Suspension agents

Emulsifiers (antispattering agent, dispersing agent, plasticizer, suspension agent)... 

The present authors proposed ferromagnetic supports, which can withstand liquefaction environment and conditions by their inherent nature or by protection with a carbon coating (141). Carbon has been recognized as an excellent support for FeS and Ni-MoS as described in the previous section (50). Very fine particles of ferrite are available. Coating with carbon can be performed through precipitation of polymers or pitches by the aid of suspension agents followed by carbonization (Ml). Catalyst deactivation by mineral and carbon deposition should be avoided for this approach to be feasible. 

Sometimes suspension agents are added to prevent oil paints from hardening in a metal tube. 

In Abaoud et al. s work [18], the details of using polyethylene oxide (PEO) as a suspension agent in the preparation of catalyst ink for PEMFC electrodes were... 

The combination of shear and impact action is sufficient to break the typically small crystals of active Ingredients to desired size and the high shear will activate suspension agents adequately for desired stability. As compared to the older ball mill or Attritors, their action has more impact and pulverization effects than a small media mill. 

Antifoam agents Flow agents Suspension agents... 

The polymer is commonly obtained from vinyl chloride with a peroxide initiator such as peroxydicarbonates, fert-butylperpivalate, benzoyl or lauroyl peroxide, acetyl cyclohexylsulfonyl peroxide, or azobis(2,4-dimethylvaleronitrile). The polymerization can be done by suspension, emulsion or solution techniques. Low polymerization temperatures are used when high MW material is required. Suspension polymerization employs water suspension agents, such as poly(vinyl alcohol) or methylcellulose. The resulting polymer Is a partially syndiotactic material but with low crystallinity. The macromolecules typically have head to tail linkages (H-T) and a small proportion (less than 1.5%) of branching. Ziegler-Natta catalysts are not used to produce PVC. 

Use As a binder, thickener, and suspension agent in food and pharmaceuticals. 

MC-500 can be used with water-cement ratios of one and higher. Without additives other than a suspension agent the initial setting time is four to five hours, at ambient temperatures. Shorter setting times, as low as several minutes, can be attained by adding sodium silicate, or AC-400 grout. Viscosity of a mix with a w-c ratio of two is about ten centipoises (cps). 

Polyvinyl alcohols (PVAl) are manufactured by saponification of vinyl acetate polymers (PVAc). Properties of PVC using PVAl as a protective colloid are influenced by the solution viscosity of the PVAl, i.e. the degree of polymerization of the PVAc and the degree of saponification. Polyvinyl alcohols of 75-90% hydrolysis are primary suspension agents for S-PVC, whereas polyvinyl alcohols of 25-40% hydrolysis are secondary suspension agents, which control the agglomeration of the primary particles. Partially hydrolyzed PVAc can be block or random polymers. 

Nonaqueous suspension agents such as paraffin oils have been developed to polymerize polar monomers, such as acrylic acid. The so-called water-in-oil (W/O) suspension polymerization (reversed phase suspension polymerization) comprises an aqueous solution containing the hydrophilic monomer(s) and initiator(s), which are dispersed in a liquid paraffin oil or other nonpolar hydrocarbon media and polymerized. The use of perfluorocarbon fluids has extended the scope of the suspension polymerization method to monomers and initiators that cannot be used, due to their high solubility and reactivity, in conventional suspension media [249]. 

Products and Uses Added to sea biscuits to prevent weevil infestation. Used in hair-setting lotions, personal care products, and cosmetic bases as a filler or additive, and for convalescent food. It is also an alcoholic beverage flavoring and a suspension agent for hair products and toiletries. 

Polymerization in suspension involves stirring the monomers vigorously into water where they disperse into droplets. A suspension agent such as gelatine or talc is added and coats each droplet to prevent it forming large drop again. 

Uses Lubricant, tackifier in many formulations for paper mfg., wastewater treatment, ceramic and glass treatment, adhesives, paints thickener, suspension agent, friction reducer, coagulant, skin slip agent in cosmetics... 

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