Succinic anhydride → Butanedioic acid, 1-octadecyl ester, calcium salt (2:1)

Participants

Reaction Conditions

Reaction Steps

696.4 g of a commercially available technical stearyl alcohol were introduced into a reaction vessel and heated to 80° C. 256.6 g succinic anhydride were then added; the reaction mixture was heated to 130° C. The reaction was mildly exothermic; the temperature rose to 140° C. The reaction mixture was then stirred for 30 minutes at 130 to 140° C.; the acid value of the reaction mixture was 151 to 152. 94.3 g plus 2.8 g (3% excess) calcium hydroxide Were then introduced in portions over a period of 30 minutes at temperatures of 145° to 150° C. The reaction mixture was kept at that temperature for 4 hours, a light vacuum being applied at the beginning of the reaction. The vacuum was increased to 500 hPa after 30 minutes, to 32 hPa after 1 h and 39 hPa after 2 h and was left at that value until the end of the 4-hour reaction time.

Provenance & Evidence