Importance

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Abstract

First and second virgin polymers, not normally miscible when combined in one or more conventional melt-processing means, are combined in a known melt-processing means having mechanical vibration, referred to as a TekFlow.RTM. 'processor' in which the polymers are extensively shear-thinned, substantially disentangled and stress-fatigued. A process in which melts of each virgin polymer are separately modified, mixed and melt-processed in a conventional extruder, is also effective if the melt of one polymer, modified in a processor, is mixed with virgin melt before being modified in another processor. In each embodiment, the resulting blend is unexpectedly found to be a single phase, that is, a miscible blend.

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First Claim