Resin composition and molded article

Patent metadata

Field	Value
Publication number	US-9617419-B2
Application number	US-201414783122-A
Country	US
Kind code	B2
Filing date	Apr 15, 2014
Priority date	Apr 17, 2013
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A resin composition contains: 60 to 95% by mass of polyphenylene ether (A); 35 to 0% by mass of styrene-based resin (B); and 15 to 5% by mass of elastomer component (C). The component (C) is present as dispersion particles in the resin composition. The dispersion particles have a number average particle size of 0.04 to 0.25 μm.

First claim

The invention claimed is:

1. A resin composition comprising:
60 to 93% by mass of polyphenylene ether (A);
35 to 0% by mass of styrene-based resin (B); and
15 to 7% by mass of elastomer component (C),
wherein the styrene-based resin (B) is a non-rubber-reinforced styrene-based resin,
the elastomer component (C) comprises a block copolymer having a styrene block and a hydrogenated conjugated diene compound block;
the elastomer component (C) is present as dispersion particles in the resin composition;
the dispersion particles have a number average particle size of 0.04 to 0.25 μm; and the dispersion particles having a particle size of greater than 1.0 μm are not present and the number of the dispersion particles having a particle size of 0.5 to 1.0 μm is 3 or less in an area corresponding to 396 μm 2 as measured by transmission electron microscopy;
wherein the elastomer component (C) comprises an oil-extended styrene block-hydrogenated conjugated diene compound block copolymer having an oil-extended amount of 20 to 50% by mass and an olefin-based elastomer in a mass ratio of (the oil-extended styrene block-hydrogenated conjugated diene compound block copolymer having an oil-extended amount of 20 to 50% by mass: the olefin-based elastomer)=9:1 to 3:7.

2. The resin composition according to claim 1 , wherein the resin composition comprises 15 to 100 parts by mass of an oil based on 100 parts by mass of the styrene block-hydrogenated conjugated diene compound block copolymer.

3. A resin composition comprising:
60 to 93% by mass of polyphenylene ether (A);
35 to 0% by mass of styrene-based resin (B); and
15 to 7% by mass of elastomer component (C),
wherein the styrene-based resin (B) is a non-rubber-reinforced styrene-based resin;
the elastomer component (C) comprises a block copolymer having a styrene block and a hydrogenated conjugated diene compound block;
the elastomer component (C) comprises an oil-extended styrene block-hydrogenated conjugated diene compound block copolymer;
the elastomer component (C) is present as dispersion particles in the resin composition;
the dispersion particles have a number average particle size of 0.04 to 0.25 μm; and the dispersion particles having a particle size of greater than 1.0 μm are not present and the number of the dispersion particles having a particle size of 0.5 to 1.0 μm is 3 or less in an area corresponding to 396 μm 2 as measured by transmission electron microscopy;
wherein the component (C) comprises a styrene block-hydrogenated conjugated diene compound block copolymer and/or an oil-extended styrene block-hydrogenated conjugated diene compound block copolymer and an olefin-based elastomer in a mass ratio of (the styrene block-hydrogenated conjugated diene compound block copolymer and/or the oil-extended styrene block-hydrogenated conjugated diene compound block copolymer/the olefin-based elastomer)=9:1 to 3:7, and
the resin composition comprises 15 to 100 parts by mass of an oil based on 100 parts by mass of the styrene block-hydrogenated conjugated diene compound block copolymer.

4. A molded article for a light-reflecting part comprising the resin composition according to claim 1 .

5. A molded article for an automotive lamp extension comprising the resin composition according to claim 1 .

6. A resin composition comprising:
60 to 93% by mass of polyphenylene ether (A);
35 to 0% by mass of styrene-based resin (B); and
15 to 7% by mass of elastomer component (C),
wherein the styrene-based resin (B) is a non-rubber-reinforced styrene-based resin;
the elastomer component (C) comprises a block copolymer having a styrene block and a hydrogenated conjugated diene compound block;
the elastomer component (C) is present as dispersion particles in the resin composition;
the dispersion particles have a number average particle size of 0.04 to 0.25 μm; and the dispersion particles having a particle size of greater than 1.0 μm are not present and the number of the dispersion particles having a particle size of 0.5 to 1.0 μm is 3 or less in an area corresponding to 396 μm 2 as measured by transmission electron microscopy; and
wherein the component (C) comprises an oil-extended styrene block-hydrogenated conjugated diene compound block copolymer and an olefin-based elastomer in a mass ratio of (the oil-extended styrene block-hydrogenated conjugated diene compound block copolymer/the olefin-based elastomer)=9:1 to 3:7.

7. A molded article for a light-reflecting part comprising the resin composition according to claim 1 .

8. A molded article for an automotive lamp extension comprising the resin composition according to claim 1 .

Assignees

• Asahi Kasei Chemicals Corp
• Asahi Chemical Ind

Inventors

• Yamaguchi Toru

Classifications

• C08L71/12 Primary

  Polyphenylene oxides · CPC title

• F21S48/15

  Mechanical Engineering · mapped topic

• C08L91/00

  Compositions of oils, fats or waxes; Compositions of derivatives thereof · CPC title

• C08J5/00

  Manufacture of articles or shaped materials containing macromolecular substances (manufacture of semi-permeable membranes B01D67/00 - B01D71/00) · CPC title

• C08L53/025

  modified · CPC title