Foamed frothing

The product contains 12.6% phosphoms and has an OH number in the 450 mg KOH/g range. Fyrol 6 is used to impart a permanent Class 11 E-84 flame spread rating to rigid foam for insulating walls and roofs. Particular advantages are low viscosity, stabiHty in polyol—catalyst mixtures, and outstanding humid aging resistance. Fyrol 6 is used in both spray foam, froth, pour-in-place, and slab stock. 

Schaum, m. foam, froth scum lather (Brewing) head. 

S = effective tray spacing, distance between top of foam, froth, or bubbles, and tray above, in. 

This is the case with diameter determination. The relation of Equation 8-250 for the perforated tray or sieve tray with downcomers can be used for the plate without downcomers. Generally, the liquid level and foam-froth height will be higher on this tray, hence the ralue of h., clear liquid on the tray, may range from 1-in. to 6-in. depending on the service. 

An ordinary 200-cc. distilling flask with a large-diameter side arm placed well down on the neck gave the best results. There was no foaming, frothing, or spattering. 

Finding 3-5. Freezing mustard munitions to avoid problems with foaming/frothing of agent is not currently planned for any of the baseline facilities in the continental United States. 

A dispersion of gas bubbles in a liquid, in which at least one dimension falls within the colloidal size range. Thus a foam typically contains either very small bubble sizes or, more commonly, quite large gas bubbles separated by thin liquid films. The thin liquid films are called lamellae (or laminae ). Sometimes distinctions are drawn as follows. Concentrated foams, in which liquid films are thinner than the bubble sizes and the gas bubbles are polyhedral, are termed polyederschaum . Low-concentration foams, in which the liquid films have thicknesses on the same scale or larger than the bubble sizes and the bubbles are approximately spherical, are termed gas emulsions , gas dispersions , or kugelschaum . See also Evanescent Foam, Froth, Aerated Emulsion. 

Mineral flotation is a method for selective separation of mineral components out of polymineral dispersions of ground ores in water (ca. 5-35 vol.% of the solid) by using dispersed gas (usually air) bubbles. The method consists in the different adhesion of hydrophobized and hydrophilic mineral particles to an air bubble. Hydrophobized mineral particles adhere to the air bubble and are carried out as a specifically lighter aggregate to the surface of the mineral dispersion where they form a foam (froth) layer. This foam, called concentrate, is mechanically removed (Fig. 1A). A mineral is hydrophobized by adsorption of a suitable surface-active compound (surfactant, collector) on the surface of the mineral component to be flotated. All other nonhydrophobized particles remain dispersed in the mixture (Fig. IB). 

Various methods are employed to estimate and compare foam stability with respect to foam column destruction. Most often they are reduced to determination of the lifetime of the foam column (or part of it) up to its complete disappearance. Several earlier works [13,14] dealing with the stability of flotation foams (froths) involved the use of a coefficient of stability... 

Astromid. [Alco] Alkyl sulfosuccina-mates emulsifier for polymerization foaming, frothing agent for elastomeric compds. 

The flotational separation and enrichment of minerals is one of the most broadly used technological applications that utilizes the control of wetting. Flotation is usually classified as foam (froth), oil, or film flotation, and is based on the difference in wetting of the valuable (flotated) mineral that is to be extracted or concentrated, and the gangue (a barren rock). In froth and... 

Weak foaming (frothing) agents ensure the formation of a moderately stable froth that is capable of holding mineral particles in it (sometimes the collectors themselves can act as such agents). In order to make further processing easier, the froth layer should contain as little water as possible. 

Batch Treating In oil production or processing, the process in which a foam, froth, or emulsion is collected in a tank and then broken in a batch. This process is as opposed to continuous or flow-line treating. 

Breaking The process in which a foam, froth, or emulsion separates. Usually coalescence causes the separation of a macrophase, and eventually the formerly dispersed phase becomes a continuous phase, separate from the original continuous phase. 

Treater A vessel used for the breaking of foams, froths, or emulsions, and the consequent removal of phases such as solids and water (BS W). Foam or emulsion breaking may be accomplished through some combination of thermal, electrical, chemical, or mechanical methods. 

Chem. Descrip. Acrylic latex, heat-reactive Uses Acrylic for upholstery, drapery, mattress ticking coatings, foam/froth backcoatings... 

Fine dispersions of metals, metal oxides, and halogenides in soils and ground water, etc. blood paint and ink Silica gel iron oxide (FejO,) gel Milk and other dairy products, sauces, globules of alimentary fats in the duodenum, crude oil Beer foam, froth in a bioreactor, (shaving) soap, whipped cream, foam concrete Smokes, dust, clouds and fog, sprays... 

The value of the critical micelle concentration (CMC) is an important parameter in a wide variety of industrial applications involving adsorption of surfactant molecules at interfaces, such as foams, froths, emulsions, suspensions, and surface coatings. It is probably the simplest means of characterizing the colloid and surface behaviour of a surfactant solute, which in turn determines its industrial usefulness. Many industrial processes are also dynamic processes in that they involve a rapid increase in interfacial area, such as foaming, wetting, emulsification and solubilization. First, the available monomers adsorb on to the freshly created interface. Then, additional monomers must be provided by the breakup of micelles. Especially when the free monomer concentration (i.e. CMC) is low, the micellar breakup time or diffusion of monomers to the newly created interface can be rate-limiting steps in the supply of monomers, which is the case for many nonionic surfactant solutions (3). 

Since then, there have been many publications concerning the effect of particles on the formation and stability of foams, froths, and emulsions. Here we are mainly concerned with the destabilizing effect of particles on foams and froths. Practical examples inclnde the effect of hydrophobed mineral particles and collector precipitates on the stability of mineral flotation froths [77, 143], Another is the nse of wax [144] to control the foam of detergent formulations for automatic washing machines. 

Uses Foaming, frothing, emulsifying agent Properties Paste 100% cone. 

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