Porous, powdery polypropylene

Details Porous, powdery polypropylene Porous, powdery polypropylene

1983-02-07

1984-06-12

Foelak, Morton

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

521 56, 521 61, 521 62, 521143, 521 60, C08J 926

Patent

active

044541988

ABSTRACT:
Porous, powdery polypropylene is disclosed, obtained by providing a hot solution of polypropylene in pentaerythrol ester as solvent, slowly cooling said solution down to approximately room temperature to provide a solidified mass with or without affecting mechanical size reduction of said solidified mass, and extracting said solidified mass with an extractant in which pentaerythrol is soluble, with or without subsequently removing said solvent to a high degree.

REFERENCES:
patent: 3591524 (1971-07-01), Erikson
patent: 3681237 (1972-08-01), Orban
patent: 3888766 (1975-06-01), De Young
patent: 4187187 (1980-02-01), Turbeville

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