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Temporary wet strength resins, more particularly, temporary wet strength resins comprising a polymer backbone, wherein the polymer backbone comprises a co-crosslinking monomeric unit, preferably a reversible co-crosslinking monomeric unit, especially in the presence of water, a homo-crosslinking mon

Temporary wet strength resins, more particularly, temporary wet strength resins comprising a polymer backbone, wherein the polymer backbone comprises a co-crosslinking monomeric unit, preferably a reversible co-crosslinking monomeric unit, especially in the presence of water, a homo-crosslinking monomeric units and a cationic monomeric unit, fibrous structures comprising such temporary wet strength resins, sanitary tissue products comprising such fibrous structures and processes for making such fibrous structures and/or such sanitary tissue product. Such fibrous structures and sanitary tissue products exhibit high initial wet tensile strength and improved flushability properties.

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What is claimed is: 1. A temporary wet strength resin comprising a polymer backbone comprising a co-crosslinking monomeric unit comprising an electrophilic moiety, a homo-crosslinking monomeric unit comprising a hydroxyl moiety and lacking electrophilic moieties and nucleophilic moieties that form

What is claimed is: 1. A temporary wet strength resin comprising a polymer backbone comprising a co-crosslinking monomeric unit comprising an electrophilic moiety, a homo-crosslinking monomeric unit comprising a hydroxyl moiety and lacking electrophilic moieties and nucleophilic moieties that form stable, covalent bonds with electrophilic moieties, and a cationic monomeric unit wherein the temporary wet strength resin has the following formula: and X is--O--,--NH--, or--NCH3--, and R1 is a substituted or unsubstituted aliphatic group, R2 is an unsubstituted aliphatic group or a substituted aliphatic group lacking electrophilic moieties and nucleophilic moieties that form stable, covalent bonds with electrophilic moieties; Y1, Y2, and Y3 are independently--H,--CH3, or a halogen; W is a non-nucleophilic moiety, water-soluble nitrogen heterocyclic moiety or a tertiary amide, and Q is a cationic monomeric unit, wherein the mole percent of a is from about 1% to about 47%, the mole percent of b is from about 0% to about 70%, the mole percent of c is from about 10% to about 90%, and the mole percent of d is from about 1% to about 40%; and said temporary wet strength resin has a weight average molecular weight of at least about 20,000. 2. The temporary wet strength resin according to claim 1 wherein said weight average molecular weight of from about 20,000 to about 400,000. 3. The temporary wet strength resin according to claim 1 wherein a is from about 5% to about 30%, b is from 0% to about 60%, c is about 30% to about 80%, and d is about 2% to about 20%. 4. The temporary wet strength resin according to claim 1 wherein R1 comprises a C2-C7 aliphatic chain. 5. The temporary wet strength resin according to claim 1 wherein Z is and R2 is a C2-C4 aliphatic chain. 6. The temporary wet strength resin according to claim 1 wherein the monomeric unit comprising Z is selected from the group consisting of 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, glyceryl mono-methacrylate, glyceryl mono-acrylate, 2-hydroxypropyl acrylate 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, diethylene glycol mono-methacrylate, N-2-hydroxyethyl methacrylamide, N-(2-hydroxypropyl) methacrylamide, and acrylamidotrishydroxymethylmethane. 7. The temporary wet strength resin according to claim 1 wherein the monomeric unit comprising W is selected from the group consisting of vinyl pyrrolidones, vinyl oxazolidones, vinyl imidazoles, vinyl imidazolines, N,N-dialkyl acrylamides, alkyl acrylates, and alkyl methacrylates. 8. The temporary wet strength resin according to claim 1 wherein the monomeric unit comprising W is a vinyl pyrrolidinone, the monomeric unit comprising Z is 2-hydroxyethyl acrylate, and the monomeric unit comprising A is selected from N-(2,2-dimethoxyethyl)-N-methyl acrylamide, 3,3-dimethyoxypropyl acrylamide, 3,3diethoxypropyl acrylamide, 3,3-dimethoxypropyl methacrylamide, 2,2dimethoxy-1-methylethyl acrylate, 3,3-dimethoxypropyl methacrylate, 2-(acryloylamino)ethanal dimethylacetal, 2-(methacryloylamino)propanal dimethyl acetal, 5-(acryloylamino)pentanal dimethylacetal, 8-(acryloylamino)octanal dimethylacetal, and 3-(N-acryloyl-N-methylamino)propanal dimethyl acetal. 9. A fibrous structure comprising a temporary wet strength resin according to claim 1. 10. The fibrous structure according to claim 9 wherein the fibrous structure comprises from about 0.005% to about 5% by weight of the fibrous structure of the temporary wet strength resin. 11. A single-or multi-ply sanitary tissue product comprising a fibrous structure according to claim 9. 12. A surgical garment comprising a fibrous structure according to claim 9. 13. A process for making a fibrous structure comprising the steps of: a) providing a fiber furnish; b) depositing the fibrous furnish on a foraminous forming surface to form an embryonic fibrous web; c) drying the embryonic fibrous web such that the fibrous structure is formed; and d) applying a temporary wet strength resin according to claim 1. 14. A process for making a sanitary tissue product comprising the steps of: a) providing a fibrous structure in accordance with claim 9; and b) converting the fibrous structure into a sanitary tissue product. 15. A method for making a temporary wet strength resin comprising the steps of: a) providing a co-crosslinking monomeric unit comprising an electrophilic moiety, a homo-crosslinking monomeric unit comprising a hydroxyl moiety and lacking electrophilic moieties and nucleophilic moieties that form stable, covalent bonds with electrophilic moieties, and a cationic monomeric unit; and b) polymerizing the monomeric units from a) to form a temporary wet strength resin according to claim 1. 16. The fibrous structure according to claim 9 wherein the fibrous structure exhibits a % Total Wet Tensile Loss (Decay) after 5 minutes of soaking in neutral pH water of at least about 35% and/or a % Total Wet Tensile Loss (Decay) after 30 minutes of soaking in neutral pH water of at least about 65% and/or an initial wet tensile strength/dry tensile strength ratio (WTi/DT) of at least about 7.