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Preparation method of cashew nut oil modified alkyd resin

A technology of phenolic resin and cashew nut oil, which is applied in the direction of chemical instruments and methods, layered products, metal layered products, etc., can solve the problem of not specifying the amount of phenol, etc., and achieve excellent flexibility, good heat resistance, and low price Effect

Inactive Publication Date: 2007-12-05
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent application CN 1284522A and Chinese patent application CN 1803874A describe the use of linseed oil and epoxy vegetable oil to manufacture modified phenolic resin as a substitute for tung oil modified phenolic resin, but do not specifically propose a technical solution for reducing the amount of phenol

Method used

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  • Preparation method of cashew nut oil modified alkyd resin
  • Preparation method of cashew nut oil modified alkyd resin
  • Preparation method of cashew nut oil modified alkyd resin

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Add 100 kg of phenol, 20 kg of cashew nut oil, and 0.2 kg of diethyl sulfate into the reactor, control the reaction temperature at 130°C, keep the temperature for 6 hours, cool down to room temperature, add triethanolamine to adjust the pH to 8.0, and obtain resin A;

[0032] 100 kg of resin A, 120 kg of 37% formaldehyde solution, and 0.5 kg of triethylamine were mixed evenly, and after reacting at 90°C for 1.5 hours, they were transferred to a vacuum distillation kettle, and reduced at a temperature of 52°C and a vacuum of -0.092MPa. Remove water by pressure distillation until the moisture content of the resin is 5%, lower to room temperature, add methanol to dissolve and adjust the solid content of the resin to 50%, and the viscosity to 70cp@25°C to obtain the cashew nut oil modified phenolic resin.

Embodiment 2

[0034] (1) Add 100 kg of phenol, 50 kg of cashew nut oil, and 0.8 kg of p-toluenesulfonic acid into the reactor, control the reaction temperature at 140°C, keep the temperature for 3 hours, cool down to room temperature, add diethanolamine to adjust the pH at 8.0, and obtain the resin A;

[0035] (2) 100 kg of resin A, 100 kg of 37% formaldehyde solution, and 0.5 kg of triethylamine are mixed evenly, and then transferred to a vacuum distillation kettle after reacting at 85°C for 2 hours. Distill under reduced pressure to remove moisture until the moisture content of the resin is 4%, lower to room temperature, add acetone to dissolve and adjust the solid content of the resin to 50%, and the viscosity to 70cp@25°C to obtain the cashew nut oil modified phenolic resin.

Embodiment 3

[0037] (1) 100 kg of phenol, 80 kg of cashew nut oil, and 1.0 kg of sulfuric acid were added to the reactor, the reaction temperature was controlled at 150° C., the reaction was kept for 4 hours, cooled to room temperature, and ammonia water was added to adjust the pH to 7.5 to obtain resin A;

[0038] (2) 100 kilograms of resin A, 240 kilograms of 20% formaldehyde solution, and 2.5 kilograms of diethylenetriamine were mixed evenly, and then transferred to a vacuum distillation kettle after reacting at 80°C for 3.5 hours. Under the condition of MPa, the moisture was distilled off under reduced pressure until the moisture content of the resin was 16%, cooled to room temperature, adding ethanol to dissolve and adjusting the solid content of the resin to 55%, and the viscosity at 180cp@25°C to obtain the cashew nut oil modified phenolic resin.

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Abstract

The present invention is process of preparing cashew nut oil modified phenolic resin. The process includes the following steps: preparing the resin A; mixing the resin A 100 weight portions, formaldehyde solution 80-280 weight portions and alkaline catalyst 0.1-5 weight portions; reaction at 70-100 deg.c for 1-5 hr; vacuum distilling in a vacuum distilling kettle at temperature of 40-80 deg.c and vacuum degree of -0.03 MPa to -0.1 MPa to dewater to water content of 0.5-20 %, cooling to room temperature, and adding solvent while stirring to regulate the solid resin content to 30-70 % and viscosity at 25 deg.c to 40-400 cp to obtain the cashew nut oil modified phenolic resin. The cashew nut oil modified phenolic resin has high heat resistance, flame resistance and high toughness, and may be applied as the base material for copper clad panel.

Description

technical field [0001] The invention relates to the modification of polymer materials, in particular to a cashew nut oil modified phenolic resin used as a base resin of a copper clad laminate and a preparation method thereof. Background technique [0002] Since the phenol nucleus of ordinary phenolic resin is formed by methylene (-CH 2 -) connection, high molecular rigidity, and high brittleness of the product. When it is applied to the manufacture of phenolic copper clad laminates, the product is brittle and hard, strong water absorption, low electrical insulation performance, etc., and it is difficult to meet the needs of operations such as punching. Therefore, the substrate resin used in the production of phenolic copper-clad laminates is mainly modified phenolic resin. Generally, dry oil is used to modify the phenolic resin. Through modification, a flexible long chain is introduced into the phenolic resin molecular chain, which improves the flexibility of the phenolic re...

Claims

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Application Information

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IPC IPC(8): C08G8/32B32B15/098
Inventor 唐路林刘耀刘为
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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