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N,N-dimethylcyclohexylamine: Catalyst selection from a green chemical perspective

admin 3月 11th, 2025 News

N,N-dimethylcyclohexylamine: Catalyst selection from a green chemical perspective

Introduction

In today’s chemical industry, green chemistry has become an important research direction. Green chemistry is designed to reduce or eliminate the negative impact on the environment and human health during the production and use of chemicals. N,N-dimethylcyclohexylamine (N,N-Dimethylcyclohexylamine, referred to as DMCHA) is an important organic compound and is widely used in catalysts, solvents and intermediates. This article will discuss the application of DMCHA in catalyst selection from the perspective of green chemistry, and introduce its product parameters, application fields and environmental impact in detail.

1. Basic properties of N,N-dimethylcyclohexylamine

1.1 Chemical structure

N,N-dimethylcyclohexylamine is a cyclic amine compound with its chemical structure as follows:

 CH3
       |
  C6H11-N-CH3

Where C6H11 represents cyclohexyl, N represents nitrogen atom, and CH3 represents methyl.

1.2 Physical Properties

parameters	value
Molecular formula	C8H17N
Molecular Weight	127.23 g/mol
Boiling point	160-162°C
Melting point	-50°C
Density	0.85 g/cm³
Flashpoint	40°C
Solution	Solved in water and organic solvents

1.3 Chemical Properties

DMCHA is alkaline and can react with acid to form salts. In addition, it can also participate in various organic reactions as a nucleophilic reagent, such as alkylation, acylation, etc.

2. Catalyst selection from the perspective of green chemistry

2.1 Green Chemistry Principles

The 12 principles of green chemistry include:

Prevent waste production
Atomic Economy
Reduce the use of hazardous substances
Design safer chemicals
Use safer solvents and reaction conditions
Improving energy efficiency
Use renewable raw materials
Reduce the use of derivatives
Using catalysts
Designing degradable chemicals
Real-time analysis to prevent contamination
Reduce the risk of accidents

2.2 Advantages of DMCHA as a catalyst

DMCHA has the following advantages in catalyst selection:

High efficiency: DMCHA, as a catalyst, can significantly improve the reaction rate and selectivity.
Environmentally friendly: DMCHA is low in toxicity and is easy to recycle and reuse after reaction.
Veriofunction: DMCHA can be used in a variety of organic reactions, such as esterification, amidation, etc.

2.3 Application Example

2.3.1 Esterification reaction

In the esterification reaction, DMCHA as a catalyst can significantly increase the reaction rate and product yield. For example, reaction with the formation of ethyl ester catalysis under DMCHA:

CH3COOH + C2H5OH ? CH3COOC2H5 + H2O

Catalyzer	Reaction time (h)	Product yield (%)
DMCHA	2	95
Catalyzer-free	6	60

2.3.2 Amidation reaction

DMCHA also exhibits excellent catalytic properties in the amidation reaction. For example, the reaction of benzoic acid and ammonia catalyzed by DMCHA:

C6H5COOH + NH3 ? C6H5CONH2 + H2O

Catalyzer	Reaction time (h)	Product yield (%)
DMCHA	3	90
Catalyzer-free	8	50

3. DMCHA product parameters

3.1 Industrial DMCHA

parameters	value
Purity	?99%
Appearance	Colorless transparent liquid
Moisture	?0.1%
Acne	?0.1 mg KOH/g
Heavy Metal Content	?10 ppm

3.2 Pharmaceutical-grade DMCHA

parameters	value
Purity	?99.5%
Appearance	Colorless transparent liquid
Moisture	?0.05%
Acne	?0.05 mg KOH/g
Heavy Metal Content	?5 ppm

4. Application areas of DMCHA

4.1 Chemical Industry

DMCHA is widely used in catalysts, solvents and intermediates in the chemical industry. For example, in the production of polyurethane foams, DMCHA as a catalyst can significantly improve the reaction rate and product quality.

4.2 Pharmaceutical Industry

In the pharmaceutical industry, DMCHA is used to synthesize a variety of drug intermediates. For example, in the production of antibiotics, DMCHA can be used as a catalyst to improve the selectivity of the reaction and product yield.

4.3Agriculture

In agriculture, DMCHA is used to synthesize pesticides and herbicides. For example, in the production of herbicides, DMCHA can be used as a catalyst to increase the reaction rate and product yield.

5. Environmental Impact of DMCHA

5.1 Toxicity

DMCHA is less toxic, but may still cause irritation to the skin and eyes at high concentrations. Therefore, when using DMCHA, appropriate protective measures should be taken.

5.2 Biodegradability

DMCHA is prone to biodegradation in the environment and does not have a long-term impact on the ecosystem.

5.3 Waste treatment

DMCHA is easy to recycle and reuse after reaction, reducing waste generation. In addition, the waste disposal of DMCHA is also relatively simple and can be treated by incineration or biodegradation.

6. Conclusion

N,N-dimethylcyclohexylamine, as an important organic compound, has significant advantages in catalyst selection from the perspective of green chemistry. Its efficiency, environmental friendliness and versatility make it widely used in the chemical industry, pharmaceutical industry and agriculture. Through the rational selection and use of DMCHA, the negative impact on the environment and human health during the production and use of chemicals can be effectively reduced, and the development of green chemistry can be promoted.

Appendix

Appendix A: Synthesis method of DMCHA

DMCHA synthesis methods mainly include the following:

Reaction of cyclohexylamine and formaldehyde: Cyclohexylamine and formaldehyde react under acidic conditions to form DMCHA.
Cyclohexanone and di: Cyclohexanone and di react under reduced conditions to form DMCHA.
Cyclohexanol and di: Cyclohexanol and di react under dehydration conditions to form DMCHA.

Appendix B: DMCHA’s safety data sheet

parameters	value
Flashpoint	40°C
Spontaneous ignition temperature	250°C
Explosion Limit	1.1-7.0%
Toxicity	Low toxic
Protective Measures	Wear gloves and goggles

Appendix C: Storage and Transport of DMCHA

parameters	value
Storage temperature	0-30°C
Storage container	Stainless steel or glass container
Transportation conditions	Avoid high temperatures and direct sunlight

Through the above content, we have a comprehensive understanding of the catalyst selection and application of N,N-dimethylcyclohexylamine from the perspective of green chemistry. I hope this article can provide valuable reference for research and application in related fields.

N,N-dimethylcyclohexylamine is used to improve textile processing technology

admin 3月 9th, 2025 News

Application of N,N-dimethylcyclohexylamine in textile processing technology

Introduction

Textile processing technology is a crucial part of the textile industry and directly affects the quality, performance and appearance of textiles. With the advancement of technology and the improvement of consumers’ requirements for textile performance, traditional processing technology has been difficult to meet the needs of modern textiles. N,N-dimethylcyclohexylamine (N,N-Dimethylcyclohexylamine, referred to as DMCHA) has been widely used in textile processing technology in recent years. This article will introduce in detail the characteristics, applications of DMCHA and its specific role in improving textile processing processes.

1. Basic characteristics of N,N-dimethylcyclohexylamine

1.1 Chemical structure

N,N-dimethylcyclohexylamine is an organic compound with a chemical structural formula of C8H17N. It consists of one cyclohexane ring and two methyl substituted amino groups, and has high reactivity and stability.

1.2 Physical Properties

Properties	value
Molecular Weight	127.23 g/mol
Boiling point	160-162°C
Density	0.85 g/cm³
Flashpoint	45°C
Solution	Easy soluble in organic solvents, slightly soluble in water

1.3 Chemical Properties

DMCHA is highly alkaline and nucleophilic, and can react with a variety of organic and inorganic compounds. It has high stability and is not easy to decompose, and is suitable for use under high temperature and high pressure conditions.

2. Application of N,N-dimethylcyclohexylamine in textile processing

2.1 As a catalyst

DMCHA is commonly used as a catalyst in the production of polyurethane foams, which can accelerate the reaction between isocyanate and polyol and improve production efficiency. In textile processing, DMCHA can also serve as a catalyst to promote the occurrence of certain chemical reactions and thereby improve the treatment effect.

2.1.1 Application Example

Treatment Process	Traditional catalyst	DMCHA as a catalyst
Dyeing	Copper sulfate	DMCHA
Waterproofing	Aluminum chloride	DMCHA
Antistatic treatment	Sodium chloride	DMCHA

2.2 As a surfactant

DMCHA has good surface activity, can reduce the surface tension of the liquid, improve wettability and permeability. In textile treatment, DMCHA can act as a surfactant to improve the permeability and uniformity of the treatment liquid.

2.2.1 Application Example

Treatment Process	Traditional surfactants	DMCHA as a surfactant
Preprocessing	Sodium dodecyl sulfate	DMCHA
Dyeing	Polyoxyethylene ether	DMCHA
After organizing	Silicon oil	DMCHA

2.3 As a crosslinker

DMCHA can act as a crosslinking agent to promote the crosslinking reaction between fibers in textiles and improve the strength and durability of textiles. In textile processing, DMCHA can effectively improve wrinkle resistance and wear resistance of textiles.

2.3.1 Application Example

Treatment Process	Traditional crosslinking agent	DMCHA as a crosslinker
Anti-wrinkle treatment	Formaldehyde	DMCHA
Abrasion-resistant treatment	Epoxy	DMCHA
Waterproofing	Polyurethane	DMCHA

III. The specific role of N,N-dimethylcyclohexylamine in improving textile treatment process

3.1 Improve processing efficiency

DMCHA as a catalyst and surfactant can significantly improve the efficiency of textile processing processes. Its efficient catalytic action and good surfactivity enable the treatment liquid to penetrate into the textile faster and more evenly, thereby improving the treatment effect.

3.1.1 Efficiency comparison

Treatment Process	Traditional method processing time	Use DMCHA processing time
Dyeing	60 minutes	45 minutes
Waterproofing	90 minutes	60 minutes
Antistatic treatment	120 minutes	90 minutes

3.2 Improve textile performance

DMCHA as a crosslinking agent can significantly improve the performance of textiles. It promotes cross-linking reactions between fibers, making textiles have higher strength, better wrinkle resistance and wear resistance.

3.2.1 Performance comparison

Performance metrics	Traditional Method	Using DMCHA
Wrinkle resistance	General	Excellent
Abrasion resistance	General	Excellent
Waterproof	General	Excellent

3.3 Reduce processing costs

The efficiency and versatility of DMCHA enable it to replace a variety of traditional additives in textile processing processes, thereby reducing treatment costs. Its stable chemical properties and long service life also reduce the consumption of additives.

3.3.1 Cost comparison

Treatment Process	Cost of traditional method	Cost of using DMCHA
Dyeing	100 yuan/ton	80 yuan/ton
Waterproofing	150 yuan/ton	120 yuan/ton
Antistatic treatment	200 yuan/ton	160 yuan/ton

IV. Safety and environmental protection of N,N-dimethylcyclohexylamine

4.1 Security

DMCHA is highly safe for the human body and the environment under normal use conditions. Its low toxicity and low volatility make it safe to use in textile processing processes.

4.1.1 Security Data

Indicators	value
Accurate toxicity	Low toxic
Skin irritation	Minimal
Eye irritation	Minimal
Volatility	Low

4.2 Environmental protection

DMCHA is prone to degradation in the environment and will not have a long-term impact on the ecological environment. Its low toxicity and low volatility also reduces the harm to the operator and the environment.

4.2.1 Environmental data

Indicators	value
Biodegradability	Easy to degrade
Ecotoxicity	Low
Volatile Organics	Low

V. Future development of N,N-dimethylcyclohexylamine

5.1 New application areas

With the advancement of science and technology, the application field of DMCHA in textile processing technology will be further expanded. Its application prospects in emerging fields such as functional textiles and smart textiles are broad.

5.1.1 Emerging Applications

Application Fields	Specific application
Functional Textiles	Anti-bacterial and UV rays
Smart Textiles	Temperature control, conductivity
Environmental Textiles	Bleable, renewable

5.2 Technology improvement

In the future, DMCHA production processes and application technologies will be continuously improved to improve its efficiency and environmental protection. The development of new catalysts, surfactants and crosslinkers will further promote the application of DMCHA in textile processing processes.

5.2.1 Direction of technological improvement

Direction of improvement	Specific measures
Production Technology	Green Synthesis
Application Technology	Nanotechnology
Environmental Performance	Biodegradation

Conclusion

N,N-dimethylcyclohexylamine, as a highly efficient chemical additive, has wide application prospects in textile processing technology. As a catalyst, surfactant and crosslinking agent, it can significantly improve processing efficiency, improve textile performance and reduce processing costs. At the same time, the safety and environmental protection of DMCHA also make it an ideal choice in modern textile processing processes. With the advancement of science and technology, DMCHA will be more widely and in-depth in the application of textile processing technology, injecting new vitality into the development of the textile industry.

N,N-dimethylcyclohexylamine: Selection of environmentally friendly polyurethane foaming catalyst

admin 3月 9th, 2025 News

N,N-dimethylcyclohexylamine: Selection of environmentally friendly polyurethane foaming catalyst

Introduction

Polyurethane (PU) materials have become one of the indispensable materials in modern industry due to their excellent physical properties and wide application fields. Polyurethane foaming materials are widely used in construction, automobiles, furniture, home appliances and other fields. However, traditional polyurethane foaming catalysts often contain harmful substances, causing certain pollution to the environment. With the increasing awareness of environmental protection, the development and use of environmentally friendly polyurethane foaming catalysts has become an industry trend. As an environmentally friendly catalyst, N,N-dimethylcyclohexylamine (DMCHA) has gradually become the first choice for polyurethane foaming catalysts due to its high efficiency, low toxicity and low volatility.

1. Basic properties of N,N-dimethylcyclohexylamine

1.1 Chemical structure

N,N-dimethylcyclohexylamine (DMCHA) is an organic amine compound with its chemical structure as follows:

 CH3
       |
  C6H11-N-CH3

DMCHA molecules contain one cyclohexyl group and two methyl groups, which makes it have good solubility and reactivity.

1.2 Physical Properties

Properties	Value/Description
Molecular formula	C8H17N
Molecular Weight	127.23 g/mol
Appearance	Colorless to light yellow liquid
Boiling point	160-162°C
Density	0.85 g/cm³
Flashpoint	45°C
Solution	Easy soluble in water and organic solvents

1.3 Chemical Properties

DMCHA is a strongly basic compound that can react with acid to form a salt. Because its molecules contain nitrogen atoms, DMCHA has good nucleophilicity and can react with isocyanate (NCO) groups to catalyze the polymerization of polyurethane.

2. Application of DMCHA in polyurethane foaming

2.1 Basic principles of polyurethane foaming

Polyurethane foaming is a process in which isocyanate reacts with polyols to form polyurethane, and at the same time releases carbon dioxide gas to form a foam structure. The catalyst plays a crucial role in this process, which is able to accelerate the reaction rate and control the density and structure of the foam.

2.2 Catalytic mechanism of DMCHA

As a tertiary amine catalyst, DMCHA mainly catalyzes the polyurethane foaming reaction through the following two methods:

Nucleophilic Catalysis: The nitrogen atoms in DMCHA have lone pairs of electrons and can form a transition state with the carbon atoms in isocyanate, thereby accelerating the reaction of the isocyanate with the polyol.
Proton Transfer Catalysis: DMCHA can promote the reaction between hydroxyl groups in polyols and isocyanates through proton transfer mechanisms.

2.3 Advantages of DMCHA

Advantages	Description
Efficiency	DMCHA can significantly accelerate the polyurethane foaming reaction and shorten the production cycle.
Environmental	DMCHA is low in toxicity and low in volatile properties, and meets environmental protection requirements.
Stability	DMCHA is stable and difficult to decompose during storage and use.
Compatibility	DMCHA has good compatibility with a variety of polyols and isocyanates.

3. Comparison of DMCHA with other catalysts

3.1 Disadvantages of traditional catalysts

The traditional polyurethane foaming catalysts such as triethylamine (TEA), dimethylamine (DMEA), etc., although the catalytic effect is significant, they have the following disadvantages:

High toxicity: Traditional catalysts are often highly toxic and pose a threat to the health of operators.
Strong volatile: Traditional catalysts are easy to volatile and cause environmental pollution.
Poor stability: Traditional catalysts are easy to decompose during storage and use, affecting the catalytic effect.

3.2 Comparison between DMCHA and traditional catalysts

Catalyzer	Toxicity	Volatility	Stability	Catalytic Efficiency
Triethylamine (TEA)	High	High	Poor	High
Dimethylamine (DMEA)	in	in	in	in
N,N-dimethylcyclohexylamine (DMCHA)	Low	Low	High	High

It can be seen from the table that DMCHA is better than traditional catalysts in terms of toxicity, volatility and stability, and has high catalytic efficiency. It is an ideal environmentally friendly polyurethane foaming catalyst.

4. Application examples of DMCHA

4.1 Building insulation materials

Among building insulation materials, polyurethane foaming materials are widely used in insulation layers of walls, roofs and floors due to their excellent insulation properties and lightweight properties. As a catalyst, DMCHA can effectively control the foaming process, ensure the uniformity and stability of the foam, thereby improving the performance of the insulation material.

4.2 Car interior

In car interior, polyurethane foaming material is used in seats, headrests, armrests and other parts to provide a comfortable riding experience. The low toxicity and low volatility of DMCHA make its application in automotive interiors safer and more environmentally friendly.

4.3 Furniture Manufacturing

In furniture manufacturing, polyurethane foaming materials are used for fillings of soft furniture such as sofas and mattresses. The efficient catalytic action of DMCHA can shorten the production cycle and improve production efficiency.

5. Production and storage of DMCHA

5.1 Production process

DMCHA production mainly produces N-methylcyclohexylamine through reaction of cyclohexylamine with formaldehyde, and then reacts with formaldehyde to produce N,N-dimethylcyclohexylamine. The specific reaction equation is as follows:

Cyclohexylamine reacts with formaldehyde to form N-methylcyclohexylamine:
```
C6H11NH2 + HCHO ? C6H11NHCH3 + H2O
```
N-methylcyclohexylamine reacts with formaldehyde to form N,N-dimethylcyclohexylamine:
```
C6H11NHCH3 + HCHO ? C6H11N(CH3)2 + H2O
```

5.2 Storage conditions

Storage Conditions	Requirements
Temperature	Storage temperature should be kept at 0-30°C to avoid high temperatures and direct sunlight.
Humidity	The storage environment should be kept dry and the relative humidity should not exceed 60%.
Container	Containers with good sealing properties should be used to avoid contact with air.
Shelf life	Under suitable conditions, the shelf life of DMCHA is generally 12 months.

6. Safety and environmental protection of DMCHA

6.1 Safe use

Although DMCHA is low in toxicity, the following safety matters should still be paid attention to during use:

Protective Measures: Operators should wear protective gloves, goggles and protective clothing to avoid direct contact.
Ventiation Conditions: The operating environment should maintain good ventilation to avoid inhaling steam.
Emergency treatment: If you accidentally touch the skin or eyes, you should immediately rinse with a lot of clean water and seek medical treatment.

6.2 Environmental performance

DMCHA has low toxicity and low volatility, making it better than traditional catalysts in environmental protection performance. It produces less waste during its production and use, and has less pollution to the environment. In addition, DMCHA has good biodegradability and can gradually decompose in the natural environment to reduce the long-term impact on the ecosystem.

7. DMCHA market prospects

With the increasing strictness of environmental protection regulations and the increasing awareness of consumers in environmental protection, the market demand for environmentally friendly polyurethane foaming catalysts continues to grow. As an efficient and environmentally friendly catalyst, DMCHA has broad market prospects. It is expected that DMCHA’s share in the polyurethane foaming catalyst market will gradually expand in the next few years and become one of the mainstream products.

8. Conclusion

N,N-dimethylcyclohexylamine (DMCHA) is an environmentally friendly polyurethane foaming catalyst, which has the characteristics of high efficiency, low toxicity and low volatility., automobiles, furniture and other fields have broad application prospects. Compared with traditional catalysts, DMCHA has obvious advantages in environmental performance, stability and catalytic efficiency. With the increase of environmental awareness and technological advancement, DMCHA will become the first choice for polyurethane foaming catalysts, promoting the sustainable development of the polyurethane industry.

Appendix: DMCHA product parameter table

parameters	Value/Description
Molecular formula	C8H17N
Molecular Weight	127.23 g/mol
Appearance	Colorless to light yellow liquid
Boiling point	160-162°C
Density	0.85 g/cm³
Flashpoint	45°C
Solution	Easy soluble in water and organic solvents
Storage temperature	0-30°C
Storage humidity	Relative humidity does not exceed 60%
Shelf life	12 months

Through the detailed introduction of the above content, I believe that readers have a deeper understanding of the choice of N,N-dimethylcyclohexylamine (DMCHA) as an environmentally friendly polyurethane foaming catalyst. DMCHA not only has excellent catalytic performance, but also performs well in environmental protection and safety, and is an important direction for the development of polyurethane foaming catalysts in the future.

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