epsilon-CAPROLACTONE → L-lactide epsilon-caprolactone

Participants

Reaction Steps

The procedure of Example II is repeated except that 329 grams of L-(-)-lactide, 17.3 grams of epsilon caprolactone and 3.5 ml of benzene containing 0.7 gram of stannous caprylate are placed in the ampoule, evacuated, sealed and heated for 48 hours at 105° to 144° C. The copolymer thus obtained can be melt-molded by conventional thermoplastic techniques. The copolymer is an opaque, light yellow copolymer having a substantial melting-point endotherm at 165° C. Physical properties are listed in more detail in Table 1.

Provenance & Evidence