Process for the compounding of polymers

Details Process for the compounding of polymers Process for the compounding of polymers

2007-08-24

2011-10-11

Wollschlager, Jeffrey (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

C264S085000, C264S211000, C264S211230

Reexamination Certificate

active

08034269

ABSTRACT:
A compounding process is disclosed. The process includes (i) melt blending in an extruder at least two polymeric resins to produce a mixture that includes at least one resin that dissociates to yield monomers and/or oligomers upon heating, said mixture containing less than 1 percent of volatile components, (ii) introducing into said extruder an inert entraining agent, and (iii) removing said entraining agent together with said volatile components from said extruder. The extruder includes at least one melting zone, at least two degassing zones and at least one mixing zone. The end product has a particularly low content of residual solvent and at the same time a low content of monomers or oligomers.

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