Water emulsification process of alkyd resin coating
A technology of alkyd resin and process method, applied in polyester coatings, coatings, etc., can solve problems such as production difficulties, poor stability of emulsified solvents, high shear force, etc., and achieve less equipment investment, good stability, and lower VOC. Effect
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[0040] Example 1:
[0041] 1. Preparation of water-in-oil resin emulsion
[0042] (1) Weigh 600Kg of distilled water and 6Kg of zinc sulfate, put it into the stainless steel high-position tank, start stirring, and confirm that the dissolution is complete for use.
[0043] (2) Weigh 150Kg of alkyd resin (preferably high-viscosity long oil), 35Kg of OP-10 emulsifier, add them to the stainless steel emulsification kettle, start stirring, and add dropwise to the high tank when the stirring linear speed reaches 6 m / s or more Aqueous sulfate solution. The alkyd resin and the emulsifier are stirred at a certain speed to generate a certain shear force to obtain a highly stable water emulsified resin liquid.
[0044] (3) After dripping, stir at high speed for 30-80min to continue emulsification; then, adjust the viscosity with 200# solvent oil and / or alcohol solvent to reach the viscosity range required by the process, making it easy to produce and operate.
[0045] 2. Preparation of alkyd res...
Example Embodiment
[0051] Example 2:
[0052] 1. Preparation of water-in-oil resin emulsion
[0053] (1) Weigh 600Kg of distilled water and 8Kg of sodium sulfate, put them into a stainless steel high-position tank, start stirring, and confirm that the dissolution is complete for use.
[0054] (2) Weigh 100Kg of high-viscosity long oil alkyd resin and 50Kg of OP-10 emulsifier, add them to the stainless steel emulsification kettle, start stirring, and drop the sulfate aqueous solution in the high tank when the stirring linear speed reaches 6 m / s or more. The alkyd resin and the emulsifier are stirred at a certain speed to generate a certain shear force to obtain a highly stable water emulsified resin liquid.
[0055] (3) After dripping, stir at high speed for 30-80min to continue emulsification; then, adjust the viscosity with 200# solvent oil and alcohol solvent to reach the viscosity range required by the process, and use it to facilitate production and operation.
[0056] 2. Preparation of alkyd resin p...
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