Temporary wet strength resins with nitrogen heterocyclic nonnucleophilic functionalities and paper products containing same
AssigneeThe Procter & Gamble Company
InventorDavid W. Bjorkquist
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AssigneeThe Procter & Gamble Company
InventorDavid W. Bjorkquist
Estimating the term…
Temporary wet strength resins, and paper products containing same, having a molecular weight of from about 20,000 to about 200,000, most preferably from about 30,000 to aboug 95,000 having the fomula: ##STR1## wherein: A is 0 or ##STR2## and X is --O--, --NH--, or --NCH.sub.3 --, and R is a substituted or unsubstituted aliphatic group; Y.sub.1 and Y.sub.2 are independently --H, --CH.sub.3, or a halogen; W is a nonnucleophilic, water-soluble nitrogen heterocyclic moiety; and Q is a cationic monomeric unit. The mole percent of "a" ranges from about 30% to about 70%, preferably from about 45% to about 55%; the mole percent of "b" ranges from about 30% to about 70%, preferably from about 45% to about 55%; and the mole percent of "c" ranges from about 1% to about 40%, most preferably from about 2% to about 5%.
A paper product comprising a sheet of fibrous materials and from about 0.005% to about 5.0% of a water soluble, temporary wet strength resin, said resin comprising a polymer characterized by the substantially complete absence of nucleophilic functionalities and having the formula:
A paper product comprising a sheet of fibrous materials and from about 0.005% to about 5.0% of a water soluble, temporary wet strength resin, said resin comprising a polymer characterized by the substantially complete absence of nucleophilic functionalities and having the formula:
Dependencies are inferred from the claim text.