A kind of aqueous polyurethane/polyacrylate modified ketone-aldehyde resin composite emulsion and its preparation method and application
A technology of water-based polyurethane and polyacrylate, applied in the field of technical polyurethane emulsion, can solve the problem that water-based products cannot be applied, and achieve the effects of improving storage stability, high hardness and high fullness
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Embodiment 1
[0062] A water-based polyurethane / polyacrylate modified ketone-aldehyde resin composite emulsion, the preparation process of which is as follows:
[0063] S1. Pour 30kg of KY-120 aldehyde-ketone resin produced by Yueyang Keyuan New Materials Co., Ltd. and 20kg of ethyl acetate into the reactor, and stir to dissolve KY-120; add 9kg of IPDI, 177g of butanone oxime, and 70g of catalyst DBTDL to In the reaction kettle, after stirring evenly, the temperature was raised to 70 degrees Celsius; the reaction was stopped for 3 hours to obtain the aldehyde ketone-polyurethane prepolymer;
[0064] S2, 2.77kg TMP was joined in the reactor, reacted 5 hours; 6kg PEG600, 9kg IPDI were joined in the reactor, reacted 10 hours;
[0065] S3, open the vacuum valve, extract the ethyl acetate solvent in the kettle, and cool it to about 50°C;
[0066] S4. First add 50kg of deionized water into the kettle, then add 1.8kg of DMEA, slowly start stirring (rotation speed is 200r / min), then adjust to the ...
Embodiment 2
[0070] A water-based polyurethane / polyacrylate modified ketone-aldehyde resin composite emulsion, the preparation process of which is as follows:
[0071] S1. Pour 30kg of KY-120H aldehyde and ketone resin produced by Yueyang Keyuan New Materials Co., Ltd. and 20kg of acetone into the reactor, stir to dissolve KY-120H; add 16.8kg of TDI, 130g of di-n-butylamine, and 90g of catalyst DBTDL to In the reaction kettle, after stirring evenly, the temperature was raised to 70 degrees Celsius, and the reaction was stopped for 3 hours to obtain the aldehyde ketone-polyurethane prepolymer;
[0072] S2, 4kg DMPA was joined in the reactor, reacted 5 hours; 4kg PEG800 was joined in the reactor, reacted 10 hours;
[0073] S3. Open the vacuum valve, draw out the solvent in the kettle, and cool down to about 50°C;
[0074] S4. First add 5kg of deionized water into the kettle, then add 2kg of triethylamine, slowly start stirring, then adjust to the highest speed, maintain the emulsification t...
Embodiment 3
[0078] A water-based polyurethane / polyacrylate modified ketone-aldehyde resin composite emulsion, the preparation process of which is as follows:
[0079] S1, pour KY-120 aldehyde-ketone resin and 20kg tetrahydrofuran produced by 30kg Yueyang Keyuan New Materials Co., Ltd. into the reactor, stir to dissolve KY-120; add 9kg MDI, 200g 2-methylimidazole, 70g catalyst DBTDL to In the reaction kettle, after stirring evenly, the temperature was raised to 70 degrees Celsius; the reaction was stopped for 3 hours to obtain the aldehyde ketone-polyurethane prepolymer;
[0080] S2, 3kg DMBA was joined in the reactor, reacted 5 hours; 6kg PEG800, 1.1kg MDI were joined in the reactor, reacted 10 hours;
[0081] S3, open the vacuum valve, draw out the tetrahydrofuran solvent in the kettle, and cool down to about 50 degrees;
[0082] S4. First add 7kg of deionized water into the kettle, then add 1.3kg of AMP-95, slowly start stirring, then adjust to the highest speed, maintain the emulsific...
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