# US 2023/0265282 A1 · Polycarbonate resin composition and molded article having dot-like appearance

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- Number: US 2023/0265282 A1
- Document ID: US20230265282A1
- Status: Published application
- Kind: A1
- Application number: 17/928,451
- Filed: 2020-06-02
- Published: 2023-08-24
- Earliest claimed: 2020-06-02
- Assignees: Teijin Limited
- Applicants: Teijin Limited
- Inventors: Hiroshi KUBOI
- Web page: https://patentgrep.com/patent/US20230265282A1

## CPC

- C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates
- C08K 3/013: Fillers, pigments or reinforcing additives
- C08K 3/34: Silicon-containing compounds
- C08K 9/06: with silicon-containing compounds
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

A polycarbonate resin composition containing 0.01 to 8 parts by weight of (B) synthetic mica powder surface-coated with a silicone binder resin containing a coloring agent (component B) with respect to 100 parts by weight of (A) polycarbonate resin (component A) is characterized by excellent molded article appearance.

## Claims

### Claim 1

A polycarbonate resin composition containing 0.01 to 8 parts by weight of (B) synthetic mica powder surface-coated with a silicone binder resin containing a coloring agent (component B) with respect to 100 parts by weight of (A) polycarbonate resin (component A).

### Claim 2 (depends on 1)

The polycarbonate resin composition according to claim 1, wherein the synthetic mica powder of component B has an average particle size of 100 to 5000 µm.

### Claim 3 (depends on 1)

The polycarbonate resin composition according to claim 1, wherein the composition contains 1 to 100 parts by weight of (C) rubber-reinforced styrenic resin (component C) with respect to 100 parts by weight of (A) polycarbonate resin (component A).

### Claim 4 (depends on 1)

The polycarbonate resin composition according to claim 1, wherein the composition contains 1 to 100 parts by weight of (D) inorganic filler other than synthetic mica powder (component D) with respect to 100 parts by weight of (A) polycarbonate resin (component A).

### Claim 5 (depends on 4)

The polycarbonate resin composition according to claim 4, wherein the inorganic filler of component D is at least one inorganic filler selected from the group consisting of talc and wollastonite.

### Claim 6 (depends on 1)

The polycarbonate resin composition according to claim 1, wherein the composition contains 1 to 100 parts by weight of (E) flame retardant (component E) with respect to 100 parts by weight of (A) polycarbonate resin (component A).

### Claim 7 (depends on 1)

The polycarbonate resin composition according to claim 1, wherein the composition contains 0.01 to 10 parts by weight of (F) anti-dripping agent (component F) with respect to 100 parts by weight of (A) polycarbonate resin (component A).

### Claim 8 (depends on 1)

The polycarbonate resin composition according to claim 1, wherein the composition contains 0.01 to 10 parts by weight of (G) release agent (component G) with respect to 100 parts by weight of (A) polycarbonate resin (component A).

### Claim 9 (depends on 1)

A molded article having a dot-like appearance formed from the polycarbonate resin composition according to claim 1.