Invention Application
- Patent Title: REDUCED FURFURAL CONTENT IN POLYACRYLIC ACID CROSSLINKED CELLULOSE FIBERS
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Application No.: US15829745Application Date: 2017-12-01
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Publication No.: US20180087216A1Publication Date: 2018-03-29
- Inventor: Angel Stoyanov , Joerg Endres , Holger Beruda , Ludwig Busam
- Applicant: International Paper Company
- Applicant Address: US TN Memphis
- Assignee: International Paper Company
- Current Assignee: International Paper Company
- Current Assignee Address: US TN Memphis
- Main IPC: D21C9/16
- IPC: D21C9/16 ; D21C9/00

Abstract:
Bleached polyacrylic acid crosslinked cellulose fibers with reduced furfural content are disclosed. The reduced furfural content is accompanied by a strong reduction of malodor associated with crosslinked fibers. Methods of furfural reduction include treatment with hydrogen peroxide in the absence of alkaline or other bleaching agents subsequent to curing polyacrylic acid crosslinked cellulose fibers. Some embodiments of treated polyacrylic acid crosslinked cellulose fibers have a furfural content lower than 1.3 ppm. In some embodiments, the reduction of furfural content of the treated crosslinked fibers compared to untreated crosslinked fibers is at least 55%. In some embodiments, furfural content decreases with aging of the treated crosslinked fibers.
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