Patent · US Active

Spray-dried zirconocene catalyst system

US11485802B2 · kind B2 · utility

0Cited by

14References

8Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Wesley R. Mariott · Freeport, US
Roger L. Kuhlman · Lake Jackson, US
Phuong A. Cao · Old Bridge, US
C. Dale Lester · South Charleston, US
Chuan C. He · Dunbar, US
Swapnil B. Chandak · Pearland, US
Pradeep Jain · Lake Jackson, US
John F. Szul · Nitro, US

Key dates

Filing date	Mar 22, 2019
Grant date	Nov 1, 2022
Priority date	—
Expiry date	Jul 6, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F210/16
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.

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