A kind of internal salt compound formed by two types of polymers and its preparation method and application
A technology of polymers and complexes, applied in the direction of botanical equipment and methods, applications, drilling compositions, etc., can solve the problems of large application limitations, salt resistance, and temperature resistance, etc., and achieve water-soluble Good performance, good emulsification and viscosity reducing ability, good solution viscosity reducing effect
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Embodiment 1
[0055] The preparation (R 1 =R 2 =-CH 3 )
[0056] according to figure 1 The synthetic route diagram shown in the synthetic formula III shows the acrylate monomer containing tertiary amino group (R 1 =R 2 =-CH 3 ).
[0057] Add 300g of dimethylamine aqueous solution (20%) in the reactor, stir, slowly dropwise add epichlorohydrin 46.8g, dropwise complete, heat up to 65 ℃ and react for 16h, drop to normal temperature, add solid sodium hydroxide to Slightly excess, let stand to separate layers, the upper layer of light yellow liquid was separated with a separatory funnel, dried over anhydrous magnesium sulfate, and then distilled under reduced pressure to obtain 51g of light yellow liquid 1 (1,3-bis(N,N-dimethyl) -2-propanol). Put 36.5g of light yellow liquid 1 and 26.5g of diethylene glycol in a 250ml water separator containing chloroform, use an appropriate amount of anhydrous zinc chloride as a dehydrating agent, reflux to separate water, react for 3 hours, and distill u...
Embodiment 2
[0058] The preparation of the acrylate monomer containing carboxylic acid group shown in embodiment 2, formula V (x=6)
[0059] according to figure 2 The synthetic route shown in the synthetic scheme synthesizes the acrylate monomer (x=6) containing the carboxylic acid group shown in formula V.
[0060] Dissolve 110g of 8-bromooctanoic acid in 1000mL of methanol, then add 12.5mL of concentrated sulfuric acid dropwise, stir, and reflux for 8-10h. The methanol was removed by rotary evaporation in vacuo, and the crude product was washed with NaHCO 3 Wash with aqueous solution, extract with ethyl acetate, recover the organic phase, and remove the solvent by rotary evaporation under vacuum to obtain methyl 8-bromooctanoate;
[0061] Add the ethanol solution that contains 46.2g of 3,5-dihydroxybenzoic acid in the reactor, then add the concentrated sulfuric acid of catalytic amount, reflux 12h, vacuum rotary evaporation removes ethanol, crude product is with NaHCO 3 Wash with aqu...
Embodiment 3
[0063] Embodiment 3, preparation compound P 1
[0064] (1) at a mass ratio of 1:1 (NH 4 ) 2 S 2 o 8 -NH 4 FeSO 4 Under the action of the formed redox initiation system, the acrylate monomer containing the tertiary amino group described in the formula III prepared in Example 1 is polymerized by aqueous solution, and after drying and pulverizing, the polymer shown in the powder product formula I ( R 1 =R 2 =-CH 3 ), wherein, n is an integer between 30 and 55;
[0065] During the above-mentioned aqueous solution polymerization process, the solid content of the reaction solution is 10%, and in the initiator (NH 4 ) 2 S 2 o 8 The dosage is equal to NH 4 FeSO 4 , and are respectively 0.1% of the mass of the monomers, the reaction temperature is 5°C, and the time is 8 hours;
[0066] (2) at a mass ratio of 1:1 (NH 4 ) 2 S 2 o 8 -NH 4 FeSO 4 Under the action of the formed redox initiation system, the acrylate monomer containing the carboxylic acid group shown in ...
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