摘要:
Methods for reducing or preventing topsoil erosion with hydrogels are described. Upon treatment, a plot of soil may exhibit improved water retention capacity, reduced topsoil erosion and improved aeration properties for plant growth.
摘要:
This invention relates to a method of seepage control which comprises contacting a soil surface with a composition comprising anionic copolymers and a surfactant. This invention provides a method of seepage control for irrigation ditches, drainage ditches, farm ponds, feeder canals, golf course water features, park ponds and lakes, lagoons, and the like.
摘要:
The invention concerns novel high molecular weight polymers, prepared in a dispersion containing practically no oil phase. The monomers are first polymerised in a water-in-oil emulsion, including, in a non-exclusive example, a specific hydrophobic monomer. The resulting emulsion is dried for example by azeotropic evaporation or by spray drying; a coarse powder is obtained which can be re-dispersed in an aqueous medium wherein the water soluble polymer is not soluble, by applying a shearing sufficient to obtain a fine dispersion. The resulting dispersion may be cationic, anionic or non-ionic, or amphoteric and is useful for treating water, in the paper-making industry, the oil and parapetrolic industry, for ore and mineral processing, conditioning soils and foodstuff processing and packaging.
摘要:
The invention relates to a method for reducing the availability of heavy metals nutrients in substrates, such as soils. The inventive method is characterized in that the substrates are treated with cross-linked polyacrylates or polymethacrylates. The poly(meth)acrylates can be worked into the soils.
摘要:
L'invention concerne un liant pour améliorer la stabilité et la cohésion d'un matériau granulaire. Le liant comprend au moins un composé siloxane et au moins un polymère vinylique. De préférence, le liant est sous forme de solution aqueuse.
摘要:
The disclosed invention describes a novel approach to the utilization of the fine mineral matter derived from coal and/or coal refuse (a by-product of coal refining) to convert a non-biodegradable plastic into a biodegradable plastic. The fine mineral matter could also be based on volcanic basalt, glacial rock dust deposits, iron potassium silicate and other sea shore mined deposits. The conversion of the non-biodegradable plastic into biodegradable plastic in soil further increases nutrients availability in soil with the transition metals released as a result of biodegradation of the biodegradable plastic.
摘要:
The invention resides in a soil stabilizing composition comprising: a first polymer that comprises an acrylamide monomer; a second polymer that comprises an acrylate monomer; and a solvent; wherein the first polymer and second polymer directly cross-link to stabilize a soil substrate. The invention also resides in a method of stabilizing a soil substrate including the steps of: providing a soil stabilizing composition comprising a first polymer that comprises an acrylamide monomer, a second polymer that comprises an acrylate monomer, and a solvent; treating the soil substrate with the soil stabilizing composition; and curing the soil stabilizing composition; wherein the first polymer and second polymer directly cross-link to stabilize the soil substrate.