Liquid crystalline polyester composition for connector and connector using the same

• US 8,231,805 B2
• Filed: 11/12/2010
• Issued: 07/31/2012
• Est. Priority Date: 11/16/2009
• Status: Active Grant

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: Yamauchi, Hiroyasu, Fukuhara, Yoshiyuki
• Primary Examiner(s): WU, SHEAN CHIU
• Application Number:
  US12/945,339
• Publication Number:
  US 20110114884A1
• Time in Patent Office: 627 Days
• Field of Search: 252/299.01, 252/299.66, 252/299.67, 252/299.5, 528/86, 528/125, 528/128, 528/176, 528/193, 528/194, 524/449, 524/495, 524/499, 524/496
• US Class Current: 252/299.01
• CPC Class Codes: C08K 3/013 Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 7/00 Use of ingredients characterised by shape
• CPC Class Codes: C08L 67/03 the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings

Abstract

The present invention provides a liquid crystalline polyester composition comprising a liquid crystalline polyester, a fibrous filler, a plate-like filler and a granular filler. The connector obtained using the liquid crystalline polyester composition has poor filling suppressed and is excellent in warp resistance and crack resistance.

Claims

1. A liquid crystalline polyester composition comprising a liquid crystalline polyester, a fibrous filler, a plate-like filler and a granular filler, wherein the granular filler has an average particle diameter of 10 to 100 μ

m.

2. The liquid crystalline polyester composition according to claim 1, in which the fibrous filler is contained in an amount of 5 to 80 parts by mass based on 100 parts by mass of the liquid crystalline polyester.

3. The liquid crystalline polyester composition according to claim 1, in which the plate-like filler is contained in an amount of 5 to 80 parts by mass based on 100 parts by mass of the liquid crystalline polyester.

4. The liquid crystalline polyester composition according to claim 1, in which the granular filler is contained in an amount of 5 to 80 parts by mass based on 100 parts by mass of the liquid crystalline polyester.

5. The liquid crystalline polyester composition according to claim 1, wherein the fibrous filler has an average fiber diameter of 5 to 20 μ

m and a number average fiber length of 100 μ

m or more.

6. The liquid crystalline polyester composition according to claim 1, wherein the plate-like filler has an average particle diameter of 10 to 100 μ

m.

7. The liquid crystalline polyester composition according to claim 1, wherein the liquid crystalline polyester contains 30% by mol or more of the following structure unit:

8. A connector formed of the liquid crystalline polyester composition according to claim 1.