| 摘要 |
<p>Mercaptoalkanoic acids and thiodialanoic acids are reacted with a poly(oxyalkylene)-polyol to form poly(oxyalkylene)-polyester-poly(monosulfide)-polythiols which are useful as encapsulating materials and mold compositions when oxidatively coupled or curd. In one embodiment, a polymeric reaction product, either in the uncured state or partially cured state, is used for the preparation of flexible molds from which regularly or irregularly shaped objects can be made.</p> |
