PHOTOCURABLE COMPOSITIONS AND METHOD OF INVESTMENT CASTING

摘要

A method of investment casting that utilizes a pattern produced by stereolithography is disclosed. The pattern has a polymeric matrix that has intersticial spaces dispersed throughout. The spaces have therein a thermoplastic material that flows from the matrix upon heating during the investment casting process, softening the pattern to prevent the thermal expansion of the pattern from cracking or deforming the mold.