Amorphous wholly aromatic polyester amide composition

A polyester amide and fully aromatic technology, which is applied in the field of amorphous wholly aromatic polyester amide compositions, can solve the problems of poor adhesion of different polymers, concurrent gelation, and insufficient stretchability, etc.

Inactive Publication Date: 2006-02-08
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But, according to the follow-up experiment of the present inventor, in JP-A-57-177019, JP-61-239013, JP-63-191824, JP-5-170902, JP-2001- The liquid crystalline polyester amide proposed in the No. 200034 bulletin shows some excellent physical properties and can be used in fibers, blow molded products, etc., but sometimes the stretchability is not sufficient, and the bonding with different polymers is difficult. Therefore, it has the disadvantage that it cannot be used substantially in multilayer films or multilayer sheets, multilayer blow molded products, etc.
In addition, the attempt proposed in JP-A-9-12744 also had to strictly set compounding conditions due to the excellent heat resistance of liquid crystalline polymers, and the types of thermoplastic resins that can be substantially used were limited. For example, the introduction of Resins for alloys with reactive groups, etc., have the problem of side reactions such as gelation during kneading

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] Hereinafter, the present invention will be described in more detail using examples, but the present invention is not limited by these examples. The methods of measuring physical properties in Examples are as follows.

[0084] [melting point, glass transition temperature]

[0085] The temperature was measured with a differential scanning calorimeter (DSC7 manufactured by Perkin-Elmer) at a temperature increase of 20°C / min.

[0086] [melt viscosity]

[0087] At a temperature of 250°C and a shear rate of 1000sec -1 Under the condition of , use a capillograph manufactured by Toyo Seiki using an orifice with an inner diameter of 1 mm and a length of 20 mm.

[0088] [Adhesive strength]

[0089] A 100 μm-thick sheet of Admer SF731 manufactured by Mitsui Chemicals was used as a bonding counterpart material, and after hot plate welding at a temperature of 220° C., a 15 mm-wide peel test piece was cut out to measure the maximum peel strength.

manufacture example 1

[0090] Production Example 1 (production of liquid crystalline polymer (a))

[0091] Into a polymerization vessel equipped with a stirrer, a reflux column, a monomer input port, a nitrogen introduction port, and a decompression / outflow line, the following raw material monomers and metal catalysts (30 ppm based on K1 relative to the produced polymer) were charged. , an acylating agent (1.02 times the equivalent of the total of the amino group and the hydroxyl group), and start nitrogen substitution.

[0092] (A) 4-hydroxybenzoic acid 59.22g (20mol%)

[0093] (B) 161.38 g (40 mol %) of 2-hydroxyl-6-naphthoic acid

[0094] (C) Acetoxy-4-aminophenol 71.23g (20mol%)

[0095] (D) 64.81g (20 mol%) of isophthalic acid

[0096] Potassium acetate catalyst 22.5mg

[0097] Acetic anhydride 178.6g

[0098] After charging the raw materials, the temperature of the reaction system was raised to 140°C, and reacted at 140°C for 1 hour. Then, the temperature was raised to 330° C. over 3.3 h...

manufacture example 2

[0100] Production Example 2 (production of liquid crystalline polymer (b))

[0101]Polymerization was carried out in the same manner as in Production Example 1, except that the charge amount of the raw material monomers was as follows.

[0102] (A) 4-hydroxybenzoic acid 122.8g (40mol%)

[0103] (B) 125.48 g (30 mol %) of 2-hydroxy-6-naphthoic acid

[0104] (C) Acetoxy-4-aminophenol 55.39g (15mol%)

[0105] (D) 50.39g (15 mol%) of isophthalic acid

[0106] Potassium acetate catalyst 22.5mg

[0107] Acetic anhydride 196.7g

[0108] The obtained liquid crystalline polymer (b) showed no melting point, had a glass transition temperature of 136.4°C, and a melt viscosity of 173.1 Pa·s.

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Abstract

An amorphous, wholly aromatic polyesteramide composition which is excellent in stretchability and adhesion to different kinds of polymers. The composition is obtained by incorporating 1 to 30 wt.% modified polyolefin resin or polyamide resin which has a melting point of 230 DEG C or lower or is amorphous into a wholly aromatic amorphous polyesteramide which becomes optically anisotropic upon softening / fluidization and is obtained by copolymerizing (A) 4-hydroxybenzoic acid, (B) 2-hydroxy-6-naphthoic acid, (C) 7 to 35 mol% aromatic aminophenol (based on all monomers), and (D) one or more aromatic dicarboxylic acids 35 mol% or more of which are accounted for by isophthalic acid, provided that the ingredient (C) may be replaced by (C)' 3 to 15 mol% aromatic diamine (based on all monomers), the proportion of flexible monomers in all starting monomers being 7 to 35 mol% and the (A) / (B) ratio being from 0.15 to 4.0, and which has a glass transition temperature of 100 to 180 DEG C and gives no melting point when analyzed by DSC.

Description

technical field [0001] The present invention relates to an amorphous wholly aromatic polyester amide composition used for films or sheets, blow molded articles, and the like. More specifically, it relates to an amorphous wholly aromatic polyester amide composition used for a multilayer film, a multilayer sheet, a multilayer blow molded article, and the like. Background technique [0002] Liquid crystal polymers are widely used as high-performance engineering plastics due to their well-balanced fluidity, mechanical strength, heat resistance, chemical resistance, and electrical properties, but most of them are exclusively injected obtained by molding. [0003] On the other hand, with the remarkable industrial development in recent years, the applications of liquid crystalline polymers also span many fields, and there is a tendency to be more advanced and specialized. By making full use of the gas permeability resistance of liquid crystalline polymers, Efficient and economica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/12C08G69/44C08L23/02C08L23/08C08L77/00
CPCC08L23/0869C08L77/00Y10T428/24017C08L77/12C08L23/02C08L23/00C08L2666/06C08L2666/20B32B1/02B32B27/08B32B27/32B32B27/34C08G69/44
Inventor 中根敏雄横田俊明大竹峰生盐饱敏雄
Owner POLYPLASTICS CO LTD
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