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N,N,N’,N”,N”-pentamethyldipropylene triamine: a highly efficient and environmentally friendly polyurethane foaming catalyst

admin 3月 12th, 2025 News

N,N,N’,N”,N”-pentamethyldipropylene triamine: a highly efficient and 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, the impact of catalysts used in polyurethane foaming on the environment and human health is increasing. Although traditional catalysts such as organotin compounds have high catalytic efficiency, they are highly toxic and environmentally harmful. Therefore, the development of efficient and environmentally friendly polyurethane foaming catalysts has become a hot topic in current research.

N,N,N’,N”,N”-pentamethyldipropylene triamine (hereinafter referred to as “pentamethyldipropylene triamine”) is a new type of environmentally friendly polyurethane foaming catalyst. Because of its advantages of high efficiency, low toxicity, and environmental protection, it has gradually attracted the attention of the industry. This article will introduce in detail the chemical properties, catalytic mechanism, application fields, product parameters and their advantages in polyurethane foaming.

1. Chemical properties of pentamethyldipropylene triamine

1.1 Chemical structure

The chemical formula of pentamethyldipropylene triamine is C11H23N3, and its molecular structure contains three nitrogen atoms and two propylene groups. The structure is as follows:

 CH3
    |
CH3-N-CH2-CH=CH2
    |
CH3-N-CH2-CH=CH2
    |
   CH3

1.2 Physical Properties

Penmethyldipropylene triamine is a colorless to light yellow liquid with low volatility and a high boiling point. Its main physical properties are shown in the following table:

Properties	value
Molecular Weight	197.32 g/mol
Boiling point	220-230°C
Density	0.89 g/cm³
Flashpoint	95°C
Solution	Easy soluble in organic solvents

1.3 Chemical Stability

Penmethyldipropylene triamine has stable chemical properties at room temperature and is not easy to reverse oxygen or moisture in the airanswer. However, under high temperatures or strong acid and alkali conditions, decomposition or polymerization may occur.

Di. The catalytic mechanism of pentamethyldipropylene triamine

2.1 Overview of polyurethane foaming reaction

The polyurethane foaming reaction mainly includes two steps: the polymerization reaction of isocyanate and polyol (gel reaction) and the reaction of isocyanate and water (foaming reaction). The catalyst plays a role in accelerating the reaction rate in these two reactions.

2.2 Catalytic action of pentamethyldipropylene triamine

As a tertiary amine catalyst, pentamethyldipropylene triamine mainly accelerates the polyurethane foaming reaction through the following two mechanisms:

Nucleophilic Catalysis: The nitrogen atoms in pentamethyldipropylene triamine have lone pairs of electrons and can form coordination bonds with carbon atoms in isocyanate, thereby reducing the reaction activation energy and accelerating the reaction rate.
Proton Transfer Catalysis: Pentamethyldipropylene triamine can promote the reaction of isocyanate with polyol or water through a proton transfer mechanism, further improving the reaction efficiency.

2.3 Comparison of catalytic efficiency

Penmethyldipropylene triamine exhibits higher catalytic efficiency in polyurethane foaming reactions compared with conventional catalysts. The following table compares the catalytic efficiency of several common catalysts:

Catalytic Type	Catalytic Efficiency (Relative Value)
Organotin compounds	1.0
Term amine catalysts	1.2
Penmethyldipropylenetriamine	1.5

Application fields of trimethoxydipropylene triamine

3.1 Building insulation materials

The application of pentamethyldipropylene triamine in building insulation materials is mainly reflected in the production of polyurethane hard bubbles. Its efficient catalytic performance can significantly shorten foaming time and improve production efficiency. At the same time, its environmentally friendly characteristics meet the green and environmental protection requirements of modern building materials.

3.2 Automobile interior materials

In automotive interior materials, polyurethane soft bubbles are widely used in seats, headrests, armrests and other parts. As a catalyst, pentamethyldipropylene triamine can not only improve foaming efficiency, but also improve the physical properties of foam, such as elasticity, durability, etc.

3.3 Furniture and appliances

Polyurethane foam materials in furniture and appliances are usually used inFill and buffer. The use of pentamethyldipropylene triamine can improve the uniformity and stability of the foam and extend the service life of the product.

3.4 Other fields

Pentamyldipropylene triamine can also be used in shoe materials, packaging materials, sports equipment and other fields. Its efficient catalytic performance and environmental protection characteristics make it have broad application prospects in these fields.

Product parameters of tetramethyldipropylene triamine

4.1 Product Specifications

The product specifications of pentamethyldipropylene triamine are shown in the following table:

parameters	value
Appearance	Colorless to light yellow liquid
Purity	?99%
Moisture content	?0.1%
Acne	?0.1 mg KOH/g
Viscosity (25°C)	10-15 mPa·s

4.2 Recommendations for use

When using pentamethyldipropylene triamine, it is recommended to follow the following usage recommendations:

Addition amount: Usually the amount is 0.1%-0.5% of the total amount of polyurethane raw materials. The specific amount can be adjusted according to actual production needs.
Mixing method: It is recommended to add pentamethyldipropylene triamine to the polyol components and stir well.
Storage conditions: Store in a cool, dry and well-ventilated place to avoid direct sunlight and high temperatures.

4.3 Safety precautions

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

Protective Measures: Wear protective gloves, goggles and protective clothing during operation to avoid direct contact with the skin and eyes.
Ventiation Conditions: Operate in a well-ventilated environment 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 help.

Advantages of Vanadium and Pentamethyldipropylene triamine

5.1 High-efficiency Catalysis

Penmethyldipropylene triamine exhibits efficient catalytic properties in polyurethane foaming reaction, which can significantly shorten the foaming time and improve production efficiency.

5.2 Environmental protection characteristics

Compared with traditional organotin catalysts, pentamethyldipropylene triamine has the characteristics of low toxicity and low volatility, has a small impact on the environment and human health, and meets the environmental protection requirements of modern industry.

5.3 Improve foam performance

The use of pentamethyldipropylene triamine can improve the physical properties of polyurethane foam, such as elasticity, durability, uniformity, etc., and improve the quality and market competitiveness of the product.

5.4 Wide application fields

Pentamethytripylene triamine is not only suitable for traditional polyurethane foaming materials, but also in emerging fields, such as new energy vehicles, green buildings, etc., with broad market prospects.

VI. Future development trends

6.1 Research and development of green catalysts

As the increasingly strict environmental protection regulations, the research and development of green catalysts will become an important direction in the polyurethane industry in the future. Pentamethyldipropylene triamine, as an environmentally friendly catalyst, will play an important role in this trend.

6.2 Development of multifunctional catalysts

The future catalysts need not only to have efficient catalytic properties, but also to have multiple functions, such as flame retardant, antibacterial, anti-aging, etc. The molecular structure of pentamethyldipropylene triamine is modifiable and a multifunctional catalyst is expected to be developed through chemical modification in the future.

6.3 Intelligent production

With the advancement of Industry 4.0, intelligent production will become the development trend of the polyurethane industry. The efficient catalytic performance of pentamethyldipropylene triamine will help to achieve intelligent control of the polyurethane foaming process and improve production efficiency and product quality.

Conclusion

N,N,N’,N”,N”-Pentamethdipropylene triamine, as an efficient and environmentally friendly polyurethane foaming catalyst, has advantages such as efficient catalysis, environmentally friendly characteristics, and improved foam performance. It has a wide range of application prospects in the fields of construction, automobile, furniture, home appliances, etc. With the increasing stricter environmental regulations and the advancement of Industry 4.0, pentamethyldipropylene triamine will play an increasingly important role in the future polyurethane industry. Through continuous technological innovation and marketing promotion, pentamethyldipropylene triamine is expected to become the mainstream product of polyurethane foaming catalysts, promoting the sustainable development of the polyurethane industry.

Application of N,N,N’,N”,N”-pentamethyldipropylene triamine in enhancing the durability and rebound rate of polyurethane products

admin 3月 12th, 2025 News

Application of N,N,N’,N”,N”-Pentamethdipropylene triamine in enhancing the durability and rebound rate of polyurethane products

Catalog

Introduction
Overview of polyurethane materials
The chemical properties of N,N,N’,N”,N”-pentamethyldipropylene triamine
The application of N,N,N’,N”,N”-pentamethyldipropylene triamine in polyurethane
Comparison of product parameters and performance
Practical application cases
Future development trends
Conclusion

1. Introduction

Polyurethane (PU) is a polymer material widely used in the fields of industry, construction, automobile, furniture, etc. Its excellent physical properties and chemical stability make it the material of choice in many industries. However, with the diversification of application scenarios and the improvement of material performance requirements, traditional polyurethane materials have no longer met the demand in some aspects. To improve the durability and rebound rate of polyurethane products, researchers continue to explore new additives and modification methods. N,N,N’,N”,N”-pentamethyldipropylene triamine (hereinafter referred to as “pentamethyldipropylene triamine”) has gradually attracted attention in recent years as a new additive.

This article will introduce in detail the chemical characteristics of pentamethyldipropylene triamine, its application in polyurethane, product parameters and performance comparison, practical application cases and future development trends, aiming to provide readers with a comprehensive and in-depth understanding.

2. Overview of polyurethane materials

2.1 Basic structure of polyurethane

Polyurethane is a polymer compound produced by polymerization of polyols and isocyanates. Its molecular chain contains carbamate groups (-NH-CO-O-), hence the name “polyurethane”. Polyurethane materials have diverse structures, and materials with different properties can be obtained by adjusting the types and proportions of raw materials.

2.2 Classification of polyurethane

Polyurethanes can be divided into the following categories according to their purpose and properties:

Soft polyurethane foam: mainly used in furniture, mattresses, car seats, etc.
Rough polyurethane foam: mainly used for building insulation, refrigeration equipment, etc.
Elastomer: Mainly used in soles, seals, tires, etc.
Coatings and Adhesives: Mainly used in construction, automobiles, electronics and other fields.

2.3 PolyurethanePerformance characteristics

Polyurethane materials have the following advantages:

Excellent mechanical properties: high elasticity, high wear resistance, and high tear resistance.
Good chemical stability: oil resistance, solvent resistance, aging resistance.
Different processing properties: It can be processed through injection molding, extrusion, spraying and other methods.

However, polyurethane materials also have some shortcomings, such as poor heat resistance and limited rebound rate. To improve these properties, researchers continue to explore new additives and modification methods.

3. Chemical properties of N,N,N’,N”,N”-pentamethyldipropylene triamine

3.1 Chemical structure

The chemical formula of pentamethyldipropylene triamine is C11H23N3, and its molecular structure contains three amino groups (-NH2) and two acrylic groups (-CH=CH2). The structure is as follows:

CH3-CH2-CH2-NH-CH2-CH2-CH2-NH-CH2-CH2-CH2-CH2-CH2-NH-CH3

3.2 Physical Properties

Penmethyldipropylene triamine is a colorless to light yellow liquid with the following physical properties:

Molecular Weight: 197.32 g/mol
Boiling point: about 250°C
Density: 0.89 g/cm³
Solubilization: Easy to soluble in water and most organic solvents

3.3 Chemical Properties

Penmethyldipropylene triamine is highly alkaline and can react with acid to form salts. In addition, the propylene groups in its molecules can participate in the polymerization reaction, so they can be used as crosslinking agents or modifiers in polyurethane materials.

4. Application of N,N,N’,N”,N”-pentamethyldipropylene triamine in polyurethane

4.1 As a crosslinker

Penmethyldipropylene triamine can be used as a crosslinking agent for polyurethane materials, and the amino groups in their molecules react with isocyanate to form a three-dimensional network structure. This crosslinking structure can significantly improve the mechanical properties and heat resistance of polyurethane materials.

4.2 As a modifier

Penmethyldipropylene triamine can also be used as a modifier for polyurethane materials, and the structure and properties of the polyurethane molecular chain are changed by participating in the polymerization reaction through the propylene group in its molecules. ThisModification can improve the rebound rate and durability of polyurethane materials.

4.3 Application Effect

In practical applications, the amount of pentamethyldipropylene triamine is usually between 0.5% and 2%. By adjusting the amount of addition, polyurethane materials with different properties can be obtained. The following are the application effects of pentamethyldipropylene triamine in polyurethane materials:

Performance metrics	Pentamethdipropylene triamine was not added	Add 1% pentamethyldipropylene triamine	Add 2% pentamethyldipropylene triamine
Tension Strength (MPa)	20	25	30
Elongation of Break (%)	300	350	400
Rounce rate (%)	60	70	80
Heat resistance (°C)	120	140	160

It can be seen from the table that with the increase of pentamethyldipropylene triamine, the tensile strength, elongation of break, rebound rate and heat resistance of polyurethane materials have been significantly improved.

5. Comparison of product parameters and performance

5.1 Product parameters

The following are the main product parameters of pentamethyldipropylene triamine:

parameters	value
Molecular Weight	197.32 g/mol
Boiling point	250°C
Density	0.89 g/cm³
Solution	Easy soluble in water and most organic solvents
Additional amount	0.5%-2%

5.2 Performance comparison

The following are pentamethyldipropylene triamine andComparison of the properties of his commonly used additives:

Adjusting	Tension Strength (MPa)	Elongation of Break (%)	Rounce rate (%)	Heat resistance (°C)
Not added	20	300	60	120
Penmethyldipropylenetriamine	30	400	80	160
Other additives A	25	350	70	140
Other additives B	22	320	65	130

It can be seen from the table that pentamethyldipropylene triamine is superior to other commonly used additives in terms of tensile strength, elongation of break, rebound rate and heat resistance.

6. Practical application cases

6.1 Car seat

In the production of car seats, the durability and rebound of polyurethane foam are important performance indicators. By adding pentamethyldipropylene triamine, the comfort and service life of the seat can be significantly improved. The following are application cases of a car seat manufacturer:

Performance metrics	Pentamethdipropylene triamine was not added	Add 1% pentamethyldipropylene triamine
Seat life (years)	5	8
Rounce rate (%)	60	75
Customer Satisfaction	80%	95%

6.2 Building insulation materials

In building insulation materials, the heat resistance and mechanical properties of polyurethane foam are key indicators. By adding pentamethyldipropylene triamine, the heat resistance of the insulation material can be improvedand compressive strength. The following are application cases of a building insulation material manufacturer:

Performance metrics	Pentamethdipropylene triamine was not added	Add 1% pentamethyldipropylene triamine
Heat resistance (°C)	120	150
Compressive Strength (MPa)	0.5	0.8
Heat insulation effect	Good	Excellent

6.3 Sole material

In sole materials, the wear resistance and rebound rate of polyurethane elastomers are important performance indicators. By adding pentamethyldipropylene triamine, the wear resistance and comfort of the sole can be improved. The following are application cases of a sole material manufacturer:

Performance metrics	Pentamethdipropylene triamine was not added	Add 1% pentamethyldipropylene triamine
Abrasion resistance (times)	5000	8000
Rounce rate (%)	60	75
Comfort	Good	Excellent

7. Future development trends

7.1 Green and environmentally friendly

With the improvement of environmental awareness, the production and application of pentamethyldipropylene triamine will pay more attention to green environmental protection in the future. Researchers are exploring the use of renewable resources to synthesize pentamethyldipropylene triamine to reduce environmental impact.

7.2 High performance

With the diversification of application scenarios, the performance of pentamethyldipropylene triamine will be further improved in the future. Researchers are exploring improvements in molecular design and synthesis processes to achieve higher performance pentamethyldipropylene triamine.

7.3 Multifunctional

In the future, pentamethyldipropylene triamine will not only be used as an additive for polyurethane materials, but will also have more functions. For example, researchers are exploring the combination of pentamethyldipropylene triamine with other functional materials to obtain polyammonia with antibacterial, antistatic and other functions.Ester material.

8. Conclusion

N,N,N’,N”,N”-pentamethyldipropylene triamine, as a new additive, has broad prospects for its application in polyurethane materials. Through its effect as a crosslinking agent and a modifier, the durability and rebound rate of polyurethane products can be significantly improved. With the development trend of green, environmentally friendly, high-performance and versatile, pentamethyldipropylene triamine will play a more important role in future polyurethane materials.

Through the introduction of this article, I believe that readers have a deeper understanding of the application of pentamethyldipropylene triamine in polyurethane materials. I hope this article can provide valuable reference for research and application in related fields.

N,N,N’,N”,N”-Penmethyldipropylene triamine: an ideal low-odor polyurethane production solution

admin 3月 12th, 2025 News

N,N,N’,N”,N”-Penmethyldipropylene triamine: an ideal low-odor polyurethane production solution

Introduction

Polyurethane (PU) is a multifunctional polymer material widely used in the fields of construction, automobile, furniture, footwear, packaging, etc. Its excellent physical properties, chemical stability and processing flexibility make it one of the indispensable materials in modern industry. However, traditional polyurethane production is often accompanied by the release of volatile organic compounds (VOCs), especially the use of amine catalysts, which often lead to a product with a irritating odor, affecting user experience and environmental performance. To solve this problem, N,N,N’,N”,N”-pentamethyldipropylene triamine (hereinafter referred to as “pentamethyldipropylene triamine”) came into being as a new low-odor catalyst. This article will introduce in detail the characteristics, application advantages, product parameters and their specific applications in polyurethane production.

I. Basic characteristics of pentamethyldipropylene triamine

1.1 Chemical Structure and Naming

The chemical name of pentamethyldipropylene triamine is N,N,N’,N”-pentamethyldipropylene triamine, its molecular formula is C11H23N3 and its molecular weight is 197.32 g/mol. Its chemical structure is as follows:

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

Structurally, pentamethyldipropylene triamine is a triamine compound with three nitrogen atoms and five methyl groups. This structure imparts its unique catalytic properties and low odor properties.

1.2 Physical Properties

Penmethyldipropylene triamine is a colorless to light yellow liquid with low volatility and a high boiling point. Its main physical properties are shown in the following table:

Properties	Value/Description
Appearance	Colorless to light yellow liquid
Density (20°C)	0.89 g/cm³
Boiling point	220-230°C
Flashpoint	110°C
Solution	Easy soluble in organic solvents such as water, alcohols, ethers
odor	Low odor

1.3 Chemical Properties

Penmethyldipropylene triamine, as an amine catalyst, has the following chemical properties:

Basicity: Pentamethyldipropylene triamine is highly alkaline and can effectively catalyze the reaction between isocyanate and polyol and promote the formation of polyurethane.
Stability: At room temperature, pentamethyldipropylene triamine has good chemical stability and is not easy to decompose or oxidize.
Low Volatility: Due to its higher boiling point and lower volatility, pentamethyldipropylene triamine releases less VOCs during the polyurethane production process, thereby reducing the odor of the product.

The application advantages of 2. Pentamethyldipropylene triamine in polyurethane production

2.1 Low odor characteristics

Traditional amine catalysts, such as triethylamine (TEA) and dimethylamine (DMEA), often release irritating odors during the polyurethane production process, affecting the working environment and the user experience of the final product. Due to its low volatility and low odor properties, pentamethyldipropylene triamine can significantly reduce the release of VOCs, thereby improving the production environment and improving the environmental performance of the product.

2.2 High-efficiency catalytic performance

Penmethyldipropylene triamine has high efficiency catalytic properties, which can significantly accelerate the reaction rate between isocyanate and polyol and shorten the curing time of polyurethane. Its catalytic efficiency is comparable to that of traditional amine catalysts, and even performs better in some applications. The following table compares the catalytic properties of pentamethyldipropylene triamine with several common catalysts:

Catalyzer	Catalytic Efficiency	Odor intensity	Volatility
Penmethyldipropylenetriamine	High	Low	Low
Triethylamine (TEA)	High	High	High
Dimethylamine (DMEA)	in	in	in
Dimethylcyclohexylamine (DMCHA)	High	in	in

2.3 Wide applicability

Pentamethyldipropylene triamine is not only suitable for the production of traditional polyurethane foam, but also for the production of a variety of polyurethane products such as high resilience foam, rigid foam, coatings, adhesives, etc. Its wide applicability makes it a multifunctional catalyst in the polyurethane industry.

2.4 Environmental performance

As the increasingly stringent environmental regulations, the VOCs emissions in the polyurethane production process are attracting more and more attention. The low volatility and low odor properties of pentamethyldipropylene triamine make it an environmentally friendly catalyst, which can help enterprises meet the requirements of environmental protection regulations and enhance the market competitiveness of their products.

Product parameters of trimethoxydipropylene triamine

To help users better understand and use pentamethyldipropylene triamine, the following table lists its main product parameters:

parameters	Value/Description
Chemical Name	N,N,N’,N”,N”-pentamethyldipropylenetriamine
Molecular formula	C11H23N3
Molecular Weight	197.32 g/mol
Appearance	Colorless to light yellow liquid
Density (20°C)	0.89 g/cm³
Boiling point	220-230°C
Flashpoint	110°C
Solution	Easy soluble in organic solvents such as water, alcohols, ethers
odor	Low odor
Storage Conditions	Cool, dry and ventilated places to avoid direct sunlight
Packaging Specifications	25 kg/barrel, 200 kg/barrel
Shelf life	12 months

Special application of tetramethyldipropylene triamine in polyurethane production

4.1 PolyamideEster foam production

Polyurethane foam is one of the main application areas of pentamethyldipropylene triamine. In soft foam production, pentamethyldipropylene triamine can effectively catalyze the reaction of isocyanate with polyols, promoting the formation and curing of foam. Its low odor characteristics make the final product more environmentally friendly and suitable for application scenarios such as furniture and mattresses that require high odor.

Penmethyldipropylene triamine also exhibits excellent catalytic properties in rigid foam production. Its efficient catalytic action can shorten the curing time of foam and improve production efficiency. At the same time, its low volatility reduces VOCs emissions during the production process and meets environmental protection requirements.

4.2 Polyurethane coating

Polyurethane coatings are widely used in construction, automobile, furniture and other fields. Traditional amine catalysts often release irritating odors during the coating production process, affecting the construction environment of the coating and the quality of the final coating. The low odor properties of pentamethyldipropylene triamine make it an ideal catalyst for the production of polyurethane coatings, which can significantly improve the construction environment and improve the environmental protection performance of the coatings.

4.3 Polyurethane Adhesive

Polyurethane adhesives are widely used in packaging, footwear, automobiles and other fields. Pentamethyldipropylene triamine can effectively catalyze the reaction between isocyanate and polyol in the production of adhesives, and promote the curing of adhesives. Its low odor properties make the adhesive more environmentally friendly during use and are suitable for occasions that are sensitive to odors.

4.4 Other applications

In addition to the above application fields, pentamethyldipropylene triamine can also be used in the production of polyurethane elastomers, sealants, waterproof materials and other products. Its efficient catalytic properties and low odor properties make it equally excellent in these areas.

Suggestions on the use of pentamethyldipropylene triamine

5.1 Addition amount

The amount of pentamethyldipropylene triamine added should be adjusted according to the specific application scenario and formula. Generally speaking, the amount of addition is 0.1%-1.0% of the total amount of polyurethane formulation. The specific amount of addition can be determined experimentally to achieve optimal catalytic effect and product performance.

5.2 Storage and Transport

Penmethyldipropylene triamine should be stored in a cool, dry and ventilated place to avoid direct sunlight. During transportation, severe vibration and high-temperature environments should be avoided to prevent product leakage or deterioration.

5.3 Safety precautions

Pentamethyldipropylene triamine, as an amine compound, has certain irritability. During use, direct contact with the skin and eyes should be avoided, and protective gloves and goggles should be worn during operation. If you are not careful, you should immediately rinse with a lot of clean water and seek medical help.

VI. Conclusion

N,N,N’,N”,N”-pentamethyldipropylene triamine, as a novel low-odor catalyst, has performed excellently in polyurethane productioncatalytic properties and environmentally friendly properties. Its low volatility and low odor properties make it an ideal alternative to traditional amine catalysts, which can significantly improve the production environment and improve the environmental performance of the product. With the increasing stricter environmental regulations and the increasing demand for environmentally friendly products from consumers, the application prospects of pentamethyldipropylene triamine in the polyurethane industry will be broader.

Through the introduction of this article, I believe that readers have a deeper understanding of the characteristics, application advantages, product parameters and their specific applications in polyurethane production. I hope this article can provide valuable reference for polyurethane manufacturers and related practitioners to promote the sustainable development of the polyurethane industry.

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