Title:
PRODUCTION OF ETHYLENE POLYMER FOR EXTRUSION COATING IN THE PRESENCE OF POLYFUNCTIONAL ORGANIC PEROXIDE POLYMERIZATION INITIATOR
Document Type and Number:
Japanese Patent JPH05339318
Kind Code:
A
Abstract:
PURPOSE:To obtain the title polymer reduced in the neck-in phenomenon by performing radical polymerization in the presence of a chain transfer agent and a polyfunctional organic peroxide polymerization initiator at a high temperature under high pressure. CONSTITUTION:A process for producing an ethylene polymer by radical polymerization at high temperature under high pressure in the presence of a chain transfer agent, wherein the polymerization is performed in the presence of a polyfunctional peroxide polymerization initiator, e.g. a dialkyl peroxide containing at least two peroxide bonds in the molecule, a peroxycarbonate, an alkyl peroxyester or a peroxy ketal. This process can movide a desired ethylene polymer for extrusion coating markedly reduced in the neck-in phenomenon.
Inventors:
ARAI KOICHI
SAKATA HIKARI
SUGIHARA KEIJI
SAKATA HIKARI
SUGIHARA KEIJI
Application Number:
JP16989692A
Publication Date:
December 21, 1993
Filing Date:
June 05, 1992
Export Citation:
Assignee:
TOSOH CORP
International Classes:
B29C47/00; C08F4/28; C08F4/34; C08F10/00; C08F10/02; (IPC1-7): C08F10/02; B29C47/00; C08F4/34