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Reaction type flame-retardant polyester polyol and preparation method thereof

A technology of polyester polyol and reactive flame retardant, which is applied in the field of preparation of reactive flame retardant polyester polyol, can solve the problems of large specific surface area and low density, and achieve good strength, little impact on performance, and long-term maintenance The effect of flame retardancy

Inactive Publication Date: 2017-05-10
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane foam has a small density and a large specific surface area, and it is easier to burn than non-foam materials. Combustion and decomposition produce a lot of toxic fumes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 45 parts of tetrachlorophthalic anhydride, 30 parts of diethylene glycol, 15 parts of glycerin, 0.003 parts of antioxidant 1010, and 0.005 parts of n-butyl titanate into the reaction kettle by weight, and protect it with nitrogen gas. Water starts to flow out at 145°C, control the temperature of the reflux tower to 95°C, then slowly increase the temperature of the kettle to 155°C, keep the temperature constant for 2 hours, and then gradually increase the temperature to 230°C in 6 hours, when the water discharge is complete, Keep warm for 1 hour, start vacuuming gradually, and start sampling to measure the acid value and hydroxyl value after 3 hours. When the acid value is less than 2.0 (mgKOH / g) and the hydroxyl value reaches 200 mgKOH / g, stop vacuuming and start cooling. When the temperature reaches Add 5 parts of phosphite at 100°C, stir for 30 minutes and then re-sample for measurement. After all the indicators are up to the standard, start discharging, and the fl...

Embodiment 2

[0025] Add 50 parts of tetrachlorophthalic anhydride, 34 parts of butanediol, 10 parts of trimethylolpropane, 0.004 parts of antioxidant 1010, and 0.006 parts of n-butyl titanate into the reaction kettle by weight, and protect it with nitrogen gas. When the temperature rises to 135°C, water begins to flow out, and the temperature of the reflux tower is controlled to be 101°C, then the temperature of the kettle is slowly raised to 160°C, and the temperature is kept constant for 3 hours, and then the temperature is raised to 230°C in 6.5 hours in a gradual manner. After effluent is completed, keep warm for 1 hour, and start vacuuming gradually. After 3 hours, start sampling to measure the acid value and hydroxyl value. When the acid value is less than 2.0 (mgKOH / g) and the hydroxyl value reaches 200 (mgKOH / g), stop vacuuming. Start to cool down. When the temperature reaches 100°C, add 6 parts of ethyl triphosphate, stir for 30 minutes and then re-sample for measurement. After all...

Embodiment 3

[0027] Add 48 parts of tetrachlorophthalic anhydride, 33 parts of neopentyl glycol, 11 parts of glycerin, 1010 0.005 parts of antioxidants, and 0.007 parts of n-butyl titanate into the reaction kettle for heating, and protect it with nitrogen gas. Water starts to flow out at 140°C, control the temperature of the reflux tower to 105°C, then slowly increase the temperature of the kettle to 165°C, keep the temperature constant for 2 hours, and then gradually increase the temperature to 220°C in 7 hours, when the water discharge is complete, Keep warm for 1.2 hours, start vacuuming gradually, and start sampling to measure the acid value and hydroxyl value after 3 hours. When the acid value is less than 2.0 (mgKOH / g) and the hydroxyl value reaches 200 (mgKOH / g), stop vacuuming and start cooling. When the temperature reaches 100°C, add 8 parts of ethyl triphosphate, stir for 30 minutes, re-sample and measure, and start discharging after all the indicators are up to standard, and the ...

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Abstract

The invention relates to a method for preparing a reaction type flame-retardant polyester polyol. The reaction type flame-retardant polyester polyol comprises the following raw materials in parts by mass: 45-50 parts of tetrachlorophthalic anhydride, 40-45 parts of polyhydric alcohols, 5-10 parts of a phosphorus-containing flame retardant, 0.003-0.005 part of an antioxidant and 0.005-0.01 part of a catalyst. The method for preparing the reaction type flame-retardant polyester polyol disclosed by the invention overcomes the defects of additive flame-retardant polyesters, has the characteristics of environment friendliness, high efficiency, low toxicity and long-lasting effect, and plays a more and more important role in flame retardancy study of the polyurethane. The polyester polyol prepared by the method has a phosphorus-halogen compound flame-retardant effect, so the polyester polyol has excellent and long-lasting flame-retardant property. Moreover, due to high degree of functionality, the prepared hard bubble has excellent strength and can be widely applied to hard bubbles of spray and piping.

Description

technical field [0001] The invention belongs to the field of preparation methods of chemical products, and in particular relates to a preparation method of reactive flame-retardant polyester polyols. Background technique [0002] Polyurethane is a kind of high polymer containing carbamate group (-NHCOO-) in its molecular chain. With the different raw materials, additives and process conditions during synthesis, products with different properties can be synthesized, such as foam plastics, rubber, coatings, adhesives, elastic fibers, etc. Polyurethane foam is currently the best thermal insulation material in the world. Because developed countries such as Europe and the United States pay high attention to building energy conservation, in these countries, polyurethane rigid foam has been widely used in roofs, walls, ceilings, floors, doors and windows etc. However, polyurethane foam has a small density and a large specific surface area. Compared with non-foam materials, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/20C08G18/46C08K5/134C08K5/524C08K5/521C08G101/00
CPCC08G63/20C08G18/4607C08G2101/00C08K5/1345C08K5/521C08K5/524
Inventor 李健刘兆阳董良张宾
Owner SHANDONG INOV POLYURETHANE
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