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High-flame-retardant polyester polyol compatible with cyclopentane and preparation method of high-flame-retardant polyester polyol

A polyester polyol, high flame-retardant technology, applied in the field of polyester polyol, can solve the problems of poor mutual solubility and high polyester viscosity, and achieve the effect of less reaction steps, good flexibility and low viscosity

Inactive Publication Date: 2020-04-10
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aromatic polyester polyols used for polyurethane rigid foams have poor miscibility with pentane series, and the viscosity of polyester itself is relatively high.

Method used

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  • High-flame-retardant polyester polyol compatible with cyclopentane and preparation method of high-flame-retardant polyester polyol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In a 2000mL reaction flask equipped with nitrogen protection, condensing reflux and stirrer, add 600.00g, 4.05mol phthalic anhydride, 150.00g, 0.90mol terephthalic acid, 100g, 0.68mol adipic acid, 737.38g, 9.69mol of 1,2-propanediol, 216.7g, 1.62mol of trimethylolpropane, start stirring, turn on nitrogen, heat up to 200°C for esterification and dehydration reaction, then heat up to 235°C for ester exchange reaction, reaction time For 2 hours, add 317.92g and 0.49mol of palm oil, and then carry out polycondensation reaction. After the material is clarified, check the acid value and hydroxyl value every 50 minutes. , 0.64mol of DMMP and stir evenly, and pack the material out.

[0031] The polyester polyol synthesized by the present embodiment has a hydroxyl value of 300mgKOH / g and an acid value of 1.55mgKOH / g;

[0032] The polyester polyol number-average molecular weight that the present embodiment synthesizes is 400.0;

[0033] The yield of polyester polyol synthesized...

Embodiment 2

[0035] In a 2000mL reaction flask equipped with nitrogen protection, condensing reflux and stirrer, add 600.00g, 4.05mol phthalic anhydride and 150.00g, 0.90mol terephthalic acid, 100g, 0.68mol adipic acid, 665.31g, 8.74mol of 1,2-propanediol, 195.53g, 1.46mol of trimethylolpropane, start stirring, turn on nitrogen, raise the temperature to 200°C for esterification and dehydration reaction, then raise the temperature to 235°C for ester exchange and polycondensation reaction, Check the acid value and hydroxyl value every 50 minutes. After the acid value and hydroxyl value are qualified, lower the temperature to below 90°C, add 75.38g and 0.61mol of DMMP, stir evenly, and pack it out.

[0036] The polyester polyol synthesized by the present embodiment has a hydroxyl value of 300mgKOH / g and an acid value of 1.27mgKOH / g;

[0037] The polyester polyol number-average molecular weight that the present embodiment synthesizes is 400.0;

[0038] The yield of polyester polyol synthesize...

Embodiment 3

[0040] In a 2000mL reaction flask equipped with nitrogen protection, condensing reflux and stirrer, add 650.00g, 4.05mol of phthalic anhydride, 150.00g, 0.90mol of terephthalic acid, 647.96g, 8.52mol of 1,2-propanediol , 190.43g, 1.42mol of trimethylolpropane, start stirring, turn on nitrogen, raise the temperature to 200°C, carry out the esterification dehydration reaction, then raise the temperature to 235°C, carry out the transesterification reaction, the reaction time is 2h, add 279.96g, 0.43mol palm oil, and then carry out polycondensation reaction. After the material is clarified, check the acid value and hydroxyl value every 50 minutes. After the acid value and hydroxyl value are qualified, cool down to below 90°C, add 69.99g, 0.56mol of DMMP and stir Evenly, out of the packaging.

[0041] The polyester polyol synthesized by the present embodiment has a hydroxyl value of 300mgKOH / g and an acid value of 1.52mgKOH / g;

[0042] The polyester polyol number average molecular...

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Abstract

The invention relates to high-flame-retardant polyester polyol compatible with cyclopentane and a preparation method of the high-flame-retardant polyester polyol, and belongs to the technical field ofpolyester polyol. The preparation method comprises the following steps: carrying out esterification reaction and transesterification reaction on a mixture of adipic acid, an aromatic dibasic acid andan aromatic dibasic acid anhydride and a mixture of a dihydric alcohol and a trihydric alcohol which are used as raw materials, adding vegetable oil to carry out polycondensation reaction, and addinga flame retardant to obtain the high-flame-retardancy polyester polyol compatible with cyclopentane. The high-flame-retardant polyester polyol compatible with cyclopentane, disclosed by the invention, not only can be mutually dissolved with cyclopentane, but also has relatively low viscosity, good flexibility and high operability; the invention also provides the preparation method which is simpleand feasible and is beneficial to industrial production.

Description

technical field [0001] The invention relates to a highly flame-retardant polyester polyol compatible with cyclopentane and a preparation method thereof, belonging to the technical field of polyester polyols. Background technique [0002] Polyurethane rigid foam is a foam material made of polyol and isocyanate as raw materials, which are polymerized under the action of curing agent, catalyst, foam stabilizer, and foaming agent. It has light density, small thermal conductivity, water resistance and With the advantages of good aging resistance and high mechanical properties, it is a kind of insulation material widely used in refrigerators, freezers and other fields. [0003] Because the flame retardancy of aromatic polyester polyol is higher than that of ordinary polyether polyol and aliphatic polyester polyol, it is widely used in polyurethane rigid foam. Aromatic polyester polyols are generally prepared by polycondensation reaction of phthalic anhydride, isophthalic acid or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/49C08G63/20C08K5/5333
CPCC08G63/20C08G63/48C08K5/5333
Inventor 代金辉张永张宾张兴华
Owner SHANDONG INOV POLYURETHANE
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