Sodium Chloride → Epichlorohydrin

Participants

Reaction Steps

A suitable reaction vessel is charged with 107 parts of a terpolymer of acrylic ester, vinyl acetate and maleic anhydride (0.6 COOH equivalents, e.g. Belclene® 283), 90 parts of water and 4 parts of NaCl. After 90 pans of epichlorohydrin have been added, the reaction mixture is heated to 80°-85° C. for about 1 hour, cooled down to room temperature and neutralised with sodium hydroxide solution (pH about 6.8). Excess epichlorohydrin and dichloropropanol formed in the course of the reaction are then distilled off azeotropically. The product is adjusted to contain 25% of polymer, 25% of 3-chloro-1,2-propanediol and 50% of water.

Provenance & Evidence