Patent · US Active

Process for preparing a polyolefin composition

US11104036B2 · kind B2 · utility

1Cited by

10References

19Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Peter Kruempel · Bad Camberg, DE
Harald Prang · Lechenich, DE
Reinhard Kuehl · Bornheim, DE
Elke Damm · Bad Vilbel, DE

Key dates

Filing date	May 28, 2019
Grant date	Aug 31, 2021
Priority date	—
Expiry date	May 12, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2323/08
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A process for continuously preparing a polyolefin composition made from or containing a polyolefin and carbon black in an extruder device. The process includes the steps of supplying polyolefin in form of a polyolefin powder and carbon black to a mixing device; alternatively, (a) measuring the flow rate of the polyolefin powder supplied to the mixing device or (b) measuring the flow rate of the polyolefin pellets prepared in the extruder device; adjusting the flow rate of the carbon black to the mixing device in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder to the mixing device in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the mixture within the extruder device; and pelletizing the polyolefin composition into the polyolefin pellets.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.