Polyglycerol polyether natural oil polyol and preparation method thereof, and polyurethane elastomer and preparation method thereof

A natural oil polyol, polyurethane elastomer technology, applied in the field of flexible polyurethane elastomer, can solve the problems of adjusting product functionality and performance, not using natural oil, not using cost savings, etc., to protect wrist, optimize cost and elasticity The performance and hardness of the body remain unchanged

Active Publication Date: 2017-07-14
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CN102858846A discloses a polyether polyol synthesized using polyglycerol as an initiator, and adjusts the functionality of the polyether polyol by controlling the degree of polymerization of polyglycerol. Although it uses polyglycerol as an initiator, it does not introduce natural Oil groups improve product properties such as hardness
[0008] US6710096 discloses the use of a high functionality first initiator and a low functionality second initiator to adjust the final polyether polyol functionality, but does not take advantage of the potential cost savings of using natural oils to adjust product functionality and performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Take 678g of hexapolyglycerol, add 2g of KOH, raise the temperature to 110°C, dehydrate at a relative pressure of -0.095MPa until the moisture is lower than 0.05wt%, slowly add 1020g of propylene oxide dropwise, mature for two hours, vacuumize, and add vegetable oleic acid formazan 1088g of ester was reacted for 2h under the relative pressure of -0.09~-0.095MPa to obtain a prepolymer with an average functionality of 5~6.

[0075] Take 250g of prepolymer, add 13g of KOH, heat up to 110°C, dehydrate under relative pressure -0.095MPa until the water content is less than 0.05wt%, slowly add 3210g of propylene oxide dropwise, and mature for 2 hours after the addition, the product is refined to obtain the hydroxyl value 30.1mgKOH / g, 1# polyglycerol polyether natural oil polyol with a viscosity of 950mPa·s, wherein the natural oil content is 2.4wt%, and the average functionality is 5-6.

[0076] Take 250g of prepolymer, add 13g of KOH, heat up to 110°C, dehydrate under relativ...

Embodiment 2

[0079] Take 678g of hexapolyglycerol, add 2g of KOH, raise the temperature to 110°C, dehydrate at a relative pressure of -0.095MPa until the moisture is lower than 0.05wt%, slowly add 1020g of propylene oxide dropwise, mature for two hours, vacuumize, and add vegetable oleic acid formazan 1392 g of ester was reacted for 2 hours under a relative pressure of -0.09 to -0.095 MPa to obtain a prepolymer with an average functionality of 4 to 5.

[0080] Take 250g of prepolymer, add 13g of KOH, heat up to 110°C, dehydrate under relative pressure -0.095MPa until the water content is less than 0.05wt%, slowly add 2369g of propylene oxide dropwise, and mature for 2 hours after the addition, the product is refined to obtain the hydroxyl value 29.8mgKOH / g, 4# polyglycerol polyether natural oil polyol with a viscosity of 850mPa·s, wherein the natural oil content is 4.3wt%, and the average functionality is 4-5.

Embodiment 3

[0082] Take 600g of triglycerin, add 3g of KOH, heat up to 110°C, dehydrate under relative pressure -0.095MPa until the water content is lower than 0.05wt%, slowly add 725g of propylene oxide dropwise, mature for two hours, vacuumize, add vegetable oleic acid formazan 740 g of the ester was reacted for 2 hours at a relative pressure of -0.09 to -0.095 MPa to obtain a prepolymer with an average functionality of 4 to 5.

[0083] Take 250g of prepolymer, add 13g of KOH, heat up to 110°C, dehydrate under relative pressure -0.095MPa until the water content is less than 0.05wt%, slowly add 2267g of propylene oxide dropwise, and mature for 2 hours after the addition, the product is refined to obtain the hydroxyl value 30.9mgKOH / g, 5# polyglycerol polyether natural oil polyol with a viscosity of 850mPa·s, wherein the natural oil content is 3.6wt%, and the average functionality is 4-5.

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Abstract

The present invention provides a polyglycerol polyether natural oil polyol and a preparation method thereof, a method for preparing a flexible polyurethane elastomer by using the polyol, and an elastomer prepared through the method. According to the present invention, natural oil and/or a natural oil derivative reacts with alkoxylated polyglycerol to adjust the functionality of the alkoxylated polyglycerol, and the high equivalent weight polyglycerol polyether natural oil polyol is prepared by using the alkoxylated polyglycerol as the starting agent; the polyglycerol polyether natural oil polyols with different hydroxyl values, different functionalities, different viscosities and different reaction activities can be obtained; the polyurethane elastomer is prepared by using the two-component system, such that the processing temperature is low, the operation is easy, and the production efficiency is high; and the prepared elastomer has characteristics of high softness, good elasticity and good stability, and has the SHORE OO hardness of 0-25.

Description

technical field [0001] The invention relates to a polyglycerol polyether natural oil polyol and a preparation method thereof, and also relates to a method for preparing a flexible polyurethane elastomer using the polyglycerol polyether natural oil polyol and the prepared flexible polyurethane elastomer. Background technique [0002] The rapid development of petrochemical industry and the manufacture of biodiesel has led to a large supply of glycerin, which will lead to a gradual reduction in the price of glycerin. A possible application of glycerol is to synthesize polyglycerol with a degree of polymerization of 2-16 (or more), and its average functionality can reach 4-18 (or more), which can be used as a starter for polyether polyols. The presence of ether bonds in the polyglycerol molecule makes the molecule flexible and has good solubility in polar solvents. It is one of the raw materials for preparing high-quality products. [0003] Polyglycerol circulating in the marke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/26C08G65/28C08G18/48C08G18/10
CPCC08G18/10C08G18/48C08G18/4804C08G65/2609C08G65/2615C08G2110/0008
Inventor 蔡仲铭吕乐曲永静沈周峰
Owner WANHUA CHEM GRP CO LTD
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