Olefin-based thermoplastic alloy, process for making the...

Details Olefin-based thermoplastic alloy, process for making the... Olefin-based thermoplastic alloy, process for making the...

2005-03-22

2005-03-22

Woodward, Ana (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C428S098000, C428S475500, C428S500000, C525S106000, C525S166000, C525S177000, C525S179000, C525S184000, C525S185000, C525S207000

Reexamination Certificate

active

06870005

ABSTRACT:
A polymeric composition and process for making the same suitable for injection molding processes and procedures containing an olefinic polymer component selected from at least one a group which includes polyalkylenes, copolymers of polyalkylenes and a non-olefinic thermoplastic. The non-olefinic and olefinic polymeric components are present in random orientable locations in the initial polymeric composition. When injection molded against a temperature gradient, the resulting workpiece composed of the composition has distinctive regions of elevated non-olefinic concentration proximate the outwardly oriented surface and distinctive regions of elevated olefinic polymeric concentration proximate to interior regions of the workpiece. The non-olefinic thermoplastic may be at least one of thermoplastic polyamides, thermoplastic polyolefins and thermoplastic polycarbonates.

REFERENCES:
patent: 4410482 (1983-10-01), Subramanian
patent: 5006601 (1991-04-01), Lutz et al.
patent: 5073590 (1991-12-01), Abe et al.
patent: 5234993 (1993-08-01), Huynh-Ba
patent: 5602200 (1997-02-01), Wissmann
patent: 5874176 (1999-02-01), Kamei et al.
patent: 6117561 (2000-09-01), Jacquemet et al.

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