| 摘要 |
<p>Optically active lactides are produced by heating an optically active acid at 100 DEG to 250 DEG C. under sub-atmospheric pressure, in the presence of 0.01 to 5% by weight of a titanium alkoxide containing up to 12 carbon atoms in the alkoxide radical. U.S.A. Specification 2,758,987 is referred to.</p> |
