Modifying agent

Interaction of Solids With Flotation Reagents. For flotation to occur with the aid of reagents, such compounds must adsorb at the sohd—hquid interface unless the soHd to be floated is naturally hydrophobic. In this latter case only depression can be attempted by the use of additional ions or depressants that hinder bubble—particle adhesion. Frothers (typically long-chain alcohols) and/or modifying agents such as hydrocarbon oils can, however, be used to enhance the collection of naturally hydrophobic soflds such as M0S2, talc, or plastics. 

In solution-based polymerisation, use of the initiating anionic species allows control over the trans /cis microstmcture of the diene portion of the copolymer. In solution SBR, the alkyUithium catalyst allows the 1,2 content to be changed with certain modifying agents such as ethers or amines. The use of anionic initiators to control the molecular weight, molecular weight distribution, and the microstmcture of the copolymer has been reviewed (15). 

Trimethyl-l,3-pentanediol (TMPD), the hydrogenated aldol condensation product of isobutyraldehyde, is a modifying agent in alkyd resins (qv), high sohds coatings, and moisture-set inks. 

Impression plasters are manufactured from the finest finishing plasters, selected for color and purity. Setting time accelerators, setting expansion control agents, fillers, flavors, colors, or other special modifying agents may be added, eg, starch, to cause disintegration of the plaster impression when it is boiled. 

Quantities of modifying agents used vaiy widely, ranging from as little as 0.01 to 0.1 g/kg to as high as 1 to 2 g/kg of sohds, depending upon the reagent and the metallurgical problem. 

No. Modifying Agent Chloroform Methylene Chloride Solvent DMF DMSO DMAC THF Acetone... 

VI. CLINICAL TRIALS FOR AD TESTING OF POSSIBLE DISEASE-MODIFYING AGENTS... 

Preferred Amino Acid Side Chain Modified Modifying Agent... 

There are ways of modifying all the four bases of DNA chemically and of modifying the proteins bound to them, such as histones, which affect expression. Modification is environment dependent, e.g. availability of modifying agents. 

Surface Modifying Agents 4.1 Capping and Passivating Agents... 

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