US 10,208,144 B2Granted

Polymerization process in the presence of an antistatic composition

AssigneeBasell Polyolefine GmbH

InventorsShahram Mihan, Gerhardus Meier, Ulf Schueller, Michael Schiendorfer, Jens Wiesecke

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Abstract

A process for the preparation of polyolefins by polymerizing olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatically acting composition in a polymerization reactor, wherein the antistatically acting composition is a mixture comprising an oil-soluble surfactant and water and the use of an antistatically acting composition comprising an oil-soluble surfactant and water as antistatic agent for the polymerization of olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.

Claims11

Dependent claims

A process for the preparation of polyolefins comprising polymerizing olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatic composition in a polymerization reactor, wherein the antistatic composition is a mixture comprising:

20 to 69.9 wt %, based on the total weight of the antistatic composition, of an oil-soluble surfactant, wherein the oil-soluble surfactant is a strong organic acid of a pKa of equal to or less than +4 comprising a hydrocarbyl group of from 6 to 40 carbon atoms,
0 to 15 wt %, based on the total weight of the antistatic composition, of an alcohol,
30 to 89.9 wt %, based on the total weight of the antistatic composition, of an aliphatic hydrocarbon, and
0.1 to 2 wt %, based on the total weight of the antistatic composition, of water.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/677,814Filed 15 Aug 2017 · continuation
Priority: EP 1317140811 Jun 2013
Published: US 2018/0009916 A111 Jan 2018
Granted: 19 Feb 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

C08F 110/02
Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: ethene
C08F 10/02
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: ethene
H01B 1/12
Mainly consisting of other non-metallic substances: organic substances
C08F 2410/02
Features related to the catalyst preparation, the catalyst use or to the deactivation of the catalyst: anti-static agent incorporated into the…

Family

PCT/EP2014/061977Parent of this continuation · filed 10 Jun 2014
US 2018/0009916 A1Pre-grant publication · published 11 Jan 2018
Application14/897,597Parent of this continuation
US 9,771,439 B2Parent of this continuation
US 2016/0130376 A1Published application
US 10,208,144 B2This patent

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