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US 7,064,091 B2Granted
Incorporation of a self-crosslinking polymer into a nonwoven binder for use in improving the wet strength of pre-moistened wipes
AssigneeAir Products Polymers, L.P.
InventorsJoel Erwin Goldstein, Ronald Joseph Pangrazi, Nicola Ranieri, Christian Leonard Daniels
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Abstract
This invention is directed to an aqueous polymeric binder composition that is useful in improving the wet strength of pre-moistened wipes. The binder composition comprises a blend or mixture of two components. One component is a water dispersible polymer capable of binding together the fibers composing a nonwoven web. The other component is an aqueous solution or dispersion of a polymer comprised predominantly of self-crosslinking monomer(s).
Claims11
A packaged pre-moistened wet wipe comprising,
- 1) a web of nonwoven fibers bonded with a binder;
- 2) the binder comprises a blend of:
- a) a water dispersible polymeric binder;
- and
- b) an aqueous solution or an aqueous dispersion of a polymer comprising predominantly self-crosslinking monomer;
- 3) the total amount of crosslinking monomer in the blend is 1 to 11 wt. %, based on the total weight of solids.
3 more elements
A packaged pre-moistened wet wipe comprising,
- 1) a web of nonwoven fibers bonded with a binder;
- 2) the binder comprises a blend of:
- a) a water dispersible polymeric binder;
- and
- b) an aqueous solution or an aqueous dispersion of a polymer comprising predominantly seif-crosslinking monomer;
- 3) the total amount of crosslinking monomer in the blend is 1 to 11 wt. %, based on the total weight of solids;
- and the water dispersible polymeric binder is a polymer emulsion comprising a polymer containing 65 to 85 wt. % vinyl acetate, 7 to 20 wt. % ethylene, 1 to 5 wt. % N-methylol acrylamide, and 2 to 10 wt. % acetoacetoxyethyl methacrylate.
4 more elements
Dependencies are inferred from the claim text.