1, TEGOPREN 5840 has excellent malleability, low surface tension and can be diluted with water without affecting the surface properties.
2, TEGOPREN 5840 is distinguished by its excellent extensibility, can be diluted with water, and wipes off easily without leaving marks on the surface. It is particularly suitable for addition to spray polishes due to its non-streaking wetting effect.
3, TEGOPREN 5840 has excellent anti-fogging properties and can be used to treat interior windshields in automobiles. Due to its good wetting properties, TEGOPREN 5840 spreads easily over the entire surface, ensuring clean and clear glass.
Direct method of drier
Under reducing conditions, metallic cobalt reacts directly with organic acids under thermal catalysis to produce metallic soap under oxidizing conditions.
Mn+2RCOOH-一(R COO) aMn+H: ↑
Co+0.5O, +2RCOOH→→(R COO) 2Co+Hz O There is no sodium sulfate or sodium acetate silicone-modified wax in the reaction process, so there is no contamination by inorganic salts. The process is carried out under heating and refluxing of a mixture of organic acids, hydrocarbon solvents, water and fine metal powders. When the reaction is complete, the water is distilled off, filtered and adjusted for its metal content.
Since it has no inorganic salts, it has good drying properties. 2. Detection of the drier [39~41] 1. The metal content of the drier The metal content of the drier must be measured correctly. The measurement method can be EDTA titration and atomic absorption spectrometry (A AS). The solvent, indicator and titration solution used in the EDTA titration method are determined by the metal type of the drier.
Atomic absorption spectroscopy is to heat the sample under the high temperature of the flame. The flame dissociates the chemical bonds of the metal soap and forms a floating cloud of each atomic component. In this case, the wavelength of the absorption spectrum of each element is different. The resonance wavelength of each metal soap is shown in Table 6-16.
Atomic absorption spectroscopy
Calcium Ferro Manganese
Cobalt Zinc Zirconium
EDTA is now used for rapid quantification, but this method cannot separately determine the different metal soaps in the mixed drier, and a simple qualitative method can also be used to determine the type of the drier.
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