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The Eastman Kodak Company patent solves the following problem:
Many materials and methods developed to impart antimicrobial properties to medical matters, consumer articles and food packaging. Almost all the way so far developed trust in release bacteriocides or bacteriostats to kill unwanted microbes such as bacteria, viruses, yeast, and others that for an antimicrobial article to be effective against harmful these micro-organisms, the antimicrobial compound must be in direct contact with the micro-organisms in the surrounding environment, such as food, liquid nutrient or biological fluid. This creates a problem in that the surrounding environment may be contaminated with antimicrobial compounds, which tend to change the color or taste of things like drinks and food, and in most cases can be harmful to humans using or consuming things. The wide spread use of antimicrobial materials can cause more problems throwing things contain these materials can not be accomplished without impacting the biological health of the landfill or other disposal areas; and further antimicrobial compounds can be mixed into the surrounding rivers, lakes and water supply. The wide spread use of antimicrobial materials can cause even more problems in the micro-organisms can develop resistance to these materials and new infectious agents and new diseases can to develop.
Our analysis of this patent is as follows:
Eastman Kodak Company’s patent US 7323109 B2 deals with Composition comprising metal-ion sequestrant.
This invention relates to a composition of matter comprising a functionalized polymer mordant containing a cationic polymer with an adsorbed metal ion sequestrant, where the metal ion sequestrant has a stability constant greater than in 1010 with iron (III). It further relates to an article comprising said composition and a way of getting the target metal ion from an environment comprising contacting the environment with the said composition.
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