Flushable fiber compositions comprising modified polypropylene and modified poly (ethylene oxide) and process for making the same
AssigneeKimberly-Clark Worldwide, Inc.
InventorsJames H. Wang, David M. Schertz
Life of this patent
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Abstract
A fiber composition which comprises a blend of modified polypropylene and modified poly(ethylene oxide). This fiber composition can be melt-processed to make fibers useful in flushable personal care products. A process for making this fiber composition is also provided.
Claims10
A fiber comprising a fiber composition including polypropylene which has been modified by grafting with a polar vinyl monomer and poly(ethylene oxide) which has been modified by grafting with a polar vinyl monomer,
- wherein the fiber composition has sufficient melt strength and sufficient melt elasticity for melt spinning into fibers,
- wherein the fiber composition has an apparent viscosity of less than about 150 Pascal*second at shear rates of not less than about 50 seconds−1.
A fiber comprising a fiber composition including poly(ethylene oxide) microfibers which have been modified by grafting with a polar vinyl monomer dispersed in a continuous phase of modified polypropylene,
- wherein the fiber composition has sufficient melt strength and sufficient melt elasticity for melt spinning into fibers,
- wherein the fiber composition has an apparent viscosity of less than about 150 Pascal*second at shear rates of not less than about 50 seconds−1.
Dependencies are inferred from the claim text.