Epoxy resin composition, its cured product and light emitting diode

A technology of epoxy resin and composition, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of easy damage to colorless transparency, etc., and achieve excellent heat resistance and coloring, increased viscosity increase speed, and operability excellent effect
CN104781301BActive Publication Date: 2016-10-12MITSUBISHI GAS CHEM CO INC
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
MITSUBISHI GAS CHEM CO INC
Publication Date
2016-10-12

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Abstract

This epoxy resin composition contains an acid anhydride (A) and an epoxy resin (B), and is characterized in that (a) the acid anhydride (A) contains 30-90% by mass of cyclohexane-1,2,4-tricarboxylic acid-1,2-anhydride, (b) the epoxy resin (B) contains 30-90% by mass of an alicyclic epoxy resin compound and a glycidyl ester epoxy resin compound, and (c) the blending equivalent ratio of the acid anhydride to the epoxy resin, said blending equivalent ratio being represented by formula (1), is within the range of 0.4-0.7. Blending equivalent ratio of acid anhydride to epoxy resin = (X + Y) / Z (1) X: the number of functional groups of the acid anhydride groups contained in the acid anhydride (A) Y: the number of functional groups of the carboxyl groups contained in the acid anhydride (A) Z: the number of functional groups of the epoxy groups contained in the epoxy resin (B)
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Description

technical field

[0001] The invention relates to an epoxy resin composition, its cured product and a light emitting diode. Background technique

[0002] In recent years, high-brightness blue and white light-emitting diodes (hereinafter also abbreviated as "LEDs") have been developed, and their applications have expanded to bulletin boards, full-color displays, backlights for mobile phones, and the like. Conventionally, acid anhydride-curable epoxy resins are excellent in colorless transparency, and therefore have been used as sealing materials for photoelectric conversion elements such as LEDs.

[0003] As a curing agent for the epoxy resin used in the sealing material of the above-mentioned photoelectric conversion element, methyl hexahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, hexahydrophthalic anhydride, tetrahydrophthalic anhydride, tetrahydrophthalic anhydride, Alicyclic acid anhydrides such as hydrogen phthalic anhydride.

[0004] When the epoxy resi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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