Macromonomer containing lactam structure and application thereof in preparation of polymer polyol

A technology of macromonomer and polyether polyol, which is applied in the field of polymer polyol preparation, can solve the problems of uneven appearance of polymer particles, incompatibility of performance, large usage, etc., achieve uniform appearance, reduce production and The effect of low operating cost and usage

Active Publication Date: 2019-05-17
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem of large amount of macromer stabilizer used in the preparation of polymer polyols or high viscosity in the prior art, and also solves the problems of high viscosity, poor stability, and polymer particles in the prior art. Uneven appearance or incompatibility of these properties

Method used

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  • Macromonomer containing lactam structure and application thereof in preparation of polymer polyol
  • Macromonomer containing lactam structure and application thereof in preparation of polymer polyol
  • Macromonomer containing lactam structure and application thereof in preparation of polymer polyol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050]

[0051] step 1)

[0052] In a reactor with a capacity of 1 liter and equipped with a stirrer, a heater, a thermocouple, a condensing device with a water separator, an inlet device and an outlet device, under nitrogen protection, add: 8.4 g of aziridine and 416.4 g of (0.2082mol) polyether polyol 2020 (Wanhua Chemical Group Co., Ltd., functional group degree 2, hydroxyl value 56, number average molecular weight 2000) and 200g of toluene were mixed evenly, maintained at 110°C for 4 hours, and then cooled to room temperature.

[0053] Step 2)

[0054] Add 16.8g of 3,4-dimethylfuran-2,5-dione to the reaction solution in step 1) and raise the temperature to 80°C under stirring, react for 2 hours, and obtain 1# macromonomer containing lactam structure after cooling down solution.

[0055] pass figure 1 It can be seen that the macromonomer prepared in Example 1 has the desired lactam structure.

Embodiment 2

[0057]

[0058] step 1)

[0059] In a reactor with a capacity of 1 liter and equipped with a stirrer, a heater, a thermocouple, a condensing device with a water separator, an inlet device and an outlet device, add under nitrogen protection: 8.9 g of aziridine and 416.4 g (0.2082mol) polyether polyol 2020 (Wanhua Chemical Group Co., Ltd., functional group degree 2, hydroxyl value 56, number average molecular weight 2000) and 200g of toluene, mixed evenly, maintained at 120°C for 4h, and then cooled to room temperature.

[0060] Step 2)

[0061] Add 17.73 g of maleic anhydride to the reaction liquid in step 1) and heat up to 90° C. under stirring, react for 2 hours, and obtain 2# macromonomer solution containing lactam structure after cooling down.

[0062] pass figure 2 It can be seen that the macromonomer prepared in Example 2 has the desired lactam structure.

Embodiment 3

[0064]

[0065] step 1)

[0066] In a reactor with a capacity of 1 liter and equipped with a stirrer, a heater, a thermocouple, a condensing device with a water separator, an inlet device and an outlet device, add under nitrogen protection: 9.4g aziridine and 416.4g ( 0.2082mol) polyether polyol 2020 (Wanhua Chemical Group Co., Ltd., functional group degree 2, hydroxyl value 56, number average molecular weight 2000) and 200g of toluene, after mixing evenly, maintain 130°C for 4h, and then cool to room temperature.

[0067] Step 2)

[0068] Add 18.67g of maleic anhydride to the reaction liquid in step 1) and heat up to 100°C under stirring, react for 2 hours, and obtain 3# macromonomer solution containing lactam structure after cooling down.

[0069] pass figure 2 It can be seen that the macromonomer prepared in Example 3 has the desired lactam structure.

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PUM

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Abstract

The invention relates to a preparation method of a macromonomer containing a lactam structure. The preparation method comprises the following steps: 1), aziridine is subjected to reaction with polyester polyol or polyether polyol at / in a molar ratio of 0.8:1-1.2:1 at a temperature of 100-150 DEG C; 2), the compound shown in the formula (II) is subjected to reaction with the product in the step 1)at the temperature of 60-180 DEG C, and the macromonomer containing the lactam structure is prepared. The invention also relates to the macromonomer containing the lactam structure. The macromonomer has the structure shown in the description, wherein R is a polyester chain segment or a polyether chain segment, and R1 and R2 are independently selected from H or C1-C3 alkyl. The invention also relates to an application of the macromonomer containing the lactam structure in preparation of polymer polyol. The macromonomer containing the lactam structure has the advantages of low viscosity and lowusage and is suitable for being used as a dispersion stabilizer of polymer polyol, and obtained polymer polyol has low viscosity.

Description

technical field [0001] The present invention relates to the preparation of polymer polyols. Specifically, it relates to a macromonomer with a lactam structure, a preparation method thereof, and a method for preparing polymer polyols using the macromonomer. Background technique [0002] Vinyl polymer-grafted polyether polyol, commonly known as "polymer polyol (POP)", is a polyether based on general-purpose polyether polyol, and grafts vinyl monomers to liquid polyether through free radical in-situ polymerization prepared in. Polymer polyols have a wide range of applications and are in great demand in the market. [0003] Due to the different synthesis methods, the properties of polymer polyol products are also different. Synthetic methods can generally be divided into two categories: one is the traditional in-situ polymerization method, under the action of free radicals, the hydrogen atoms of the methine groups on the polyether main chain can be transferred to form chain f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/00C08F283/06
Inventor 刘洋鞠昌迅王明永刘斌李付国吕树卫宋新星秦承群殷玲叶天
Owner WANHUA CHEM GRP CO LTD
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