Waterborne epoxy ester dispersion as well as preparation method and application thereof
A technology of dispersion and epoxy ester, applied in the direction of coating, anti-corrosion coating, etc., to achieve the effect of low cost, high product purity and low energy consumption
Inactive Publication Date: 2021-04-20
NANJING CHANGJIANG PAINT
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[0009] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, provide a kind of low-cost, low VOC content, the modified water-based epoxy ester dispersion of good initial water
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The invention discloses a waterborne epoxy ester dispersion as well as a preparation method and application thereof, and belongs to the field of chemical waterborne coatings. The preparation method comprises the following steps: firstly, epoxy ester resin is synthesized through high-temperature reaction of epoxy resin and fatty acid; secondly, through graft copolymerization, some functional monomers are effectively introduced, so that the dryness and the adhesive force of the resin are improved; and through synergistic introduction of hydrophilic groups, a good waterborne epoxy ester dispersion is obtained, and meanwhile, the initial water resistance and the later corrosion resistance of a resin system are improved. The preparation method provided by the invention has the advantages of few side reactions in the process, high product purity, simple process and low cost, and the prepared varnish film has excellent performance and is very suitable for protection of an oil casing system.
Description
technical field [0001] The invention relates to the preparation of a modified water-based epoxy ester dispersion in the field of chemical water-based coatings, more specifically to the preparation of a water-based one-component epoxy ester dispersion and its coating in petroleum casing The invention belongs to the technical field of water-based resin synthesis. Background technique [0002] Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well after well transfer and completion. During the transportation and storage process before going into the well, it is necessary to paint the outer wall of the oil casing with anti-corrosion coating. Prevent the oil casing from being corroded and failed, and play a temporary protective role. [0003] At present, there are three major categories of one-component protective systems: water-based acrylic, water-based alkyd, and water-based epoxy ester, each of whic...
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Patent Timeline
Login to View More IPC IPC(8): C08F290/06C08F283/06C08F212/08C08F220/06C08F220/14C08F220/34C08F220/18C09D151/08C09D5/08
Inventor 陈以满张卫中
Owner NANJING CHANGJIANG PAINT