摘要:
A protein-polysaccharide complex is used as a non-toxic and sustained release carrier for insecticides, herbicides, foliar nutrients and mixtures thereof. Methods for using a solution, solid or flowable impregnated protein-polysaccharide complex as a delivery agent for the control of plant populations and insect populations and as a preservative for cut flowers are described.
摘要:
A bituminous binder emulsion is provided and is formed from a dispersion of an organic phase consisting of a bituminous binder in an aqueous phase incorporating an emulsifying system made up of one or more emulsifying agents, a water-soluble thickener and optionally, a pH regulating agent. The thickener which may be used to control the viscosity of the emulsion incorporates at least 40% scleroglucan by weight. The emulsion obtained may be used for road building applications, water-proofing in civil engineering or construction works, or for industrial purposes.
摘要:
A composition and method for reducing the loss of liquids by seepage through permeable ground surfaces is shown. The composition comprises an aqueous emulsion of asphalt including a cationic emulsifier, a nonionic surface active agent and elastomer solids. The compositions are particularly adapted for application to agricultural soils. After application to the ground surface, the surface is flooded with water to force the aqueous emulsion downward into the subsurface. A semi-permeable fluid barrier is created several inches below the surface. The composition and method are useful to create subsurface liquid barriers which permit the surface soil to be used for agricultural purposes.
摘要:
A soil or aggregate stabilizing agent is formed by mixing asphaltic emulsion, lignosulfonate and water. The agent is considered useful in a variety of applications, particularly road construction.
摘要:
A quick hardening cement-asphalt composition used as a grout for a ballast-filled track structure comprising(a) 100 parts by weight of a cement composition prepared by adding to portland cement about 10 to 50% by weight of a mixture of a calcium aluminate-series mineral and calcium sulfate in a weight ratio of about 1:0.3 to 1:3; about 0.05 to 10% by weight of an inorganic salt, and about 0.05 to 3% by weight of at least one of an organic carboxylic acid, an organic hydroxycarboxylic acid and a salt thereof, and(b) about 30 to 400 parts by weight of an asphalt emulsion containing about 0.2 to 8% by weight of a polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, sorbitan alkyl ester, polyoxyethylene sorbitan alkyl ester or sucrose fatty acid ester nonionic emulsifier and about 0.05 to 2% by weight of a multivalent metal chloride, calculated as the multivalent metal ion.
摘要:
A base oil consisting of asphalt and an aromatic oil is dispersed in an aqueous nonionic emulsifying solution to form an oil-in-water emulsion which is useful as a soil control agent.
摘要:
A method of treating porous soils to increase their waterholding capacity comprising applying an asphalt-in-water type emulsion having a median asphalt particle size of from about 0.4 to 1.0 microns to the surface of the soil to be treated. Preferably, the soil is prewet and the submicronic emulsion is applied in a dilute form having from about 1 to about 20 percent solid residue.
摘要:
A composition for reducing the loss of liquids by seepage through permeable ground surfaces is shown. The composition desirably comprises an aqueous emulsion of asphalt including a cationic emulsifier, a nonionic surface active agent and elastomer solids. The compositions are adapted for spray, roller, brush or flooding, etc., application, on natural and man-made beds of rivers, ponds and other water impoundment and transfer structures. The stability of the emulsion is controlled so that penetration of the soil is achieved, and a flexible water impervious mass is obtained.