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Halogen-containing aromatic polycarbonate polyol as well as preparation method and application thereof

A polycarbonate and aromatic technology, which is applied in the field of organic synthesis, can solve problems such as it is difficult to meet the use requirements of materials, and achieve the effects of good physical properties and dimensional stability, simple synthesis process, and improved heat resistance.

Active Publication Date: 2014-05-21
WANHUA CHEM NINGBO RONGWEI POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the continuous expansion of the application field of polyurethane foam, people's requirements for its flame retardant performance are also getting higher and higher. It is difficult for any single flame retardant method to meet the requirements of the material.

Method used

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  • Halogen-containing aromatic polycarbonate polyol as well as preparation method and application thereof
  • Halogen-containing aromatic polycarbonate polyol as well as preparation method and application thereof
  • Halogen-containing aromatic polycarbonate polyol as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Weigh 544g of tetrabromobisphenol A and 880g of ethylene carbonate and add them to a four-necked flask equipped with a magnetic stirrer, condenser and thermometer, add 8.7g of potassium hydroxide under stirring, replace the air in the system with nitrogen, and then heat up to 140°C, heat preservation reaction for 14 hours, after the reaction was completed, the unreacted ethylene carbonate was removed by distillation under reduced pressure to obtain 1210 g of the light yellow target product, the yield was 85%, the hydroxyl value of the product was 88 mgKOH / g, and the carbonate group in the product The content of the product is 18.8%, and the product is confirmed as tetrabromobisphenol A polycarbonate polyol by nuclear magnetic spectrum.

Embodiment 2

[0039] Weigh 544g of tetrabromobisphenol A and 704g of ethylene carbonate and add them to a four-necked flask equipped with a magnetic stirrer, condenser and thermometer, add 1.7g of potassium hydroxide under stirring, replace the air in the system with nitrogen, and then heat up to 200°C, heat preservation reaction for 4 hours, after the completion of the reaction, distill under reduced pressure to remove unreacted ethylene carbonate to obtain 1035.8 g of the light yellow target product, the yield is 83%, the hydroxyl value of the product is 100 mgKOH / g, and the carbonate in the product The base content is 16.4%, and the product is confirmed as tetrabromobisphenol A polycarbonate polyol by nuclear magnetic spectrum.

Embodiment 3

[0041] Weigh 544g of tetrabromobisphenol A and 528g of ethylene carbonate and add them to a four-necked flask equipped with a magnetic stirrer, condenser and thermometer, add 5.5g of potassium bicarbonate under stirring, replace the air in the system with nitrogen, and then heat up to 170°C, heat preservation reaction for 8 hours, after the reaction was completed, the unreacted ethylene carbonate was distilled off under reduced pressure to obtain 921.9 g of the light yellow target product, the yield was 86%, the hydroxyl value of the product was 120 mgKOH / g, and the carbonate in the product was The content of base is 13.5%, and product can be confirmed as tetrabromobisphenol A polycarbonate polyol (see figure 1 ).

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Abstract

The invention provides halogen-containing aromatic polycarbonate polyol as well as a preparation method and application thereof. The structural formula of the halogen-containing aromatic polycarbonate polyol is described in the specification, wherein R1 or R2 represents H or methyl, X represents Cl or Br or H, at least one X represents Cl or Br, m, n, p and q are positive integers of not less than 1, and the sum of the m, the n, the p and the q is not more than 20. The halogen-containing aromatic polycarbonate polyol is prepared from a halogen-containing aromatic diphenol compound through a cyclic carbonate reaction, and the total yield is more than 80 percent. A polyurethane material prepared by using the polyol as the main raw material has the advantages of excellent heat stability, fire resistance and better mechanical property.

Description

technical field [0001] The invention relates to a polyol which can be used for flame retardancy of polyurethane materials and its preparation method and use, more specifically relates to a halogen-containing aromatic polycarbonate polyol and its preparation method and use, belonging to the field of organic synthesis. Background technique [0002] Polyurethane rigid foam is a polymer material with superior performance. It has the advantages of good thermal insulation effect, high mechanical strength, good electrical performance, chemical corrosion resistance and sound insulation effect. It is widely used in many industries. [0003] Specifically in the field of building insulation, due to the low thermal conductivity of polyurethane rigid foam, aging resistance, good chemical stability, moisture-proof and waterproof, temperature-resistant and non-melting, and good bonding performance with the building base, it is considered to be the best thermal insulation material in compre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G64/10C08G64/30C08G18/44C08G18/32C08G101/00
Inventor 鞠昌迅陈海波董龙跃郭克银华卫琦隋宝华李晶
Owner WANHUA CHEM NINGBO RONGWEI POLYURETHANE
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