Acrylate emulsion with super weather resistance, super stain resistance and super water whitening resistance and preparation method thereof
A technology of acrylate and isooctyl acrylate, which is applied in super-weather-resistant, super-water-resistant acrylate emulsion and its preparation, and super-stain-resistant fields. It can solve the problem of affecting customer use and good experience, yellowish appearance, and product abnormalities. and other problems, to achieve good performance, increase cross-linking density, and improve the effect of weather resistance
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[0062] In yet another aspect, the present invention provides a method for preparing any of the above-mentioned acrylate emulsions, which may specifically include the following steps in sequence:
[0063] S1. Under normal temperature and pressure, add 1-3 parts of emulsifier and 20-40 parts of water into the emulsification tank, stir with dispersant for 5 minutes to make it fully mixed, then add 10-15 parts of methyl methacrylate, acrylic acid 25-35 parts of isooctyl ester, 50-60 parts of butyl methacrylate, 1-3 parts of methacrylic acid, and 1-5 parts of functional monomers are stirred by a disperser for 20 minutes to make them fully mixed and uniform to prepare a pre-emulsion ;
[0064] S2. Add 2-3 parts of emulsifier and 60-80 parts of water to the reaction kettle, raise the temperature to 78-90°C, stir at 5-20r / min for 15-30min, and drop the pre-emulsion, Use 0.1-0.5 parts of persulfate dissolved in 5-10 parts of water for polymerization reaction, the reaction temperature ...
Embodiment 1
[0077] A super-weather-resistant, super-stain-resistant, super-water-resistant acrylic emulsion is prepared by the following sequential steps:
[0078] (1) Under normal temperature and pressure, add 2 parts of SR-10 and 20 parts of water into the emulsification tank, stir with a dispersant for 5 minutes to make it fully mixed, then add 10 parts of methyl methacrylate and 25 parts of isooctyl acrylate Esters, 50 parts of butyl methacrylate, 1 part of methacrylic acid, and 1 part of vinyltrimethoxysilane were stirred with a disperser for 20 minutes to make them fully mixed evenly, and then a pre-emulsion was prepared.
[0079] (2) Add 1 part of SR-10 and 60 parts of water into the reaction kettle, raise the temperature to 78°C, and stir for 15 minutes at a speed of 5-20r / min, then add the pre-emulsion prepared in step (1) dropwise, 0.1 part of ammonium persulfate dissolved in 5 parts of water is used for polymerization reaction, the reaction temperature is 80°C, the dropping tim...
Embodiment 2
[0086] A super-weather-resistant, super-stain-resistant, super-water-resistant acrylic emulsion is prepared by the following sequential steps:
[0087] (1) Under normal temperature and pressure, add 3 parts of SR-10 and 25 parts of water into the emulsification tank, stir with a dispersant for 5 minutes to make it fully mixed, then add 12 parts of methyl methacrylate and 28 parts of isooctyl acrylate Esters, 53 parts of butyl methacrylate, 1 part of methacrylic acid, 2 parts of γ-methacryloxypropyltrimethoxysilane, stirred by a disperser for 20 minutes to make them fully mixed evenly, and then a pre-emulsion was prepared.
[0088] (2) Add 1.5 parts of SR-10 and 70 parts of water to the reactor, raise the temperature to 80°C, and stir for 20 minutes at a speed of 5-20r / min, then dropwise add the pre-emulsion prepared in step (1), 0.2 parts of potassium persulfate dissolved in 6 parts of water was used for polymerization reaction, the reaction temperature was 82°C, the dropping ...
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