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US 4,391,878 AGranted
Wet strength resins
AssigneeScott Paper Company
InventorJohn E. Drach
Life of this patent
Estimating the term…
Abstract
Water soluble wet strength resins containing maleamic acid and at least one other ethylenically unsaturated monomer, such as vinyl esters, olefins, acrylic and/or methyacrylic acids and/or their esters and/or their amindes are useful in the preparation of paper products having improved, off-machine dry strength and wet strength properties.
Claims10
A cellulosic fibrous web wherein the cellulose fibers are chemically modified by a cross-linking reaction with a wet strength resin comprising a water soluble copolymer comprised of (A) a half-acid, half-amide corresponding to the following general formula:
- ##STR6## wherein R' is H and R is a hydrocarbon chain containing a double bond which has radically polymerized with (B) at least one other ethylenically unsaturated monomer.
Dependencies are inferred from the claim text.