# US 2018/0194960 A1 · Coating layers of a nanocomposite comprising a nano-cellulose material and nanoparticles

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- Number: US 2018/0194960 A1
- Document ID: US20180194960A1
- Status: Published application
- Kind: A1
- Application number: 15/913,396
- Filed: 2018-03-06
- Published: 2018-07-12
- Earliest claimed: 2012-03-06
- Assignees: Yissum Research Development Company of the Hebrew University of Jerusalem
- Applicants: Yissum Research Development Company of the Hebrew University of Jerusalem Ltd.
- Inventors: Oded SHOSEYOV; Yossef PALTIEL; Shira YOCHELIS; Sigal BARUCH-SHARON; Yuval NEVO
- Web page: https://patentgrep.com/patent/US20180194960A1

## CPC

- C08J 7/048: Forming gas barrier coatings
- B05D 1/007: {using an electrostatic field (B05D1/02 - B05D1/16 take precedence)}
- B05D 3/007: {After-treatment}
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C08J 5/005: {Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials}
- C08K 3/08: Metals
- C08K 3/10: Metal compounds
- C08K 3/22: of metals
- C08K 7/16: Solid spheres
- C08L 23/06: Polyethylene
- C09D 7/67: {Particle size smaller than 100 nm}
- C09D 7/68: {Particle size between 100-1000 nm}
- C09D 11/108: Hydrocarbon resins
- C09D 101/02: Cellulose; Modified cellulose
- C09K 11/025: {non-luminescent particle coatings or suspension media}
- C09K 11/883: {with zinc or cadmium}
- G02B 1/10: Optical coatings produced by application to, or surface treatment of, optical elements (G02B1/08 takes precedence)
- G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation}
- H01B 1/20: Conductive material dispersed in non-conductive organic material {(organic macromolecular compounds or compositions C08)}
- C08J 2301/26: Cellulose ethers
- C08J 2303/02: Starch; Degradation products thereof, e.g. dextrin
- C08J 2323/06: Polyethene
- C08J 2329/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
- C08J 2367/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds; (C08J2367/06 takes precedence)
- C08J 2367/04: Polyesters derived from hydroxy carboxylic acids, e.g. lactones (C08J2367/06 takes precedence)
- C08J 2373/02: Polyanhydrides
- C08J 2401/02: Cellulose; Modified cellulose
- Y10T 428/265: 1 mil or less
- Y10T 428/31703: Next to cellulosic
- Y10T 428/3179: Next to cellulosic
- Y10T 428/3188: Next to cellulosic
- Y10T 428/31971: Of carbohydrate
- Y10T 428/31978: Cellulosic next to another cellulosic
- Y10T 428/31982: Wood or paper
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- 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)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention provides articles and methods for making such articles including a substrate coated on at least one region thereof with a layer of nanocomposites nano-cellulose materials and nanoparticles.

## Claims

### Claim 1

A multilayer sheet comprising at least one layer of a nanocomposite blend of NCC and a plurality of nanoparticles, wherein said at least one layer of the nanocomposite blend is provided optionally between two layers or sheets of a substrate material, said multilayer sheet suppressing or blocking UV or IR radiation and permeation therethrough of gases selected from O2, CO2, CO, N2, NOx, SOx and H2, and wherein the nanoparticles are selected from the group consisting of ZnO, Al2O3, SiO2, CdSe, TiO2, doped TiO2, quantum dots and combinations thereof.

### Claim 2 (depends on 1)

The sheet according to claim 1, wherein said at least one layer of a nanocomposite having a thickness of between 5 to 1000 nm, or between 5 and 100 nm, or between 5 and 50 nm, or between 5 and 30 nm, or between 5 and 20 nm, or between 50 to 900 nm, or between 100 to 700 nm, or between 100 to 700 nm, or between 200 to 500 nm.

### Claim 3 (depends on 1)

The sheet according to claim 1, further comprising at least one additional layer of at least one nano-cellulose material being free of nanoparticles.

### Claim 4 (depends on 1)

The sheet according to claim 1, comprising two or more layers of a nanocomposite, or at least 10 layers, or between 10 and 500 layers, or between 10 and 400 layers, or between 10 and 300 layers, or between 10 and 200 layers, between 10 and 100 layers, or between 100 and 500 layers, or between 100 and 400 layers, or between 100 and 300 layers, or between 100 and 200 layers.

### Claim 5 (depends on 1)

The sheet according to claim 1, wherein the nanoparticles are quantum dots (QD).

### Claim 6 (depends on 1)

The sheet according to claim 1, wherein the substrate material is selected from the group consisting of paper, paperboard, plastic, metal, and composite materials.

### Claim 7 (depends on 1)

The sheet according to claim 1, wherein the substrate materials being selected amongst aliphatic polymers optionally selected from the group consisting of polyhydroxyalkanoates (PHA), polylactic acid (PLA), polybutylene succinate (PBS), polycaprolactone (PCL), polyanhydrides, polyvinyl alcohol, starch and starch derivatives and cellulose esters.

### Claim 8 (depends on 1)

The sheet according to claim 1, adapted for use in any one or more of the following:
a. the manufacture of containers, medical packs, construction materials, wire-coating materials, agricultural materials, food packaging materials and buffer and insulation materials;
b. the construction of plastic greenhouses, plastic tunnels, and other agricultural and horticultural articles; and
c. improving growth, appearance, disease resistance and desirability of horticultural growths.