# US 2025/0051590 A1 · Matting agent including polymer particles, matting polymer composition including matting agent, and method of producing polymer particles

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- Number: US 2025/0051590 A1
- Document ID: US20250051590A1
- Status: Published application
- Kind: A1
- Application number: 18/930,818
- Filed: 2024-10-29
- Published: 2025-02-13
- Earliest claimed: 2021-09-01
- Assignees: Hannanotech Co., Ltd.
- Applicants: Hannanotech Co., Ltd.
- Inventors: Doo Han HA; Soo Wan KIM; Sung Wook HA
- Web page: https://patentgrep.com/patent/US20250051590A1

## CPC

- C09D 7/42: Gloss-reducing agents
- C08F 212/10: with nitriles
- C08F 224/00: Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a heterocyclic ring containing oxygen (cyclic esters of polyfunctional acids C08F218/00; cyclic anhydrides of unsaturated acids C08F220/00, C08F222/00)
- C08F 279/04: Vinyl aromatic monomers and nitriles as the only monomers
- C08F 283/105: {on to unsaturated polymers containing more than one epoxy radical per molecule}
- C09D 155/02: ABS [Acrylonitrile-Butadiene-Styrene] polymers
- C08F 2/18: Suspension polymerisation
- C08F 222/20: Esters containing oxygen in addition to the carboxy oxygen
- C08F 222/205: {the ester chains containing seven or more carbon atoms}
- C08F 283/10: on to polymers containing more than one epoxy radical per molecule {(C08F283/004 takes precedence)}
- C09D 7/69: {Particle size larger than 1000 nm}
- 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

## Abstract

The present disclosure relates to a matting agent including polymer particles, a matting polymer composition including a matting agent, and a method of producing polymer particles. The polymer particles may be produced by a simple process using a suspension polymerization method, and is relatively easy to control a degree of crosslinking. In addition, in a case where a matting polymer composition is prepared using a matting agent including the polymer particles, it is possible to manufacture a molded article having excellent appearance and matting effect without deterioration of the existing mechanical properties such as impact strength and tensile strength of a thermoplastic polymer, and in particular, an excellent matting effect may be exerted even in the extrusion processing, which has been difficult to achieve in the related art.

## Claims

### Claim 1

A method of producing polymer particles, the method comprising:
dispersing a polymerizable composition including an aromatic vinyl compound, an unsaturated nitrile compound, and an alicyclic epoxy compound in an aqueous solution including a suspension stabilizer; and
performing suspension polymerization of the dispersed polymerizable composition.

### Claim 2 (depends on 1)

The method of claim 1,
wherein the polymerizable composition includes the unsaturated nitrile compound and the alicyclic epoxy compound in amounts of 20 to 45 parts by weight and 2.5 to 25 parts by weight, respectively, based on 100 parts by weight of the aromatic vinyl compound.

### Claim 3 (depends on 1)

The method of claim 1,
wherein the polymerizable composition further includes one or two or more acid compounds selected from the group consisting of R1COOH, R2SO3H, and salt compounds thereof, and
R1 and R2 are independently C6-30 alkyl, C6-30 aryl, or C6-30 ar C6-30 alkyl.

### Claim 4 (depends on 3)

The method of claim 3,
wherein the polymerizable composition includes the acid compound in an amount of 0.05 to 1 part by weight based on 100 parts by weight of the aromatic vinyl compound.

### Claim 5 (depends on 1)

The method of claim 1, wherein the dispersed polymerizable composition further includes an acid compound which reacts with the alicyclic epoxy compound to form divalent —SO3— substituents in the polymer particles.

### Claim 6 (depends on 5)

The method of claim 5, wherein the divalent —SO3— substituents are bonded to a hydrocarbyl group.

### Claim 7 (depends on 5)

The method of claim 5, wherein the divalent —SO3— substituents are bonded to a polymer chain.

### Claim 8 (depends on 5)

The method of claim 5, wherein a concentration of the divalent —SO3— substituents is decreased in a direction from a surface of the polymer particle to an inside of the polymer particle.