摘要:
A process for recovering bitumem from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are water soluble polyethers prepared by the reaction between certain diepoxides and poly(ethyleneoxy) glycols. To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 160.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.
摘要:
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are water soluble salts of polymers prepared by the reaction between certain polyoxyalkylene diamines with diepoxides. To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 160.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.
摘要:
The use of methylene azelaic acid having the formula CH.sub.2 .dbd.C--[(CH.sub.2).sub.3 --COOH].sub.2 or an alkali metal salt thereof in glycol and water based automotive antifreeze formulations is described. Unlike natural dicarboxylic acids such as sebacic acid, methylene azelaic acid does not form a precipitate and drop out of solution, rendering the antifreeze unprotected against corrosion. The methylene azelaic acid component should be present in an amount of from 1.5 to 4.5 wt. % based on the glycol component.
摘要:
A process in which a dialdehyde is reacted with a polyoxyalkylene glycol to form a dialdehyde glycol condensate which is alkoxylated with propylene oxide, butylene oxide or mixtures thereof and the resulting product is then catalytically aminated to provide, for example, a tetramine is disclosed. These compounds are useful as curing agents for epoxy resins and for reaction with isocyanates to prepare polyurea elastomers and to manufacture articles, such as automotive body panels by reaction injection molding.
摘要:
A corrosion-inhibited antifreeze composition is disclosed. Specifically, the antifreeze composition comprises a major portion of a liquid alcohol freezing point depressant and a minor portion of at least one hydroxyl-substituted aromatic carboxylic acid having the hydroxyl radical disposed proximate to the carboxylic radical. The above described acid is employed as a corrosion inhibitor. Other conventional corrosion inhibitors may be employed in conjunction with the acids.In another embodiment, the present invention relates to a process for inhibitig the corrosion of metals present in the cooling system of an internal combustion engine which comprises intimately contacting the metal surface to be inhibited against corrosion with the antifreeze composition described above. Most preferably, the target substrate is high lead solder.
摘要:
This invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers and/or high molecular weight polyols, a chain extender, a polyisocyanate, a chloro and/or isocyanate silane coupling agent, and untreated filler material. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
摘要:
A water base hydraulic fluid is disclosed. The fluid comprises 40 wt % of an amphoteric surfactant of the formula:CH.sub.3 (CH.sub.2).sub.5 --CH(CH.sub.3)--NHCH.sub.2 CH.sub.2 COOHand 10 wt % polypropylene glycol in water.The diluted hydraulic fluid is noted for its good wear characteristics, anticorrosiveness and non foaming nature.
摘要:
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are polyamine salts prepared by contacting poly(ethyleneimines) with organic or inorganic acids. The polyamines have a molecular weight of at least 1,000. To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 160.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.
摘要:
A dicyclopentadiene derived ethoxysulfonate alone or combined with a petroleum sulfonate surfactant is dissolved in water to form an effective surfactant fluid that is stable in high salinity and/or high temperature environments. The surfactant fluid is injected into an underground petroleum-containing reservoir in an enhanced oil recovery process.
摘要:
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are combinations of chemical agents comprising(a) poly(amidoamine) or poly(ester-amine) salts, and(b) polycarbonates.To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 160.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.