Abstract: |
A hydrophobic water-soluble polymer as viscosity increaser is prepared through adding dodecylamine and 3-chloropene or 3-bromopropene to tetrahydrofuran as solvent, after reaction, neutralizing with aqueous solution of sodium hydroxide, separating to obtain alkyldodecyl para-amine; adding 3-chloropropene or 3-bromopropene; after reaction, neutralizing with aqueous solution of sodium hydroxide, separation, then adding polymerizing inhibitor, drying to obtain dially dodecylamine; preparing solution of carboxymethyl cellulose, adding persulfate and tetramethyl ethanediamine, dripping the mixed solution of acrylamide and dially dodecyamine, and after reaction, extracting and baking to obtain the product. Its advantages include high water solubility, and high resistance to salt, high temp. and shearing. |