Process for preparing pulverulent ethylene polymers

Details Process for preparing pulverulent ethylene polymers Process for preparing pulverulent ethylene polymers

1982-06-14

1984-05-01

Henderson, C. A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528492, 528494, 528495, 528497, 528498, C08F 822

Patent

active

044463111

ABSTRACT:
A process for preparing pulverulent ethylene homopolymers or copolymers with a grain size of less than 200 .mu.m which comprises contacting coarse-particled ethylene homopolymers or copolymers in the form of a suspension with an aliphatic ketone containing 3 to 10 carbon atoms, heating the same with a mixture of said ketone up to a temperature above the softening point of the polymer and thereafter cooling the same.

REFERENCES:
patent: 2870113 (1959-06-01), Jones
patent: 3008946 (1961-11-01), Rhodes
patent: 3154530 (1964-10-01), Mullen
patent: 3634385 (1972-01-01), Walles
patent: 3676419 (1972-07-01), Takehisa
patent: 3814737 (1974-06-01), Gilbert
patent: 3971749 (1976-07-01), Blunt
patent: 4038477 (1977-07-01), Inoue

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