Invention Grant
- Patent Title: Modified cellulose-based natural binder for nonwoven fabrics
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Application No.: US16963586Application Date: 2019-01-31
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Publication No.: US12168842B2Publication Date: 2024-12-17
- Inventor: Abdus Salam , Timothy Kistemaker , Kirk Stallsmith , Mark A. Lemere
- Applicant: Glatfelter Corporation
- Applicant Address: US NC Charlotte
- Assignee: Glatfelter Corporation
- Current Assignee: Glatfelter Corporation
- Current Assignee Address: US NC Charlotte
- Agency: Blank Rome LLP
- International Application: PCT/US2019/016031 WO 20190131
- International Announcement: WO2019/152638 WO 20190808
- Main IPC: D04H1/587
- IPC: D04H1/587 ; C08L1/28

Abstract:
Aqueous cellulosic binder comprising modified cellulose (carboxymethylcellulose and/or sodium carboxymethylcellulose), water, and optionally binder modifier (crosslinking agent and/or wet strength agent); with a weight ratio of water modified cellulose of 99.9:0.1 to 1,000:500, with a weight ratio of binder modifier:modified cellulose of 1:2 to 1:1,000; wherein crosslinking agent comprises carboxylic acid having two or more carboxyl groups; and wherein wet strength agent comprises a reactive functional group (halide, chloride, fluoride, hydroxyl). A method of making aqueous cellulosic binder comprising contacting modified cellulose with water to form modified cellulose solution; and optionally contacting modified cellulose solution with binder modifier to form aqueous cellulosic binder. A nonwoven fabric comprising fiber web (85-99.9 wt. %); and cured cellulosic binder (0.1-15 wt. %). An article formed from the nonwoven fabric. A method of making nonwoven fabric comprising forming fiber web; contacting web with aqueous cellulosic binder to form binder impregnated fiber web; and curing to form the nonwoven fabric.
Public/Granted literature
- US20210054548A1 Modified Cellulose-Based Natural Binder for Nonwoven Fabrics Public/Granted day:2021-02-25
Information query
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