Christopher U Holm

US Patent:

20190153664, May 23, 2019

Filed:

Nov 30, 2018

Appl. No.:

16/205645

Inventors:

- Columbus IN, US
- Minneapolis MN, US
Christopher W. Macosko - Minneapolis MN, US
Kan Wang - Cookeville TN, US
William C. Haberkamp - Cookeville TN, US
Christopher E. Holm - Stoughton WI, US

Assignee:

CUMMINS FILTRATION IP, INC. - Columbus IN
Regents of the University of Minnesota - Minneapolis MN

International Classification:

D06M 13/33
D06M 13/477
D04H 1/435
D04H 3/011
D06M 11/38
D04H 1/56
D06M 14/14
F01M 13/04

Abstract:

Described herein is a continuous process fear modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization such as fluorination process can be continuous, following the melt blowing/spinning or spun-bonding process. Also described is a nonwoven PBT fiber mat obtained by the surface modification process. Further described is a filtration device comprising the nonwoven PBT fiber mat.

US Patent:

20170030011, Feb 2, 2017

Filed:

Jan 2, 2015

Appl. No.:

15/303398

Inventors:

- Columbus IN, US
- Minneapolis MN, US
Christopher W. Macosko - Minneapolis MN, US
Kan Wang - Cookeville TN, US
William C. Haberkamp - Cookeville TN, US
Christopher E. Holm - Stoughton WI, US

Assignee:

Cummins Filtration IP, Inc. - Columbus IN
Regents of the University of Minnesota - Minneapolis MN

International Classification:

D06M 13/33
D04H 3/011
D04H 1/435
D04H 1/56
D06M 11/38
F01M 13/04

Abstract:

Described herein is a continuous process for modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization such as fluorination process can be continuous, following the melt blowing/spinning or spun-bonding process. Also described is a nonwoven PBT fiber mat obtained by the surface modification process. Further described is a filtration device comprising the nonwoven PBT fiber mat.