Hollow molded articles and process for manufacturing them

Details Hollow molded articles and process for manufacturing them Hollow molded articles and process for manufacturing them

1997-08-22

1999-01-12

Wilson, Donald R.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 3692, 525240, B29D 2200, B29D 2300, C08L 2306, C08L 2308

Patent

active

058584919

ABSTRACT:
Hollow molded articles prepared from a molding composition comprising:
(A) from 95 to 60 percent by weight, based on the weight of (A) and (B), of an ethylene polymer having a density of 0.955 g/cm.sup.3 or higher, a melt index from 0.3 to 10 g/10 min, a melt index ratio I.sub.21 /I.sub.2 of from 40 to 80, and a polydispersity of from 1.8 to 10, the ethylene polymer being selected from the group consisting of i) high density ethylene homopolymers and ii) high density ethylene copolymers prepared by slurry or gas phase polymerization in the presence of a Ziegler or Phillips catalyst or prepared by polymerization in the presence of a transition metal compound catalyst containing a cyclopentadienyl or cyclopentadienyl derivative moiety; and
(B) from 5 to 40 percent by weight, based on the weight of (A) and (B), of a homogeneous linear or substantially linear ethylene interpolymer having a density from 0.85 to 0.93 g/cm.sup.3, a melt index from 0.5 to 5 g/10 min, and a polydispersity of from 1.8 to 2.5 , the ethylene interpolymer being an interpolymer of at least ethylene and an .alpha.-olefin;
wherein the composition has a density from 0.94 to 0.962 g/cm.sup.3 ;
and a process of manufacturing hollow molded articles by molding such composition are claimed.

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