LIQUID-CRYSTALLINE POLYMER COMPOSITION AND MOLDED ARTICLE THEREOF

• US 20110210290A1
• Filed: 02/24/2011
• Published: 09/01/2011
• Est. Priority Date: 02/26/2010
• Status: Abandoned Application

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: HARADA, Hiroshi, MATSUI, Hirokazu
• Application Number:
  US13/034,049
• Publication Number:
  US 20110210290A1
• Time in Patent Office: Days
• US Class Current: 252/299.6
• CPC Class Codes: C08L 67/00 Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain of polyester-amides C08L77/12; of polyester-imides C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 81/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 81/06 Polysulfones; Polyethersulfones
• CPC Class Codes: C09K 19/3809 Polyesters; Polyester derivatives, e.g. polyamides
• CPC Class Codes: C09K 19/542 Macromolecular compounds

Abstract

The present invention provides a liquid-crystalline polymer composition comprising:

a liquid-crystalline polymer and an aromatic polysulfone resin having oxygen-containing groups selected from among hydroxyl groups and oxyanion groups in an amount of 6×10⁻⁵ or more in number per 1 g of the polysulfone resin. The composition can suppress rise of specific gravity and reduction of heat resistance and can stably provide a molded article having excellent mechanical characteristics.

Claims

1. A liquid-crystalline polymer composition comprising:

a liquid-crystalline polymer and

an aromatic polysulfone resin having oxygen-containing groups selected from among hydroxyl groups and oxyanion groups,

in an amount of 6×

10<sup>−

5</sup> or more in number per 1 g of the polysulfone resin.

2. The composition according to claim 1, wherein the aromatic polysulfone resin is contained in the composition in an amount of from 0.5 to 100 parts by weight based on 100 parts by weight of the liquid-crystalline polymer.

3. The composition according to claim 1, wherein the aromatic polysulfone resin has a repeat unit represented by the following formula (1):

-Ph¹-SO₂-Ph²-O—

 

 

(1)

wherein Ph¹ and Ph² each independently represent a group represented by the following formula (4);

4. The composition according to claim 1, wherein the aromatic polysulfone resin has a reduced viscosity of from 0.25 to 0.6 dl/g.

5. A molded article obtained from the composition according to claim 1.