| 摘要 |
Copolymers of racemic lactide and epsilon -caprolactone, delta -valerolactone, gamma -decalactone or beta -hydroxybutyric acid, prepared through conversion of the monomers in the molar ratio lactide to co-reactant of approximately 95-70 to 5-30 with the addition of metallic carboxylates, known per se, as initiator at temperatures of approximately 150 DEG C for a duration of approximately 16 to 48 hours are used for topical application to human or animal skin e.g. as a fluid glove, sunscreen, camouflage aid, insect repellent or barrier. |
