US 10,851,190 B2 · Mono- and multi-layer films and articles made therefrom

Abstract

Mono- and multi-layer films comprising a polyethylene composition which comprises the reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via a solution polymerization process in at least one reactor; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I2, measured according to ASTM D 1238 (2.16 kg @ 190° C.), from 0.1 to 5 g/10 min; density, measured according to ASTM D-792, from 0.910 to 0.935 g/cc; melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg @ 190° C.), from 6 to 7.4; and molecular weight distribution, (Mw/Mn) from 2.5 to 3.5 are provided. Also provided are articles made from the mono- and/or multi-layer films.

Claims7

Dependent claims

A rotomolded article comprising a polyethylene composition characterized by the following properties:

(a) a melt index, I2, measured according to ASTM D1238 (2.16 kg at 190° C.), from 0.1 to 5 g/10 min;
(b) density, measured according to ASTM D-792, from 0.910 to 0.925 g/cc;
(c) melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg at 190° C.), from 6 to 7.4;
and
(d) molecular weight distribution, (Mw/Mn) from 2.5 to 3.5.

2 more elements

A method of forming a rotomolded article, the method comprising:

forming a rotomolded article from a polyethylene composition, the polyethylene comprising the solution polymerized reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst, wherein the polyethylene composition is characterized by one or more of the following properties:
(a) a melt index, I2, measured according to ASTM D1238 (2.16 kg at 190° C.), from 0.1 to 5 g/10 min;
(b) density, measured according to ASTM D-792, from 0.910 to 0.925 g/cc;
(c) melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg at 190° C.), from 6 to 7.4;
and
(d) molecular weight distribution, (Mw/Mn) from 2.5 to 3.5.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/410,484Filed 13 May 2019 · continuation

Priority

1 Jun 2011

Published

US 2019/0263952 A129 Aug 2019

Granted

1 Dec 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C08F 110/02
Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: ethene
C08F 4/685
Vanadium, niobium, tantalum or compounds thereof: vanadium or compounds thereof in combination with titanium or compounds thereof
C08F 10/02
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: ethene
C08F 210/16
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: copolymers of ethene with alpha-alkenes, e.g. EP…

Family

Application61/491,924Us provisional application · filed 1 Jun 2011

PCT/US2012/039140Parent of this continuation-in-part · filed 23 May 2012

Application14/175,264Parent of this continuation · filed 7 Feb 2014

US 2019/0263952 A1Pre-grant publication · published 29 Aug 2019

US 10,308,741 B2Parent of this continuation

Application14/116,070Parent of this continuation-in-part

US 9,255,160 B2Parent of this continuation-in-part

Application14/175,264Parent of this continuation-in-part

US 2014/0080970 A1Published application

US 2014/0178614 A1Published application

US 10,851,190 B2This patent

From the US filing history. Foreign family members aren’t listed.

Mono- and multi-layer films and articles made therefrom

Life of this patent

Mono- and multi-layer films and articles made therefrom

Life of this patent

Abstract

Claims7