Sulfuric Acid → Prop-2-enimidic acid--2-(dimethylamino)ethyl 2-methylprop-2-enoate (1/1)

Participants

Reaction Steps

The procedure described in Reference Example 1 was repeated except that 49.7 g. of acrylamide, 55.8 g. of dimethylaminoethyl methacrylate and 40.0 g. of 35 % sulfuric acid were employed to give an aqueous solution of acrylamide-dimethylaminoethyl methacrylate copolymer (70 : 30 by mole) having a concentration of 10 %, a pH of 7.3 and a viscosity of 3,000 cP at 25°C. To 680 g. of the solution were added 86 g. of 10 % aqueous solution of polyethyleneimine having a degree of polymerization of 1,500 and 81.4 g. of epichlorohydrin and the resultant was subjected to reaction at pH 10.0 at 80°C. for 2 hours. The reaction mixture was diluted with water and adjusted to pH 5.0 with sulfuric acid to give an aqueous solution of cationic thermosetting resin having a concentration of 10.3 % and a viscosity of 500 cP at 25°C.

Provenance & Evidence