摘要:
A method and apparatus are provided for the recovery of a heavy oil, contained in an outcropping formation, without any significant adverse environmental impact. Broadly, the invention comprises indirectly heating an oil containing formation to reduce the viscosity of the oil therein and concurrently thermally insulating an upper portion of the well, extending into the formation, to eliminate any increased seepage of oil from the formation to the surface.
摘要:
An improved wet strength binder is prepared by a process in which interaction between an olefinic carboxylic acid monomer, such as itaconic acid, and a cross-linker, such as MAGME, is minimized.
摘要:
Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group conjugated with the olefinic linkage, which is reacted with a hydroxyalkyl ester of an olefinically unsaturated carboxylic acid. The product of said reaction is admixed with a non-formaldehyde containing latex carrier to produce a binder composition which will reach substantially fully cured wet strength in 8 seconds or less.
摘要:
A foam barrier system which is liquid impermeable and gas permeable is prepared by coating a polymeric, microporous foam upon a substrate, applying a composition having liquid repellency properties to the foam coated upon the substrate, and curing.
摘要:
A method is provided for removing heavy metal ions from an aqueous solution to yield a less contaminated aqueous effluent. The method comprises coprecipitating the heavy metal ions with a carrier precipitate which is formed in situ within the aqueous solution.
摘要:
An alkaline supplement for ruminant feeds is a fluid suspension comprising the components: about 20 to about 40 percent by weight water; about 2 to about 10 percent by weight sodium carbonate; about 2 to about 10 percent by weight calcium phosphate; about 10 to about 40 percent by weight molasses; about 5 to about 30 percent by weight limestone; up to about 15 percent by weight urea; up to about 5 percent by weight magnesium oxide; up to about 20 percent by weight dolomite; up to about 30 percent by weight fat; up to about 30 percent by weight protein meal; and a suspending agent.
摘要:
A method for treating a subterranean formation, or a well penetrating the formation, comprises injecting into the well an aqueous composition containing an aminopolycarboxylic acid and a water-soluble organosilicon compound. By use of the method, scale is removed from well equipment and/or openings in the formation, and fine particles within the formation are stabilized to prevent their subsequent movement, resulting in increased, more stable fluid flow through the formation and well.
摘要:
Hydroxy sulfonic acids in general and isethionic acid (2-hydroxy ethyl sulfonic acid) in particular can be prepared at 99+% purity and good yields by the selective oxidation of a precursor hydroxy mercaptan with hydrogen peroxide. The resulting product is pure enough to be used directly in the synthesis of sulfo-acrylic esters which are finding considerable use as stabilizers in producing vinylidene chloride copolymers used for FDA approved packaging films.
摘要:
An attrition resistant catalytic cracking catalyst is prepared by spray drying an aqueous slurry containing a molecular sieve having cracking activity, a clay such as kaolin, a silica sol and aluminum chlorhydroxide. The resultant catalyst has a high attrition resistance as compared to commercially available cracking catalysts.
摘要:
Condensate of steam derived from a geothermal brine is treated to enhance its utility as wash water for a brine filter. The condensate is sprayed into a tank in the presence of air to effect substantial oxidation of oxidizable sulfur species contained therein, and the pH of the condensate is adjusted to be within about 1.0 pH units of the pH of the brine. Such treatment substantially extends the life of the filter media used in the brine filter.