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Synthetic method of unsaturated polyester resin for producing agglomerated stones

A polyester resin and a technology for producing granite, which is applied in the field of producing unsaturated polyester resin for granite, can solve problems such as waste of resources, and achieve the effects of cost saving, cost reduction, excellent mechanical properties and chemical corrosion resistance.

Inactive Publication Date: 2014-07-30
WUQIAO HAOTONG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the development of granite is of great significance to the rational use of stone resources. Although my country's natural stone resources are very rich, the current waste is astonishing. The rate of finished products is only about 30%, and the rest becomes a large amount of crushed stone. Stones are disposed of, resulting in a great waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] With a 1000m1 four-necked ground flask reaction kettle, a thermometer, a stirrer, a nitrogen inlet pipe and a fractionation device were respectively installed, and 370g of polyester bottle flakes, 250g of diethylene glycol and 0.6g of zinc acetate catalyst were successively put in. Slowly raise the temperature, turn on the cold water when the distillation head reaches 80°C, and start stirring when the kettle temperature reaches 210°C. Continue to heat up to 230°C, control the temperature of the distillation head below 106°C, and keep warm for 3 hours. After the acid value is qualified, start to cool down to 130° C., and put in the second-step material: 240 g of fumaric acid and 0.15 g of triphenyl ester, and 0.05 g of hydroquinone. Then gradually heat up under the situation of feeding nitrogen, and the temperature of the distillation head is controlled below 105°C. When the temperature of the kettle reaches 208-210°C, start the heat preservation reaction, control the a...

Embodiment 2

[0019] The reaction device is the same as Example 1. Put 370g of polyester bottle flakes, 225g of diethylene glycol and 0.6g of zinc acetate catalyst into the reaction kettle, raise the temperature below 230°C and keep it warm for reaction. After reaching the target, cool down to 140°C and put in the second-step materials 190g of maleic anhydride and triphenyl ester 0.15g, 0.05g of hydroquinone, and the acid value at the end of the reaction is controlled at 20-22mgKOH / g. Cool down to 170°C and add 0.05g of hydroquinone and 0.25g of paraffin. Cool down to 150°C and add 440g of styrene to dilute, then add 0.05g of copper naphthenate and stir well. All the other steps are operated in the same steps as in Example 1.

Embodiment 3

[0021] The reaction device is the same as Example 1. Put 340g of polyester bottle flakes, 205g of diethylene glycol, 0.5g of zinc acetate and 0.35g of dicyclohexylamine into the reaction kettle as a catalyst, raise the temperature below 230°C and keep it warm for 4 hours. 207.5 g of butenedioic anhydride, 39 g of propylene glycol, 10 g of adipic acid, 0.2 g of triphenyl ester, and 0.05 g of hydroquinone. Heat to 206°C and keep warm to react until the acid value is below 60mgKOH / g and vacuumize. After vacuuming, the acid value is 20-22mgKOH / g, and the temperature is lowered to 170°C, and 0.05g of hydroquinone and 0.25g of paraffin are added. Cool down to 130°C and add 420g of styrene to dilute, then add 0.05g of copper naphthenate and stir well. All the other steps are operated in the same steps as in Example 1.

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PUM

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Abstract

The invention discloses a synthetic method of unsaturated polyester resin for producing agglomerated stones. The synthetic method comprises the following steps: (1) putting PET (polyethylene terephthalate) flakes, dihydric alcohol and binary acid or polybasic acid in a reaction kettle, adding a reaction accelerating agent to the reaction kettle, slowly heating, and when the acid value is in the range from 4 to 6, cooling; (2) cooling, adding the dihydric alcohol and unsaturated binary acid to the reaction kettle, and slowly heating till the acid value reaches below 30mgKOH / g; (3) vacuumizing till the acid value is reduced to 20-22mgKOH / g, cooling to 170 DEG C and adding a polymerization inhibitor; (4) cooling, and adding styrene; and (5) cooling, adding an additive, pumping the styrene into a dilution kettle, adding a proper amount of copper naphthenate, pressing polyester into the dilution kettle, ending material pressing, cooling, filtering and packaging. According to the synthetic method, the PET flakes are used for synthesizing the unsaturated polyester resin for producing the agglomerated stones; the cost can be saved; the quality is improved; the utilization rate of resources is increased; and environments are improved.

Description

technical field [0001] The invention belongs to the field of chemical product processing, and in particular relates to a method for producing unsaturated polyester resin for granite. Background technique [0002] Artificial granite is made of natural marble chips and stone powder as the main raw material, with organic resin as the cement, made into square materials by vacuum stirring and high-pressure vibration, and then cured at room temperature (curing time is more than 7 days), sawing and grinding , polishing and other processes to make plates. Granite is an internationally popular green and environmentally friendly decorative material. It is very popular. For large-scale buildings, designers like to use granite. The demand is increasing year by year, and the prospect is broad. In addition, the development of granite is of great significance to the rational use of stone resources. Although my country's natural stone resources are very rich, the current waste is astonishi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/676C08F283/01
Inventor 刘冬霞武广文吴凤煊
Owner WUQIAO HAOTONG RESIN
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