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Water-boiling-resistant polyester resin and preparation method thereof

A technology of polyester resin and water boiling resistance, applied in the field of polyester resin, can solve the problems of improving the wear resistance of polyester resin, achieve excellent wear resistance and durability, reasonable process design, and suitable for large-scale industrial production

Inactive Publication Date: 2015-11-18
CHANGZHOU HUAKE POLYMERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improves its weather resistance, but does not improve the abrasion resistance of polyester resins

Method used

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  • Water-boiling-resistant polyester resin and preparation method thereof
  • Water-boiling-resistant polyester resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 400.6g of methylpropanediol, 450.7g of 1,4-butanediol and 272.8g of trimethylolpropane into a reaction kettle with a stirrer and a temperature-rising reflux device, stir and feed nitrogen, and raise the temperature to 60-80°C to The material melts to a liquid state. 456.2 g of phthalic anhydride, 734.8 g of isophthalic acid, 364.9 g of adipic acid, 170 g of UH-CARB50, and 2.5 g of monobutyltin oxide were added. Under the protection of nitrogen, the temperature is raised to effluent, the temperature of the distillation head is 90-103°C, and the temperature of the distillation head is raised to the highest reaction temperature of 220°C, the acid value of the resin is sampled and tested: 4.2mgKOH / g, when the cone-plate viscosity is 10.9P at 175°C, stop After reaction, the temperature was rapidly lowered to 90°C and the material was discharged to obtain the target water-resistant polyester resin. The alkyd feed ratio is 1.15:1.

[0020] The boiling-resistant polyester...

Embodiment 2

[0022] Add 262.5g of ethylene glycol, 507.4g of 1,6-hexanediol and 639.2g of pentaerythritol into a reaction kettle with a stirrer and a temperature-rising reflux device, stir and pass in nitrogen, and raise the temperature to 60-80°C until the material melts into a liquid state . 412 g of phthalic anhydride, 778 g of isophthalic acid, 700 g of sebacic acid, 250 g of UH-CARB90 (3 / 1) and 3.5 g of lithium hydroxide were added. Under the protection of nitrogen, the temperature is raised to effluent, the temperature of the distillation head is 90-103°C, and the temperature of the distillation head is raised to the highest reaction temperature of 230°C, the acid value of the resin is sampled and tested: 5.8mgKOH / g, when the cone-plate viscosity is 12.8P at 175°C, stop After reaction, the temperature was rapidly lowered to 90°C and the material was discharged to obtain the target water-resistant polyester resin. The alkyd feed ratio is 1.2:1.

[0023] The boiling-resistant polyest...

Embodiment 3

[0025] Add 215.9g of propylene glycol, 375.9g of neopentyl glycol and 412.8g of trimethylolethane into a reaction kettle with a stirrer and a temperature-rising reflux device, stir and feed nitrogen, and raise the temperature to 60-80°C until the material melts into liquid. Then 356.2 g of terephthalic acid, 564.4 g of isophthalic acid, 306.6 g of adipic acid, 256.3 g of UH-CARB90 (1 / 1) and 4 g of tetrabutyl titanate were added. Under the protection of nitrogen, the temperature is raised to effluent, the temperature of the distillation head is 90-103°C, and the temperature of the distillation head is raised to the highest reaction temperature of 225°C, and the acid value of the resin is sampled and tested: 3.5mgKOH / g, when the cone-plate viscosity is 10.5P at 175°C, stop After reaction, the temperature was rapidly lowered to 90°C and the material was discharged to obtain the target water-resistant polyester resin. The alkyd-acid feed ratio is 1.3:1.

[0026] The boiling-resi...

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Abstract

The invention relates to water-boiling-resistant polyester resin and a preparation method thereof. The resin is obtained by performing condensation polymerization on small-molecule dibasic acid or anhydride, small-molecule dibasic alcohol, organic polyol and polycarbonate diol in the presence of an esterification catalyst. By virtue of polymerization reaction, carbonate bonds are introduced into the structure of the water-boiling-resistant polyester resin, so that excellent wear resistance and durability are provided for a water-boiling-resistant coating, and meanwhile, the water boiling resistance of the resin is not influenced; and moreover, the raw materials adopted by the polymerization reaction are low in price and easy to obtain, the preparation method is simple and easy to operate, reasonable in process design, and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a polyester resin, in particular to a boiling-resistant polyester resin and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the requirements for the comfort of home decoration and bathroom products are getting higher and higher, so the attention and demand for boil-resistant coatings are gradually increasing. In response to this special market demand, repeated practice has proved that ordinary water-resistant polyester resins are used in related coatings, and it is found that the water-resistant performance is excellent, but the durability and wear resistance have relatively large deficiencies. [0003] Chinese patent application CN101735431 discloses a weather-resistant polyester resin with good boiling resistance and a preparation method thereof. The polyester resin is composed of polyol, aromatic polyacid, fatty polyacid, branching agent, acidolysis agent, esteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/64C08G63/78C08G63/85C08G63/83
Inventor 宋瑾张明钱永嘉
Owner CHANGZHOU HUAKE POLYMERS
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