Complex polymer and applications thereof
A polymer, aqueous solution polymerization technology, used in applications, drilling compositions, pharmaceutical formulations, etc., can solve the problems of salt resistance, temperature resistance, and application limitations, etc., to achieve good water solubility. Emulsifying and viscosity reducing ability, good solution viscosity reducing effect
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Embodiment 1
[0053] Embodiment 1, the acrylate monomer containing the tertiary amino group shown in the preparation formula III
[0054]Add 300g of dimethylamine aqueous solution (20%) into the reactor, stir, slowly add 46.8g of epichlorohydrin dropwise, after the dropwise addition is complete, raise the temperature to 65°C for 16h, lower to normal temperature, add solid sodium hydroxide to Slightly excess, left to stand and separated, the upper layer of light yellow liquid was separated with a separatory funnel, dried over anhydrous magnesium sulfate to obtain 51g of light yellow liquid 1,3-bis(N,N-dimethyl)-2-propanol.
[0055] Add 36.5g of light yellow liquid 1,3-bis(N,N-dimethyl)-2-propanol and 38g of acetone solution of p-hydroxymethylbenzoic acid into the reactor, then add concentrated sulfuric acid as a catalyst, and reflux for 6h , extracted with dichloromethane and water, and evaporated the organic layer to obtain 60 g of white crystal 1,3-bis(N,N-dimethyl)-2-propanyl-4-acryloylox...
Embodiment 2
[0056] Embodiment 2, the acrylate monomer containing carboxylic acid group shown in the preparation formula V
[0057] Add an acetone solution containing 30.8g of ethyl m-dihydroxybenzoate into the reactor, add 12g of potassium carbonate, 62.5g of 18-crown ether, stir for 5min, add 30g of bromooctane, and reflux for 24h under stirring. After cooling to room temperature, the solvent was distilled off under reduced pressure, and the residual solid was repeatedly extracted with water and ether. The organic phase was washed with saturated brine, evaporated to dryness, and purified by silica gel chromatography to obtain 16 g of a sample.
[0058] 3g LiAlH 4 Add it into anhydrous tetrahydrofuran, cool to 0°C, dissolve 14.3 g of the sample obtained by the above reaction in anhydrous tetrahydrofuran, and add LiAlH dropwise 4 Tetrahydrofuran solution, reacted at room temperature for 12h, dissolved in ethyl acetate and water, filtered off the precipitate, separated the organic phase, e...
Embodiment 3
[0060] Embodiment 3, preparation composite polymer P 1
[0061] (1) in (NH 4 ) 2 S 2 o 8 -NH 4 FeSO 4 Under the condition of the redox initiator of composition, the acrylate monomer containing the tertiary amino group shown in the formula III prepared in Example 1 obtains the polymer shown in the formula I through aqueous solution polymerization, wherein, (NH 4 ) 2 S 2 o 8 -NH 4 FeSO 4 The composition and amount (accounting for the percentage of monomer) of redox initiator are as shown in Table 1 (in the table, surface active monomer content refers to the mass percentage of surface active monomer (monomer shown in formula III) accounts for the solution, That is, the solid content; in this example, four sets of polymerization experiments were performed by adding different qualities of initiators under the same solid content).
[0062] The temperature of the polymerization reaction was 5° C., and the time was 2 hours.
[0063] The solid content in the reaction liqui...
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Abstract
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