Reconstituted polymeric materials derived from post-consumer waste, industrial scrap and virgin resins made by solid state pulverization
Patent
·
OSTI ID:672624
A method of making polymeric particulates is described wherein polymeric scrap material, virgin polymeric material and mixtures thereof are supplied to intermeshing extruder screws which are rotated to transport the polymeric material along their length and subject the polymeric material to solid state shear pulverization and in-situ polymer compatibilization, if two or more incompatible polymers are present. Uniform pulverized particulates are produced without addition of a compatible agent. The pulverized particulates are directly melt processable (as powder feedstock) and surprisingly yield a substantially homogeneous light color product. 29 figs.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- ;
- Assignee:
- Northwestern Univ., Evanston, IL (United States)
- Patent Number(s):
- US 5,814,673/A/
- Application Number:
- PAN: 8-639,344
- OSTI ID:
- 672624
- Country of Publication:
- United States
- Language:
- English
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