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FLAME RETARDANT EPOXY RESIN COMPOSITION,prepreg product, insulation sheet, adheresion sheet, laminated plate, sealing material, casting material and solidifying material

A technology of epoxy resin and flame retardancy, which is applied in the field of epoxy resin cured products, can solve problems such as deterioration of adhesion, and achieve the effects of low dielectric constant, excellent dielectric properties, and excellent properties

Active Publication Date: 2017-03-01
NIPPON STEEL CHEMICALL &MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to improve hygroscopicity, studies have been made on the formulation of fillers such as alumina, but there is a problem of deterioration of adhesiveness.

Method used

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  • FLAME RETARDANT EPOXY RESIN COMPOSITION,prepreg product, insulation sheet, adheresion sheet, laminated plate, sealing material, casting material and solidifying material
  • FLAME RETARDANT EPOXY RESIN COMPOSITION,prepreg product, insulation sheet, adheresion sheet, laminated plate, sealing material, casting material and solidifying material
  • FLAME RETARDANT EPOXY RESIN COMPOSITION,prepreg product, insulation sheet, adheresion sheet, laminated plate, sealing material, casting material and solidifying material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0178] Although an Example and a comparative example are given and this invention is demonstrated concretely, this invention is not limited to these examples. Unless otherwise specified, "part" means a mass part, and "%" means a mass %. In addition, the measurement method can perform measurement according to the following methods, respectively.

[0179] Epoxy equivalent: According to JIS K7236 standard.

[0180] Softening point: Measured according to JIS K7234 standard and ring and ball method. Specifically, an automatic softening point device (manufactured by Mindac Co., Ltd., ASP-MG4) was used.

[0181] Oxazolidone ring content (Ox, eq. / kg): In the oxazolidone ring formation reaction in this example, the epoxy group is not substantially used except for the oxazolidone ring formation reaction, so it can be It can be calculated|required from the following formula.

[0182] Ox=((Wt0 / Ep0)-(Wt / Ep)) / Wt×1000

[0183] Here, Ep0 is the epoxy equivalent (g / eq.) of the raw materia...

Synthetic example 1

[0192] Synthesis Example 1a

[0193] 2,500 parts of phenol and 7.5 parts of oxalic acid dihydrate were placed in a separable glass flask equipped with a stirring device, a thermometer, a nitrogen gas introduction device, a condenser pipe, and a dropping device, and stirred while injecting nitrogen gas, and heated. heat up. Next, 474.1 parts of 37.4% formalin was dripped and made to react over 30 minutes, stirring at 80 degreeC. Further, reaction was performed for 3 hours while maintaining the reaction temperature at 92°C. The temperature was raised, and the reaction product water was removed to the outside of the system, and the temperature was raised to 110°C. Residual phenol was recovered at 160° C. under reduced pressure, and the temperature was further increased to 250° C. to recover a part of dinuclear bodies to obtain a phenol novolak resin (1a) in which dinuclear bodies were reduced. The dinuclear body content rate and trinuclear body content rate of the obtained phe...

Synthetic example 2

[0200] Change diphenylmethane diisocyanate into polymethylene polyphenyl polyisocyanate (manufactured by Mitsui Chemicals Co., Ltd., Cosmonet M-50, NCO concentration is 34%) 7.5 parts (equivalent ratio (e / d ) = 0.10), and synthesized using the same apparatus and procedure as in Synthesis Example 1c to obtain an oxazolidone ring-containing novolak-type epoxy resin (resin 2).

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Abstract

The invention provides a flame-retardant epoxy resin composition having performance superior in low dielectric property, high heat resistance and high adhesive property and useful for lamination, molding, casting, adhesion and the like, a prepreg product, an insulation sheet, an adhesion sheet, a laminated plate, sealing material, casting material and solidifying mateiral. The flame-retardant epoxy resin composition contains an epoxy resin (A), a curing agent (B) and a phosphorus compound (C) as a flame retardant, wherein the epoxy resin (A) and the curing agent (B) having a phosphorus content of 0.2 to 6 mass% based on the total of phosphorus compound (C) and phosphorus compound (C), 5 mass parts of novolac type epoxy resin (A1) having oxazolidone ring in the molecule % or more, and the epoxy equivalent of the epoxy resin (A1) is 170 to 450 g / eq. , and the oxazolidone ring content is 0.02 to 3.0 eq. / Kg. 2.

Description

technical field [0001] The present invention relates to a flame-retardant epoxy resin composition capable of providing a cured product excellent in flame retardancy, low dielectric properties, high heat resistance, low moisture absorption, and high adhesiveness, and an epoxy resin composition obtained from the composition. Cured epoxy resins, prepregs, insulating sheets, adhesive sheets, laminates, sealing materials, and casting materials. Background technique [0002] Epoxy resins are used in various fields such as coatings, civil engineering adhesion, casting, electrical and electronic materials, and film materials because of their excellent adhesion, flexibility, heat resistance, chemical resistance, insulation, and curing reactivity. In particular, epoxy resins are widely used for printed wiring board applications, which are one of electrical and electronic materials, by imparting flame retardancy to epoxy resins. [0003] As one of the uses of printed wiring boards, in...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K7/14C08J5/24
CPCC08J5/24C08L63/00C08J2363/00C08L2201/02C08L2205/025C08L2205/035C08J2463/00C08K7/14C08L63/04C08G59/08C08G59/1477C08G59/18C08G59/245C08G59/304C08G59/4028C08G59/4071C08L2666/82C08J2363/04
Inventor 冈崎有起宗正浩石原一男高岛智行三宅力新田龙三
Owner NIPPON STEEL CHEMICALL &MATERIAL CO LTD
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