Foaming agent based on cyclohexanone by-product spent lye as well as preparation method and application of foaming agent

A technology of foaming agent and cyclohexanone, which is applied to the foaming agent based on cyclohexanone by-product waste lye and its preparation method and application field, which can solve the problems of wide foaming temperature range and poor foaming effect , to achieve a good foaming effect and realize the effect of resource reuse

Active Publication Date: 2021-03-05
SINOPEC NANJING RES INST OF CHEM IND CO LTD +2
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Sodium bicarbonate is a chemical foaming agent that is harmless to the environment. It can decompose and release carbon dioxide gas at 80-180°C to achieve foaming effect, but the foaming temperature range is wide, the foaming effect is not good, and its foaming performance Curve Reference Attached figure 1

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
  • Foaming agent based on cyclohexanone by-product spent lye as well as preparation method and application of foaming agent
  • Foaming agent based on cyclohexanone by-product spent lye as well as preparation method and application of foaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The raw material cyclohexanone waste lye contains 60% by weight of water, a total of 20% by mass of sodium carbonate and sodium hydroxide, and the rest of the components are sodium adipate, sodium valerate, cyclohexanone, and cyclohexanol .

[0030] Heat 20L of cyclohexanone waste lye in a reaction kettle to 80°C, stir for 4 hours until there is no peculiar smell, and the tail gas is adsorbed and purified by an adsorption device. Then pass the treated cyclohexanone waste lye into the reaction kettle to bubble and stir with carbon dioxide, maintain the pressure at 2MPa, the reaction temperature at 25°C, and the reaction time for 4h to prepare a foaming agent.

[0031] The prepared foaming agent product had a pH value of 8, a viscosity of 100 centipoise, and a mass ratio of foaming volume of 30%.

[0032] The foaming agent of the present invention is mixed with a polymerization catalyst, a flame retardant, a foam stabilizer, and a polyol ether to form a foaming compositi...

Embodiment 2

[0034] The raw material cyclohexanone waste lye contains 30% by weight of water, contains 40% by mass of sodium carbonate and sodium hydroxide, and the rest of the components are sodium adipate, sodium valerate, cyclohexanone, and cyclohexanol .

[0035] Heat 50L of cyclohexanone waste lye in a reactor to 120°C, stir for 4 hours until there is no peculiar smell, and the tail gas is absorbed and purified by an adsorption device. Then pass the treated cyclohexanone waste lye into the reactor to bubble and stir with carbon dioxide, maintain the pressure at 1 MPa, the reaction temperature at 40°C, and the reaction time for 8 hours to prepare a foaming agent.

[0036] The prepared foaming agent product had a pH value of 9, a viscosity of 400 centipoise, and a foaming volume mass ratio of 50%.

[0037] The foaming agent of the present invention is mixed with a polymerization catalyst, a flame retardant, a foam stabilizer, and a polyol to form a foaming composition, which is added t...

Embodiment 3

[0039] The raw material cyclohexanone waste lye contains 50% by weight of water, a total of 30% by mass of sodium carbonate and sodium hydroxide, and the rest of the components are sodium adipate, sodium valerate, cyclohexanone, and cyclohexanol .

[0040] Heat 20L cyclohexanone waste lye in a reaction kettle to 100°C, stir for 6 hours until there is no peculiar smell, and the tail gas is absorbed and purified by an adsorption device. Then pass the treated spent cyclohexanone lye into the reactor to bubble and stir with carbon dioxide, maintain the pressure at 0.1 MPa, react at a temperature of 35° C., and react for 6 hours to prepare a blowing agent.

[0041] The prepared foaming agent product had a pH value of 8, a viscosity of 200 centipoise, and a foaming volume mass ratio of 40%.

[0042] The foaming agent of the present invention is mixed with a polymerization catalyst, a flame retardant, a foam stabilizer and a polyol ether to form a foaming composition, which is added...

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 provides a foaming agent as well as a preparation method and an application method thereof. The foaming agent provided by the invention is prepared from a raw material: waste alkali liquor of a cyclohexane oxidation to cyclohexanone process. According to the preparation method of the foaming agent, the cyclohexanone waste alkali liquor can be effectively recycled, resource reutilization is achieved, the prepared foaming agent has a good foaming effect, and the closed-cell rate is larger than 95%.

Description

technical field [0001] The invention provides a preparation method of a foaming agent and an application method thereof. The raw material for the preparation of the foaming agent is waste lye obtained by oxidizing cyclohexanone to cyclohexanone. [0002] The preparation method of the foaming agent provided by the invention can effectively recycle the waste cyclohexanone lye, realize resource reuse, and has good foaming effect. Background technique [0003] Cyclohexanone is the basic raw material for the production of caprolactam and an important organic chemical raw material. In the production process of producing cyclohexanone by cyclohexane oxidation method, about 0.7 tons of waste lye will be produced for every ton of cyclohexanone produced. [0004] Spent lye is a brown viscous liquid with a pungent odor. Its composition varies with the cyclohexane oxidation process. The main components are sodium carbonate, sodium hydroxide, organic salt and water, and the COD concentr...

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 Applications(China)
IPC IPC(8): C08J9/08C08L75/04C08L27/06C08L25/06
CPCC08J9/08C08J2203/02C08J2375/04C08J2327/06C08J2325/06
Inventor 季峰崎黄伟金汉强杨忠林何志勇赵思远
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap