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Novolac resin and epoxy resin composition using the same

A novolac resin and epoxy resin technology, applied in the field of online phenolic resin, can solve the problems of heat resistance, combustion resistance, solubility, etc., and achieve the effect of improving heat resistance, combustion resistance, and excellent solubility

Active Publication Date: 2016-04-27
UBE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Patent Documents 1 and 2 do not specifically disclose or teach that when a 4,4'-body such as 4,4'-bis(methoxymethyl)biphenyl is used alone as a biphenyl compound, it will affect the heat resistance. properties, flame resistance, solubility, etc.

Method used

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  • Novolac resin and epoxy resin composition using the same
  • Novolac resin and epoxy resin composition using the same
  • Novolac resin and epoxy resin composition using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0147] Add phenol 188.0g (2.0 mole) and α-naphthol 123.4g (0.9 mole) in the capacity of 1000mL glass flask that possesses thermometer, feeding / distillation outlet, cooler and stirrer, be heated up to inner temperature under nitrogen flow. 60°C, thereby dissolving the raw material. Add 179.3 g (0.7 mol) of 4,4'-bis(chloromethyl)biphenyl, react at an internal temperature of 60°C to 100°C for 4 hours, and then react at 165°C for 3 hours, and then pass the decompression-steam Work up to remove unreacted components of the starting material.

[0148] The softening point of the obtained novolac resin is 113 DEG C, and the hydroxyl equivalent is 263g / eq, the ratio of the unit of the general formula (2) measured by HPLC and the unit of the general formula (3) [general formula (2) Unit / unit of general formula (3)] was 30 / 70, and the ratio of the component represented by general formula (4) was 15%. The evaluation of the solubility of this novolak resin was judged to be ◯.

[0149] In...

Embodiment 2

[0152] Add phenol 84.6g (0.9 mol) and α-naphthol 129.6g (0.9 mol) in the glass flask of 1000mL in the capacity that possesses thermometer, feeding / distillation outlet, cooler and stirrer, be heated up to inner temperature under nitrogen stream. 60°C, thereby dissolving the raw material. Add 180.7 g (0.7 mol) of 4,4'-bis(chloromethyl)biphenyl, react at an internal temperature of 60°C to 100°C for 4 hours, and then react at 165°C for 3 hours, and then pass the decompression-steam Work up to remove unreacted components of the starting material.

[0153] The softening point of the obtained novolac resin is 131 DEG C, and the hydroxyl equivalent is 256g / eq, and the ratio of the unit of the general formula (2) and the unit of the general formula (3) measured by HPLC [of the general formula (2) Unit / unit of general formula (3)] was 20 / 80, and the ratio of the component represented by general formula (4) was 18%. The evaluation of the solubility of this novolak resin was judged to b...

Embodiment 3

[0157] Add phenol 94.0g (1.0 mole) and α-naphthol 144.0g (1.0 mole) in the capacity of 1000mL glass flask equipped with thermometer, feeding / distillation outlet, cooler and stirrer, be heated up to internal temperature under nitrogen stream. 60°C, thereby dissolving the raw material. Add 161.9 g (0.7 mol) of 4,4'-bis(chloromethyl)biphenyl, react at an internal temperature of 60°C to 100°C for 4 hours, and then react at 165°C for 3 hours, and then pass the decompression-steam Work up to remove unreacted components of the starting material.

[0158] The obtained novolak resin had a softening point of 117° C., a hydroxyl equivalent of 247 g / eq, and a ratio of the component represented by the general formula (4) measured by HPLC was 24%. The evaluation judgment of the solubility of this novolak resin was Δ.

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Abstract

The problem of the present invention is to provide an epoxy resin composition comprising novolak resin (more specifically phenol - an epoxy resin composition of a naphthol novolac resin) and an epoxy resin, which significantly improves the heat resistance and combustion resistance of the cured product obtained. The novolac resin of the present invention has a chemical structure represented by the following general formula (1). (In the formula, A each independently represents a monovalent or divalent unit of the following general formula (2) or a monovalent or divalent unit of the general formula (3), n is an integer of 0 to 20, R1 each independently represents an alkyl group having 1 to 8 carbon atoms, and p and q are each independently an integer of 0 to 2.).

Description

technical field [0001] The present invention relates to epoxy resin compositions and phenol novolak resins suitably used in the epoxy resin compositions. The epoxy resin composition of the present invention improves the heat resistance and combustion resistance of the obtained cured product. In addition, since the epoxy resin composition of the present invention is preferably used because of its excellent solubility, it can be easily and uniformly dissolved in a solvent, and thus can be suitably used for, for example, production of laminated boards. Background technique [0002] Epoxy resin compositions have good workability, and their cured products have excellent electrical properties, heat resistance, adhesiveness, moisture resistance, etc., so they are widely used in electrical and electronic components, structural materials, adhesives, and coatings and other fields. [0003] However, in recent years, epoxy resin compositions have been required to further improve vario...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/02B32B27/38C08G59/42
CPCC08G61/02B32B5/26B32B5/28B32B15/14B32B15/20B32B2250/05B32B2250/40B32B2260/023B32B2260/046B32B2262/101B32B2307/206B32B2307/3065B32B2457/08C08J2363/04C08G2261/3424C08G2261/76C08G59/621C08L63/00C08G59/62C08J5/244
Inventor 冈本慎司藤永匡敏木村绘梨奈
Owner UBE IND LTD
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