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Synthesis method of flame-retardant polyester ether polyol

A technology of polyester ether polyol and polyester polyol, applied in the field of chemical synthesis, can solve the problem of low price, and achieve the effects of low price, good flame retardancy and high system compatibility

Inactive Publication Date: 2020-04-03
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a method for synthesizing flame-retardant polyester ether polyols, and to introduce polyhydroxyl rings into polyester ether molecules with the help of the structural properties of polyester polyols. The polymer-shaped macromolecular structure and nitrogen element are used to increase the average functionality of the product and the content of flame-retardant elements. The prepared polyester ether overcomes the shortcomings of single polyester or polyether, and has low price, good flame retardancy and system compatibility. high advantage

Method used

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  • Synthesis method of flame-retardant polyester ether polyol
  • Synthesis method of flame-retardant polyester ether polyol

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Add 500g of tetrachlorophthalic anhydride polyester polyol and 150g of hexamethylol melamine into the reactor in turn, after nitrogen replacement, raise the temperature of the reactor to 70°C, then add 80g of propylene oxide, react at this temperature for 1h, negative Inject 15g of trimethylamine catalyst under pressure (-0.05MPa), raise the temperature to 120°C, slowly pass in 310g of propylene oxide, maintain the pressure at 0.15MPa during this period, continue to react at this temperature and pressure for 3 hours, and then refine the product to obtain tetrachlorophthalic anhydride Flame-retardant polyester ether polyol, the performance index is shown in Table 1.

Embodiment 2

[0027] Add 500g of tetrachlorophthalic anhydride polyester polyol and 200g of hydroxyethylhexahydro-s-triazine to the reactor in turn, after nitrogen replacement, raise the temperature of the reactor to 90°C, then add 70g of ethylene oxide, at this temperature React for 2 hours, draw 12g of dimethylamine catalyst under negative pressure (-0.09MPa), raise the temperature to 110°C, slowly feed 350g of ethylene oxide, maintain the pressure at 0.15MPa during this period, continue to react at this temperature and pressure for 4 hours, and then refine it That is to obtain the product tetrachlorophthalic anhydride flame-retardant polyester ether polyol, the performance index is shown in Table 1.

Embodiment 3

[0029] Add 400g of tetrabromophthalic anhydride polyester polyol and 150g of 2,3,6,7,10,11-hexahydroxytriphenylenebenzene into the reaction kettle in sequence, after nitrogen replacement, raise the temperature of the reaction kettle to 80°C, and then add 80g propylene oxide, reacted at this temperature for 2h, sucked in 11g triethylamine catalyst under negative pressure (0.02MPa), raised the temperature to 130°C, and slowly introduced 310g propylene oxide, during which the pressure was maintained at 0.2MPa, at this temperature and pressure Continue the reaction for 3.5 hours, and then refine the product to obtain the tetrabromophthalic anhydride flame-retardant polyester ether polyol. The performance indicators are shown in Table 1.

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Abstract

The invention belongs to the technical field of chemical synthesis, and particularly relates to a synthesis method of flame-retardant polyester ether polyol. The preparation method comprises the following steps: adding phthalic anhydride polyester polyol and a polyhydroxy aniline compound into a reaction kettle, stirring and heating for pre-reaction; and after the pressure in the kettle is negative pressure, pumping an amine catalyst, controlling the temperature and the pressure, adding alkylene oxide, carrying out polymerization reaction, and carrying out refining treatment to obtain the flame-retardant polyester ether polyol product. By means of the structural performance of polyester polyol, a polyhydroxy cyclic macromolecular structure and a nitrogen element are introduced into polyester ether molecules to improve the average functionality of a product and the content of flame-retardant elements, and the prepared polyester ether overcomes the defects of single polyester or polyether and has the advantages of low price, good flame retardance and high system compatibility.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a method for synthesizing flame-retardant polyester ether polyols. Background technique [0002] Polyurethane foam is an important heat insulation, heat preservation and shockproof material, widely used in household, construction, daily necessities, transportation, home appliances and other fields. One polyether polyol has the advantages of good stability against hydrolysis and good compatibility with other components in the foaming system, but its price is relatively high, while the price of another raw material polyester polyol is relatively low, and it is prepared from The rigid foam has high strength, fine cells, and low thermal conductivity, but its compatibility with other components is poor, and the resulting foam has poor hydrolytic stability. [0003] At the same time, polyurethane foam is a flammable organic polymer material with a porous structu...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G65/26C08G18/50C08G101/00
CPCC08G18/5066C08G65/2612C08G65/263C08G2110/0025
Inventor 程铸洪姜男郭怀泉高伟伟李晓芳孙露霞
Owner SHANDONG INOV NEW MATERIALS CO LTD
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