# US 2020/0399443 A1 · Cellulose fiber-containing resin composition, sheet, and molded body

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- Number: US 2020/0399443 A1
- Document ID: US20200399443A1
- Status: Published application
- Kind: A1
- Application number: 16/764,674
- Filed: 2018-11-16
- Published: 2020-12-24
- Earliest claimed: 2017-11-17
- Assignees: Oji Holdings Corporation
- Applicants: Oji Holdings Corporation
- Inventors: Mengchen ZHAO; Yuichi NOGUCHI; Yusuke TODOROKI; Ikue SUGIYAMA; Tomoki WATANABE
- Web page: https://patentgrep.com/patent/US20200399443A1

## CPC

- C08B 5/00: Preparation of cellulose esters of inorganic acids {, e.g. phosphates (rendering cellulose suitable for esterification C08B1/02)}
- C08L 1/02: Cellulose; Modified cellulose
- C08L 1/16: Esters of inorganic acids
- C08L 27/06: Homopolymers or copolymers of vinyl chloride
- C08L 27/16: Homopolymers or copolymers or vinylidene fluoride
- C08L 29/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
- C08L 33/08: Homopolymers or copolymers of acrylic acid esters
- C08L 101/00: Compositions of unspecified macromolecular compounds
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C08J 5/18: Manufacture of films or sheets
- C08J 2301/16: Esters of inorganic acids
- 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)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- 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)

## Abstract

It is an object of the present invention to provide a resin composite comprising ultrafine cellulose fibers, in which deterioration of a resin component is suppressed. The present invention relates to a cellulose fiber-containing resin composition comprising cellulose fibers with a fiber width of 1000 nm or less having phosphoric acid groups or phosphoric acid group-derived substituents, and a resin, wherein the counterions of the phosphoric acid groups or phosphoric acid group-derived substituents are organic onium ions, and the conjugate bases of the organic onium ions have a pKb value of 1.0 or more.

## Claims

### Claim 1

A cellulose fiber-containing resin composition comprising cellulose fibers with a fiber width of 1000 nm or less having phosphoric acid groups or phosphoric acid group-derived substituents, and a resin, wherein
the counterions of the phosphoric acid groups or phosphoric acid group-derived substituents are organic onium ions, and
the conjugate bases of the organic onium ions have a pKb value of 1.0 or more.

### Claim 2 (depends on 1)

The cellulose fiber-containing resin composition according to claim 1, wherein the organic onium ions satisfy at least one condition selected from the following (a) and (b):
(a) containing a hydrocarbon group containing 5 or more carbon atoms; and
(b) having a total carbon number of 17 or more.

### Claim 3 (depends on 1)

The cellulose fiber-containing resin composition according to claim 1, wherein the organic onium ions are organic ammonium ions.

### Claim 4 (depends on 1)

The cellulose fiber-containing resin composition according to claim 1, wherein the resin is at least one type selected from an acrylic resin, a polycarbonate resin, a polyester resin, a polyamide resin, a silicone resin, a fluorine resin, a chlorine resin, an epoxy resin, a melamine resin, a phenolic resin, a polyurethane resin, a diallyl phthalate resin, an alcoholic resin, a cellulose derivative, and precursors of these resins.

### Claim 5 (depends on 1)

The cellulose fiber-containing resin composition according to claim 1, which further comprises an organic solvent.

### Claim 6 (depends on 1)

A sheet formed from the cellulose fiber-containing resin composition according to claim 1.

### Claim 7 (depends on 1)

A molded body formed from the cellulose fiber-containing resin composition according to claim 1.

### Claim 8 (depends on 6)

A molded body formed from the sheet according to claim 6.