Manufacture of high-pressure polyethylene

Details Manufacture of high-pressure polyethylene Manufacture of high-pressure polyethylene

1977-11-30

1979-12-04

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526213, 526352, C08F21002

Patent

active

041773403

ABSTRACT:
A process for the manufacture of ethylene polymers by polymerizing ethylene under high pressures and at high temperatures in the presence of from 0.01 to 0.5 percent by weight of an alkyl ester (alkyl being of 1 to 8 carbon atoms) of an alkenemonocarboxylic acid of 3 or 4 carbon atoms. n-Butyl acrylate is a particularly suitable polymerization activator. Although the start temperature of the ethylene polymerization is relatively low, there is no difference in mechanical and optical properties of a blown film manufactured from the resulting ethylene polymer and of a blown film of pure polyethylene.

REFERENCES:
patent: 2953551 (1960-09-01), White
patent: 3089897 (1963-05-01), Balmer et al.
patent: 3132120 (1964-05-01), Graham et al.
patent: 3141870 (1964-07-01), Deex
patent: 3714135 (1973-01-01), Pfannmueller et al.
patent: 3726842 (1973-04-01), Trieschmann et al.

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