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D-33 diol monomer and preparation method thereof

A technology of diol monomer and reaction kettle, which is applied in the field of D-33 diol monomer and its preparation, can solve the problems of low purity of D-33 diol monomer, complicated preparation process, and low production efficiency, and achieve the goal of preparing The effect of simple process, high purity and high production efficiency

Pending Publication Date: 2022-04-26
JINAN LVZHOU COMPOSITE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of the traditional D-33 diol monomer is complex, the production efficiency is low, and the produced D-33 diol monomer has low purity and poor quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A D-33 diol monomer, comprising the following raw materials in parts by weight: 28 parts of bisphenol A, 19 parts of propylene oxide, 0.4 parts of sodium hydroxide, 0.4 parts of phosphoric acid and 7 parts of water.

[0026] A preparation method of D-33 diol monomer, comprising the following steps:

[0027] Step 1: Pour sodium hydroxide into the semi-sealed feeding tank, suck it into the reactor through the pipeline, and then add water into the reactor;

[0028] Step 2: Add bisphenol A into the reaction kettle through the feeding tank;

[0029] Step 3: Add propylene oxide from the feed port of the reactor;

[0030] Step 4: Warm up the reactor to 40°C while stirring to mix the raw materials evenly;

[0031] Step 5: Heating the reactor to 60°C and keeping it warm for 6 hours;

[0032] Step 6: Heating the reactor to 80°C and keeping it warm for 4 hours;

[0033] Step 7: Use a vertical condenser to cool down the reaction kettle, and take samples to measure the hydroxyl ...

Embodiment 2

[0037] A D-33 diol monomer, comprising the following raw materials in parts by weight: 30 parts of bisphenol A, 20 parts of propylene oxide, 0.42 parts of sodium hydroxide, 0.42 parts of phosphoric acid and 7.25 parts of water.

[0038] A preparation method of D-33 diol monomer, comprising the following steps:

[0039] Step 1: Pour sodium hydroxide into the semi-sealed feeding tank, suck it into the reactor through the pipeline, and then add water into the reactor;

[0040] Step 2: Add bisphenol A into the reaction kettle through the feeding tank;

[0041] Step 3: Add propylene oxide from the feed port of the reactor;

[0042] Step 4: Warm up the reactor to 40°C while stirring to mix the raw materials evenly;

[0043] Step 5: Heating the reactor to 60°C and keeping it warm for 6 hours;

[0044] Step 6: Heating the reactor to 80°C and keeping it warm for 4 hours;

[0045] Step 7: Use a vertical condenser to cool down the reaction kettle, and take samples to measure the hydr...

Embodiment 3

[0049] A D-33 diol monomer, comprising the following raw materials in parts by weight: 33 parts of bisphenol A, 21 parts of propylene oxide, 0.5 parts of sodium hydroxide, 0.48 parts of phosphoric acid and 8 parts of water.

[0050] A preparation method of D-33 diol monomer, comprising the following steps:

[0051] Step 1: Pour sodium hydroxide into the semi-sealed feeding tank, suck it into the reactor through the pipeline, and then add water into the reactor;

[0052] Step 2: Add bisphenol A into the reaction kettle through the feeding tank;

[0053] Step 3: Add propylene oxide from the feed port of the reactor;

[0054] Step 4: Warm up the reaction kettle to 40°C while stirring to mix the raw materials evenly;

[0055] Step 5: Heating the reactor to 60°C and keeping it warm for 6 hours;

[0056] Step 6: Heating the reactor to 80°C and keeping it warm for 4 hours;

[0057] Step 7: Use a vertical condenser to cool down the reaction kettle, and take samples to measure the ...

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PUM

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Abstract

The invention relates to the field of chemical material preparation, in particular to a D-33 diol monomer and a preparation method thereof. The D-33 diol monomer is prepared from the following raw materials in parts by weight: 28 to 33 parts of bisphenol A, 19 to 22 parts of epoxypropane, 0.4 to 0.5 part of sodium hydroxide, 0.4 to 0.5 part of phosphoric acid and 7 to 8 parts of water. The D-33 diol monomer prepared by the preparation method of the D-33 diol monomer, which is disclosed by the invention, is high in purity and good in quality by selecting proper raw materials and a reasonable proportion, and meanwhile, the preparation process is simple and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of chemical material preparation, in particular to a D-33 diol monomer and a preparation method thereof. Background technique [0002] D-33 diol monomer, chemical name: 4·4-(B-B'-dihydroxydipropoxyphenyl) 2·2-propane. Molecular formula: C12H28O4, molecular weight: 344.43, light yellow transparent viscous liquid, hydroxyl value 6-9. Good thermal stability, not easy to decompose, non-toxic, non-corrosive, it is the main raw material for the synthesis of chemical corrosion resistant polyester resin, especially the indispensable raw material for the manufacture of alkaline corrosion resistant polyester resin. The preparation process of the traditional D-33 diol monomer is complex, the production efficiency is low, and the produced D-33 diol monomer has low purity and poor quality. Contents of the invention [0003] The invention provides a D-33 diol monomer and a preparation method thereof. [0004] A D-33 diol monom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/23C07C41/02
CPCC07C43/23
Inventor 刘桂普刘硕张伟李成涛魏祥王风德
Owner JINAN LVZHOU COMPOSITE MATERIALS CO LTD
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