Silicon-containing polyacrylate flatting agent and preparation method thereof
A polyacrylate and acrylate technology, used in the field of new silicon-containing polyacrylate leveling agent and its preparation, can solve the problems of high surface tension, poor leveling, poor recoatability, etc., and achieve low surface Excellent leveling, good compatibility, anti-shrinkage and defoaming
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Embodiment 1
[0022] The proportioning in parts by mass of the silicon-containing polyacrylate leveling agent of the present embodiment is as follows:
[0023] Butyl acrylate 44; styrene 1; methyl methacrylate 2; acrylic acid 1; hydrogenated silicone oil 1; tert-butyl peroxybenzoate alkane 0.6; platinum catalyst (H 2 PtC l6 ·6H 2 O) 0.4; xylene solvent 50.
[0024] The preparation of silicon-containing polyacrylate leveling agent described in the present embodiment comprises the steps:
[0025] a In a reactor with a stirrer, take by weighing one-third of the butyl acrylate, styrene, methyl methacrylate, and 80% xylene solvent of the feeding amount according to the stoichiometric ratio, start stirring, and heat up to 108°C;
[0026] After b procedure a is finished, take remaining 2 / 3 butyl acrylate, styrene, methyl methacrylate, all acrylic acid, all tert-butyl peroxybenzoate alkane, dropwise in the reactor at a uniform speed, Add dropwise for 3.5 hours, continue the constant temperatur...
Embodiment 2
[0030] The proportioning in parts by mass of the silicon-containing polyacrylate leveling agent of the present embodiment is as follows:
[0031] Butyl acrylate 40; styrene 3; isooctyl acrylate 8; acrylic acid 0.8; hydrogenated silicone oil 1.3; tert-butyl peroxybenzoate 2.1; platinum catalyst (H 2 PtC l6 ·6H 2 O) 0.8; toluene solvent 44.
[0032]The preparation steps of the silicon-containing polyacrylate leveling agent described in this embodiment are the same as in Example 1 except that the following details are changed:
[0033] After step a completes feeding, the temperature is raised to 107°C;
[0034] After the feeding in step b is completed, the dropwise addition time is 3 hours, and the constant temperature reaction is continued for 1 hour after the dropwise addition, and then the temperature is lowered to about 50°C;
[0035] After the process of adding hydrogenated silicone oil dropwise in step c, continue the constant temperature reaction for 1.2 hours, and the...
Embodiment 3
[0038] The proportioning in parts by mass of the silicon-containing polyacrylate leveling agent of the present embodiment is as follows:
[0039] Butyl acrylate 44; Styrene 3; Methyl methacrylate 2; Hydrogenated silicone oil 3; Benzoyl peroxide 1.1; Rhodium catalyst (RhCl 3 (PPh 3 ) 3 )0.9; xylene solvent 46.
[0040] The preparation steps of the silicon-containing polyacrylate leveling agent described in this embodiment are the same as in Example 1 except that the following details are changed:
[0041] Step a is heated up to 104 DEG C after finishing feeding;
[0042] Step c: After the addition of hydrogenated silicone oil, continue the constant temperature reaction for 1.1 hours, then raise the temperature to 106°C, and continue the constant temperature reaction for 1.1 hours;
[0043] In step d, take cooling measures after the reaction is completed, and when the temperature drops to about 53°C, filter and discharge to obtain the polyacrylic acid leveling agent containi...
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