Naphthol phenolic cyanate ester resin and synthesis method thereof

A technology for naphthol novolac cyanate and naphthol novolac resin, which is applied in the field of polymer synthesis, can solve the problems of low yield, high product impurity content, can not meet the performance requirements of matrix resin, etc., and achieves good heat resistance. properties, reducing side reactions, and good flame retardancy

Inactive Publication Date: 2012-07-11
GUANGDONG SHENGYI SCI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this synthesis method has low yield and high content of impurities, which cann

Method used

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  • Naphthol phenolic cyanate ester resin and synthesis method thereof
  • Naphthol phenolic cyanate ester resin and synthesis method thereof
  • Naphthol phenolic cyanate ester resin and synthesis method thereof

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preparation example Construction

[0040] The synthetic method of naphthol novolac type cyanate resin of the present invention, comprises the steps:

[0041] Step 1: Dissolving the naphthol phenolic resin and the catalyst in an organic solvent, and fully stirring to dissolve and mix evenly; the catalyst is trialkylamine, preferably triethylamine.

[0042] Step 2: Add the solvent and cyanogen halide into the reaction kettle, and stir fully to make it evenly mixed; the solvent is a single solvent or a mixed solvent in ethers, ketones, esters, chlorinated hydrocarbons, aromatics, tetrahydrofuran, preferably Dichloromethane or trichloromethane; cyanogen halide is cyanogen chloride or cyanogen bromide, preferably cyanogen chloride. Wherein the feeding ratio of each component in steps 1 and 2 is as follows: naphthol phenolic resin (equivalent) 1.0; cyanogen halide (equivalent) 1.1-2.0; catalyst (equivalent) 1.0-1.5.

[0043] Step 3: Keep the temperature in step 2 stable at 0°C to -20°C, add the uniformly mixed solut...

Embodiment 1

[0048] Add 300 g of chloroform and 0.98 mol of cyanogen chloride into the three-necked flask, stir well to make them evenly mixed, and stabilize the temperature at -10°C. 70g (OH group content 0.50mol) naphthol phenolic resin (softening point: 92 ° C, OH equivalent: 140g / eq, provided by Nippon Kayaku Co., Ltd., structural formula as shown in (3) formula), 0.74mol triethylamine Dissolve in 700g of chloroform and mix evenly, slowly add this solution dropwise to the above cyanogen chloride solution in chloroform at -10°C, the dropping time is more than 120min. After the dropwise addition was completed, the reaction was continued for 3 hours to end the reaction. The salt generated by the reaction was filtered off with a funnel, and the resulting filtrate was washed with 500 milliliters of 0.1 mol / L hydrochloric acid, and then washed five times with deionized water until neutral. Sodium sulfate was added to the separated chloroform solution to remove the moisture in the chloroform...

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Abstract

The invention relates to naphthol phenolic cyanate ester resin and a synthesis method thereof. The structural formula of the naphthol phenolic cyanate ester resin is shown in the specification, wherein R1, R2 and Rr are H atom, alkyl or aralkyl; and n is an integer of 1-50. The naphthol phenolic cyanate ester resin is prepared by taking naphthol phenolic resin and cyanogen halide as raw materials and taking trialkylamine as a catalyst. The prepared naphthol phenolic cyanate ester resin can be applied in the fields of high-end composite materials, high-frequency circuit substrates, IC (Integrated Circuit) package substrates, and the like.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, in particular to a naphthol novolak type cyanate resin and a synthesis method thereof. Background technique [0002] Cyanate ester resin has excellent dielectric properties, heat resistance, mechanical properties and processability. It has been widely used in high-tech fields such as aerospace and electronic technology, and has also made many remarkable progress. [0003] The bisphenol A cyanate resin composition has excellent dielectric properties, heat resistance, chemical resistance, adhesiveness, etc., so it is widely used in the fields of high-frequency circuit substrates, IC packaging substrates, and the like. However, its cured product has the problems of high water absorption rate and insufficient moisture and heat resistance, and its mechanical properties such as elastic modulus cannot meet the performance requirements of high-end substrates. [0004] The DCPD type cyanate resin composi...

Claims

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Application Information

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IPC IPC(8): C08G8/28
Inventor 唐军旗曾宪平
Owner GUANGDONG SHENGYI SCI TECH
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