epsilon-CAPROLACTONE → L-lactide epsilon-caprolactone

Participants

Reaction Steps

The procedure of Example II is repeated except that 490 grams of L-(-)-lactide is heated with 15.2 grams of epsilon caprolactone and 5 ml of benzene containing 1 gram of stannous caprylate. After 64 hours at 138° to 142° C., an opaque, highly crystalline, brittle copolymer is obtained having a strong DTA endotherm at 182° C. Physical properties are listed in more detail in Table 1.

Provenance & Evidence