Water emulsification process of alkyd resin coating
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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
Active Publication Date: 2013-01-23
CHONGQING SANXIA PAINTS CO LTD
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Problems solved by technology
[0006] 2. The external emulsification technology of alkyd resin paint is difficult to produce according to the general paint production equipment due to the high viscosity after emulsification, and the production process is not easy to realize
[0007] 3. The water
Method used
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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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Abstract
The invention discloses a water emulsification process of an alkyd resin coating. The coating is generated by proportionally mixing and stirring four or more substances in alkyd resins (high viscosity), an emulsifying agent, distilled water, sulfates, 200# solvent oil, n-butanol and isobutanol according to the following steps: throwing the distilled water and the sulfates into a head tank with stirring according to the proportion and stirring and dissolving the substances for later use; throwing the alkyd resins and the emulsifying agent into an emulsifying kettle, dropwise adding water solution from the head tank when the stirring linear speed is more than 6m/s and controlling the dropwise adding time between 30 minutes and 90 minutes; and stirring and emulsifying the substances for 40-80 minutes at high speed after dropwise adding and using the solvent oil and/or an alcohol solvent to adjust the viscosity. The process has the following characteristics that the water emulsion replaces part of organic solvents and has stable properties, thus reducing the VOC (volatile organic compounds) of the alkyd resin coating, without affecting the properties of the coating; the VOC can be reduced by 10-30% at most and the product reaches the national standard; and the needed equipment investment is low and the water-in-oil alkyd resin emulsion has good stability.
Description
Technical field [0001] The present invention involves the field of alcoholic acid resin coating preparation technology, which specifically involves alcoholic acid resin coating water emulsification process, and reduces the technologies such as volatile organic compounds (VOC) content. [0002] Background technique [0003] In 2011, China's coating industry output reached 10.795 million tons. The industrial protection field had coating demand second only to about 25%of the total output of construction coatings.%, Plus the use of vegetable oil, unlike the non -renewable oil products, which is of great significance to make full use of Earth resources.However, the large amount of solvent -based alcoholic acid resin coatings have a destructive effect on the atmosphere, which will directly affect the human living environment.Therefore, reducing alcoholic acid resin paint VOC is of great significance. [0004] There are various technical routes in the hydration of alcoholic acid resin c...
Claims
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