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Nitrogen-contained phenol-formaldehyde resin, its preparation method and application

A technology of phenolic resin and nitrogen-containing monomers, applied in the direction of layered products, etc., can solve the problems of high requirements for operation means and reaction equipment, low product consistency, etc., and achieve high product quality consistency, low cost, and stable process Effect

Inactive Publication Date: 2006-07-19
康富春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods require high skills in process operation, high requirements on operation means and reaction equipment, and the product consistency is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In a 250ml three-necked flask, install a mechanical stirrer, a thermometer and a condenser, add 100g (0.5mol) bisphenol F, 68.9g (0.85mol) 37% formaldehyde solution, 37.5g (0.3mol) methyl melamine and 1ml concentrated hydrochloric acid, Heat to 85-90°C to react for 5 hours, distill off moisture and unreacted substances under reduced pressure, and raise the internal temperature to 180°C to obtain 145g of yellow-brown solid (A)

[0027] Measurement (elemental analysis): nitrogen content 14.5%

Embodiment 2

[0029] The device is the same as in Example 1, add 110g (1.0mol) resorcinol, 64.9g (0.8mol) 37% formaldehyde solution, 25.2g (0.2mol) melamine and 1ml triethylamine, react for 5 hours at 80~85°C, then Then gradually raise the temperature to 160°C, and at the same time evaporate water and unreacted substances under reduced pressure to obtain 145g of yellow solid (B)

[0030] Measurement (elemental analysis): Nitrogen content 11.6%

Embodiment 3

[0032] The device is the same as in Example 1, add 94g (1.0mol) phenol, 60.8g (0.75mol) formaldehyde solution, 25.2g (0.2mol) benzomelamine, 1ml 36% hydrochloric acid solution, heat to 90°C for 3 hours, and distill under reduced pressure Remove moisture and unreacted substances, and gradually raise the internal temperature to 170°C to obtain 127g of yellow solid (C)

[0033] Measurement (elemental analysis): nitrogen content 13.2%

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PUM

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Abstract

The disclosed nitrogenous phenolic resin has chemical formula as C6H3R1OH- (CH2- C6H2R2OH)n-CH2-X (n=2-9) with R1 and R2 as same or not hydrogen, alkyl, phenyl or hydroxyl and X as nitrogenous monomer. The product can be prepared with low cost and well quality by copolymerizing the phenols, formaldehyde and nitrogenous monomer, or drafting the pre-polymer of phenols and formaldehyde with the monomer, and has wide application.

Description

technical field [0001] The invention relates to a synthetic resin, especially a nitrogen-containing phenolic resin with flame-retardant properties. The invention also relates to a preparation method of the phenolic resin and an application of the resin. Background technique [0002] Phenolic resin is the earliest industrialized synthetic resin in the world, and it is also one of the three major thermosetting resins. The method of manufacturing phenolic resin is relatively simple, the raw materials are cheap and easy to obtain, the variety and performance can be flexibly designed according to the formula, and the product has excellent electrical properties and flame retardancy, so it is widely used in various fields, such as paints, adhesives, Coatings, molding compounds, laminated materials, foam plastics, anti-corrosion cement, ion exchange resins, etc. have been used on a large scale in the transportation industry, construction industry, military industry, and electrical a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28B32B33/00
Inventor 康富春
Owner 康富春
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