Claims
- 1. A thermoplastic composition having improved melt flow behavior, comprising:
- (a) a polyphenylene ether resin;
- (b) a rubber-modified alkenyl aromatic resin;
- (c) a low molecular weight copolymer of styrene and alpha methyl styrene in an amount which improves the melt flow of the combination of (a) and (b); and
- (d) a thermoplastic elastomer in an amount sufficient to improve the impact strength of the combination of components (a), (b), and (c).
- 2. A composition as in claim 1 wherein said thermoplastic elastomer is a block copolymer primarily comprised of styrenic units and diene rubber units.
- 3. A composition as in claim 2 wherein said thermoplastic elastomer is present in an amount of about 2 to about 20 parts by weight based upon the weight of 100 parts of (a) and (b) combined.
- 4. A composition as in claim 2 wherein said thermoplastic elastomer is a block copolymer of the A-B or A-B-A' type wherein the A and A' blocks are a styrenic polymer and the B block is a rubbery diene polymer.
- 5. A composition as in claim 4 wherein the A or A' block is styrene and the B block is polybutadiene.
- 6. A composition as in claim 5 wherein the rubbery diene polymer is partially or completely hydrogenated.
Parent Case Info
This is a division of application Ser. No. 122,100, filed Nov. 18, 1987, now U.S. Pat. No. 4,826,919.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4764559 |
Yamauchi et al. |
Aug 1988 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
122100 |
Nov 1987 |
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