Resin composition including a polycarbonate resin and a fluorine-containing polymer, and molded article

Patent metadata

Field	Value
Publication number	US-11261324-B2
Application number	US-201816626130-A
Country	US
Kind code	B2
Filing date	Jun 25, 2018
Priority date	Jun 28, 2017
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A resin composition containing a polycarbonate resin and a fluorine-containing copolymer. The fluorine-containing copolymer is a copolymer containing a polymerized unit based on tetrafluoroethylene in an amount of 75% by mass or more of all polymerized units and at least one selected from a polymerized unit based on hexafluoropropylene and a polymerized unit based on a perfluoro(alkyl vinyl ether) in an amount of 2% by mass or more. Also disclosed is a molded article formed from the resin composition, the polycarbonate resin constituting a continuous phase and the fluorine-containing copolymer constituting a dispersed phase having an average particle size of 0.01 to 2.5 μm.

First claim

The invention claimed is:

1. A resin composition comprising a polycarbonate resin and a fluorine-containing copolymer,
the fluorine-containing copolymer being a copolymer containing a polymerized unit based on tetrafluoroethylene in an amount of 75% by mass or more of all polymerized units and at least one selected from the group consisting of a polymerized unit based on hexafluoropropylene and a polymerized unit based on a perfluoro(alkyl vinyl ether) in an amount of 2% by mass or more of all polymerized units,
wherein the polycarbonate resin constitutes a continuous phase and the fluorine-containing copolymer constitutes a dispersed phase,
wherein the dispersed phase has an average particle size of 0.01 to 2.5 μm, and
wherein the resin composition has a ratio by mass of the polycarbonate resin to the fluorine-containing copolymer (polycarbonate resin/fluorine-containing copolymer) of 94/6 to 40/60.

2. The resin composition according to claim 1 ,
wherein the fluorine-containing copolymer includes at least one selected from the group consisting of:
a copolymer containing the polymerized unit based on tetrafluoroethylene in an amount of 92 to 80% by mass of all polymerized units and the polymerized unit based on hexafluoropropylene in an amount of 8 to 20% by mass of all polymerized units;
a copolymer containing the polymerized unit based on tetrafluoroethylene in an amount of 98 to 90% by mass of all polymerized units and the polymerized unit based on a perfluoro(alkyl vinyl ether) in an amount of 2 to 10% by mass of all polymerized units; and
a copolymer containing the polymerized unit based on tetrafluoroethylene in an amount of less than 92% by mass to 75% by mass of all polymerized units, the polymerized unit based on hexafluoropropylene in an amount of 8 to 20% by mass of all polymerized units, and the polymerized unit based on a perfluoro(alkyl vinyl ether) in an amount of more than 0% by mass to 5% by mass of all polymerized units.

3. The resin composition according to claim 1 ,
wherein the fluorine-containing copolymer has a melt flow rate of 0.1 to 100 g/10 min at 300° C.

4. The resin composition according to claim 1 ,
wherein the resin composition has a melt flow rate of 1 to 200 g/10 min at 300° C.

5. A molded article formed from the resin composition according to claim 1 ,
the molded article comprising the polycarbonate resin that constitutes a continuous phase and the fluorine-containing copolymer that constitutes a dispersed phase,
the dispersed phase having an average particle size of 0.01 to 2.5 μm.

Assignees

• Daikin Ind Ltd
• Teijin Ltd

Inventors

• Nakanishi Koji
• Komori Masaji
• Kono Hideki
• Okuzawa Shunsuke
• Miyake Toshiyuki

Classifications

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08L27/18

  Homopolymers or copolymers or tetrafluoroethene · CPC title

• C08L27/20

  Homopolymers or copolymers of hexafluoropropene · CPC title