# US 8,785,519 B2 · Anionic latex as a carrier for bioactive ingredients and methods for making and using the same

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- Number: US 8,785,519 B2
- Document ID: US8785519B2
- Status: Granted
- Kind: B2
- Application number: 11/895,539
- Filed: 2007-08-24
- Published: 2008-07-17
- Granted: 2014-07-22
- Earliest claimed: 2006-08-24
- Assignees: Mallard Creek Polymers, Inc.
- Applicants: Venkataram Krishnan
- Inventors: Venkataram Krishnan
- Web page: https://patentgrep.com/patent/US8785519B2

## CPC

- C09D 5/1637: {Macromolecular compounds}
- C08F 2/26: anionic
- C08F 220/1804: {C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate}
- C08F 220/26: Esters containing oxygen in addition to the carboxy oxygen
- A61C 8/0012: {characterised by the material or composition, e.g. ceramics, surface layer, metal alloy (use of specific materials A61K6/00)}
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)

## Abstract

This invention relates to latex compositions that incorporate at least one bioactive component such as an antibacterial or an antifungal agent, and methods for making and using such latex compositions. The latex compositions disclosed herein can be prepared by the emulsion polymerization of the latex component monomers in the presence of the at least one bioactive component.

## Claims

### Claim 1

A bioactive anionic polymer latex comprising:
a) a latex polymer comprising the emulsion polymerization product of: i) at least one ethylenically unsaturated first monomer; and ii) optionally, at least one ethylenically unsaturated second monomer that is anionic or a precursor to an anion;
b) at least one bioactive component partially encapsulated within the latex polymer, wherein the bioactive component is partially encapsulated during polymerization; and
c) optionally, at least one sterically bulky component incorporated into the latex polymer.

### Claim 2 (depends on 1)

The bioactive anionic polymer latex according to claim 1, wherein the at least one ethylenically unsaturated first monomer is selected independently from a vinyl aromatic monomer, a halogenated or non-halogenated olefin monomer, an aliphatic conjugated diene monomer, a non-aromatic unsaturated mono-carboxylic ester monomer, an unsaturated alkoxylated monoester or diester monomer, an unsaturated diester of an acid anhydride monomer, a nitrogen-containing monomer, a nitrile-containing monomer, a cyclic or an acyclic amine-containing monomer, a branched or an unbranched alkyl vinyl ester monomer, an aryl vinyl ester monomer, a halogenated or a non-halogenated alkyl(meth)acrylate monomer, a halogenated or a non-halogenated aryl(meth)acrylate monomer, a carboxylic acid vinyl ester, an acetic acid alkenyl ester, a carboxylic acid alkenyl ester, a vinyl halide, a vinylidene halide, or any combination thereof, any of which having up to 20 carbon atoms.

### Claim 3 (depends on 1)

The bioactive anionic polymer latex according to claim 1, wherein the at least one ethylenically unsaturated first monomer is selected independently from styrene, para-methyl styrene, chloromethyl styrene, vinyl toluene, ethylene, butadiene, methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, butyl(meth)acrylate, pentyl(meth)acrylate, glycidyl(meth)acrylate, isodecyl(meth)acrylate, lauryl(meth)acrylate, (meth)acrylonitrile, (meth)acrylamide, N-methylol(meth)acrylamide, N-(isobutoxymethyl)(meth)acrylamide, vinyl neodecanoate, vinyl versatate, vinyl acetate, a C3-C8 alkyl vinylether, a C3-C8 alkoxy vinyl ether, vinyl chloride, vinylidene chloride, vinyl fluoride, vinylidene fluoride, trifluoroethylene, tetrafluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, perfluorobutyl ethylene, a perfluorinated C3-C8 alpha-olefin, a fluorinated C3-C8 alkyl vinylether, a perfluorinated C3-C8 alkyl vinylether, a perfluorinated C3-C8 alkoxy vinyl ether, or any combination thereof.

### Claim 4 (depends on 1)

The bioactive anionic polymer latex according to claim 1, wherein the at least one ethylenically unsaturated second monomer is selected independently from (meth)acrylic acid, maleic acid, maleic anhydride, 2-sulfoethyl(meth)acrylate, styrene sulfonate, 2-acrylamido-2-methylpropane sulfonic acid, monomethyl maleate, itaconic acid, itaconic anhydride, fumaric acid, or any combination thereof.

### Claim 5 (depends on 1)

The bioactive anionic polymer latex according to claim 1, wherein the at least one sterically bulky component is at least one sterically bulky polymer selected independently from polyvinyl alcohols, polyvinyl pyrollidone, hydroxyethyl cellulose, or any combination thereof.

### Claim 6 (depends on 1)

The bioactive anionic polymer latex according to claim 1, comprising from 0.01% to 100% by weight of the ethylenically unsaturated first monomer, based on the total monomer weight.

### Claim 7 (depends on 1)

The bioactive anionic polymer latex according to claim 1, comprising from 0% to 99.99% by weight of the ethylenically unsaturated second monomer, based on the total monomer weight.

### Claim 8 (depends on 1)

The bioactive anionic polymer latex according to claim 1, comprising from 0.01% to about 40% by weight bioactive additive, based on the total monomer weight.

### Claim 9 (depends on 1)

The bioactive anionic polymer latex according to claim 1, comprising from 0% to 5% by weight sterically bulky component, based on the total monomer weight.

### Claim 10 (depends on 1)

The bioactive anionic polymer latex according to claim 1, further comprising a nonionic surfactant.

### Claim 11 (depends on 1)

The bioactive anionic polymer latex according to claim 1, wherein the latex polymer is substantially devoid of anionic surfactants.

### Claim 12 (depends on 1)

A coating comprising the bioactive anionic polymer latex according to claim 1.

### Claim 13 (depends on 1)

An article comprising the bioactive anionic polymer latex according to claim 1.