Ion triggerable, cationic polymers, a method of making same and items using same
View Patent ↗The present invention is directed to ion triggerable, water-dispersible cationic polymers. The present invention is also directed to a method of making ion triggerable, water-dispersible cationic polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion triggerable, water-dispersible binder compositions and their applicability in water-dispersible personal care products, such as wet wipes.
1. A method of making a wet wipe comprising:
forming a substrate of fibrous material;
applying to said substrate a binder composition comprising the polymerization product of a vinyl-functional cationic monomer and one or more hydrophobic vinyl monomers with alkyl side chains of 1 to 4 carbon atoms; and
applying to said substrate a wetting solution comprising an aqueous salt solution comprising about 0.3% to about 10% by weight of a mono or divalent salt such that said binder composition is insoluble in said wetting solution and said binder composition is dispersible in water containing up to 200 ppm Ca 2+ and/or Mg 2+ ions.
2. The method of claim 1 , wherein said mono or divalent salt has a concentration of about 0.5% to about 5% by weight.
3. The wet wipe of claim 1 , wherein said mono or divalent salt has a concentration of about 1.0% to about 4.0% by weight.
4. The wet wipe of claim 1 , wherein said mono or divalent salt is an alkali metal halide.
5. The wet wipe of claim 1 , wherein said mono or divalent salt is selected from NaCl, NaBr, KCl, NH 4 Cl, Na 2 SO 4 , ZnCl 2 , CaCl 2 , MgCl 2 , MgSO 4 , NaNO 3 , NaSO 4 CH 3 , and combinations thereof.
6. The wet wipe of claim 1 , wherein said mono or divalent salt is NaCl.
7. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from [2-(acryloxy)ethyl] dimethyl ammonium chloride, [2-(methacryloxy)ethyl]dimethyl ammonium chloride, [2-(acryloxy)ethyl]trimethyl ammonium chloride, [2-(methacryloxy)ethyl]trimethyl ammonium chloride, (3-acrylamidopropyl)trimethyl ammonium chloride, N,N-diallyldimethyl ammonium chloride, [2-(acryloxy)ethyl]dimethylbenzyl ammonium chloride, and [2-(methacryloxy)ethyl]dimethylbenzyl ammonium chloride.
8. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from precursor monomers selected from vinylpyridine, dimethylaminoethyl acrylate and dimethylaminoethyl methacrylate followed by quaternization of the polymer.
9. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from [2-(acryloxy)ethyl]dimethyl ammonium chloride, [2-(acryloxy)ethyl]dimethyl ammonium bromide, [2-(acryloxy)ethyl]dimethyl ammonium iodide, and [2-(acryloxy)ethyl]dimethyl ammonium methyl sulfate.
10. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from [2-(methacryloxy)ethyl]dimethyl ammonium chloride, [2-(methacryloxy)ethyl]dimethyl ammonium bromide, [2-(methacryloxy)ethyl]dimethyl ammonium iodide, and [2-(methacryloxy)ethyl]dimethyl ammonium methyl sulfate.
11. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from [2-(acryloxy)ethyl]trimethyl ammonium chloride, [2-(acryloxy)ethyl]trimethyl ammonium bromide, [2-(acryloxy)ethyl]trimethyl ammonium iodide, and [2-(acryloxy)ethyl]trimethyl ammonium methyl sulfate.
12. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from [2-(methacryloxy)ethyl]trimethyl ammonium chloride, [2-(methacryloxy)ethyl]trimethyl ammonium bromide, [2-(methacryloxy)ethyl]trimethyl ammonium iodide, and [2-(methacryloxy)ethyl]trimethyl ammonium methyl sulfate.
13. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from (3-acrylamidopropyl)trimethyl ammonium chloride, (3-acrylamidopropyl)trimethyl ammonium bromide, (3-acrylamidopropyl)trimethyl ammonium iodide, and (3-acrylamidopropyl)trimethyl ammonium methyl sulfate.
14. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from N,N-diallyldimethyl ammonium chloride, N,N-diallyldimethyl ammonium bromide, N,N-diallyldimethyl ammonium iodide, and N,N-diallyldimethyl ammonium methyl sulfate.
15. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from [2-(acryloxy)ethyl]dimethylbenzyl ammonium chloride, [2-(acryloxy)ethyl]dimethylbenzyl ammonium bromide, [2-(acryloxy)ethyl]dimethylbenzyl ammonium iodide, and [2-(acryloxy)ethyl]dimethylbenzyl ammonium methyl sulfate.
16. The method of claim 1 , wherein the vinyl-functional cationic monomer is selected from [2-(methacryloxy)ethyl]dimethylbenzyl ammonium chloride, [2-(methacryloxy)ethyl]dimethylbenzyl ammonium bromide, [2-(methacryloxy)ethyl]dimethylbenzyl ammonium iodide, and [2-(methacryloxy)ethyl]dimethylbenzyl ammonium methyl sulfate.
17. The method of claim 1 , wherein the hydrophobic vinyl monomer is selected from branched or linear alkyl vinyl ethers, vinyl esters, acrylamides, and acrylates.
18. A method of making a wet wipe comprising:
forming a substrate of fibrous material;
applying to said substrate a binder composition for binding said fibrous material into an integral web, said binder composition comprising a composition having the structure:
wherein x=1 to about 15 mole percent; y=about 60 to about 99 mole percent; and z=0 to about 30 mole percent; Q is selected from C 1 -C 4 alkyl ammonium, quaternary C 1 -C 4 alkyl ammonium and benzyl ammonium; Z is selected from —O—, —COO—, —OOC—, —CONH—, and —NHCO—; R 1 , R 2 , R 3 are independently selected from hydrogen and methyl; R 4 is C 1 -C 4 alkyl; R 5 is selected from hydrogen, methyl, ethyl, butyl, ethylhexyl, decyl, dodecyl, hydroxyethyl, hydroxypropyl, polyoxyethylene, and polyoxypropylene; and
applying to said substrate a wetting solution comprising an aqueous salt solution comprising about 0.3% to about 10% by weight of a mono or divalent salt such that said binder composition is insoluble in said wetting solution and said binder composition is dispersible in water containing up to 200 ppm Ca 2+ and/or Mg 2+ ions.
19. The method of claim 18 , wherein said mono or divalent salt has a concentration of about 0.5% to about 5% by weight.
20. The wet wipe of claim 18 , wherein said mono or divalent salt has a concentration of about 1.0% to about 4.0% by weight.
21. The method of claim 18 , wherein said binder composition comprises the polymerization product of a cationic acrylate or methacrylate and one or more alkyl acrylates or methacrylates having the structure:
wherein x=1 to about 15 mole percent; y=about 60 to about 99 mole percent; and z=0 to about 30 mole percent; R 4 is C 1 -C 4 alkyl; R 5 is selected from hydrogen, methyl, ethyl, butyl, ethylhexyl, decyl, dodecyl, hydroxyethyl, hydroxypropyl, polyoxyethylene, and polyoxypropylene.
22. The method of claim 18 , wherein said binder composition has the structure:
wherein x=1 to about 15 mole percent; y=about 85 to about 99 mole percent and R 4 is C 1 -C 4 alkyl.
23. The method of claim 22 , wherein x=about 3 to about 6 mole percent, y=about 94 to about 97 mole percent and R 4 is methyl.
24. A method of making a wet wipe comprising:
forming a substrate of fibrous material;
applying to said substrate a binder composition for binding said fibrous material into an integral web, said binder composition having the structure:
wherein x=1 to about 15 mole percent; y=about 85 to about 99 mole percent and R 4 is C 1 -C 4 alkyl; and
applying to said substrate a wetting solution comprising an aqueous salt solution comprising about 1% to about 4% by weight NaCl.
25. A method comprising:
applying to a substrate of fibrous material a binder composition comprising the polymerization product of a vinyl-functional cationic monomer and one or more hydrophobic vinyl monomers with alkyl side chains of 1 to 4 carbon atoms; and
whereby said fibrous material is dispersible in water containing up to 200 ppm Ca 2+ and/or Mg 2+ ions.
26. A method comprising applying to a substrate of fibrous material a binder composition for binding said fibrous material into an integral web, said binder composition comprising a composition having the structure:
wherein x=1 to about 15 mole percent; y=about 60 to about 99 mole percent; and z=0 to about 30 mole percent; Q is selected from C 1 -C 4 alkyl ammonium, quaternary C 1 -C 4 alkyl ammonium and benzyl ammonium; Z is selected from —O—, —COO—, —OOC—, —CONH—, and —NHCO—; R 1 , R 2 , R 3 are independently selected from hydrogen and methyl; R 4 is C 1 -C 4 alkyl; R 5 is selected from hydrogen, methyl, ethyl, butyl, ethylhexyl, decyl, dodecyl, hydroxyethyl, hydroxypropyl, polyoxyethylene, and polyoxypropylene; and
whereby said fibrous material is dispersible in water containing up to 200 ppm Ca 2+ and/or Mg 2+ ions.
27. The method of claim 26 , wherein said binder composition comprises the polymerization product of a cationic acrylate or methacrylate and one or more alkyl acrylates or methacrylates having the structure:
wherein x=1 to about 15 mole percent; y=about 60 to about 99 mole percent; and z=0 to about 30 mole percent; R 4 is C 1 -C 4 alkyl; R 5 is selected from hydrogen, methyl, ethyl, butyl, ethylhexyl, decyl, dodecyl, hydroxyethyl, hydroxypropyl, polyoxyethylene, and polyoxypropylene.
28. The method of claim 26 , wherein said binder composition has the structure:
wherein x=1 to about 15 mole percent; y=about 85 to about 99 mole percent and R 4 is C 1 -C 4 alkyl.
29. The method of claim 28 , wherein x=about 3 to about 6 mole percent, y=about 94 to about 97 mole percent and R 4 is methyl.