Invention Grant
- Patent Title: Wet end chemicals for dry end strength in paper
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Application No.: US15397969Application Date: 2017-01-04
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Publication No.: US09951475B2Publication Date: 2018-04-24
- Inventor: Weiguo Cheng , Mei Liu , Gary S. Furman, Jr. , Robert M. Lowe
- Applicant: ECOLAB USA INC.
- Applicant Address: US MN St. Paul
- Assignee: ECOLAB USA INC.
- Current Assignee: ECOLAB USA INC.
- Current Assignee Address: US MN St. Paul
- Agency: Brinks Gilson & Lione
- Agent Eric D. Babych
- Main IPC: D21H17/37
- IPC: D21H17/37 ; D21H17/29 ; D21H23/14 ; D21H21/20
Abstract:
The disclosure provides methods and compositions for increasing the dry strength of paper. The invention utilizes a tailored strength agent whose size and shape is tailored to fit into the junction points between flocs of a paper sheet. The strength agents is in contact with the slurry for just enough time to collect at the junction points but not so much that it can migrate away from there.
Public/Granted literature
- US20170121909A1 WET END CHEMICALS FOR DRY END STRENGTH IN PAPER Public/Granted day:2017-05-04
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