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Preparation method of phosphorus-modified phenolic resin

A technology of phenolic resin and phosphorus modification is applied in the field of preparation of phosphorus-modified phenolic resin to achieve the effects of reducing environmental pollution, optimizing production conditions and excellent film-forming stability.

Inactive Publication Date: 2013-12-18
梁劲捷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a preparation method of phosphorus-modified phenolic resin, which solves the problem of completely relying on imported phosphorus-modified phenolic resin in the past

Method used

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Examples

Experimental program
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Embodiment Construction

[0021] Table 1, table 2, table 3, table 4 are the reaction raw material components and reaction conditions in embodiment 1~embodiment 20, wherein the phenol described in embodiment 1~embodiment 20 is p-tertoctylphenol, Mixed phenol of nonylphenol and p-tert-butylphenol.

[0022] In conjunction with the reaction raw material components and reaction conditions that table 1, table 2, table 3, table 4 provide, prepare according to the following preparation steps:

[0023] A. Take phenol, formaldehyde and water and add them into a four-necked flask and mix them evenly, then add a catalyst and mix them evenly, put the four-necked flask into an electric heating mantle and heat for condensation reaction to obtain a phenolic condensate, release it after cooling down, and separate it residual moisture;

[0024] B. Add the phenolic condensate obtained in step A back into the four-necked bottle, add monohydric alcohol and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and mix evenly,...

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Abstract

The invention discloses a preparation method of a phosphorus-modified phenolic resin, which comprises the following steps: performing polycondensation on p-tert-octylphenol, nonylphenol, paratert-butyl phenol and formaldehyde under the action of a catalyst to obtain a phenolic condensation intermediate; and reacting the intermediate with monohydroxy alcohols and organic phosphorus heterocyclic compounds at a preset temperature for preset time under catalytic conditions to prepare the phosphorus-modified phenolic resin. The method solves the problem of complete dependency on the phosphorus-modified phenolic resin imported from abroad in the past, and enhances the heat resistance, binding strength, peel strength, favorable space size, excellent electric properties, mechanical strength and other physicochemical performance indexes of the original phosphorus-modified phenolic resin, so that the phosphorus-modified phenolic resin has relatively good application properties when being applied to the field of electronic chemicals.

Description

technical field [0001] The invention belongs to the field of phosphorus-modified epoxy resins, and in particular relates to a preparation method of phosphorus-modified phenolic resins. Background technique [0002] At present, domestic phosphorus-modified resin systems are limited to phosphorus-modified epoxy resin systems, which are mainly used in the coating field of electronic sealing coatings. In recent years, with the continuous improvement of application requirements and application performance in the coating field, higher requirements have been put forward for the physical and chemical application performance parameters of phosphorus-modified epoxy resin curing agents. Oxygen resins can no longer meet the application requirements of this high-end field of electronic coating. In response to the special needs of the market, in the United States at the beginning of the 20th century, some international large chemical companies began to explore the use of organophosphorus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/36
Inventor 关炽昌刘涛
Owner 梁劲捷
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