Inventors:
Loren D. Trabert - Richboro PA
Robert L. Post - Ivyland PA
Edward G. Ludwig - Bensalem PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
B29C 4706
Abstract:
A method for preparing a plastic composite by feedblock coextrusion of a molten acrylic based capstock overlying and integrally bonded to an underlying structural plastic ply. The composition of the capstock contains from about 40 to about 88 wt. % of an acrylic polymer having a molecular weight of at least about 125,000 daltons, and from about 12 to about 60 wt. % of an acrylate-based impact modifier resin in the form of discrete multi-layered polymeric particles. The capstock composition has a melt flow index of about 0. 4 to about 0. 75 grams/10 minutes (ASTM Method D-1238, Condition I) and the underlying structural ply has substantially the same melt flow index as that of the capstock composition.