Developers charge control agents

Otaki, K. Suguro, Y. Electrostatographic developer toners containing polymer particles coated with charge-controlling agent. Jpn. Kokai Tokkyo Koho JP 04039673, 1992 Chem. Abstr. 1992,117, 80023. 

The molecular specificity of Fourier transform infrared (FTIR) lends itself quite well to applications in pharmaceutical development labs, as pointed out in a review article with some historical perspective.10 One of the more common applications of mid-IR in development is a real-time assessment of reaction completion when used in conjunction with standard multivariate statistical tools, such as partial least squares (PLS) and principal component analysis (PCA).18,19 Another clever use of FTIR is illustrated in Figure 9.1, where the real-time response of a probe-based spectroscopic analyzer afforded critical control in the charge of an activating agent (trifluoroacetic anhydride) to activate lactol. Due to stability and reactivity concerns, the in situ spectroscopic approach was... 

Dryer softeners are employed primarily in North America to control the buildup of static charge in the tumble clothes dryer. The product consists of a 1" x 12" sheet made of polyester and a mixture of a cationic surfactant and a release or distribution agent is applied to the sheet [52-54]. The level of the agent is typically 1.0-2.0g per sheet and is in a solid form on the sheet [55, 56]. The sheet is tossed into the dryer with the wet clothes at the beginning of the cycle and controls the development of static charge throughout the dryer cycle. 

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