Invention Grant
- Patent Title: Compositions and methods for treating filler in papermaking
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Application No.: US15765137Application Date: 2016-09-30
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Publication No.: US10669672B2Publication Date: 2020-06-02
- Inventor: Qinglong Rao
- 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: Merchant & Gould P.C.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@7838bf92
- International Application: PCT/CN2016/101171 WO 20160930
- International Announcement: WO2017/054774 WO 20170406
- Main IPC: D21H17/00
- IPC: D21H17/00 ; D21H17/37 ; D21H17/69 ; D21H17/29 ; D21H17/28 ; D21H21/18 ; D21H17/67 ; D21H17/43 ; D21H17/45 ; D21H17/68
Abstract:
Method of papermaking comprises: treating filler with a starch and a flocculant to form a filler floc; combining the filler floc with the cellulose fiber stock; and forming a paper mat from the combination of filler floc and cellulose fiber stock. The method have been found to result in larger particle sizes for the filler flocs, improved shear stability, and improved sheet strength in the paper mat.
Public/Granted literature
- US20190055696A1 COMPOSITIONS AND METHODS FOR TREATING FILLER IN PAPERMAKING Public/Granted day:2019-02-21
Information query
