Patent · US Active

β-crystalline polypropylenes

US7585909B2 · kind B2 · utility

1Cited by

15References

5Claims

0Family size

Assignee

CHEMTURA CORPORATION · US

Inventors

Qinggao Ma · Naugatuck, US
William A. Wortman · Harwinton, US
Abuzar Syed · Torrington, US
Paul E. Stott · Sandy Hook, US
John M. Wefer · Newtown, US
David J. Sikora · Middlebury, US

Key dates

Filing date	Nov 16, 2006
Grant date	Sep 8, 2009
Priority date	—
Expiry date	Sep 6, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/21
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Disclosed herein are p-urea phenyl derivatives of the formula:wherein R1 and R2 are independently selected hydrocarbyl groups. These derivatives are useful as haze reducing agents in propylene polymers and copolymers.

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