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Air-dried unsaturated polyester resin and production method thereof

A technology of polyester resin and production method, which is applied in the field of air-drying unsaturated polyester resin and its production, can solve the problems of poor air-drying property, less paraffin consumption, and difficulty in controlling, and achieve convenient grinding and polishing, and improve air-drying Sexuality, the effect of increasing transparency

Inactive Publication Date: 2014-06-04
ZHANGZHOU YABANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The existing air-drying resin adjusts the air-drying property by adjusting the amount of paraffin, but the amount of paraffin used is small, and the air-drying property is poor; the amount of paraffin used is large, and the transparency of the cured product is not good, which is difficult to control
[0007] 2. The existing air-drying resin used as PE paint has high hardness and is difficult to polish
[0008] 3. The existing air-drying resin has a short storage time, and the general shelf life is only 6 months (below 25°C, keep away from light and seal)

Method used

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  • Air-dried unsaturated polyester resin and production method thereof
  • Air-dried unsaturated polyester resin and production method thereof
  • Air-dried unsaturated polyester resin and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 Take the production of air-drying unsaturated polyester resin with 3600 liters of reactor as an example

[0035] raw material

[0036] Reaction feed A

[0037]

[0038] Cooling, dilution step feeding B

[0039]

[0040] production steps

[0041] 1. Check equipment, pipelines, electrical appliances, instruments, and check the type and quantity of raw materials.

[0042] 2. Put the reaction materials A into the reaction kettle: glycol, dibasic acid (anhydride), triphenyl phosphite and QS-20, etc. Heat up, 10 degrees / hour, stir after 0.5 hours, when the material heats up When the temperature reaches 120°C, start the reaction stirrer and supply 4M nitrogen 3 / h and continue to heat up the reaction.

[0043] 3. When the temperature of the distillation head rises to 98-100°C, the vertical condenser is supplied with water, the temperature of the distillation head is controlled at 100-102°C, and the reaction is kept for 1 hour after the water is discharg...

Embodiment 2

[0061] Embodiment 2 Take the production of air-drying unsaturated polyester resin with 3600 liters of reactor as an example

[0062] raw material

[0063] Reaction feed A

[0064]

[0065] Cooling, dilution step feeding B

[0066]

[0067] production steps

[0068]1. Check equipment, pipelines, electrical appliances, instruments, and check the type and quantity of raw materials.

[0069] 2. Put the reaction materials A into the reaction kettle: glycol, dibasic acid (anhydride), triphenyl phosphite and QS-20, etc. Heat up, stir after 0.5 hours, 10 degrees / hour, when the material heats up When the temperature reaches 120°C, start the reaction stirrer and supply 4M nitrogen 3 / h and continue to heat up the reaction.

[0070] 3. When the temperature of the distillation head rises to 98-100°C, the vertical condenser is supplied with water, the temperature of the distillation head is controlled at 100-102°C, and the reaction is kept for 1 hour after the water is discharge...

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Abstract

The invention discloses an air-dried unsaturated polyester resin and a production method thereof. The air-dried unsaturated polyester resin comprises the following raw materials by weight: 200-220 parts of dimer acid; 1200-1300 parts of tetrahydrophthalic anhydride; 700-750 parts of maleic anhydride; 1150-1200 parts of propylene glycol; 280-300 parts of neopentyl glycol; 1.150-1.25 parts of triphenyl phosphite; 0.5-0.6 part of a polymerization inhibitor QS-20; 1400-1500 parts of styrene; 0.5-1.5 parts of an antifoaming agent BYK-A555 and 0.4-0.6 part of a leveling agent BYK-307. The invention also discloses the production method of the resin.

Description

technical field [0001] The invention relates to a production method of polyester resin, in particular to a method of air-drying unsaturated polyester resin. Background technique [0002] Unsaturated polyester resin is the most commonly used type of thermosetting resin. It is generally a polycondensation of unsaturated dibasic acid diol or saturated dibasic acid unsaturated diol. It has ester bonds and unsaturated double bonds. type polymer compound. Usually, the polyester polycondensation reaction is carried out at 190-220°C until the desired acid value (or viscosity) is reached. After the polyester polycondensation reaction is completed, a certain amount of vinyl monomer is added while it is hot to form a viscous Such a polymer solution is called an unsaturated polyester resin. [0003] According to the structure of unsaturated polyester resin, it can be divided into ophthalmic type, m-benzene type, p-phenylene type, bisphenol A type, vinyl ester type, etc.; according to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08G63/52C08G63/78
Inventor 蒋静史益文侯辉
Owner ZHANGZHOU YABANG CHEM
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