Cleaning composition of dibasic ester, hydrocarbon solvent, compatibilizing surfactant and water

A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises dibasic ester, a hydrocarbon solvent, a compatibilizing surfactant and water.

Copper-modified high purity adipic acid

A purified form of adipic acid containing 0.1 to 2.0 ppm of copper in the form of an ionic copper compound that is useful in the formation of nylon polymer, nylon yarns, and polyester polyols of low color.

Rapid fixation of agents on flexible substrates

Non-aqueous process for improving a functional property of flexible, natural and synthetic, organic polymeric substrates, such as textiles, film and paper, for example, polyethylene terephthalate or cotton fabric, by applying thereto an agent other than a dye, which agent is capable of imparting the desired improved functional property to the substrate, which process comprises: 1. applying said agent to the substrate from a liquid medium; 2. optionally, drying the substrate to remove the liquid while substantially retaining the agent on the substrate; and 3. contacting the agent-treated substrate with a fluorocarbon fluid at a temperature and for a time sufficient to effect fixation of the agent on the substrate, said fluorocarbon having an atmospheric pressure boiling point of at least 25° C., a fluorine to carbon atom ratio of at least 1.5 and a solubility parameter of not greater than 7.0 and being selected from the group consisting of saturated fluorocarbons and perfluorotrialkyl and ...

Drying of water-wet solid materials

Process of drying water-wet solid materials, which process comprises, in a system, A. forcibly contacting the water-wet solid material with circulating vapor of a fluorocarbon having a fluorine to carbon atom ratio of at least 1.0 and a boiling temperature of less than about 80° C at atmospheric pressure, said fluorocarbon vapor being at a temperture above about 100° C and said contacting being carried out in the absence of a substantial amount of a noncondensable gas, such as air or nitrogen, B. passing the resulting mixture of fluorocarbon vapor and water vapor from step (a) through a zone maintained at a temperature less than 100° and at least 1° C above the atmospheric pressure boiling temperature of the fluorocarbon to condense a substantial portion of the water vapor but not a substantial portion of the fluorocarbon vapor and, preferably, so that the partial pressure of the water in the remaining vapor mixture is less than about 25 cm of mercury, C. heating the vapor mixture from ...

Process for drying porous materials

Process, suitable for drying water-wet porous materials, for example, textiles, which comprises forcing a displacement liquid through the open interstices of the water-wet porous material to remove the water, the displacement liquid consisting of a water-immiscible, normally liquid organic solvent having a surface-active agent dissolved therein, said displacement liquid having at 25°C. an interfacial tension versus water of no greater than about 10 dynes cm.-1 at 25°C., a density of at least about 1.25 grams cm.-3 and an advancing adhesion tension versus platinum which is positive, and recovering porous material whose open interstices are substantially free of liquid water.

Cleaning composition of hydrocarbon component, surfactant and multibasic ester additive

A cleaning composition is disclosed which is suitable for cleaning substrates and particularly for cleaning flux residues from a printed circuit board. The cleaning composition comprises a hydrocarbon component, a compatibilizing agent, a multibasic ester additive, and optionally water. The multibasic ester may be an alkanoic acid ester of a diol or polyol, an alkanoic acid ester of a hydroxy alkanoate alkyl ester, or and alkyl ester of a compound containing two or more carboxylic acid groups and one or more hydroxyl groups which are optionally esterified with an alkanoic acid group. The cleaning composition may be used as a solution or as an emulsion or dispersion to clean a substrate.

Process for recovering volatile organic liquids

Process for substantially quantitatively removing and recovering a volatile, organic, water-immiscible wetting liquid from a solid material which is wet therewith, which process comprises intimately contacting the solid material first with the superheated vapor of a water-immiscible, organic stripping liquid and thereafter with dry steam, said contacting taking place in an environment substantially free of noncondensable gas, condensing the mixture of organic vapor and steam to form a two-phase liquid mixture consisting of liquid organic phase and liquid water phase, and separating the liquid organic phase and the liquid water phase.

Textile treating dispersion concentrate

Stable concentrated dispersion of dye and/or textile finishing agent in liquid or solid media, suitable for dilution with a fluorocarbon to form a stable, non-aqueous textile treating bath.

Migration-free textile drying

Textile drying process comprising continuously contacting a moving textile web, which is wet with a first fluorocarbon liquid having a textile agent dispersed therein, with the superheated vapors of a second fluorocarbon liquid, the superheated vapors being at a temperature such that no substantial amount of second fluorocarbon liquid condenses on the web, to evaporate substantially all of the first fluorocarbon liquid from the web in no more than seven seconds without causing substantial migration of the textile agent on the web, said first and second fluorocarbon liquids being selected from fluoro and chlorofluoro substituted aliphatic and cycloaliphatic hydrocarbons, ethers and tert.-amines wherein the ratio of hydrogen atoms to halogen atoms is 0 - 0.2, the first fluorocarbon liquid having a boiling point of 20° - 110° C. and the second fluorocarbon liquid having a boiling point of 20° - 220° C.

Process for continuously transferring heat to a moving band

Process for continuously transferring heat to a moving band of solid material, for example, a textile, a film, particles, or any shaped or unshaped article, the band preferably comprising a disperse dyeable synthetic polymer, for example, a polyester or polyamide, said process comprising passing the band through a substantially enclosed purging-drying region containing the superheated condensable vapor of a liquid having an atmospheric pressure boiling point of less than 120° C., thence immediately thereafter through a substantially enclosed, heat-transfer region containing the superheated condensable vapor of a fluorocarbon having a fluorine to carbon atom ratio of at least 1.5, a solubility parameter of not more than 6.5 and a molecular weight of at least about 300, the pressure in the heat transfer region being no greater than that in the purging-drying region, thence immediately thereafter through a substantially enclosed purging region containing dry steam, the pressure in the purging ...

Paint remover

A low toxicity paint remover composition containing C1 to C4 dialkyl esters of C4 to C6 aliphatic dibasic acid, an activator, a thickener, a surfactant and at least one other organic nonhalogen-containing solvent.

ESTER BASE OIL FOR LUBRICATING COMPOUNDS AND PROCESS FOR MANUFACTURING ESTER BASE OIL FROM A BYPRODUCT OF AN ORGANIC REACTION.

Esta solicitud se refiere a un proceso para hacer reaccionar un sub-producto de una reacción orgánica para formar un aceite base de lubricante de éster y la composición del éster complejo obtenida por medio del proceso. El material del sub-producto es un residuo no volátil de la reacción de oxidación de ciclohexano para preparar productos intermedios para la síntesis de ácido adípico.

Polymerization of chloroprene

Polymerization of 1,3-diene hydrocarbons

Preparation of silane

Preparation of silane

Purification of silicon hydrides