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US 2014/0197100 A1Published application
Methods and compositions for reducing bisphenol a release
AssigneeEmpire Technology Development LLC
InventorsYanjie Xu, Robert Matthew Cabrera
Life of this patent
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Abstract
Disclosed are methods, compositions and systems pertaining to polymer coatings that entrap enzymes, specifically enzymes capable of reducing carboxylic acids.
Claims26
A carboxylic acid-reducing composition comprising:
- at least one carboxylic acid-reducing enzyme and a polymer, wherein the polymer comprises organic silane.
A method of treating a composition comprising a bisphenol A (BPA) precursor, the method comprising:
- contacting the composition comprising the BPA precursor with a carboxylic acid-reducing composition, wherein the carboxylic acid-reducing composition comprises a carboxylic acid-reducing enzyme and organic silane, and
- wherein the BPA precursor comprises a polymer that produces BPA monomers upon polymer hydrolysis.
A method of treating water that contains 2,2-bis(4-hydroxyphenyl)propanoic acid (BPA-COOH), the method comprising:
- contacting the water with (a) at least one carboxylic acid-reducing enzyme entrapped in a polymer, and (b) at least one carbonyl-reducing composition under conditions wherein the BPA-COOH is degraded.
A water treatment system that contains 2,2-bis(4-hydroxyphenyl)propanoic acid (BPA-COOH), comprising:
- (a) an inlet to a treatment area, wherein the treatment area holds (i) a carboxylic acid-reducing composition comprising at least one carboxylic acid-reducing enzyme entrapped in polymerized organic silane, and (ii) at least one carbonyl-reducing composition;
- and
- (b) an outlet from the treatment area.
Dependencies are inferred from the claim text.