COMPOSITIONS COMPRISING POLY(TRIMETHYLENE TEREPHTHALATE) AND THERMOPLASTIC POLYOLEFIN AND PROCESSES USING THE COMPOSITIONS

摘要

This invention pertains to compositions and processes suitable for recycling post-consumer carpet tiles that comprise poly(trimethylene terephthalate) fibers and thermoplastic polyolefin backings. The compositions disclosed herein comprise poly(trimethylene terephthalate) and thermoplastic polyolefins, compositions which may or may not be mineral filled. Strong tough articles can be prepared by molding or extrusion of typical commercially available carpet tiles when combined with additional amounts of thermoplastic polyolefin, whether filled or unfilled.

主权项

1. A process comprising subjecting a multi-layer article to diminution to form pieces t of a size compatible with the feeding requirements of a melt compounder; feeding said pieces to said melt compounder; causing said pieces to undergo melting in said melt compounder to form a melt; subjecting said melt to mixing under the application of shearing forces; mixing said melt for a period of time necessary for the melt to become homogeneous; and, causing said melt to be removed from said melt compounder; wherein said multi-layer article comprises a thermoplastic polyolefin and poly(trimethylene terephthalate).