3m Innovative Properties Company

Solventum Intellectual Properties Company

Andrew W Vail

Jerald K Rasmussen

George W Griesgraber

Steven P Swanson

Andrew S Waller

Jonathan F Hester

John J Schmidt

Matthew T Scholz

Naiyong Jing

Ramesh C Kumar

Michael R Berrigan

Naimul Karim

Tonya D Bonilla

Catherine A Bothof

Ranjani V Parthasarathy

Badri Veeraraghavan

Semra Colak Atan

Joshua Erickson

Francis E Porbeni

Petra L Kohler Riedi

Michelle M Mok

Kelvin J Witcher

Jodi L Connell

Federica Sgolastra

Francois Ahimou

Assumpta A G Bennaars-Eiden

Aniruddha A Upadhye

Catherine D Heapy

Gregory M Jellum

Hsi-Chou Liu

Raha A Been

Alexei M Voloshin

Eric J Olson

Robert A Schmitz

Ali E Ozcam

Jerald K Rasumssen

Described herein is method for testing an ion exchange chromatography device. The method includes monitoring both a binding and a non-binding species and determining their breakthrough point to determine a net breakthrough value. The method can be used to determine the integrity of the chromatography device, ensure that the chromatography device possesses the expected adsorbent capacity, and/or determine viral clearance of the chromatography device.

Method for testing a chromatography device used for ion exchange

An article, and method of use, wherein the article includes: a substrate; a cationic coating bound to the substrate, wherein the cationic coating includes a guanidinyl-containing polymer that is crosslinked on the substrate; wherein the guanidinyl-containing polymer is of the following Formula (I), wherein: Ris a H, C-C(hetero)alkyl, C-C(hetero)aryl, or Polymer; each Ris independently H, C-C(hetero)alkyl, or C-C(hetero)aryl; each Ris H, C-C(hetero)alkyl, C-C(hetero)aryl, or N(R); Polymer is a residue of an aminopolymer chain; m is 1 or 2; and x is an integer of at least 1; and wherein the guanidinyl-containing polymer is crosslinked with an amine-reactive polyepoxy compound having pendant —OH groups.

Articles containing a crosslinked guanidinyl-containing polymer and uses thereof

A wipe article includes a substrate, a cationic coating disposed on a surface of the substrate, distributed throughout the substrate, or both. The cationic coating contains a guanidinyl-containing polymer that is crosslinked and bound to the substrate. The substrate includes sponge, nonwoven fabric, or woven fabric. The wipes are useful for removing microorganisms from a microorganism-contaminated surface and also for reducing re-contamination of the cleaned surface or transfer to another surface of the removed microorganisms.

Wipe with a guanidinyl-containing polymer

An article is provided. The article comprises a nonwoven substrate having a copolymer grafted thereto, and a dried coating adhered to the substrate. The copolymer comprises interpolymerized monomer units of a quaternary ammonium-containing ligand monomer, an amide monomer, and an oxy monomer. The coating comprises a plurality of test microorganisms. Optionally, the coating further comprises a water-soluble or water-dispersible polymeric binding agent. A process challenge device comprising a body having a hollow channel with said article fixed disposed therein is also provided. Methods of using the article or the process challenge device for determining the efficacy of a disinfection process are also provided.

Article and methods to determine efficacy of disinfection process

Disclosed herein are methods that include contacting a skin surface with a first liquid composition; and then contacting in the skin surface with a cationic coated article loaded with a second liquid composition, while at least some portion of the first liquid composition remains on the skin surface, wherein one or both of the first liquid composition or the second liquid composition includes acrylate copolymer particles dispersed therein, the acrylate copolymer particles including the reaction product of a reaction mixture, the reaction mixture including monomers, the monomers including from about 5 wt % to about 50 wt % of at least one high Tg monomer where the wt % of the high Tg monomer is with respect to the total weight of the monomers in the reaction mixture; and from about 20 wt % to about 80 wt % of at least one low Tg monomer where the wt % of the low Tg monomer is with respect to the total weight of the monomers in the reaction mixture, wherein the particles have a number average diameter of at least about 100 nm and wherein at least one and only one of the first or the second composition comprises greater than or equal to 60 wt % of at least one alcohol.

Methods of removing spores comprising alcohol, acrylate copolymer particles, and a cationic coated article

An article that includes a functionalized copolymer and the use thereof, particularly in a process for binding biomaterials, such as in a process for separating aggregated proteins from monomeric proteins in a biological solution; wherein the article includes: a) a porous substrate; and b) a copolymer covalently attached to the porous substrate, the copolymer comprising a hydrocarbon backbone and a plurality of pendant groups attached to the hydrocarbon backbone, wherein 1) each of a first plurality of pendant groups comprises: (a) at least one acidic group or salt thereof; and (b) a spacer group that directly links the at least one acidic group or salt thereof to the hydrocarbon backbone by a chain of at least 6 catenated atoms; and 2) each of a second plurality of pendant groups comprises: (a) at least one acidic group or salt thereof; and (b) a spacer group that directly links the at least one acidic group or salt thereof to the hydrocarbon backbone by a chain of at least 6 catenated atoms; and wherein the first plurality of pendant groups are different than the second plurality of pendant groups; and wherein a mole ratio of the first plurality of pendant groups to the second plurality of pendant groups is in a range of 95:5 to 5:95.

Functionalized copolymers and use thereof

A method is provided. The method includes providing an article, the article including a nonwoven substrate having a copolymer grafted thereto, the copolymer including interpolymerized monomer units of a quaternary ammonium-containing ligand monomers; an amide monomer; an oxy monomer; and a coating on the nonwoven substrate, the coating including a plurality of test microorganisms, an enzyme or a second substrate; and contacting the article with a detection medium for a period of time.

Methods to detect microorganisms

A method of purifying a biological composition includes: disposing loose cationic ligand-functionalized staple fibers and a biological composition within a mixing volume of a vessel; agitating the biological composition and the loose cationic ligand-functionalized staple fibers while they are in intimate contact with each other within the mixing volume to provide modified fibers and a purified biological composition; and separating at least a portion of the purified biological composition from the modified fibers and any loose cationic ligand-functionalized staple fibers with which it is in contact. The loose cationic ligand-functionalized staple fibers have a modified surface layer comprising a grafted acrylic polymer comprising 10 to 100 percent by weight of a cationically-ionizable monomer unit. An article for purifying a biological composition includes: a vessel having a mixing volume disposed therein; and the loose cationic ligand-functionalized staple fibers disposed within the mixing volume.

Method of purifying a biological composition and article therefor

Growing community of inventors

Woodbury, MN, United States of America

Andrew W Vail