Acrylic acid ester compound and polymer, preparation method and application thereof
A technology for acrylates and compounds, applied to acrylate compounds and polymers and their preparation and application fields, can solve the problems of difficulty in improving temperature resistance and salt resistance, and achieve the effects of good temperature resistance, improved comprehensive performance and high molecular weight
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[0038] According to the preparation method of the acrylate compound provided by the present invention, the acrylate compound can be obtained from the first organic compound through an esterification reaction with 2-bromomethacrylic acid, or from the first organic compound and 2-bromomethacrylic acid. It is obtained by alcoholysis of methacryloyl chloride or 2-bromomethacryloyl bromide, and the first organic compound has a structure represented by formula (2);
[0039]
[0040] Formula (2)
[0041] Wherein, in formula (1) and formula (2), n is an average degree of polymerization, and n may be 7 to 44.
[0042] In the present invention, in formula (1) or formula (2), n is the average number of moles of ethoxy groups in formula (1) or formula (2), and n in formula (1) and formula (2) are the same . The value of n in the compound of formula (2) is determined according to the method of the national standard QB / T 2974-2008.
[0043] The compound of formula (2) of the present invention can...
Embodiment approach
[0086] According to a preferred embodiment of the present invention, the initiator includes a redox initiator and an azo initiator, and the weight ratio of the redox initiator to the azo initiator may be 1:0.5-2; The reduction initiator is composed of an oxidizing agent and a reducing agent, and the weight ratio of the oxidizing agent to the reducing agent may be 1:0.5-2; the oxidizing agent may be one of hydrogen peroxide, ammonium persulfate and potassium persulfate or A variety of, preferably ammonium persulfate and / or potassium persulfate; the reducing agent can be ammonium ferrous sulfate and / or sodium bisulfite, preferably sodium bisulfite; the azo initiator can be water-soluble An azo initiator, for example, one or more of azodiisopropylimidazoline hydrochloride, azodiisopropylimidazoline and azobisisobutylamidine hydrochloride.
[0087] According to the preparation method of the polymer according to the present invention, the polymerization aid can improve the efficiency ...
Embodiment 1
[0109] In a 1000 mL flask, 20.0 grams of polyethylene glycol monomethyl ether-350 (purchased from Aldrich, the compound of formula (2) with n being 9) and 4.0 grams of bromomethacrylic acid were dissolved in 100 grams of anhydrous toluene. Pour in high-purity nitrogen to deoxygenate for 25 minutes, add 0.1 g of hydroquinone and 0.1 g of p-toluenesulfonic acid, heat to azeotrope, react for 12 hours, concentrate the reaction solution under reduced pressure to make the concentrated reaction solution quality 10% of the mass of the former reaction solution, add 20 grams of chloroform, extract the concentrated reaction solution 3 times with 10 grams of water to remove hydroquinone, p-toluenesulfonic acid and excess bromomethacrylic acid, and use anhydrous chlorine Calcium hydrates the reaction solution after water extraction by drying to remove water, and evaporating the solvent under reduced pressure to obtain a colorless liquid product.
[0110] use 1 H-NMR analysis of the product yi...
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