| 摘要 |
<p>The present invention provides in a plastic modeling composition of the type composed of polyvinyl chloride with additive plasticizers and fillers, which is hardenable by the application of heat, the improvement wherein the polyvinyl chloride is of a type having a plasticity which remains substantially constant over a wide range of shearing stresses and which further comprises an anti-swelling agent selected from the group of extenders and diluents is added to prevent the polyvinyl chloride from swelling, said composition being easily manually moldable and retain the easy moldability on prolonged storage and said composition having a plasticity which remains substantially constant over a wide range of shearing stresses.</p> |
