# US 10,246,522 B2 · Cellulose particulate material

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- Number: US 10,246,522 B2
- Document ID: US10246522B2
- Status: Granted
- Kind: B2
- Application number: 14/778,368
- Filed: 2014-03-18
- Published: 2016-06-16
- Granted: 2019-04-02
- Earliest claimed: 2013-03-18
- Assignees: Cellucomp Limited
- Applicants: Cellucomp Limited
- Inventors: David Hepworth; Eric Whale
- Web page: https://patentgrep.com/patent/US10246522B2

## CPC

- C09D 7/65: macromolecular (C09D7/41-C09D7/48 take precedence)
- A23L 29/262: Cellulose; Derivatives thereof, e.g. ethers
- A23L 33/24: Cellulose or derivatives thereof
- A61K 8/0241: {Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes)}
- A61K 8/731: {Cellulose; Quaternized cellulose derivatives}
- A61K 8/97: from algae, fungi, lichens or plants; from derivatives thereof
- A61K 8/9789: Magnoliopsida [dicotyledons]
- A61Q 19/00: Preparations for care of the skin
- C04B 18/248: {from specific plants, e.g. hemp fibres}
- C04B 24/383: {Cellulose or derivatives thereof}
- C04B 28/02: containing hydraulic cements other than calcium sulfates
- C08B 15/00: Preparation of other cellulose derivatives or modified cellulose {, e.g. complexes}
- C08H 8/00: Macromolecular compounds derived from lignocellulosic materials {(pretreatment thereof B27N)}
- C08L 1/02: Cellulose; Modified cellulose
- C08L 97/02: Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)}
- C09D 5/024: {characterised by the additives}
- C09D 7/43: Thickening agents
- C09D 101/02: Cellulose; Modified cellulose
- C09D 197/02: Lignocellulosic material, e.g. wood, straw or bagasse
- D21H 17/02: Material of vegetable origin (proteins D21H17/22; lignins D21H17/23; polysaccharides D21H17/24; rosin D21H17/62)
- D21H 17/24: Polysaccharides
- D21H 17/25: Cellulose
- D21H 21/14: characterised by function or properties in or on the paper (D21H19/66, D21H27/02 take precedence)
- A23V 2002/00: Food compositions, function of food ingredients or processes for food or foodstuffs
- A61K 2800/10: General cosmetic use
- A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns
- C08L 2205/18: Spheres
- Y02W 30/91: Use of waste materials as fillers for mortars or concrete
- 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)
- A23L: FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF (preservation thereof A23B)
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- C08B: POLYSACCHARIDES; DERIVATIVES THEREOF (polysaccharides containing less than six saccharide radicals attached to each other by glycosidic linkages C07H; fermentation or enzyme-using processes C12P19/00; sugar industry C13; production of cellulose D21)
- C08H: DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS (polysaccharides C08B; natural rubber C08C; natural resins or their derivatives C09F; bituminous materials C10)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- A23V: INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

The invention relates to plant-derived cellulose-containing particles useful as strengthening agents in water based systems and to a process for preparing cellulose-containing particles from plant material, which process involves treating said plant material with a peroxide reagent. The process can be controlled to produce cellulose-containing particle having a viscosity up to about 2500 cps.

## Claims

### Claim 1

A process for preparing cellulose-containing particulate material which has a viscosity at a concentration of 1 dry wt % in water of less than 2500 cps, the process comprising the steps of:
contacting herbaceous plant material with a peroxide reagent and water;
(ii) heating the mixture from (i) to a temperature of from 30 to 110° C. and maintaining said mixture at a temperature of from 30 to 110° C. until the pH of the mixture has dropped by at least 2 pH units;
(iii) isolating the cellulose-containing particles; and
(iv) reducing the water content of the product of step (iii).

### Claim 2 (depends on 1)

A process according to claim 1, wherein the herbaceous plant material comprises greater than 30% by volume of parenchymal cell material.

### Claim 3 (depends on 1)

A process according to claim 1, wherein the herbaceous plant material comprises less than 10 wt % lignocellulose.

### Claim 4 (depends on 1)

A process according to claim 1, wherein the plant material is a root vegetable.

### Claim 5 (depends on 1)

A process according to claim 1, wherein the plant material is a potato.

### Claim 6 (depends on 1)

A process according to claim 1, wherein step (i) includes mechanically treating the herbaceous plant material so that it comprises particles with a major dimension of less than 10 mm.

### Claim 7 (depends on 1)

A process according to claim 1, wherein step (ii) involves mechanically homogenizing the mixture while the mixture is being maintained at said temperature and/or wherein step (ii) involves cooling down the mixture after the period of time is over and then mechanically homogenizing the mixture.

### Claim 8 (depends on 1)

A process according to claim 1, wherein, in step (ii) the mixture is heated to a temperature of from 70 and 100° C. and maintained at a temperature of from 70 and 100° C.

### Claim 9 (depends on 1)

A process according to claim 1, wherein the process is carried out in the absence of an alkali or acid reagent.

### Claim 10 (depends on 1)

A process according to claim 1, wherein the process comprises a further step (v) of contacting the cellulose-containing particles with an oxidant.

### Claim 11 (depends on 1)

A process according to claim 1, wherein the process is carried out in the absence of a pH-modifying additive.

### Claim 12 (depends on 1)

A process according to claim 1, wherein the only chemical treatment used to break down the herbaceous plant material is the peroxide chemical treatment of step (i).

### Claim 13

A composition comprising less than about 10 wt % plant-derived cellulose particulate material, wherein the plant-derived cellulose particulate material comprises less than 30 wt % extractable glucose; and extractable xylose in an amount of at least 3% of the amount of extractable xylose in the starting plant material.

### Claim 14 (depends on 13)

The composition of claim 13, wherein the composition is a cement composition, further comprising a binder.

### Claim 15 (depends on 13)

The composition of claim 13, wherein the composition is a concrete composition, further comprising an aggregate material.

### Claim 16 (depends on 13)

The composition of claim 13, wherein the composition is a paint composition, further comprising a binder.

### Claim 17 (depends on 13)

The composition of claim 13, wherein the composition is a food composition.

### Claim 18 (depends on 13)

The composition of claim 13, wherein the composition is a cosmetic composition, further comprising a binder.

### Claim 19

Paper comprising less than about 40 wt % plant-derived cellulose particulate material, wherein the plant-derived cellulose particulate material comprises less than 30 wt % extractable glucose; and extractable xylose in an amount of at least 3% of the amount of extractable xylose in the starting plant material.