Water absorbent latex polymer foams
AssigneeHoechst Celanese Corporation
InventorsSteven F. Nielsen, Dai W. Kim
Life of this patent
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Abstract
A water absorbent latex polymer foam produced by the process of combining a foamed latex polymer product with a water absorbent polymer and drying that blend to form a foamable latex polymer containing a water absorbent polymer is disclosed in this invention. The latex foams produced by this process are of great use, for example, within diapers, sanitary napkins, packaging materials, and the like. In particular, the use of water absorbent polymers with particle size less than about 30 microns has been shown to produce particularly effective absorbent latex foams.
Claims12
A water absorbent latex polymer foam prepared by the process of:
- a. preparing a foamable latex polymer material;
- b. foaming said latex polymer material;
- c. blending a water absorbent polymer with the latex foam material;
- and
- d. drying the latex foam material containing the water absorbent polymer within its structure to form a water absorbent latex polymer foam.
A water absorbent latex polymer foam prepared by the process of;
- a. preparing a styrene-butadiene rubber latex polymer material;
- b. foaming said styrene-butadiene rubber polymer material;
- c. blending a water absorbent polymer particulate with the styrene-butadiene rubber latex foam;
- and
- d. drying the styrene-butadiene rubber foam material containing within its structure the water absorbent polymer to form a styrene-butadiene rubber latex foam with water absorbent polymer within its structure.
A water absorbent latex polymer foam product prepared by the process of:
- a. preparing a foamable latex polymer material;
- b. foaming said foamable latex polymer material;
- c. blending a water absorbent polymer particulate with the latex foam material;
- d. drying the latex foam material containing water absorbent polymer particulates within its structure to form a water absorbent latex foam containing the water absorbent polymer particulates within its structure;
- and
- e. securing the water absorbent latex foam containing the water absorbent polymer particulates within its structure to a substrate to form a water absorbent latex polymer foam secured to a substrate.
A water absorbent polymer foam product prepared by the process of:
- a. preparing a styrene-butadiene rubber latex polymer material;
- b. foaming said styrene-butadiene rubber latex polymer material;
- c. blending a water absorbent polymer particulate with the styrene-butadiene rubber latex foam;
- d. drying the styrene-butadiene rubber latex foam containing water absorbent polymer particulates within its structure to form a water absorbent styrene-butadiene rubber latex foam containing the water absorbent polymer particulate within its structure;
- and
- e. securing the styrene-butadiene rubber latex polymer foam containing the water absorbent polymer particulate to a non-woven substrate to form a water absorbent styrene-butadiene rubber latex polymer foam secured to a substrate.
A water absorbent latex foam material prepared by blending water absorbent polymer particulates with a foamable latex, wherein the water absorbed polymer particulates comprise at least about 5 percent of the latex foam material, and wherein the material is capable of absorbing at least about 35 times the weight of the water absorbent polymer particulates in water and about 12 times the weight of the water absorbent polymer particulates in a one percent saline solution.
Dependencies are inferred from the claim text.