplying a pulse to solvent extraction column (hereinafter, pulsed column). More particularly, the present invention relates to a low cost apparatus with a simple method for stably supplying a pulse to a pulsed column, which is employed as unit equipment in a solvent extract...
Process for insulating by impregnation an electric winding with isocyanurate and oxazolidone cycles resins, in which one wraps around the conductors a glass cloth and porous mica paper tape loaded with a quaternary ammonium salt catalyzing the condensation of the isocyanate and epoxy compounds into isocyanurate and oxa...
The present invention relates to a process for producing a cathode foil of a lithium-containing battery, comprising: (i) provision of a dry, solvent-free composition which comprises polytetrafluoroethylene, an electrically conductive, electrochemically inactive carbon material and an electrochemically active cath...
The present invention relates generally to in situ hydrate control during hydrocarbon production when applying a recovery method utilizing cyclic injection of light hydrocarbon solvents. Hydrate formation is limited by creating an energy reserve within a hydrocarbon reservoir adjacent to the wellbore. A heated solvent ...
The present disclosure relates, at least in part, to compositions comprising lignocellulosic biomass and an organic solvent wherein the lignocellulosic biomass comprises 35% or greater of lignin material. The present disclosure relates, at least in part, to compositions comprising lignocellulosic biomass and an organic...
In a device and method for fixing toner images on a carrier web, rinsing chambers from which a mixture of solvent vapor and air is drawn off are located before and after a fixing chamber. The mixture is passed through a condenser, the discharge of which is re-supplied to the rinsing chambers....
The present invention is directed to novel fluorinated dye stabilizers having both high quenching efficiency and solubility in halogenated solvents. These dye stabilizers have shown a significantly effect on improving the dye fastness in hostile photooxidation conditions....
In a two component extraction system for producing ammonium tungstate from aqueous alkali metal tungstate from aqueous alkali metal tungstate solution, the stripped organic is washed to form a wash solution which is mixed with concentrated ammonia solution to form an aqueous ammonia solution which is mixed with product...