299 results about "Hectorite" patented technology

This invention relates to a rubber composition which contains intercalated and at least partially exfoliated organophillic clay reinforcement formed in situ within the elastomer host from a hydrophilic clay. The invention particularly relates to an in situ modification of a hydrophilic clay to compatibilize the clay with a diene-based elastomer. The clay is converted from being hydrophilic in nature to being more hydrophobic in nature and therefore more compatible with the elastomer by bulk blending the elastomer host with a smectite clay, preferably a montmorillonite or hectorite clay, and a hydrocarbyl onium salt, such as for example a quaternary ammonium salt, and particularly in the absence of water addition to the elastomer host. Therefore, such in situ procedure of intercalation and at least partially exfoliation relies upon a bulk blending thereof with an elastomer host at an elevated temperature and under high shear conditions in contrast to pre-intercalating the clay in an aqueous based medium and in contrast to simple low viscosity melt processing of a thermoplastic polymer. The invention also relates to articles of manufacture, including tires, having at least one component comprised of such rubber composition. Such tire component may be, for example, a tire tread.

The invention relates to the technical field of papermaking sizing agents, in particular to stable ASA (Alkenyl Succinic Anhydride) papermaking sizing emulsion. The stable ASA papermaking sizing emulsion comprises deionized water, ASA, hectorite and urea, wherein the mass ratio of the ASA to the deionized water is 1:(0.8-4); the mass ratio of the hectorite to the ASA is 1:(20-200); and the mass ratio of the urea to the hectorite is 1:(2-100). The preparation method comprises the following steps of: dispersing the hectorite with the deionized water to obtain a hectorite colloid; dissolving the urea in residual deionized water to prepare an aqueous solution of the urea; mixing the hectorite colloid with the aqueous solution of the urea; adjusting the pH value to be 5-8; and then uniformly mixing the mixture with the ASA to obtain the ASA papermaking sizing emulsion. According to the invention, the consumption of an emulsifying agent is little; no traditional surfactant is used; the emulsion has high concentration, favorable stability and high sizing efficiency; the preparation method is simple in process; the emulsification cost is low; and the sizing efficiency of the obtained emulsion can be greatly increased.

The invention relates to an ecological environment-friendly soil remediation method. The ecological environment-friendly soil remediation method comprises the following steps: uniformly scattering a soil remediation agent on the surface of heavy metal polluted soil; then carrying out soil ploughing to sufficiently and uniformly mix the soil remediation agent and the heavy metal polluted soil; balancing for 6 to 8 days to finish a soil heavy metal remediation process. The soil remediation agent is prepared by mixing the following components in parts by weight: 55 to 65 parts of modified hectorite, 20 to 30 parts of organic fertilizer, 10 to 20 parts of humic acid and 1 to 3 parts of a microbial agent. The soil remediation method involved in the invention is suitable for remediating the heavy metal polluted soil and has the advantages of low cost, ecological environmental protection, short remediation period, good remediation effect, high remediation efficiency and the like.