N,N,N’,N”,N”-Penmethyldipropylene triamine: a multifunctional catalyst suitable for a variety of polyurethane formulations

Catalog

Introduction
Product Overview
Chemical structure and properties
Product Parameters
Application Fields
How to use and precautions
Safety and Environmental Protection
Conclusion

1. Introduction

Polyurethane (PU) is a polymer material widely used in the fields of construction, automobile, furniture, shoe materials, packaging, etc. Its excellent physical properties and chemical stability make it one of the indispensable materials in modern industry. However, the choice of catalyst is crucial in the production process of polyurethane, which not only affects the reaction rate, but also directly affects the performance of the final product. N,N,N’,N”,N”-pentamethyldipropylene triamine (hereinafter referred to as “pentamethyldipropylene triamine”) is a multifunctional catalyst. Due to its high efficiency, stability, environmental protection and other characteristics, it has gradually become one of the preferred catalysts in polyurethane production.

This article will introduce in detail the chemical structure, product parameters, application fields, usage methods, safety and environmental protection of pentamethyldipropylene triamine, aiming to provide readers with a comprehensive and in-depth understanding.

2. Product Overview

Penmethyldipropylene triamine is an organic amine compound with multiple methyl substituents and contains three nitrogen atoms in its molecular structure. This structure gives it excellent catalytic properties, especially in polyurethane reaction, which can effectively promote the reaction between isocyanate and polyol, shorten the reaction time and improve production efficiency.

2.1 Product Name

Chinese name: N,N,N’,N”,N”-pentamethyldipropylene triamine
English name: N,N,N’,N”,N”-Pentamethyldipropylenenetriamine

2.2 Molecular formula and molecular weight

Molecular formula: C11H25N3
Molecular weight: 199.34 g/mol

2.3 CAS number

CAS number: 3855-32-1

3. Chemical structure and properties

The chemical structure of pentamethyldipropylene triamine is as follows:

 CH3
        |
CH3-N-CH2-CH2-N-CH2-CH2-N-CH3
        ||
       CH3 CH3

Structurally, pentamethyldipropylene triamine contains three nitrogen atoms, and each nitrogen atom is connected with a methyl group. This structure makes it highly alkaline and good solubility, and can be miscible with a variety of organic solvents.

3.1 Physical Properties

Appearance: Colorless to light yellow liquid
Density: 0.89 g/cm³ (20°C)
Boiling point: 220-230°C
Flash point: 98°C
Solution: easy to soluble in organic solvents such as water, alcohols, ethers

3.2 Chemical Properties

Basicity: Pentamethyldipropylene triamine has strong alkalinity and can react with acid to form salts.
Catalytic properties: In polyurethane reaction, pentamethyldipropylene triamine can effectively promote the reaction between isocyanate and polyol, shorten the gel time, and improve the reaction efficiency.

4. Product parameters

To understand the properties of pentamethyldipropylene triamine more intuitively, the following table lists its main product parameters:

parameter name	Value/Description
Appearance	Colorless to light yellow liquid
Density (20°C)	0.89 g/cm³
Boiling point	220-230°C
Flashpoint	98°C
Solution	Easy soluble in organic solvents such as water, alcohols, ethers
Molecular Weight	199.34 g/mol
CAS number	3855-32-1
Storage Conditions	Cool, dry and ventilated places to avoid direct sunlight
Shelf life	12 months

5. Application areas

Penmethyldipropylene triamine is a multifunctional catalyst and is widely used in a variety of polyurethane formulations. byHere are its main application areas:

5.1 Rigid polyurethane foam

Rough polyurethane foam is widely used in building insulation, refrigeration equipment, pipeline insulation and other fields. Pentamethyldipropylene triamine can effectively promote the reaction between isocyanate and polyol, shorten the foaming time, and improve the closed cell rate and mechanical strength of the foam.

5.2 Soft polyurethane foam

Soft polyurethane foam is mainly used in furniture, mattresses, car seats and other fields. Pentamethyldipropylene triamine can adjust the softness and elasticity of the foam, improve the open-cell structure of the foam, and improve comfort and durability.

5.3 Polyurethane coating

Polyurethane coatings have excellent wear resistance, weather resistance and decorative properties, and are widely used in construction, automobile, furniture and other fields. Pentamethyldipropylene triamine can promote the curing reaction of the coating, shorten the drying time, and improve the adhesion and gloss of the coating.

5.4 Polyurethane Adhesive

Polyurethane adhesives have excellent bonding strength and weather resistance, and are widely used in bonding of wood, metal, plastic and other materials. Pentamethyldipropylene triamine can promote the curing reaction of adhesives, improve bonding strength and water resistance.

5.5 Polyurethane elastomer

Polyurethane elastomers have excellent wear resistance, elasticity and oil resistance, and are widely used in seals, tires, conveyor belts and other fields. Pentamethyldipropylene triamine can promote the cross-linking reaction of elastomers, improve its mechanical properties and aging resistance.

6. Methods and precautions

6.1 How to use

Penmethyldipropylene triamine is usually used in liquid form and can be added directly to polyurethane formulations. The specific usage method is as follows:

Addition amount: According to different polyurethane formulations, the amount of pentamethyldipropylene triamine is generally 0.1%-1.0% (by weight of polyol).
Mixing method: Mix pentamethyldipropylene triamine with polyol to ensure uniform dispersion.
Reaction conditions: Reaction is carried out at room temperature or heating conditions, and the specific temperature and time are adjusted according to the formula requirements.

6.2 Notes

Storage conditions: Pentamethyldipropylene triamine should be stored in a cool, dry and ventilated place to avoid direct sunlight and high temperatures.
Safe Operation: Wear protective gloves, glasses and masks during operation to avoid direct contact with the skin and eyes.
Waste Disposal: Abandoned Five ABasic dipropylene triamine should be treated in accordance with local environmental protection regulations to avoid pollution of the environment.

7. Safety and Environmental Protection

7.1 Security Information

Penmethyldipropylene triamine is an organic amine compound and has certain irritation and corrosiveness. The following is its security information:

Skin contact: It may cause skin irritation. You should immediately rinse with a lot of clean water and seek medical treatment if necessary.
Eye contact: It may cause eye irritation. You should immediately rinse with a lot of clean water and seek medical treatment if necessary.
Inhalation: It may cause respiratory irritation and should be moved to a fresh place in the air quickly and seek medical treatment if necessary.
Ingestion: It may cause gastrointestinal irritation. You should rinse your mouth immediately and seek medical treatment if necessary.

7.2 Environmental Protection Information

Pentamethyldipropylene triamine should comply with circulation protection regulations during production and use to reduce environmental pollution. The following is its environmental protection information:

Wastewater treatment: Wastewater containing pentamethyldipropylene triamine should be discharged after neutralization to avoid contaminating water bodies.
Waste Gas Treatment: The waste gas generated during the production process should be discharged after absorption and treatment to avoid polluting the atmosphere.
Solid Waste Treatment: Disposable pentamethyldipropylene triamine should be treated in accordance with hazardous waste to avoid contamination of soil.

8. Conclusion

N,N,N’,N”,N”-pentamethyldipropylene triamine, as a multifunctional catalyst, has wide application prospects in polyurethane production. Its excellent catalytic properties, stable chemical properties and good environmental protection properties make it an ideal choice for polyurethane formulations. Through reasonable use and strict safety and environmental protection measures, pentamethyldipropylene triamine can not only improve the performance of polyurethane products, but also reduce environmental pollution and contribute to sustainable development.

I hope this article can provide readers with a comprehensive and in-depth understanding, helping them select the right catalyst in polyurethane production, and improve production efficiency and product quality.