Water absorbent latex polymer foams containing chitosan (chitin)
AssigneeHoechst Celanese Corporation
InventorsSteven F. Nielsen, Dai W. Kim
Life of this patent
Estimating the term…
Abstract
A water absorbent latex polymer foam produced by the process of combining a foamed latex polymer product with both a water absorbent polymer and chitin and drying that blend to form a foamable latex polymer containing both water absorbent polymer and chitin. The latex foams produced by this process are of great use, for example, with wound or surgical dressings.
Claims25
A water absorbent latex polymer foam containing chitin prepared by the process of:
- a. preparing a foamable latex polymer material;
- b. foaming said latex polymer material to form a latex foam material;
- c. blending both water absorbent polymer products and chitin products with the latex foam material;
- and
- d. drying the latex foam material containing the water absorbent polymer and chitin within its structure to form a water absorbent latex polymer foam containing chitin.
A water absorbent latex polymer foam containing chitin prepared by the process of;
- a. preparing a styrene-butadiene rubber latex polymer material;
- b. foaming said styrene-butadiene rubber polymer material to form a styrene-butadiene rubber latex foam;
- c. blending both water absorbent polymer particulates and chitin particulates with the styrene-butadiene rubber latex foam;
- and
- d. drying the styrene-butadiene rubber foam material containing within its structure both the water absorbent polymer particulates and chitin to form a water absorbent styrene-butadiene rubber latex foam containing chitin within its structure.
A water absorbent latex polymer foam product containing chitin prepared by the process of:
- a. preparing a foamable latex polymer material;
- b. foaming said foamable latex polymer material to form a latex foam material;
- c. blending both water absorbent polymer products and chitin with the latex foam material;
- and
- d. drying the latex foam material containing both the water absorbent polymer products and chitin within its structure to form a water absorbent latex foam containing chitin;
- and
- e. securing the water absorbent latex foam containing chitin to a substrate to form a water absorbent latex polymer foam containing chitin which is secured to a substrate.
A water absorbent polymer foam product containing chitin prepared by the process of:
- a. preparing a styrene-butadiene rubber latex polymer material;
- b. foaming said styrene-butadiene rubber latex polymer material to form a styrene-butadiene rubber latex foam;
- c. blending both water absorbent polymer particulates and chitin with the styrene-butadiene rubber latex foam;
- d. drying the styrene-butadiene rubber latex foam containing water absorbent polymer particulates and chitin to form a water absorbent styrene-butadiene rubber latex foam containing chitin;
- and
- e. securing the styrene-butadiene rubber latex polymer foam containing water absorbent polymer particulate and chitin to a non-woven substrate to form a water absorbent styrene-butadiene rubber latex polymer foam containing chitin which is secured to a substrate.
A water absorbent latex foam material containing chitin prepared by blending water absorbent polymer particulates and chitin with a foamable latex, wherein the water absorbent polymer particulates comprise at least about 5 percent of the latex foam material, and wherein the material is capable of absorbing at least about 75 times the weight of the water absorbent polymer particulates in water and about 10 times the weight of the water absorbent polymer particulates in a one percent saline solution.
Dependencies are inferred from the claim text.