Pattern forming thermoplastic compositions containing cross- linked poly(methylmethacrylate), patterns thereof and processes related thereto

摘要

A two-phase thermoplastic composition adapted for forming thermoplastic patterns. The composition comprises an organic thermoplastic pattern material and at least about 5% by weight of discrete particles of cross-linked poly(methylmethacrylate) that are physically stable at temperatures above 130° F. Also disclosed are investment casting patterns of such composition and processes utilizing such composition.