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High dielectric resin compsn.

A resin composition, high dielectric technology, used in capacitors, electrical components, fixed capacitor dielectrics, etc., can solve problems such as large dielectric loss tangent

Active Publication Date: 2006-02-01
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventionally, high dielectric resins with a high dielectric constant (relative dielectric constant of 5 or more) have been successfully manufactured using a resin mixture that incorporates high dielectric fillers such as barium titanate and strontium titanate into the resin thin film, however, higher dielectric constant leads to larger dielectric loss tangent (Electonic Material 2002, September, p. 29, edited by Kogyo Chosakai Publishing Co., Ltd.)

Method used

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  • High dielectric resin compsn.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0120] Into a reaction vessel equipped with a stirrer, torque meter, nitrogen introduction tube, thermometer and reflux condenser, 141 g (1.02 mol) of p-hydroxybenzoic acid, 63.3 g (0.34 mol) of 4,4'-dihydroxybis Benzene, 56.5 grams (0.34 moles) of isophthalic acid, and 191 grams (1.87 moles) of acetic anhydride. After sufficiently replacing the inside of the reaction vessel with nitrogen, the inside thereof was heated to 150° C. during 15 minutes under a nitrogen flow, and the temperature was maintained at reflux for 3 hours.

[0121] Then, it was internally heated to 320° C. during 170 minutes, and distillation by-product acetic acid and unreacted acetic anhydride were evaporated, when a rise in torque was observed, the reaction was considered complete, and the reactor contents were removed. The resulting solid was cooled to room temperature and ground with a coarse grinder, then kept at a temperature of 250° C. for 3 hours under a nitrogen atmosphere, and solid-phase polyme...

Embodiment 2

[0127] Into a reaction vessel equipped with a stirrer, torque meter, nitrogen introduction tube, thermometer and reflux condenser, 128 g (0.68 mol) of 2-hydroxy-6-naphthoic acid, 63.3 g (0.34 mol) of 4,4' - Dihydroxybiphenyl, 56.5 grams (0.34 moles) of isophthalic acid, and 152.7 grams (1.50 moles) of acetic anhydride. After the inside of the reaction vessel was sufficiently replaced with nitrogen, the inside was heated to 150° C. in 15 minutes under a nitrogen flow, and the temperature was maintained at reflux for 3 hours.

[0128]Then, it was internally heated to 320° C. during 170 minutes, and distillation by-product acetic acid and unreacted acetic anhydride were evaporated, when a rise in torque was observed, the reaction was considered complete, and the reactor contents were removed. The resulting solid was cooled to room temperature and ground with a coarse grinder, then kept at a temperature of 250° C. for 3 hours under a nitrogen atmosphere, and subjected to solid pha...

Embodiment 3

[0134] A high dielectric resin film was obtained in the same manner as in Example 2, but using HF-120 manufactured by Kyoritsu Material as the high dielectric filler. When the temperature T of NF-120 is -20℃≤T≤80, [(ε T -ε 25 ) / ε 25 ] with a maximum value of 0.01 or less and a relative permittivity ε at 25°C 25 for 120.

[0135] The relative permittivity and dielectric loss tangent of the resulting high dielectric resin film measured with an impedance analyzer manufactured by HP were 17.0 and 0.002 (frequency: 1 GHz), respectively.

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Abstract

A high-dielectric resin composition used to prepare the resin film with high dielectric constant and small medium loss angle is prepared from high-dielectric filler and resin.

Description

technical field [0001] The invention relates to a high dielectric resin composition. Background technique [0002] In recent years, in the field of information and communication equipment, resin compositions that can be used to produce high-dielectric resin films with high dielectric constant and small dielectric loss tangent are required, because the frequency used for capacitors or antennas built in base materials has become high frequency (100MHz or higher). [0003] Conventionally, high dielectric resins with a high dielectric constant (relative dielectric constant of 5 or more) have been successfully manufactured using a resin mixture that incorporates high dielectric fillers such as barium titanate and strontium titanate into the resin For thin films, however, a higher dielectric constant leads to a larger dielectric loss tangent (Electonic Material 2002, September, p. 29, edited by Kogyo Chosakai Publishing Co., Ltd.). Contents of the invention [0004] An object ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L81/06C08J5/18C08K3/22H01G2/00H01G4/18
Inventor 冈本敏片桐史朗
Owner SUMITOMO CHEM CO LTD