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Polyester polyol, polyurethane foaming agent and preparation method of polyurethane foaming agent

A technology of polyurethane foaming agent and polyester polyol, which is applied in the fields of polyester polyol and polyurethane foaming agent and preparation, can solve the problems of lack of use value, waste of resources, environmental pollution, etc., and achieves low production cost and foaming. The effect of good comprehensive performance and high processing cost

Active Publication Date: 2014-10-01
HUNAN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment and utilization of domestic PTA residue is still in the research and development stage
The PTA residues of most enterprises are simply recovered from heavy metals such as cobalt and manganese, and then incinerated. This not only pollutes the environment, but also causes a great waste of resources. Organic substances such as terephthalic acid in the residues can only be used as fuel during the combustion process. , did not play its due use value

Method used

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  • Polyester polyol, polyurethane foaming agent and preparation method of polyurethane foaming agent
  • Polyester polyol, polyurethane foaming agent and preparation method of polyurethane foaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 100Kg of PTA refined slag, 60Kg of benzoic acid, 5Kg of oleic acid, 120Kg of diethylene glycol, 60Kg of glycerin and 0.3Kg of dibutyltin dilaurate into a 500-liter reactor, and slowly heat up to 180°C. When some water is distilled out, control and Slow down the heating rate to make the reaction run smoothly. Control the liquid phase temperature in the reactor at 245°C, the gas phase temperature within 100°C, keep it warm for 2 hours, and distill under reduced pressure. After the acid value of the feed liquid in the reactor drops to 3.0mgKOH / g, discharge the material when the temperature drops to 70°C to obtain the acid value It is a polyester polyol with 0.8mgKOH / g and a hydroxyl value of 400mgKOH / g.

[0027] Take 25Kg of polyester polyol, 0.5Kg of water, 0.5Kg of silicone oil, 4Kg of blowing agent 141b and 0.4Kg of catalyst N,N-dimethylcyclohexylamine, mix and stir to form white material, and then mix 30Kg of black material MDI with white material Stir, the color ...

Embodiment 2

[0029] Add 100Kg of PTA refined residue, 60Kg of benzoic acid, 4Kg of oleic acid, 60Kg of pentaerythritol, 100Kg of diethylene glycol, 30Kg of propylene glycol and 0.3Kg of dibutyltin dilaurate into a 500-liter reactor, slowly heat up to 180°C, and wait for water to distill out , control and slow down the heating rate, so that the reaction proceeds smoothly. Control the liquid phase temperature in the reactor at 250°C, the gas phase temperature within 100°C, keep it warm for 2 hours, and distill under reduced pressure. After the acid value of the feed liquid in the reactor drops to 3.0mgKOH / g, discharge the material when the temperature drops to 60°C to obtain the acid value It is 1.0mgKOH / g, a polyester polyol with a hydroxyl value of 380mgKOH / g.

[0030] Take 25Kg of polyester polyol, 0.5Kg of water, 0.5Kg of silicone oil, 4Kg of blowing agent 141b and 0.4Kg of catalyst N,N-dimethylcyclohexylamine, mix and stir to form white material, and then mix 30Kg of black material MDI ...

Embodiment 3

[0032] Add 100g of PTA refined slag, 60g of benzoic acid, 5g of oleic acid, 60g of glycerin, 60g of diethylene glycol, 60g of diethylene glycol and 0.4g of dibutyltin dilaurate into a four-necked flask, and slowly heat up to 185°C for esterification. At the beginning, when water was distilled out, control and slow down the heating rate to make the reaction proceed smoothly. Control the liquid phase temperature in the kettle between 245°C and the gas phase temperature within 100°C, keep it warm for 2 hours, and distill under reduced pressure, wait until the acid value of the feed liquid in the reactor drops to 3.0mgKOH / g, and discharge the material when the temperature drops to 70°C to obtain A polyester polyol having an acid value of 1.1 mgKOH / g and a hydroxyl value of 380 mgKOH / g.

[0033] Take 25g of polyester polyol, 0.5g of water, 0.5g of silicone oil, 4g of blowing agent 141b and 0.4g of catalyst N,N-dimethylcyclohexylamine, mix and stir to form white material, and then m...

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PUM

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Abstract

The invention discloses polyester polyol, a polyurethane foaming agent and a preparation method of the polyurethane foaming agent. An industrial residue, namely PTA waste is fully utilized, and is directly applied to preparation of polyester polyol just by simple drying treatment; the polyester polyol is further added to the formula of the foaming agent, so as to prepare the cheap polyurethane foaming agent with good foaming property. Comprehensive utilization of resources is effectively achieved, and environmental pollution is reduced; meanwhile, the polyurethane foaming agent is simple in preparation method, low in production cost, and easy for industrial production.

Description

technical field [0001] The invention relates to a polyester polyol and a polyurethane foaming agent and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Polyurethane is the abbreviation of polyurethane, which is a kind of polymer material. Polyurethane is an emerging organic polymer material, known as the "fifth largest plastic", and is widely used in many fields of the national economy because of its excellent performance. The product application fields involve light industry, chemical industry, electronics, textile, medical treatment, construction, building materials, automobile, national defense, etc. [0003] One of the most important fields of application for polyurethane products is polyurethane foam. Polyurethane rigid foam has the characteristics of good thermal insulation effect, high specific strength, electrical properties, chemical resistance and sound insulation effect. [0004] A large amount of PTA was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G18/42C08J9/14
Inventor 李昶红赵红亮李薇王诚
Owner HUNAN INST OF TECH