Styrene polymer composition

• US 5,219,940 A
• Filed: 09/19/1991
• Issued: 06/15/1993
• Est. Priority Date: 10/13/1989
• Status: Expired due to Term

• Current Assignee: Idemitsu Kosan Company Limited
• Original Assignee: Idemitsu Kosan Company Limited
• Inventors: Nakano, Akikazu
• Primary Examiner(s): Seidleck, James J.
• Assistant Examiner(s): Hamilton, III, Thomas
• Application Number:
  US07/762,906
• Time in Patent Office: 635 Days
• Field of Search: 525/133, 525/392, 525/397, 525/905
• US Class Current: 525/133
• CPC Class Codes: C08G 65/485 Polyphenylene oxides
• CPC Class Codes: C08L 25/06 Polystyrene
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 71/126 modified by chemical after-treatment
• CPC Class Codes: C08L 77/00 Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: H05K 1/0373 containing additives, e.g. fillers H05K1/036 takes precedence
• CPC Class Codes: Y10S 525/905 Polyphenylene oxide

Abstract

Disclosed is a styrene polymer composition comprising, in a specified proportion,

(A) a styrene polymer having no functional group, and

(B) either of polyphenylene ether having a polar group or a mixture of polyphenylene ether having a polar group and a styrene polymer having no functional group; or a styrene polymer composition comprising

(C) polyamide, as well as above Components (A) and (B).

These polymer compositions are excellent in impact resistance, water resistance, and mechanical properties, and are suitable for various purposes.

Claims

1. A styrene polymer composition comprising

(A) 99 to 1% by weight of a styrene polymer having a syndiotactic configuration,

(B) 0.1 to 50% by weight of either of polyphenylene ether having a polar group or a mixture of polyphenylene ether having a polar group and a styrene polymer having no functional group, and

(C) 0.9 to 98.9% by weight of polyamide.

2. A styrene polymer composition according to claim 1, wherein the polar group in Component (B) is an acid derivative.

3. A styrene polymer composition comprising 100 parts by weight of a styrene polymer composition according to any one of claims 1 or 2, and

(D) 1 to 350 parts by weight of a filler surface-treated with a coupling agent.

4. A styrene polymer composition according to claim 3, wherein the coupling agent used for surface treatment of the filler as Component (D) is a silane coupling agent.

5. A styrene polymer composition comprising

(A'"'"') 99 to 1% by weight of a styrene polymer having a syndiotactic configuration,

(B'"'"') 0.1 to 50% by weight of either of polyphenylene ether having anhydrous maleic acid group or a mixture of polyphenylene ether having maleic acid anhydride group and a styrene polymer having no functional group,

(C) 0.9 to 98.9% by weight of polyamide,

and (D'"'"') a filler surface-treated with aminosilane coupling agent in the proportion of 1 to 350 parts by weight based on the total of above-mentioned Components (A'"'"'), (B'"'"'), and (C'"'"').