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Laminate

An object, insulating layer technology, applied in the direction of layered products, metal layered products, synthetic resin layered products, etc., can solve the problem of insufficient repeated flexibility

Inactive Publication Date: 2012-12-26
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The laminated object has a high degree of rigidity and is excellent in high-temperature dimensional stability (dimensional stability), but there is a problem that repeated flexibility may sometimes become insufficient

Method used

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  • Laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) Production of liquid crystal polyester

[0080] In a reactor equipped with a stirrer, a torque meter, a nitrogen inlet tube, a thermometer and a reflux condenser, 1,976 g (10.5 mol) of 6-hydroxy-2-naphthoic acid, 1,474 g (9.75 mol) of 4- - Hydroxyacetoanilide, 1,620 g (9.75 mol) of isophthalic acid and 2,374 g (23.25 mol) of acetic anhydride. After sufficiently replacing the gas in the reactor with nitrogen, the temperature was raised from room temperature to 150°C in 15 minutes while stirring under nitrogen flow, and the mixture was refluxed at 150°C for 3 hours.

[0081] By-produced acetic acid and unreacted acetic anhydride were distilled off while the temperature was raised from 150°C to 300°C in 2 hours and 50 minutes, and after being maintained at 300°C for 1 hour, the reaction mixture was taken out from the reactor. The reaction mixture was cooled to room temperature, and the resulting solid matter was crushed with a crusher to obtain a powdered prepolymer. ...

Embodiment 2

[0097] A laminated object was obtained in the same manner as in Example 1 except that the 10 µm thick glass cloth was changed to a 13 µm thick glass cloth (grade 1010) manufactured by Asahi Kasei E-materials Corporation. The impregnation amount of the liquid crystal polyester in the insulating base material is about 74.0 mass % based on 100 mass % of the total amount of the insulating base material. It was confirmed that the thickness of the glass cloth of the laminated object was the same as the original thickness (13 μm). The results are shown in Table 1.

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Abstract

A laminate including an insulating layer including one insulating base material or plural insulating base materials laid one upon another, the base material being obtained by impregnating a glass cloth having a thickness of 5 to 25 [mu]m with a liquid crystal polyester; and a metal layer provided on one surface or both, surfaces of the insulating layer.

Description

technical field [0001] The present invention relates to a laminate. Background technique [0002] JP-T-2010-528149 discloses, as a laminated object for an electronic substrate material using liquid crystal polyester, a laminated object comprising (i) a liquid crystal polyester insulating base material ( an insulating layer) obtained by impregnating a sheet made of glass fibers with a liquid composition containing a liquid crystal polyester and removing the solvent, and (ii) a metal layer. The laminated object has a high degree of rigidity and is excellent in high-temperature dimensional stability, but there is a problem that repeated flexibility may sometimes become insufficient. Contents of the invention [0003] An object of the present invention is to provide a laminated object which is excellent in high-temperature dimensional stability and repeated flexibility. [0004] The present invention relates to a laminated object comprising: an insulating layer comprising an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/04B32B15/09
CPCB32B2262/101B32B2307/734B32B15/09B32B2457/08B32B2260/021B32B2260/046H05K3/022B32B2250/40H05K1/0366B32B2307/306H05K2201/0141B32B15/14B32B5/024B32B27/04Y10T428/266B32B15/08
Inventor 伊藤丰诚莇昌平沈昌补
Owner SUMITOMO CHEM CO LTD
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