Polymeric systems for delivering hypohalide salts
AssigneeThe University of South Dakota
InventorsYuyu Sun, Zhengbing Cao, Simon Johnston
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Abstract
The invention relates to polymeric systems for stabilizing, storing and delivering hypohalide salts. One system consists of material coated with two layers: one prepared from polyethylene glycol epoxide and melamine solution and second prepared from inorganic hypohalide salt solution. The material can be fabric, cotton, bamboo, cellulosic materials, blend of cellulosic and synthetic fibers. Antimicrobial materials comprising this system are also described. Another system consists of material containing pre-formed spaces coated with water-polyethylene glycol solution of hypohalide salt and encapsulated by film forming polymer. Hypohalide salts within both systems are in some cases storage stable for at least three months.
Claims13
A method of delivering storage stable hypohalide salts, the method comprising steps of:
- contacting a material with a first aqueous solution of polyethylene glycol epoxide and melamine, wherein the first aqueous solution consists of 0.1 to 30 grams of polyethylene glycol epoxide and 0.01 to 10 grams melamine per each 100 milliliters of solution;
- drying the first aqueous solution on the material to constant weight to form a first coating consisting of polyethylene glycol and melamine;
- contacting the material with a second aqueous solution including a hypohalide salt;
- and
- drying the second aqueous solution on the material to form a second coating on the first coating, the second coating comprising the hypohalide salt;
- wherein the material is a fabric.
An antimicrobial material comprising:
- a fabric,
- a first coating consisting of polyethylene glycol epoxide and melamine;
- and
- a second coating comprising a hypohalide formed on the first coating.
Dependencies are inferred from the claim text.