Reconstituted polymeric materials derived from post-consumer waste, industrial scrap and virgin resins made by solid state pulverization

Patent · Tue Sep 29 00:00:00 EDT 1998

OSTI ID:871871

Khait, Klementina ^[1]

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1. Skokie, IL

A method of making polymeric particulates 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 compatibilizing agent. The pulverized particulates are directly melt processable (as powder feedstock) and surprisingly yield a substantially homogeneous light color product.

• Research Organization: Northwestern University (Evanston, IL)
• DOE Contract Number: FG51-92R020215
• Assignee: Northwestern University (Evanston, IL)
• Patent Number(s): US 5814673
• Application Number: 08/639344
• OSTI ID: 871871
• Country of Publication: United States
• Language: English

Related Subjects

reconstituted
polymeric
materials
derived
post-consumer
waste
industrial
scrap
virgin
resins
solid
pulverization
method
particulates
material
mixtures
supplied
intermeshing
extruder
screws
rotated
transport
length
subject
shear
in-situ
polymer
compatibilization
incompatible
polymers
uniform
pulverized
produced
addition
compatibilizing
agent
directly
melt
processable
powder
feedstock
surprisingly
yield
substantially
homogeneous
light
color
product
substantially homogeneous
materials derived
polymeric materials
polymeric material
shear pulverization
scrap material
reconstituted polymeric
virgin polymeric
virgin resins
industrial scrap
polymeric scrap
polymeric particulates
post-consumer waste
light color
/521/241/366/