Process for preparing waterfastness additive

A process which comprises (a) reacting allyl bromide with diethyl amine in a molar ratio of at least about 1 mole of allyl bromide per about 1.15 moles of diethyl amine and in a molar ratio of no more than about 1 mole of allyl bromide per about 2 moles of diethyl amine, thereby generating allyl diethyl amine in a monomer reaction mixture;

• (b) subsequently filtering the monomer reaction mixture to remove impurities;
• (c) subsequently reacting the allyl diethyl amine with allyl bromide, thereby generating solid diallyl diethyl ammonium bromide;
• (d) subsequently isolating the solid diallyl diethyl ammonium bromide;
• (e) subsequently dissolving the diallyl diethyl ammonium bromide in a solvent and adding thereto a polymerization initiator to form a polymerization reaction mixture;
• (f) subsequently heating the polymerization reaction mixture in a vessel equipped with a reflux condenser to a temperature of from about 90 to about 100° C., thereby generating poly(diallyl diethyl ammonium bromide);
• (g) subsequently isolating the poly(diallyl diethyl ammonium bromide) from the polymerization reaction mixture;
• and (h) admixing the isolated poly(diallyl diethyl ammonium bromide) with additional ingredients comprising water and a colorant, thereby forming an ink composition.

A process which comprises (a) reacting allyl bromide with diethyl amine in a molar ratio of at least about 1 mole of allyl bromide per about 1.15 moles of diethyl amine and in a molar ratio of no more than about 1 mole of allyl bromide per about 2 moles of diethyl amine, thereby generating allyl diethyl amine in a monomer reaction mixture;

• (b) subsequently filtering the monomer reaction mixture to remove impurities;
• (c) subsequently reacting the allyl diethyl amine with allyl bromide, thereby generating solid diallyl diethyl ammonium bromide;
• (d) subsequently isolating the solid diallyl diethyl ammonium bromide;
• (e) subsequently dissolving the diallyl diethyl ammonium bromide in a solvent and adding thereto a polymerization initiator to form a polymerization reaction mixture;
• (f) subsequently heating the polymerization reaction mixture in a vessel equipped with a reflux condenser to a temperature of from about 90 to about 100° C., thereby generating poly(diallyl diethyl ammonium bromide);
• (g) subsequently isolating the poly(diallyl diethyl ammonium bromide) from the polymerization reaction mixture;
• (h) admixing the isolated poly(diallyl diethyl ammonium bromide) with additional ingredients comprising water and a colorant, thereby forming an ink composition, (i) incorporating the ink composition thus formed into an ink jet printing apparatus;
• and (j) causing droplets of the ink composition to be ejected in an imagewise pattern onto a recording substrate.