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Thermosetting phenolic resin and production method thereof

A phenolic resin and thermosetting technology, which is applied in the field of phenolic resin and its production, can solve the problems of difficult sewage treatment, high COD value, and large amount of production process wastewater, so as to avoid production process wastewater, improve conversion rate, and improve yield. rate effect

Inactive Publication Date: 2014-03-19
JIANGSU JIUDING NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing defects in the phenolic resin and its production process in the market are: the production process has a large amount of wastewater, and the COD value is very high, the sewage is difficult to treat, and it is difficult to discharge the sewage in general treatment; the yield is relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The formula of a kind of phenolic resin is shown in the table Unit:㎏

[0017] raw material name phenol Paraformaldehyde barium hydroxide Proportion 450±1 205±1 4.5±0.1

[0018] Accurately weigh phenol, paraformaldehyde and barium hydroxide according to the ratio, add them into the reaction kettle while stirring, and make detailed records.

[0019] First open the vent valve on the top of the horizontal condenser, then open the cooling water of the condenser, reverse

[0020] The jacket of the reactor should be heated with steam to raise the temperature; and then enter the heating reaction stage.

[0021] In the heating reaction stage, the temperature before heating does not exceed 40°C. When the temperature rises to 80°C, the reactor starts to become transparent, and the heat preservation reaction starts at about 95°C. The entire heating process is controlled at 60±5min, and stirring is continued.

[0022] When rising to 95 ℃, heat preser...

Embodiment 2

[0027] The formula of a kind of phenolic resin is shown in the table Unit:㎏

[0028] raw material name phenol Paraformaldehyde barium hydroxide Proportion 450±1 210±1 4.5±0.1

[0029] Accurately weigh phenol, paraformaldehyde and barium hydroxide according to the ratio, add them into the reaction kettle while stirring, and make detailed records.

[0030] First open the vent valve on the top of the horizontal condenser, then open the cooling water of the condenser, reverse

[0031] The jacket of the reactor should be heated with steam to raise the temperature; and then enter the heating reaction stage.

[0032] In the heating reaction stage, the temperature before the reaction does not exceed 40°C. When the temperature rises to 80°C, the reactor starts to become transparent, and the heat preservation reaction starts at about 95°C. The entire heating process is controlled at 60±5min, and the stirring is continued.

[0033] When rising to 95 ℃, he...

Embodiment 3

[0038] The formula of a kind of phenolic resin is shown in the table Unit:㎏

[0039] raw material name phenol Paraformaldehyde barium hydroxide Proportion 450±1 200±1 4.8±0.1

[0040] Accurately weigh phenol, paraformaldehyde and barium hydroxide according to the ratio, add them into the reaction kettle, and make detailed records.

[0041] Open the vent valve at the top of the horizontal condenser first, and control the condensing water pressure of the condenser between 0.3 and 0.4 MPa. After confirmation, turn on the temperature rise switch to feed steam into the reactor jacket, and then enter the temperature rise reaction stage.

[0042] The initial temperature in the heating reaction stage does not exceed 40°C, and the temperature rises to 80°C for reaction

[0043] The inside of the kettle began to become transparent, and the heat preservation reaction began at around 95°C. The entire heating process was controlled at 60±5min, and kept stirr...

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PUM

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Abstract

The invention discloses a thermosetting phenolic resin and a production method thereof. The production method comprises the following steps: adding phenol, paraformaldehyde and barium hydroxide into a reaction kettle according to a ratio, hydrolyzing paraformaldehyde, and carrying out a condensation polymerization reaction to prepare the thermosetting phenolic resin. The phenolic resin is a yellow-to-reddish brown liquid, and has a viscosity of 800S or less, a free phenol content of 16% or less and a solid content of 72% or more. The method has the advantages of avoiding of the generation of wastewater, increase of the product yield, increase of the raw material conversion rate, and substantial reduction of the emission of wastes.

Description

technical field [0001] The invention relates to a phenolic resin and a production method thereof. Background technique [0002] The defects in the existing market phenolic resin and its production process are: the production process has a large amount of wastewater, and the COD value is very high, the sewage is difficult to treat, and it is difficult to meet the standard discharge in general treatment; the yield is relatively low. Contents of the invention [0003] The object of the present invention is to provide a kind of thermosetting phenolic resin and production method thereof. [0004] In order to solve the above technical problems, a thermosetting phenolic resin and its production method of the present invention, the thermosetting phenolic resin is composed of the following substances: phenol: 66.5-68.5%, paraformaldehyde: 30.5-32.5%, barium hydroxide: 0.5% -0.8%; The characteristics of the phenolic resin are as follows: appearance index: yellow to redd...

Claims

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Application Information

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IPC IPC(8): C08G8/10C08G8/04
Inventor 曹正兵徐峰严程荣顾清波
Owner JIANGSU JIUDING NEW MATERIAL CO LTD