Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1996-11-04
1998-01-20
Thurlow, Jeffery R.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
264476, 264492, 264143, 428400, B29B 906
Patent
active
057099413
ABSTRACT:
A process for rapidly improving the flowability, in pellet form, of a molding composition is disclosed. Accordingly, the crystalline content of an amorphous or a semi-amorphous version of a crystallizable thermoplastic resin is increased by subjecting the resin to infra-red radiation to an extent which induces the formation of crystals in the irradiated amorphous resin or the increase of the level of crystals in the semi-amorphous irradiated resins. The resin modified by the inventive process is rendered more suitable for processing: in dried, pellet-form, the modified resin is characterized by its improved flowability. An article molded from the thus modified resin exhibits better properties than does a corresponding article made from a unmodified resins which has been subjected to similar drying conditions.
REFERENCES:
patent: 3846522 (1974-11-01), Goldman
patent: 3974250 (1976-08-01), Cottis et al.
patent: 4067942 (1978-01-01), Wilson
patent: 4594204 (1986-06-01), Heidenreich et al.
Bayer Corporation
Gil Joseph C.
Preis Aron
Thurlow Jeffery R.
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