Novel acrylic acid modified alkyd resin and method for preparing same
A technology of alkyd resin and acrylic acid, applied in the field of resin, can solve problems such as poor acid and alkali resistance, and achieve excellent mechanical properties, excellent dryness, and easy construction
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Embodiment 1
[0035] (1) The mixed solution of xylene and ethyl acetate was stirred and heated up, and when the temperature reached 100° C., it was incubated for 0.5 hour, and then started to drop initiator benzoyl peroxide (BPO), methyl methacrylate (MMA), Styrene (St), n-butyl acrylate (n-BA) and methacrylic acid (MA) are mixtures for copolymerization reaction, the dropping time is controlled at 2 hours, and finally acrylic acid prepolymer is prepared;
[0036] The formula component content of the acrylic acid prepolymer is calculated by weight percent: xylene 51.69%, ethyl acetate 7.67%, methyl methacrylate 23.55%, n-butyl acrylate 7.84%, methacrylic acid 1.62%, benzene Ethylene 6.13%, initiator 1.50%.
[0037] (2) Add soybean oil and pentaerythritol to the reactor and heat up to 140°C, then add catalyst LiOH and continue to heat up to 240°C, after the alcohol clears, cool down to below 150°C, add the prepolymer of step (1) and phthalic anhydride and Benzoic acid; when the temperature r...
Embodiment 2
[0040] (1) Add the mixed solution of xylene and ethyl acetate into the reaction kettle and stir to raise the temperature. When the temperature reaches 110°C, keep it warm for 1 hour, and then start to add the initiators azobisisobutyronitrile (AIBN) and methyl methacrylate dropwise. (MMA), styrene (St), n-butyl acrylate (n-BA) and methacrylic acid (MA) are a mixture for copolymerization, and the dropping time is controlled at 3 hours to prepare an acrylic acid prepolymer;
[0041] The formulation component content of the acrylic acid prepolymer is calculated by weight percent: 50.04% of xylene, 9.82% of ethyl acetate, 20.06% of methyl methacrylate, 8.90% of n-butyl acrylate, 1.87% of methacrylic acid, benzene Ethylene 7.51%, initiator 1.80%.
[0042] (2) Add soybean oil and pentaerythritol to the reactor and heat up to 150°C, then add catalyst calcium oxide and continue to heat up to 250°C, after the alcohol is cleared, cool down to below 140°C and add the prepolymer and phtha...
Embodiment 3
[0045] (1) Add the mixed solution of xylene and ethyl acetate into the reaction kettle and stir to raise the temperature. When the temperature reaches 110°C, keep it warm for 1 hour, then start to drop the initiator 2,2-azobis(methylbutyronitrile), formazan Methyl acrylate (MMA), styrene (St), n-butyl acrylate (n-BA) and methacrylic acid (MA) are mixtures for copolymerization reaction, the dropping time is controlled at 2.5 hours, and finally acrylic acid pre- Polymer;
[0046] The formula component content of the acrylic acid prepolymer is calculated by weight percent: xylene 52.17%, ethyl acetate 11.23%, methyl methacrylate 19.38%, n-butyl acrylate 9.88%, methacrylic acid 1.73%, benzene Ethylene 5.11%, initiator 0.50%.
[0047] (2) Add soybean oil and pentaerythritol to the reactor and heat up to 150°C, then add catalyst lead oxide and continue to heat up to 240°C, after the alcohol is cleared, cool down to below 140°C and add the prepolymer and phthalic anhydride in step (...
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