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Preparation method and application of functional dihydric alcohol

A dihydric alcohol and functional technology, applied in the fields of polymer chemistry, building insulation materials, and reactive flame retardants, can solve the problems that the flame retardant ability cannot meet the use requirements, etc., and achieve easy operation, low acid value, and mild conditions Effect

Inactive Publication Date: 2015-12-23
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The flame retardant ability of polyurethane foam insulation materials prepared by a single flame retardant element often cannot meet the requirements of use. Therefore, research and development of reactive flame retardants with synergistic flame retardant effects and industrial application value are important for flame retardant polyurethane technology. development is of great significance

Method used

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  • Preparation method and application of functional dihydric alcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 A kind of preparation method of functional dihydric alcohol

[0047] Add 110g of diethanolamine to the reactor, start stirring, add 30g of paraformaldehyde, heat up to 55-60°C and react for 1h; add 166g of triethyl phosphite in 5min, and continue to keep warm for 1.5h; add 150g of tetrabromophthalic anhydride, Heat preservation reaction for 0.5h; add 200g of epichlorohydrin and 3.5g of catalyst tetraethylammonium bromide, raise the temperature to 125°C, react for 1h, cool, and discharge to obtain functional diol.

[0048] The functional diol is a reddish-brown transparent liquid with an acid value of 1.1 mgKOH / g and a viscosity of 5208 mPa.s.

Embodiment 2

[0049] Embodiment 2 A kind of preparation method of functional dihydric alcohol

[0050]Add 110g of diethanolamine to the reactor, start stirring, add 30g of paraformaldehyde, heat up to 55-60°C and react for 1h; add 166g of triethyl phosphite in 10min, and continue to keep warm for 1.5h; add 180g of tetrabromophthalic anhydride, Heat preservation reaction for 0.5h; add 150g of propylene oxide and 2.7g of catalyst benzyltriethylammonium chloride, raise the temperature to 115°C, react for 1.5h, cool, and discharge to obtain functional diol.

[0051] The functional diol is a reddish-brown transparent liquid with an acid value of 1.3 mgKOH / g and a viscosity of 4263 mPa.s.

Embodiment 3

[0052] Embodiment 3 A kind of preparation method of functional dihydric alcohol

[0053] Add 110g of diethanolamine to the reactor, start stirring, add 30g of paraformaldehyde, heat up to 55-60°C and react for 1h; add 166g of triethyl phosphite in 7min, and continue to keep warm for 1.5h; add 170g of tetrabromophthalic anhydride, Heat preservation reaction for 0.5h; add 170g of epichlorohydrin and 3.0g of catalyst benzyltrimethylammonium chloride, raise the temperature to 115°C, react for 1.5h, cool, and discharge to obtain functional diol.

[0054] The functional diol is a reddish-brown transparent liquid with an acid value of 1.2 mgKOH / g and a viscosity of 5640 mPa.s.

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Abstract

The invention discloses a preparation method and an application of functional dihydric alcohol, which belong to the technical field of macro-molecular chemistry, a reaction-type flame retardant and a construction heat preservation material. The functional dihydric alcohol is prepared by virtue of the catalytic reaction of diethanol amine, paraformaldehyde, triethyl phosphate, tetrabromophthalic anhydride and alkylene oxide. The prepared functional dihydric alcohol is used for preparing a flame-retardant polyurethane foam material.

Description

technical field [0001] The invention relates to a preparation method and application of a functional diol, in particular to a method for preparing a phosphorus-bromine synergistic flame-retardant diol for preparing flame-retardant polyurethane foam, which belongs to polymer chemistry and reactive flame-retardant agents, building insulation materials technology. Background technique [0002] Polyurethane foam is a low-density microporous polymer material produced by the reaction of polyester or polyether polyols with isocyanate. Because the material has good insulation, low thermal conductivity, good mechanical strength, electrical properties, shock and noise resistance, Comprehensive properties such as wear resistance and corrosion resistance have been widely used in many technical fields. Among all kinds of polyurethane products, the output of rigid polyurethane foam ranks second. The polyester or polyether polyol used in the preparation of rigid polyurethane foam, the cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G18/50C08G18/76C08G18/18C08G101/00
Inventor 王刚王志玲刘志连崔玉郑鲁沂杨小风
Owner UNIV OF JINAN
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