Azobisisobutyronitrile → HCID 173649, compound

Participants

Reaction Steps

A separable flask fitted with a reflux condenser was charged with 98 parts of maleic anhydride, 300 parts of methyl ethyl ketone, 84 parts of hexene-1 and 4 parts of azobisisobutyronitrile, and the mixture was reacted with stirring in an atmosphere of nitrogen at 65°-70° C. After carrying out the reaction for 10 hours, the system was cooled to room temperature and cold methanol was added to precipitate a polymer, which was separated, collected and dried under reduced pressure to obtain 108 parts of a hexene-1-maleic anhydride copolymer (mol ratio 1:1, MW = 3800). A mixture of 91 parts of the so obtained copolymer and 400 parts of a 10% aqueous sodium hydroxide solution was stirred at 80°-90° C. to obtain an aqueous solution of a water-soluble hexene-1-sodium maleate copolymer (hereinafter referred to as water-soluble salt (II-2) or Na salt of (C6 -MA) copolymer).

Provenance & Evidence