Patent · US Active

Catalyst systems and polymer resins having improved barrier properties

US8501651B2 · kind B2 · utility

18Cited by

48References

20Claims

0Family size

Assignee

Chevron Phillips Chemical Company LP · US

Inventors

Errun Ding · Bartlesville, US
Albert P. Masino · Hamilton, US
Joel L. Martin · Bartlesville, US
Youlu Yu · Bartlesville, US

Key dates

Filing date	Sep 24, 2010
Grant date	Aug 6, 2013
Priority date	—
Expiry date	Feb 25, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2420/03
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A catalyst system comprising a half-sandwich chromium complex, an activator support and an optional cocatalyst. A compound of formula Cp′Cr(Cl)2(Ln), where Cp′ is η5—C5H4CH2CH2CH═CH2 and Ln is pyridine, THF or diethylether. A compound of formula Cp″Cr(Cl)2(Ln), where Cp″ is η5—C5H4C(Me)2CH2CH2CH═CH2 and Ln is pyridine, THF or diethylether.

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