EP0213415A2
Expired / Lapsed
EP
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Method for preparing modified cellulosic fibers
Assignee: Kimberly Clark Tissue Co
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Filing: 1986-08-01
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Granted: —
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Expires: 2006-08-01
Abstract
Abstract Disclosed is a method for preparing modified cellulosic fibers comprising reacting linear, water-wettable polysaccharides with N,N min -methylenebisacrylamide under special conditions. The materials are useful in the preparation of products characterized by their increased bulk and absorbency.
Inventors
- 👤 Larry Box
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 22:39
CPC Classifications
D; D21; D21H; D21H11/00; D21H11/16; D21H11/20; A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; C; C08; C08B; C08B15/00; C08B15/05; C08B15/06; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/41; D06M13/412; D06M14/00; D06M14/02; D06M14/04; D21H13/00; D21H13/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A method for preparing modified cellulosic fibers which comprises the steps of reacting cellulosic fibers with N,N'-methylenebisacrylamide by dry weight of said fibers in an aqueous alkaline medium having a pH between 8.5 and 13.5 and a consistency of at least 10% while excluding air and maintaining the temperature of the aqueous medium below its boiling point.
Claim 2
Independent Claim
57 words
A method for preparing modified cellulosic fibers which comprises the steps of reacting cellulosic fibers with N,N'-methylenebisacrylamide by dry weight of said fibers in an aqueous alkaline medium having a pH between 8.5 and 13.5 and a consistency of at least 10% while excluding air and maintaining the temperature of the aqueous medium below its boiling point.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said fibers are in the form of a slurry or mixture.
Claim 4
Dependent Claim
13 words
The method of claim 2 wherein the consistency is between 20 and 45%.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein said fibers are in the form of a batt or web.
Claim 6
Dependent Claim
12 words
The method of claim 4 wherein the consistency is greater than 45%.
Claim 7
Dependent Claim
10 words
The method of claim 1 wherein said fibers are fines.
Claim 8
Dependent Claim
18 words
The method of claim 1 wherein said fibers are wood pulp fibers derived from a mechanical pulping process.
Claim 9
Dependent Claim
17 words
A process for delignifying pulp wherein the delignification stage is preceded by the method of claim 1.
References Cited (Backward Citations)
No citation records indexed.
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