Chemical additives and agents include a wide range of materials added to polymer resins, paints and coatings, adhesives, and other substances to modify specific processing or end-use properties. They include catalysts, wetting agents, levelers, clarifiers, coupling agents, deflocculants, thinners, thickeners, anti-caking agents and other chemicals. Chemical additives and agents are available in many different forms. Choices include inorganic chemicals or salts, organic chemicals or polymers, liquids or solutions, colloids or dispersions, bulk solids or granules, and powders. Some chemical additives and chemical agents are cationic or produce cations. Others are anionic or produce anions. Chemical additives and agents also metal removal agents, water softeners, oxidation inhibitors, anti-oxidants, plasticizers, reaction terminations and retarders, reaction accelerators, release agents, rheology modifiers and flow agents, scale inhibitors, settling agents and flocculants, stabilizers, and anti-degradants. Acids, acidulants, bases, alkali compounds and buffers are used to modify pH levels. Stabilizers are used to impart dimensional stability, color, fragrance, heat resistance, or ultraviolet (UV) stability. Thickeners, thinners, waterproofing additives, hydrophobing agents, surfactants, and wetting agents are also available.
Suppliers often specify chemical additives and agents by function. Products include algaecides and antifouling agents, antibacterial agents and bactericides, anti-caking and free flow agents, anti-static agents and static inhibitors, anti-wear and extreme pressure (EP) additives, aromas and fragrances, active pharmaceutical ingredients (API) and high-potency actives (HPA), aerators and air entrainment agents, biocides and cidal agents, binders and binding agents, catalysts and initiators, crosslinkers and vulcanizers, curing agents and hardeners, encapsulation and delivery systems, cloud point modifiers, clarifiers, conditioners and texture modifiers, coupling agents, corrosion inhibitors and vapor phase corrosion inhibitors (VCI). Suppliers of chemical additives and agents may also provide deactivators and passivators, defoamers and deaerators, demulsifiers, denaturants, dispersing agents and deflocculants, emulsifiers, extenders and diluents, film formers and drying aids, flame and fire-retardant agents, foaming and blowing agents, germicides and antimicrobial agents, chemical inhibitors, initiators, impact modifiers and toughening agents, hardness and strengthening agents, leveling agents, and lubricity additives.
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Engineering Web: Chemical Additives and Agents
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