Paint formula: TDI modified alkyd resin formula
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Last Update: 2020-04-03
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Source: Internet
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Author: User
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The key points are as follows: 1 Formula of TDI modified alkyd resin: raw material mass fraction /% vegetable oil 20-30 pentaerythritol 4-7 catalyst proper amount of phthalic anhydride 5-10tdi5-10200 × solvent gasoline 30-40 xylene 4-10 butanol 2-52 Synthesis process: raise the temperature of vegetable oil and polyol to 120 ℃ and add LiOH, and heat preservation and alcoholysis to the end point at 240 ℃ The esterification of methylphthalic anhydride and reflux xylene was carried out to meet the requirements Use 200 × solvent gasoline to dilute Drop the temperature to about 40 ℃ and add the mixed xylene TDI solution plus Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Paint Home News: 1 Formula of TDI modified alkyd resin: raw material mass fraction /% vegetable oil 20-30 pentaerythritol 4-7 catalyst proper amount of phthalic anhydride 5-10 TDI 5-10 200 × solvent gasoline 30-40 xylene 4-10 butanol 2-52 Synthesis process: raise the temperature of vegetable oil and polyol to 120 ℃ and add LiOH, heat preservation and alcoholysis to the end point at 240 ℃ The esterification of methylphthalic anhydride and reflux xylene was carried out to meet the requirements Use 200 × solvent gasoline to dilute Drop the temperature to about 40 ℃ and add the mixed xylene TDI solution After adding, keep the temperature at 60 ℃ for 1h, and then keep the temperature at 90 ℃ until it is qualified After the viscosity is qualified, cool it to 60 ℃ for 1h, and then heat it at 90 ℃ to qualified After the viscosity is qualified, cool to 60 ℃, add butanol, stir for 0.5h, filter and pack 3 Main technical indexes: project index viscosity (coating - 4 cups, 25 ℃) / s 150-200 acid value / (mgKOH / g) 1-2 solid content /% 50 ± 2 (the paint formula in this paper is only for reference) paint home is focused on news information and coating of coating, diatom mud, paint coating, coating process, fire retardant coating, diatom mud, paint coating, coating process, Decoration knowledge and effect drawing of fireproof coating,
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