Preparation method of phosphorus-modified phenolic resin

A phenolic resin and phosphorus modification technology is applied in the field of preparation of phosphorus-modified phenolic resin to achieve the effects of excellent coating performance, improved heat resistance and reduced environmental pollution

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
Comparison scheme
Effect test

Embodiment Construction

[0021] Table 1, Table 2, Table 3, and Table 4 are the raw material components and reaction conditions in Examples 1 to 20. The phenols described in Examples 1 to 20 are all p-tertylphenol, Mixed phenol of nonylphenol and bisphenol A.

[0022] Combining the reaction raw material components and reaction conditions given in Table 1, Table 2, Table 3, and Table 4, prepare according to the following preparation steps:

[0023] A. Take phenol, formaldehyde and water into a four-necked flask and mix evenly, then add the catalyst to mix evenly, put the four-necked flask in 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. Put the phenolic condensate obtained in step A back into the four-necked flask, add the monohydric alcohol and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and mix well, and then add the trioxide Aluminium and sulfuric acid are used as catalysts....

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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, bisphenol A 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 resin, and specifically relates to a preparation method of phosphorus-modified phenolic resin. Background technique [0002] At present, the domestic phosphorus-modified resin system is only limited to the phosphorus-modified epoxy resin system, which is mainly used in the coating field of electronic sealing plastic 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 electronic coating field. In response to the special needs of the market, in the United States in the early twentieth century, some international large chemical companies began to explore the use of organic phosphoru...

Claims

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Application Information

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IPC IPC(8): C08G8/36
Inventor 关炽昌刘涛
Owner 梁劲捷
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