Method of increasing the water absorption of cellulose-containing materials
AssigneeResearch Corporation
InventorsJoel Lawson Williams, Vivian Thomas Stannett
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Abstract
A process for increasing the water-absorbency of cellulose-containing materials by graft-copolymerizing onto said material a vinyl monomer containing a hydrophilic group and treating the graft-copolymerized material with a decrystallizing agent for cellulose.
Claims17
In a process for imparting water-absorbent properties to a cellulose-containing material by graft-copolymerizing onto said material at least one vinyl monomer containing a hydrophilic group the improvement comprising treating said graft-copolymerized material with a decrystallizing agent for cellulose in an amount and for a time sufficient to increase the water absorbency of the graft copolymerized material.
In a process for imparting water-absorbent properties to a cellulose-containing material by graft-copolymerizing onto said material at least one vinyl monomer containing a hydrophilic group, the improvement comprising effecting said graft-copolymerization after irradiating said material with a dose of 0.1 to 100 megarads of high energy radiation and then treating said material with a decrystallizing agent for cellulose in an amount and for a time sufficient to increase the water-absorbency of the graft-copolymerized material, wherein the amount of vinyl monomer copolymerized onto said material is at least about 30%, by weight, based on the weight of the material.
Dependencies are inferred from the claim text.