Patent · US Expired

Process for the treatment of polypropylene

US5264493A · kind A · utility

15Cited by

9References

14Claims

0Family size

Assignee

Fina Research, S.A. · BE

Inventors

Claude Palate · Ferrara, IT
Alain M. F. Prevot · Fécamp, FR
Rene F. Venneman · Châtelet, BE

Key dates

Filing date	Mar 4, 1993
Grant date	Nov 23, 1993
Priority date	—
Expiry date	Mar 4, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2207/14
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Isotactic polypropylene and/or ethylene-propylene copolymers are blended with 5-65 wt % of atactic polypropylene and up to 20 wt % of the total blend of a thermosensitive agent. The process is particularly adapted for the incorporation of prodegradents used for reducing the molecular weight and its distribution, thereby producing polyethylene particularly suitable for fiber or film formation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.