摘要:
A dense cleaning fluid for removing contaminants from a substrate and a method comprising same is disclosed herein. In one embodiment of the present invention, the dense cleaning fluid comprises a dense fluid and at least one acetylenic diol or acetylenic alcohol surfactant.
摘要:
A dense cleaning fluid for removing contaminants from an substrate and a method comprising same is disclosed herein. In one embodiment of the present invention, the dense cleaning fluid comprises a dense fluid and at least one acetylenic diol or acetylenic alcohol surfactant.
摘要:
A method for removing contaminants from an article is described herein. In one embodiment, there is provided a method comprising loosening at least a portion of the contaminants by treating the article with a treatment method involving a processing fluid and/or dense processing fluid to provide a partially treated article comprising loosened contaminants; contacting the partially treated article with a dense rinse fluid comprising a dense fluid, optionally a co-solvent, and optionally an entrainer to remove liquid-based contaminants; and removing at least a portion of the loosened contaminants by exposing the partially treated article with at least one exposure method to provide a treated article wherein the selection of the at least one exposure method depends upon whether the loosened contaminants are wet or dry.
摘要:
This invention describes an improvement in a process for purifying a nitrogen trifluoride (NF3) stream containing unreacted F2, HF, and nitrogen oxides from an NF3 reactor wherein the F2, and HF are removed and then the nitrogen oxides removed by adsorption. The improvement in the process resides in selectively removing the F2 from said NF3 stream without generating oxygen difluoride, removing HF and then removing said nitrogen oxides by adsorption. Further purification can be effected as desired.
摘要翻译:本发明描述了一种从NF 3纯化含有未反应的F 2 H 2,HF和氮氧化物的三氟化氮(NF 3 H 3)流的方法的改进, / SUB>反应器,其中除去F 2 H和HF,然后通过吸附除去氮氧化物。 该方法的改进在于从所述NF 3 N流中选择性除去F 2 O而不产生二氟化氧,除去HF,然后通过吸附除去所述氮氧化物。 可以根据需要进一步纯化。
摘要:
The overall performance of water-reducible polymer dispersions, more specifically alkyd dispersions, can be substantially improved by utilizing resins derived from acidolysis reaction products of polyalkylene terephthalates and polyalkylene naphthalates. According to this invention, polymer dispersions can be produced from low acid value polymers and yet have good water dispersibility. When an aqueous coating composition is formulated using the dispersion of this invention, a final coating is formed that has good hydrolytic stability, and when blended with a latex, exhibits improved gloss and wet adhesion.
摘要:
This invention relates to fatty acid modified alkyd resins and the use thereof in formulation of high solids interior and exterior paints capable of curing at ambient temperatures without the use of appreciable amounts of solvent. More specifically, the invention relates to high solids alkyd coatings derived from fatty acid oil modified alkyd resins having low viscosities capable of forming finishes that have good physical characteristics such as high gloss, resistance to humidity, excellent adhesion and a good hardness. These oil modified alkyd resins have number average molecular weights of less than about 6,000 and are derived from the polymerization of drying oil fatty acids, dibasic aromatic acids, polyols, at least one unsaturated monocarboxylic acid and an unsaturated monohydric alcohol.
摘要:
This invention relates to high solids alkyds, non-aqueous dispersions, and coating compositions containing those alkyds and non-aqueous dispersions, having non-volatile materials contents greater than about 75% NVM, with very low volatile organic contents of less than 305 g/l, which exhibit excellent stability, viscosity and tack-free and dry times when formulated as air dry coating compositions.
摘要:
A process for producing an isotopically enriched compound of a desired isotope includes (a) providing a cryogenic reaction zone containing a catalyst adapted to catalyze an isotope exchange reaction at a cryogenic reaction temperature, (b) feeding to the cryogenic reaction zone an enriched mixture comprising at least a compound containing the desired isotope, wherein the enriched mixture is enriched in the desired isotope above a natural abundance of the desired isotope, (c) reacting the enriched mixture in the cryogenic reaction zone thereby forming a resulting mixture containing the isotopically enriched compound, and (d) separating the resulting mixture into an enriched product which is enriched in the isotopically enriched compound and a depleted product which is depleted in the isotopically enriched compound.
摘要:
A system for the purification and recycle of impure argon is disclosed herein. The system of the present invention can produce very high purity argon, i.e., about 1 ppb or less of impurities. In one embodiment, a cryogenic separation apparatus is used to remove the nitrogen, hydrocarbon, and hydrogen impurities from the argon stream. A catalyst bed is then operated at ambient temperature to remove hydrogen, oxygen, and carbon monoxide impurities to provide the purified argon product.