Liquid-crystalline polymer composition and molding method

• US 20020190432A1
• Filed: 04/16/2002
• Published: 12/19/2002
• Est. Priority Date: 03/14/2000
• Status: Abandoned Application

• Current Assignee: Polyplastics Co., Ltd. (Daicel Corporation)
• Original Assignee: Polyplastics Co., Ltd. (Daicel Corporation)
• Inventors: Shiwaku, Toshio, Miyashita, Takayuki
• Application Number:
  US10/110,735
• Publication Number:
  US 20020190432A1
• Time in Patent Office: Days
• US Class Current: 264/328.1
• 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 77/12 Polyester-amides

Abstract

To provide liquid crystal polymer materials superior in shortening the molding time, which are suitable for connectors, electronic appliances, etc. That is, a liquid crystal polymer composition including (A) from 90 to 50% by weight of a liquid crystal polymer made of a specified aromatic polyester and (B) from 10 to 50% by weight of a liquid crystal polymer made of a specified aromatic polyester amide.

Claims

1. A liquid crystal polymer composition capable of shortening the molding time, which comprises 90 to 50% by weight of a liquid crystal polymer (A) having the following structural unit (I) or {(I)+(II)+(III)} 10 to 50% by unit {(I′

)+(II′

)+(III′

)+(IV)};

2. The composition according to claim 1, wherein X₁ in the structural unit (I) of the liquid crystal polymer (A) essentially contains the following group:

3. The composition according to claim 1 or 2, wherein the liquid crystal polymer (A) comprises the structural unit (I).

4. The composition according to claim 1, further comprising 1 to 150 parts by weight of a fibrous filler (C), based on 100 parts by weight of the total weight of the liquid crystal polymer composition comprising the liquid crystal polymer (A) and the liquid crystal polymer (B).

5. The composition according to claim 4, wherein the f ibrous filler (C) is a glass fiber.

6. A molding method comprising subjecting the liquid crystal polymer composition according to claim 1 to injection molding within a molding cycle of 1.5 seconds.