Patent · US Active

Functionalized nonwoven article

US8328023B2 · kind B2 · utility

10Cited by

69References

22Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Douglas E. Weiss · Overland Park, US
Clinton P. Waller, Jr. · White Bear Lake, US
Michael R. Berrigan · Oakdale, US
Andrew W. Rabins · Windom, US
Jeffrey A. Lucas · Windom, US
Kannan Seshadri · Woodbury, US
Catherine A. Bothof · Stillwater, US

Key dates

Filing date	Nov 18, 2009
Grant date	Dec 11, 2012
Priority date	—
Expiry date	Dec 25, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L51/08
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A grafted nonwoven substrate is disclosed having average fiber sizes of 0.7 to 15 microns, and a void volume of 50 to 95%, and a polymer comprising cationic aminoalkyl(meth)acryloyl monomer units grafted to the surface of the nonwoven substrate. The article may be used as a filter element to purify or separate target materials, such as oligonucleotides or monoclonal antibodies (MAb), from a fluid mixture.

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