Coated filter media
OwnerStuart Bartley, Richard Yodiceinventors
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Abstract
The invention relates to a coating composition on the surface of a filtration media. In particular, the invention relates to a coating composition for a filtration media comprising at least one polymer; at least one crosslinking agent; and optionally at least one compatabilizing agent.
Claims19
A coating composition for a filter media comprising 1) at least one reactive polymer;
- 2) at least one crosslinking agent;
- 3) optionally at least one compatabilizing agent comprising a reactive protecting group to prevent crosslinking in solution, and 4) optionally at least one component selected from the group consisting of latexes, binders, sizing resins, antioxidants, metal sequestering agents, corrosion inhibitors, slow release agents, soluble metal removal agents, biocides and mixtures thereof.
A process to apply a coating on a filter media by mixing and reacting a reactive polymer and a compatabilizing agent together and then adding the crosslinking agent to the mixture resulting in a coating solution and then apply the coating solution to the media by a method selected from the group consisting of dipping, spraying, vacuum pull through and combinations thereof, and then drying the applied coating solution on the media at a temperature in the range of ambient temperature to about 150° C. resulting in a coated filter with improved adhesion to the surface of the media and improved ability for filtration.
A process to apply the coating on a filter media by using a non woven filter media selected from the group consisting of synthetic, cellulosic, fiber glass and mixtures thereof with binders, resins, fillers, pigments and other additives;
- and then subsequently mixing and reacting a reactive polymer in solution and optionally a compatabilizing agent resulting in a coating solution;
- and then applying the coating solution to the filter media by a method selected from the group consisting of dipping, spraying, vacuum pull through and combinations thereof;
- and then drying the applied coating solution on the media at temperature in the range of ambient temperature to about 150° C. resulting in a treated filter media.
A process to apply a coating on a filter media comprising 1) depositing at least one reactive polymer on a surface of a filter media which may optionally be mixed with a compatibilizing agent, 2) adding a crosslinking agent on the surface of the filter media which contains the deposited reactive polymer, 3) heating, evaporating and/or curing the components at a temperature in the range of about 25° C. to about 150° C. from about one minute to about 1000 minutes, resulting in a coated filter with improved adhesion to the surface of the media and improved ability for filtration.
Dependencies are inferred from the claim text.