FERRO CORP.: Carbonate Solvents

Ferro Corp.’s Organic Specialties Group has expanded its product line of high-performance solvents to include cyclic and linear carbonates. These carbonates are high-purity, cost-effective alternatives to halogenated solvents and N-Methyl-2-pyrrolidinone (NMP) with excellent toxicity properties. Ferro has increased production capacity to offer high-purity carbonates to the broader market, in addition to its internal use for Purolyte® electrolytes for lithium and lithium ion batteries. The company launched the carbonate solvents at InformexUSA 2008, held in New Orleans, LA, Jan. 29–Feb. 1.

In addition to electrolytes applications, the solvents’ high purity makes them ideal for dissolving photoresists in electronics manufacturing and for cleaning surfaces of silicon wafers in semiconductor fabrication. The carbonates’ toxicity properties reduce exposure risks in manufacturing environments and make them suitable for low-odor consumer products, such as water-based adhesives and inks. Their high polarity improves suspension of pigments in inks, enabling cartridges that spray evenly without clogging, and inks that penetrate paper without diffusing or smearing. The carbonates also offer advantages as reaction solvents in fine chemicals manufacturing, particularly in methylation reactions and low-water applications, and they can be used in environmentally friendly cleaning solutions.

Ferro’s new offering includes propylene and ethylene cyclic carbonates and diethyl and dimethyl linear carbonates. Purities range from 99.0% to 99.98%. All are strongly polar and aprotic, with boiling points ranging from 90

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