Principle of Tin Removal with TMG Tinfilter Catalyst

2021-11-24   Pageview:158

TMG Tinfilter is only effective for inorganic tin catalysts and not for organotin catalysts.

The principle of tin removal with TMGTinfilter is to bring TMG 160 (stannous oxalate) into full contact with the granular TMG Tinfilter. The higher the viscosity of the ester (e.g. 1000 mPa-s or higher), the lower the infiltration rate of TMG Tinfilter and the lower the adsorption rate of TMG 160. Often the consequence of this is that the efficiency of removal decreases and the use of TMG Tinfilter increases, which reduces its economy.

 

 

 

 

 

 

 

 

 

 

 

Boron and zinc release a large amount of crystal water when the temperature is above 300℃, which plays the role of heat absorption, temperature reduction and smoke suppression. Zinc borate is an inorganic additive flame retardant. Because of its non-toxicity, low water solubility, high thermal stability, fine particle size, and good dispersibility, it has a wide range of applications in the field of flame retardancy. Generally, it can be compounded with antimony oxide [FB:SbgOs=(1:1)~(3+1)] and added to fireproof coatings prepared with halogen-containing resins such as chloroprene rubber, chlorinated resin, and chlorinated polyethylene, or with Other halogen-containing flame retardants such as chlorinated paraffin, decabromodiphenyl ether, tetrabromobisphenol A

hexabromocyclododecane, etc. are used together. In addition to being a flame retardant, zinc borate can also be used as a solid phase smoke suppressant. Daily fires cause deaths to a large extent due to suffocation deaths caused by inhalation of a large amount of smoke. Zinc borate has good smoke suppression properties. When the mass ratio of antimony trioxide and zinc borate is (1:1)~(1.2), the overall performance of flame retardant and smoke suppression is the best.

Melamine Melamine, also known as melamine or melamine, has a molecular formula of C: HNs, a relative molecular mass of 126, colorless needle-like crystals, a nitrogen content of 66.7%, a relative density of 1.573, a melting point of 350°C, and a low solubility in water: It can dissolve 0.5g in 100g water at 25℃; it can dissolve 5g in 100g water at 100℃. Slightly soluble in hot ethanol, insoluble in ether, benzene, carbon tetrachloride.

Melamine sublimates when heated, and decomposes violently, releasing NH; polyamide wax usa forming a series of compounds:
Melamine is often used in the manufacture of intumescent fire retardant coatings, mainly acting as a foaming component and flame retardant. Because it does not contain halogen, is non-toxic, and does not pollute the environment, it has received great attention from people.

In recent years, the output of melamine has increased sharply. In addition to being used as a flame retardant alone, melamine is commonly used in its inorganic acid salts, such as hydrochloride, hydrobromide, sulfate, borate, phosphate, and cyanurate (MCA). Its phosphate is often used in fire retardant coatings and fire retardant fluids. Melamine phosphates include phosphoric acid-melamine salt (C, HN, ·HPO i), phosphate dimelamine salt [2(CH; Ng).HyPO] and pyroacid melamine salt [2(CgH N, ).HPa O;] etc. Different phosphates are not only different in composition, different in structure, solubility, thermal stability and dispersibility are also different, so the flame retardant effect is different, but they are all foaming agents widely used in intumescent fire retardant coatings And flame retardant, its effect is better than ammonium polyphosphate, and it also has the advantage of weather resistance. This kind of fire retardant coating is widely used in construction, especially steel structure coating. Melamine phosphate can be used for flame retardant treatment of fabrics and plastics.

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