Maleic Anhydride → HCID 86751388, compound

Participants

Reaction Steps

A three-liter glass reactor equipped as described in Example 17 is charged, under a stream of nitrogen, with 2-methyl-1,3-propanediol (216 g, 2.4 mol) and maleic anhydride (471 g, 4.8 mol). The mixture is heated at 195°-210° C. for 1.5 to 2 h with no steam in the reflux column to give 2-methyl-1,3-propanediol bismaleate. The reactor is then charged with 2-methyl-1,3-propanediol (115 g) and 497 g of a glycol ester made from 2-methyl-1,3-propanediol (1442 g) and terephthalic acid (1329 g) (2:1 molar ratio of diol to acid used to make the glycol ester).

Provenance & Evidence