C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 51/00 (2006.01) B29C 45/00 (2006.01) B29C 45/60 (2006.01) B29C 49/06 (2006.01) B29C 69/00 (2006.01)
Patent
CA 2095638
2095638 9208596 PCTABS00013 Melt fabrication, without precompounding, of a composition comprising a thermoplastic resin, an acid containing ethylene copolymer and a polymeric grafting agent, is provided by (1) bringing the molten components of the composition together for the first time, (2) intermittently shearing the components, preferably in an injection molding machine (2) or a blow molding machine having a screw (12) with a shearing section (18), and (3) intermittently fabricating in one-step the sheared molten composition into articles of pre-determined shape. The thermoplastic resin is less than 50 volume percent and is at least one continuous phase in the composition. The process is improved by increasing back pressure on the screw used in the injection molding machine, to extend the screw rotation and shear time.
E. I. Du Pont de Nemours And Company
Sim & Mcburney
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