58results about How to "Suitable stability" patented technology

Rinse-aid composition comprising a polyalkoxylated trisiloxane surfactant and a non-ionic solubilising system having a cloud point above room temperature and an acidifying agent wherein the rinse-aid composition has a pH of from about 1 to about 4.5.

The invention discloses a light-curing adhesive and in particular relates to an ultraviolet-curing adhesive. The light-curing adhesive comprises the following components in percentage by mass: 10%-75% of matrix resin, 5%-50% of auxiliary resin, 10%-70% of activated monomer of acrylate, allyl compound or vinyl compound, 5%-15% of adhesion accelerator, 1%-10% of photoinitiator and 0.5-10% of auxiliary agent. The light-curing adhesive provided by the invention has fast curing capability, high bonding strength and low internal stress; an obtained cured layer is soft and has excellent hydrofluoric acid resistance.

The present invention relates to a stable cleaning composition including a borate salt and spores (bacterial or fungal), vegetative bacteria, or fungi. The composition can also include a polyol.

The invention discloses an organic selenium-supplementing feed additive and preparation and a using method thereof. The feed additive is prepared by the following steps of: adding chitosan with deacetylation degree of 70 to 100 percent into 0.5 to 2 volume percent of diluted acid with stirring at the temperature of between10 and 60 DEG C to obtain 0.5 to 10 percent acid solution of chitosan; adding solution of inorganic selenium into acid solution of chitosan, wherein the mass of inorganic selenium is 1/6 to 1/2 time that of the chitosan; and reacting for 1 to 12h and separating, washing the obtained solid matter by using distilled water for many times until selenium ions cannot be detected, and drying and crushing to obtain chitosan selenium chelate. The chitosan selenium serving as the feed additive is applied to feeds for livestock, poultry and aquatic animals and is effectively absorbed and utilized in the animals by using proper stability and dissolution performance thereof, so that disease resistance, production performance and meat quality of the animals are obviously improved. The chitosan selenium has the advantages of little toxicity, high biological availability, small addition amount, and capability of saving resources and protecting the environment, so that the feed additive is a safe and effective environment-friendly feed additive.

To provide a waterborne curable resin composition that is advantageous for environmental protection measures, can be applied without use of a film-forming assistant and can improve the dispersion stability of the emulsion, and also improve physical properties of the coat such as curability, durability, and stain resistance.

A waterborne curable resin composition having an acrylic emulsion produced by emulsion polymerization, wherein the acrylic emulsion contains a curable monomer and/or oligomer in emulsion particles.

The invention relates to water-resistant and high temperature-resistant polymer latex and a preparation method thereof. The latex provided by the invention mainly comprises the following polymerization monomers in percentage by weight: 0-80wt% of C5-C11 acrylic ester, 10-75wt% of C4-C5 aliphatic conjugated dienes, 15-80wt% of C8-C9 aromatic vinyl compounds, 0-10wt% of acrylonitrile, 1-5wt% of C3-C5 vinyl unsaturated carboxylic acid and 0.3-2.5wt% of C3-C4 unsaturated amide. The latex provided by the invention has proper particle size, viscosity and stability, and latex impregnated paper produced from the latex has excellent water resistance and high temperature resistance.

Disclosed are particulate compositions comprising particles of a blend of one or more polyvinyl alcohol polymers with one or more aliphatic polyester polymers, wherein such particulate compositions are useful, for example, as plugging agents for treatments applied to a subterranean formation traversed by the borehole of an oil or gas well.

A tool assembly includes a plurality of bolts each having a head and a shank extending from the head in an axial direction. The head of each bolt includes a groove opposed to the shank. The grooves of the bolts are of differing depths in the axial direction. The groove of each bolt includes a polygonal recessed section and a conical section extending from the recessed section away from the shank and having increasing diameters away from the shank. The conical section includes inner walls at an acute angle with the axial direction. The recessed sections of the bolts are of identical conicity but of different lengths in the axial direction. A driver includes an operative end having a first polygonal driving portion of a size corresponding to the recessed section of each bolt and a conical driving portion of a size and conicity corresponding to the conical section of each bolt.

A method for producing solid particles having a silica coating, by: dispersing the solid particles to be coated in an aqueous medium to produce a solid particle dispersion, adjusting the pH of the solid particle dispersion by a buffer system to produce a buffered solid particle dispersion, and adding an alkaline silicate solution to the buffered solid particle dispersion to form the silica coating on the solid particles during a coating period. The amounts of buffer system and alkaline silicate solution are selected such that the pH of the buffered solid particle dispersion before the addition of the alkaline silicate solution is at least 7.0 and after completion of the addition of the alkaline silicate solution is at most 11.0.

The invention pertains generally to an improved polymer composition which contains at least one polymeric polyphosphite or copolymeric polyphosphite additive containing no alkylphenols. Alkylphenol-free polymeric polyphosphites offer distinct advantages over conventional phosphite technology in rubbers and rubber compounds. Polymeric polyphosphites offer improved performance in regards to the prevention of color formation during high temperature processing and NOx aging.

Disclosed is a method for controlling loss circulation and simultaneously strengthening a weakened formation when drilling for oil. This invention relates to the permeable subterranean formation and natural and induced fractured formations that encounter severe losses and their treatment with a composition composed of long rigid organic fibre with different type of fibres selected from a category of organic or inorganic fibres along with different particle sizes that orientation of fibres and packing of the solids shows a good blockage effect to resist the loss and later the final set material develop required compressive strength to cure those losses and strengthening the structure.

A wheelchair frame comprises a base frame having a geometry that is structured and configured to be adjustable about a fixed pivot, wherein the base frame comprises a central frame and frame component that are adjustable via an angular adjustment.

The invention discloses trinuclear iron containing carbonyl cationic compounds as well as a preparation method and application thereof. A structural general formula of the compound is as shown in thedescription, wherein R is methyl or ethyl, Y is [I3] or [FeBr4] negative ions, two iron nucleuses at terminals are of positive bivalency, and the middle iron nucleus is of positive trivalency. The preparation process is simple in steps, and ionic compounds containing trinuclear mixed valence iron can be obtained. The prepared trinuclear iron containing carbonyl cationic compounds have appropriatestability and water solubility, are favorable for storage and transportation, are capable of controlling CO release, and can serve as catalysts to be applied during electrocatalytic reduction of proton hydrogen desorption.