WO2007071960A1 – Dispersant for reducing viscosity of solids
US20080317960A1 - Dispersant for Reducing Viscosity of
The invention provides a dispersant for an aqueous dispersion of negatively charged or chargeable solid particulates which comprises a compound having an anchoring moiety linked to a polymeric hydrophilic moiety, the anchoring moiety containing at least one basic group and having an overall basicity and the polymeric moiety having a lower affinity for the particulate surface than the anchoring
Dispersing agents - Functionality & Performance
Dispersants deflocculate solids and thus significantly reduce the viscosity of a dispersion or paste. As a result of this effect, solid loading – the amount of dispersible powdered material – can be increased accordingly. The dispersion phase is possibly the most time- and energy-consuming stage of the production process.
WO2006067453A1 - Dispersant for reducing viscosity
There is a need for a dispersant additive for an aqueous dispersion of alumina particles, specifically of boehmite, especially at high concentrations of solids, that can reduce viscosity and the tendency to increase viscosity and to gel or to form a yield stress material following a period of high shear stress,...
Dispersant for reducing viscosity of particulate solids
The dispersant can reduce the viscosity of an aqueous dispersion of positively charged or chargeable solid particulates and can reduce the tendency of the resulting dispersion to form a gel or a yield stress material.
DISPERSANTS PRODUCT GUIDE
application of dispersants because the mechanical resistance of the oil prevents small droplets from breaking away under 5 Figure 3: Relationship between oil viscosity and sea temperature for 10 oils.
Papermaking dispersant - PAM - CHINAFLOC
Used as a dispersant is generally the sodium, because of a molecular chain containing a carboxyl group on the cellulose fibers are negatively charged dispersion effect, and when a relative molecular weight of about 3,000,000, to improve the slurry viscosity, is conducive to the fiber suspension, so is a long fiber efficient dispersant
Acacia concinna : A natural dispersant for stabilization
The present study involves the stabilization and rheological behavior of a fly ash samples in the presence of a low cost natural dispersant saponin isolated from a plant Acacia concinna.The critical micellar concentration of the surfactant was measured and it was found to be 0.019g per cc.
Dispersant | GEO Specialty Chemicals
Highly active dispersant for high energy surface particles; Particularly useful as a means of controlling viscosity of clay slurries which tend to thicken with time and temperature extremes; Synergistic effects when use with Hyonic® foaming agents in gypsum wallboard; Disperses over a broad pH range and can be used with anionic or nonionic
TM Flexisperse™ 133N
that reduce water solubility. The ideal properties found in hydrophobically modified dispersants effectively reduce the viscosity of a high solids loading dispersions, while reducing the water sensitivity of the dried coating contributing to improvement in scrub resistance , water spotting, wet rub, etc. Dispersant mechanism, properties and use
TF-904 - TF-904 Factory, aqueous dispersant, viscosity
TF-904 aqueous dispersant . Properties: The main composition of dispersant TF-904 is anion polymer. It can adsorb on surface of microparticles resulting in static repulsion, resulting in disperse and preventing sedimentation and coarse turn-back. dispersant TF-904 is little foaming, innocuous, non-corrosiveness and non-hazardous.
DISPERSANTS TECHNOLOGY AND BENEFITS
viscosity of a highly pigmented system (e.g. millbase or high-solids coating) are the forces of attraction between pigment particles. By reducing these forces, Solsperse™ Hyperdispersants lower the contribution to the total viscosity associated with the pigment, thereby producing systems of either lower viscosity or of higher pigment
Olin - Low Viscosity Epoxy for Ultra-High Solids
• Solvents reduce viscosity but increase VOC and reduce volume solids • Pigment volume concentration (PVC) has a high impact on paint viscosity at a given solids level • Not all pigments are equal: Size, shape, and oil absorption play a role in viscosity • Dispersants affect viscosity Hardener Volume Solids • Low viscosity hardeners
A novel prediction method for preparation and
determining the optimum viscosity of suspensions. Usually this means the minimum viscosity for the maximum solids A novel prediction method for preparation and microstructure developing of zirconia ceramics by colloidal processing H. Sarraf*, J. Havrda Department of glass and ceramics, Institute of Chemical Technology (ICT) Prague,
A Guide to Formulating Polyurethane Dispersions for Use
Emulsifiable isocyanates are typically used at levels of 1-5%. In the case of epoxysilanes, the pot life is pH dependent. For one-pack stability, the pH of the system must be between 6 and 8.5. Epoxysilanes will usually be used in levels of 0.5-3%, based on the resin solids of the system.
Viscosity of kaolin slurries: Effects of dispersant
The results revealed that the viscosity of kaolin slurries significantly decreased with decreasing solid content or with increasing pH and dispersant content. It was worth noting that urea-intercalation was proven to be an efficient method for promoting the dispersion of highly concentrated kaolin as compared with adding dispersant.
Additives for Adhesives and Sealants - BASF
Waterborne adhesives and sealants can benefit from wetting agents, dispersants and our viscosity and rheology control product lines, as well as defoamers and biocidal control during manufacture. Dispersing agents are used to wet and stabilize pigments and other
Dispersant storage, maintenance, transport and testing
6— Dispersant storage, maintenance, transport and testing Many surfactants are high-viscosity liquids and/or solids. They need to be blended into a low-toxicity substance (a solvent) to produce a dispersant of relatively low viscosity that can be easily sprayed. The solvent also helps the surfactant to penetrate the spilled oil. Some key physical
Synthesis and Processing of Nanostructured Materials
PAA concentration effect on the suspension viscosity at 30 vol% A1203 solids loading. Based on the PAA concentration effect on the suspension stability, PAA concentration of 2.00 wt% of A1203 was used for the pH effect study while the solids loading was kept at 30. ~01%. pH was studied from 5.5 to 10.5.
SolSperSe M Serie S - Lubrizol
dispersant and dispersant design that can be tailored to match the requirement of a colorant scheme. High resin systems are used where minimizing the VOC of the colorant system is important in meeting current coating industry targets to reduce solvent emissions to the environment. Low resin solids or resin free pigment concentrates offer the
Improved Durability through Reactive Dispersant Technology
The viscosity at a 10 s-1 is plotted against the dispersant dosage, showing dispersant efficiency in viscosity suppression. A strong spreading of results was found. Dispersant 4787 already reached low viscosity at a dosage of 50% active dispersant on pigment (DOP) while the commercial benchmarks needed either a higher dosage or did not even
rheduce - Schlumberger
by an elevated content of colloidal solids. It reduces viscosity and gel strengths through the action of macromolecules that disperse solids in the mud without the need for dilution or changing the synthetic-to-water ratio when volume increases are undesirable. Typical Rheduce dispersant treatments range from 0.1 to 0.2 lb/bbl (0.3 to 0.6 kg/m3). Pilot testing is recommended prior to treating the system.
Additives for Adhesives and Sealants
Forms low viscosity pre-mixes in water, which thicken on addition to formulations. LAPONITE-SL 25. Ready-for-use concentrated aqueous dispersion of layered silicate rheological additive for water-borne systems. Used in highly filled surface coatings. Synergistic benefits when used in combinations with polymer based co-thickeners.