JPS56155226A - Manufacture of radiation-bridged polyolefin - Google Patents

Manufacture of radiation-bridged polyolefin

Info

Publication number
JPS56155226A
JPS56155226A JP5793880A JP5793880A JPS56155226A JP S56155226 A JPS56155226 A JP S56155226A JP 5793880 A JP5793880 A JP 5793880A JP 5793880 A JP5793880 A JP 5793880A JP S56155226 A JPS56155226 A JP S56155226A
Authority
JP
Japan
Prior art keywords
radiation
bridged
alpha
irradiation
ethylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5793880A
Other languages
Japanese (ja)
Other versions
JPH0317854B2 (en
Inventor
Mitsuharu Miyoshi
Fumihiko Yazaki
Takashi Inoue
Kazuo Matsuura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Nippon Oil Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Oil Corp filed Critical Nippon Oil Corp
Priority to JP5793880A priority Critical patent/JPS56155226A/en
Publication of JPS56155226A publication Critical patent/JPS56155226A/en
Publication of JPH0317854B2 publication Critical patent/JPH0317854B2/ja
Granted legal-status Critical Current

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  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

PURPOSE: To obtain a radiation-bridged polyolefin having a high gel fraction, a small heat deformation rate, and excellent heat resistance, by subjecting an ethylene- alpha-olefin copolymer obtained in the presence of a specific catalyst in a gaseous phase to the irradiation of a radiation.
CONSTITUTION: Ethylene and a C3WC12 alpha-olefin are copolymerized in the presence of a catalyst composed of a solid substance containing Mg and Ti or V (e.g., MgO-RX-TiCl4, wherein R is an organic group and X is a halogen) and an organo-Al compound (e.g., triethylaluminium) in a gaseous phase without solvent in order to obtain an ethylene-alpha-olefin copolymer having a density of 0.890W0.945 and a melt index of 0.01W5. Then, the copolymer thus obtained is subjected to the irradiation of a radiation to manufacture a bridged polyolefin. The bridged polyolefin obtained by this method is excellent in mechanical, chemical, and thermal properties, in contrast with the conventional bridged PE obtained by exposing low-density PE manufactured by the conventional high-pressure method to the irradiation of a radiation, having defects, such as limitation to processing speed and low heat resistance.
COPYRIGHT: (C)1981,JPO&Japio
JP5793880A 1980-05-02 1980-05-02 Manufacture of radiation-bridged polyolefin Granted JPS56155226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5793880A JPS56155226A (en) 1980-05-02 1980-05-02 Manufacture of radiation-bridged polyolefin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5793880A JPS56155226A (en) 1980-05-02 1980-05-02 Manufacture of radiation-bridged polyolefin

Publications (2)

Publication Number Publication Date
JPS56155226A true JPS56155226A (en) 1981-12-01
JPH0317854B2 JPH0317854B2 (en) 1991-03-11

Family

ID=13069960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5793880A Granted JPS56155226A (en) 1980-05-02 1980-05-02 Manufacture of radiation-bridged polyolefin

Country Status (1)

Country Link
JP (1) JPS56155226A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61283626A (en) * 1985-06-07 1986-12-13 Sumitomo Chem Co Ltd Water-proof sheet excellent in heat resistance
JPS63146936A (en) * 1986-12-10 1988-06-18 Sumitomo Chem Co Ltd Production of ethylene-based crosslinked copolymer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150341A (en) * 1974-10-30 1976-05-01 Japan Atomic Energy Res Inst Echirenkeijugotaino hoshasenhashikakehoho
JPS5552309A (en) * 1978-10-11 1980-04-16 Nippon Oil Co Ltd Preparation of copolymer
JPS5554309A (en) * 1978-10-18 1980-04-21 Mitsui Petrochem Ind Ltd Preparation of ethylene copolymer
JPS5554308A (en) * 1978-10-17 1980-04-21 Nippon Oil Co Ltd Preparation of copolymer
JPS5558210A (en) * 1978-10-26 1980-04-30 Nippon Oil Co Ltd Production of copolymer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150341A (en) * 1974-10-30 1976-05-01 Japan Atomic Energy Res Inst Echirenkeijugotaino hoshasenhashikakehoho
JPS5552309A (en) * 1978-10-11 1980-04-16 Nippon Oil Co Ltd Preparation of copolymer
JPS5554308A (en) * 1978-10-17 1980-04-21 Nippon Oil Co Ltd Preparation of copolymer
JPS5554309A (en) * 1978-10-18 1980-04-21 Mitsui Petrochem Ind Ltd Preparation of ethylene copolymer
JPS5558210A (en) * 1978-10-26 1980-04-30 Nippon Oil Co Ltd Production of copolymer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61283626A (en) * 1985-06-07 1986-12-13 Sumitomo Chem Co Ltd Water-proof sheet excellent in heat resistance
JPS63146936A (en) * 1986-12-10 1988-06-18 Sumitomo Chem Co Ltd Production of ethylene-based crosslinked copolymer

Also Published As

Publication number Publication date
JPH0317854B2 (en) 1991-03-11

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