Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Macromonomer containing lactam structure and its use in preparing polymer polyol

A technology of macromonomer and polyester polyol, which is applied to macromonomer with lactam structure and its preparation, and the field of preparing polymer polyol, can solve the problem of uneven appearance of polymer particles, incompatibility in performance, use of Large quantity and other problems, to achieve the effect of uniform appearance, lower production and operating costs, and low usage

Active Publication Date: 2021-02-02
WANHUA CHEM GRP CO LTD
View PDF9 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Macromonomer containing lactam structure and its use in preparing polymer polyol
  • Macromonomer containing lactam structure and its use in preparing polymer polyol
  • Macromonomer containing lactam structure and its use in preparing 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of a macromonomer containing a lactam structure, comprising the following steps: 1) aziridine and polyester polyol or polyether polyol in a molar ratio of 0.8:1 to 1.2:1 at temperature Reaction at 100-150° C.; 2) Reacting the compound of formula (II) with the product in step 1) at a temperature of 60-180° C. to prepare the macromonomer containing a lactam structure. The present invention further relates to a macromonomer containing a lactam structure, which has the following structure: wherein, R is a polyester segment or a polyether segment; R 1 and R 2 independently selected from H or an alkyl group with 1-3 carbon atoms. The invention also relates to the application of the macromonomer containing lactam structure in the preparation of polymer polyol. The macromonomer containing a lactam structure in the present invention has the advantages of low viscosity and low usage amount, and is suitable as a dispersion stabilizer for polymer polyols, and the obtained polymer polyols have 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com