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Preparation method for plant phenol polyether polyol

A technology of phenolic polyether and polyol, which is applied in the field of preparation of polyether polyol, and can solve problems such as refreshing records

Active Publication Date: 2015-04-01
常熟耐素生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to its many advantages, polyurethane has developed extremely rapidly. As an important component of polyurethane, polyether polyol has also been developed. Many of them are prepared by reacting polyols or organic amines with propylene oxide and ethylene oxide as initiators. Polyether polyols have been well developed, but traditional polyether polyols are basically derived from petrochemical derivatives and their reactions. With the increasing demand for non-renewable resources such as petroleum and The resource itself is depleted, and the price of oil continues to set new records

Method used

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  • Preparation method for plant phenol polyether polyol
  • Preparation method for plant phenol polyether polyol
  • Preparation method for plant phenol polyether polyol

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Embodiment Construction

[0027] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0028] 1. Add 100-150 kg of 50%-99% cardanol and 45-106 kg of diethanolamine or a mixture of diethanolamine and monoethanolamine to the heat-preserving and pressurized reactor, purging with nitrogen, sealing, heating and stirring until 85- 145°C.

[0029] 2. Add 10-30 kg of 55% (weight) formaldehyde solution dropwise into the reaction kettle through a pressurized tank. The feeding speed is subject to the temperature of the reaction kettle being controlled at 85 to 145°C. The entire feeding process takes 10-150 minutes , after the feeding is completed, continue to keep warm for half an hour to 3 hours, and the temperature is controlled at 120-145°C.

[0030] 3. Vacuum at 102-123°C, reduce the moisture to 0.30% to 0.50% by ...

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Abstract

The invention relates to a preparation method for a plant phenol polyether polyol. The method comprises the following steps of: performing mannich reaction on plant phenol, low-grade aldehyde and alkali amine to obtain plant phenol aminal; and performing oxyalkylation addition reaction on the plant phenol aminal and alkylene oxide under the action of a catalyst, and vacuumizing the final product to obtain the polyether polyol based on the plant phenol aminal.

Description

technical field [0001] The invention relates to a preparation method of polyether polyol, in particular to a preparation method of plant phenol polyether polyol. Background technique [0002] Due to its many advantages, polyurethane has developed extremely rapidly. As an important component of polyurethane, polyether polyol has also been developed. Many of them are prepared by reacting polyols or organic amines with propylene oxide and ethylene oxide as initiators. Polyether polyols have been well developed, but traditional polyether polyols are basically derived from petrochemical derivatives and their reactions. With the increasing demand for non-renewable resources such as petroleum and The resource itself is depleted, and the price of oil continues to set new records. At the same time, as people's awareness of renewable resources gradually increases, some vegetable oils derived from natural sources are more and more paid attention to as substitutes for petroleum derivat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28C08G18/50C09D175/08
Inventor 邵新明
Owner 常熟耐素生物材料科技有限公司