C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/3080, 400/49
C08F 10/02 (2006.01) C08L 23/04 (2006.01) C08L 23/06 (2006.01)
Patent
CA 1315447
Abstract Disclosed is polyethylene composition having excellent environmental stress cracking resistance (ESCR) and giving molded articles with good surface properties. This composition comprises a blend of two specific types of polyethylene selected with due consideration for their molecular weight distribution in addition to their molecular weights, so that it has excellent melt tension, ESCR and moldability. Accordingly, it can suitably be used in blow molding and extrusion molding to produce molded articles with no shark skin, as well as vessels of very large size. This composition is formed by blending (A) polyethylene obtained according to a two-step polymer- ization process using a Ziegler catalyst containing magnesium and titanium, and (B) high-molecular-weight polyethylene obtained with the aid of a chromium- containing catalyst, in a specified proportion.
554387
Kuroda Nobuyuki
Matsuura Kazuo
Nomiyama Kazutosi
Shimo Yoshiyuki
Tajima Yoshio
Kuroda Nobuyuki
Matsuura Kazuo
Nippon Oil Co. Ltd.
Nomiyama Kazutosi
Shimo Yoshiyuki
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