# US 2012/0121459 A1 · Polymer composition and method for removing contaminates from a substrate

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- Number: US 2012/0121459 A1
- Document ID: US20120121459A1
- Status: Published application
- Kind: A1
- Application number: 11/680,050
- Filed: 2007-02-28
- Published: 2012-05-17
- Earliest claimed: 2006-02-28
- Assignees: Cellular Bioengineering, Inc.
- Inventors: Garry Edgington; Shaosheng Dong; Ge Ming Lui; Hank Wuh; Stephen L. Sherman
- Web page: https://patentgrep.com/patent/US20120121459A1

## CPC

- C11D 17/041: {Compositions releasably affixed on a substrate or incorporated into a dispensing means}
- C11D 3/222: {Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin}
- C11D 3/223: {oxidised}
- C11D 3/225: {etherified, e.g. CMC}
- C11D 3/226: {esterified}
- C11D 3/227: {with nitrogen-containing groups}
- C11D 3/228: {with phosphorus- or sulfur-containing groups}
- C11D 3/3753: {Polyvinylalcohol; Ethers or esters thereof}
- C11D 3/3765: {in liquid compositions}
- C11D 3/3773: {in liquid compositions}
- C11D 3/3776: {Heterocyclic compounds, e.g. lactam}
- C11D 2111/14: Hard surfaces
- C11D 2111/40: Specific cleaning or washing processes
- Y10T 428/31855: Of addition polymer from unsaturated monomers
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

This invention relates to an aqueous polymer composition and to films formed from this aqueous composition. The aqueous composition may be used in a method for removing contaminate material from a substrate. The aqueous polymer composition may comprise: water; and at least one water-soluble film forming polymer. In one embodiment, the aqueous composition may further comprise at least one chelating agent and/or at least one surfactant. The aqueous polymer composition may be applied to a contaminated substrate or to a clean substrate which is subjected to subsequent contamination. The aqueous composition may be dehydrated and/or the polymer may be crosslinked to form a film. When applied to a contaminated substrate, the film may combine with the contaminates. When applied to a clean substrate, the contaminate material may subsequently contact and adhere to the film. The film combined with the contaminate material may be separated from the substrate, with the result being removal of the contaminate material from the substrate.

## Claims

### Claim 1

A composition, comprising: water; at least one water-soluble film forming polymer; and at least one chelating agent; and at least one surfactant.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the composition further comprises one or more thixotropic additives, pseudoplastic addives, rheology modifiers, anti-settling agents, leveling agents, defoamers, pigments, dyes, organic solvents, plasticizers, viscosity stabilizers, biocides, viricides, fungicides, chemical warfare agent neutralizers, crosslinkers, humectants, neutron absorbers, ora mixture of two or more thereof.

### Claim 3 (depends on 1)

The composition of claim 1 wherein the polymer is biodegradable.

### Claim 4 (depends on 1)

The composition of claim 1 wherein the polymer comprises a hydrophobic backbone and hydroxyl groups.

### Claim 5 (depends on 1)

The composition of claim 1 wherein the polymer comprises hydrophobic blocks and hydrophilic blocks.

### Claim 6 (depends on 1)

The composition of claim 1 wherein the polymer comprises vinyl alcohol repeating units.

### Claim 7 (depends on 1)

The composition of claim 1 wherein the polymer comprises polyvinyl alcohol, a copolymer of vinyl alcohol, or a mixture thereof.

### Claim 8 (depends on 1)

The composition of claim 1 wherein the polymer comprises repeating units represented by the formula —CH2—CH(OH)— and repeating units represented by the formula —CH2-CH(OCOR)— wherein R is an alkyl group.

### Claim 9 (depends on 1)

The composition of claim 1 wherein the polymer comprises vinyl alcohol repeating units and vinyl acetate repeating units.

### Claim 10 (depends on 1)

The composition of claim 1 wherein the polymer comprises a copolymer containing vinyl alcohol and/or vinyl acetate repeating units and repeating units derived from one or more of ethylene, propylene, acrylic acid, methacrylic acid, acrylamide, methacrylamide, dimethacrylamide, hydroxyethylmethacrylate, methyl methacrylate, methyl acrylate, ethyl acrylate, vinyl pyrrolidone, hydroxyethylacrylate, allyl alcohol, or a mixture of two or more thereof.

### Claim 11 (depends on 1)

The composition of claim 1 wherein the polymer comprises one or more polysaccharides.

### Claim 12 (depends on 1)

The composition of claim 1 wherein the polymer comprises one or more of carboxymethylcellulose, cellulose acetate, cellulose acetate butyrate, cellulose nitrate, ethylcellulose, hydroxyalkylcellulose, hydroxyalkylalkylcellulose, methylcellulose, starch, starch acetate, starch 1-octenylsuccinate, starch phosphate, starch succinate, hydroxyethylstarch, hydroxypropylstarch, cationic starch, oxidized starch, dextrin, or a mixture of two or more thereof.

### Claim 13 (depends on 1)

The composition of claim 1 wherein the chelating agent comprises an organic compound that contains a hydrocarbon linkage and two or more functional groups, the functional groups comprising one or more of ═X, —XR, —NR2, —NO2═NR, ═NXR, ═N—R*—XR,
wherein: X is O or S; R is H or alkyl; R* is alkylene; and a is a number ranging from zero to about 10.

### Claim 14 (depends on 1)

The composition of claim 1 wherein the chelating agent comprises ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, citric acid, peptide, amino acid, aminopolycarboxylic acid, gluconic acid, glucoheptonic acid, organophosphonate, bisphosphonate, inorganic polyphosphate, or a mixture of two or more thereof.

### Claim 15 (depends on 1)

The composition of claim 1 wherein the surfactant has a hydrophilic lipophilic balance in the range of zero to about 18.

### Claim 16 (depends on 1)

The composition of claim 1 wherein the surfactant comprises one or more alkanolamines, alkylarylsulfonates, amine oxides, poly(oxyalkylene) compounds, block copolymers comprising alkylene oxide repeat units, carboxylated alcohol ethoxylates, ethoxylated alcohols, ethoxylated alkyl phenols, ethoxylated amines and amides, ethoxylated fatty acids, ethoxylated fatty esters and oils, fatty esters, fatty acid amides, glycerol esters, glycol esters, sorbitan esters, imidazoline derivatives, lecithin and derivatives, lignin and derivatives, monoglycerides and derivatives, olefin sulfonates, phosphate esters and derivatives, propoxylated and ethoxylated fatty acids or alcohols or alkyl phenols, sorbitan derivatives, sucrose esters and derivatives, sulfates or alcohols or ethoxylated alcohols or fatty esters, sulfonates of dodecyl and tridecyl benzenes or condensed naphthalenes or petroleum, sulfosuccinates and derivatives, tridecyl or dodecyl benzene sulfonic acid, or a mixture of two or more thereof.

### Claim 17 (depends on 1)

The composition of claim 1 wherein the surfactant comprises sodium lauryl sulfonate, cetyltrimethyl ammonium bromide, or a mixture thereof.

### Claim 18

A composition made by combining at least one water-soluble film forming polymer, and at least one chelating agent, and at least one surfactant.

### Claim 19 (depends on 1)

A laminate, comprising:
a release liner; and
a film layer derived from the composition of claim 1 overlying part or all of one side of the release liner.

### Claim 20 (depends on 1)

A laminate, comprising:
a film layer derived from the composition of claim 1, the film layer having a first side and a second side;
a first release liner overlying the first side of the film layer; and
a second release liner overlying the second side of the film layer.

### Claim 21

A method for removing contaminate material from a substrate, comprising:
applying an aqueous composition comprising at least one water soluble film-forming polymer to the substrate in contact with the contaminate material;
dehydrating the aqueous composition and/or crosslinking the polymer to form a film, the contaminate material combining with the film; and
separating the film from the substrate.

### Claim 22 (depends on 21)

The method of claim 21 wherein the aqueous composition further comprises at least one chelating agent, at least one surfactant, or a mixture thereof.

### Claim 23

A method for removing contaminate material from a substrate, comprising:
applying an aqueous composition comprising at least one water soluble film-forming polymer to the substrate;
dehydrating the aqueous composition and/or crosslinking the polymer to form a film;
depositing a contaminate material in or on the film; and
separating the film from the substrate.

### Claim 24 (depends on 23)

The method of claim 23 wherein the aqueous composition further comprises at least one chelating agent, at least one surfactant, or a mixture thereof.

### Claim 25 (depends on 19)

A method of removing contaminate material from a substrate, comprising:
contacting the substrate with the laminate of claim 19, the film layer contacting and combining with the contaminate material;
separating the release liner from the film layer; and
separating the film layer from the substrate.

### Claim 26 (depends on 19)

A method of removing contaminate material from a substrate, comprising:
contacting the substrate with the laminate of claim 19, the film layer contacting the substrate;
separating the release liner from the film layer;
depositing the contaminate material on the film layer; and
separating the film layer from the substrate.

### Claim 27 (depends on 20)

A method of removing contaminate material from a substrate using the laminate of claim 20, comprising:
removing the first release liner from the laminate;
contacting the substrate with the film layer, the film layer contacting and combining with the contaminate material;
separating the second release liner from the film layer; and
separating the film layer from the substrate.

### Claim 28 (depends on 20)

A method of removing contaminate material from a substrate using the laminate of claim 20, comprising:
removing the first release liner from the laminate;
contacting the substrate with the film layer;
separating the second release liner from the film layer;
depositing the contaminate material on the film layer; and
separating the film layer from the substrate.