Process for the treatment of polypropylene

Details Process for the treatment of polypropylene Process for the treatment of polypropylene

1993-03-04

1993-11-23

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525198, 525240, C08F 850

Patent

active

052644936

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.

REFERENCES:
patent: 3013003 (1961-12-01), Maragliano et al.
patent: 3755227 (1973-08-01), Gray et al.
patent: 3887534 (1975-06-01), Baba et al.
patent: 4247652 (1981-01-01), Matsuda et al.
patent: 4342844 (1982-08-01), Torenbeek et al.
patent: 4451589 (1984-05-01), Morman et al.
patent: 4710317 (1987-12-01), Tabata et al.
patent: 4833195 (1989-05-01), Adur et al.
patent: 4940736 (1990-07-01), Alteepping et al.
Rubber Technology, edited by Maurice Morton, Third Ed., Van Nostrand Reinhold, N.Y., 1987, pp. 260-263.

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