Patent · US Active

Recoverable polymer-bound homogeneous catalysts for catalytic chain transfer process

US8030422B2 · kind B2 · utility

0Cited by

18References

34Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Henry Edward Brynzda · Avondale, US
Michael Charles Grady · Oaklyn, US
Sigridur Soley Kristjansdottir · Wilmington, US
Christina M. Older · Wilmington, US
Matthew Arthur Page · Wilmington, US
Joachim C. Ritter · Wilmington, US
Wilson Tam · Boothwyn, US

Key dates

Filing date	Aug 16, 2006
Grant date	Oct 4, 2011
Priority date	—
Expiry date	Apr 9, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S526/904
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Disclosed herein are novel polymer-tethered ligands, metal complexes comprising these ligands, and the use of these complexes as chain transfer catalysts to control the molecular weight of oligomeric and polymeric materials produced in a radical polymerization process. The materials made by the processes disclosed herein have significantly reduced color, making them suitable for a wide range of color-critical end-uses, including automotive coatings.

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