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Polyfunctional acid anhydride, a thermosetting resin composition and its cured prepreg

A technology of thermosetting resin and polyfunctional acid anhydride, applied in the field of polyfunctional acid anhydride and thermosetting resin composition, can solve the problems of insufficient heat resistance and insufficient transparency of cured products, and achieve excellent coloring resistance, good stability

Active Publication Date: 2015-04-29
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned cured product can provide high transparency, but compared with aromatic anhydrides, the skeleton is soft, and because it is difunctional, it is also insufficient in heat resistance
In addition, the isocyanurate compound of Patent Document 5 is trifunctional, and the transparency of the cured product is insufficient due to the coloring derived from the isocyanurate.

Method used

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  • Polyfunctional acid anhydride, a thermosetting resin composition and its cured prepreg
  • Polyfunctional acid anhydride, a thermosetting resin composition and its cured prepreg
  • Polyfunctional acid anhydride, a thermosetting resin composition and its cured prepreg

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Experimental program
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Embodiment

[0121] Next, the present invention will be described in more detail based on examples. In addition, this invention is not limited at all by the following Examples. In the synthesis of the compound, when the disappearance of the raw material alcohol was confirmed by gel permeation chromatography (hereinafter referred to as "GPC"), the reaction was regarded as complete. In addition, in the examples, TMAC represents trimellitic anhydride acid chloride, HTAC represents nuclear hydrogenated trimellitic anhydride acid chloride, THF represents tetrahydrofuran, TMP represents trimethanol propane, DPE represents dipentaerythritol, PE4EO represents pentaerythritol 4 moles of ethylene oxide plus The finished product, DE6EO means dipentaerythritol 6 mole ethylene oxide adduct, DPE4C means dipentaerythritol 4 mole caprolactone adduct, MEK means methyl ethyl ketone.

Synthetic example 1

[0122] Synthesis Example 1: Synthesis of Dipentaerythritol 4 Mole Caprolactone Adduct (DPE4C)

[0123] In a flask equipped with a stirrer, a reflux cooling tube, and a stirring device, 45.66 g (400 mmol) of caprolactone was added to 25.43 g (100 mmol) of dipentaerythritol, and stirred at 180° C. for 12 hours to obtain di Pentaerythritol 4 mole caprolactone adduct 71.09g.

Synthetic example 2

[0124] Synthesis Example 2: Preparation of Copolymerized Epoxy Resin

[0125] In a flask equipped with a stirrer, a reflux cooling tube, and a stirring device, 30 g of glycidyl methacrylate, 30 g of methyl methacrylate, 40 g of butyl methacrylate, and methyl ethyl methacrylate as a solvent were added while purging nitrogen gas. 200 g of ketones and 1 g of azobisisobutyronitrile as a reaction initiator were subjected to a polymerization reaction at 80° C. for 5 hours.

[0126] After completion|finish of reaction, it heated to 90 degreeC, the solvent was distilled off under reduced pressure, and the copolymer type epoxy resin was obtained. The molecular weight of the obtained copolymer epoxy resin was 15,000 in terms of polystyrene by GPC, the number average molecular weight was 30,000, and the epoxy equivalent was 470 g / eq.

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Abstract

The present invention provides a polyfunctional acid anhydride, a thermosetting resin composition and its cured prepreg. The present invention achieves a method of providing transparency, heat resistance, toughness, excellent in resistance to coloring the cured resin composition, in particular to obtain a resin composition having characteristics suitable for the optical parts. The present invention is a polyol molecule containing at least three hydroxyl groups (A), and trimellitic anhydride acid halide and nuclear-hydrogenated trimellitic anhydride acid halide or a mixture of nuclear-hydrogenated trimellitic anhydride acid halide reaction resulting polyfunctional acid anhydride; and a polyol (A) and is selected from alkylene, cyclic ethers, cyclic esters, and the group consisting of one or more kinds of reaction, the reaction and the resulting polyol (B comprising the heat and is a molecule with a polyfunctional acid anhydride having at least one epoxy group compound;) with trimellitic anhydride acid halide, and the nuclear hydrogenation trimellitic anhydride acid halide obtained by reacting polyfunctional acid anhydride curable resin composition.

Description

technical field [0001] The present invention relates to a polyfunctional acid anhydride, a thermosetting resin composition containing the polyfunctional acid anhydride, and a cured product thereof. The cured product of the present invention has the characteristics of being excellent in transparency, heat resistance, toughness, and coloring resistance. Background technique [0002] Acid anhydrides have high thermal stability or transparency, good electrical properties, chemical resistance, etc., and have excellent properties such as the formation of condensates or good reactivity as crosslinking agents, condensing agents, etc., and are widely used in polymer manufacturing raw materials. It is also known that acid anhydrides can also be used as hardeners for epoxy resins. [0003] A curable resin composition containing an epoxy resin is used as a resin excellent in heat resistance in a wide range of fields. In recent years, the utilization of the composition in opto-electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/137C08G63/668C08G63/127C08G59/62C08L63/00
CPCC07D303/02C07D307/08C07D313/04C08G59/42C08J5/24
Inventor 古江诚栗桥透清柳典子
Owner NIPPON KAYAKU CO LTD
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