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Toxic Effects of Isocyanates

This article explores the toxic effects of organic isocyanates, detailing their harmful impact on the respiratory system and skin, commonly used types in industry, regulatory limits, and safety measures to mitigate exposure risks in the workplace.

2024 07 22

Important Organic Isocyanates: Polymeric Methylene Diphenyl Diisocyanate (PAPI)

This article introduces Polymeric Methylene Diphenyl Diisocyanate (PAPI), detailing its production, applications in various foams, differences from MDI, and its significance in the polyurethane industry, particularly in the context of safety and performance advantages over TDI.

2024 07 20

Important Organic Isocyanates: Liquefied MDI

This article discusses the development and benefits of liquid MDI (methylenediphenyl diisocyanate), highlighting its advantages over solid MDI in manufacturing polyurethane products and detailing various modification techniques to achieve stable, easy-to-use liquid MDI forms.

2024 07 19

Important Organic Isocyanates: Diphenylmethane Diisocyanate (MDI)

This article discusses the properties, structure, and applications of Diphenylmethane Diisocyanate (MDI), highlighting its reactivity, toxicity, and advantages over TDI in producing high-strength polyurethane foams and various polyurethane elastomeric materials.

2024 07 18

Toluene Diisocyanate and Its Derivatives: Modified TDI and TDI Trimers

This article discusses the urethane modification of TDI, its application in various foams, and the methods and benefits of using modified TDI to enhance foam properties such as compatibility, viscosity, crosslinking, hardness, and flame retardancy.

2024 07 17

Important Organic Isocyanate-Toluene Diisocyanate (TDI)

This article explores the characteristics, uses, and physical properties of Toluene Diisocyanate (TDI), a key organic isocyanate primarily used in the production of flexible polyurethane foam, highlighting its advantages and various isomeric forms.

2024 07 16

Carbonylation Synthesis Process of MDI – Carbonylation Process with Carbon Dioxide and Other Methods

This article discusses various carbonylation synthesis processes for MDI, focusing on a non-phosgene method using carbon dioxide and dehydrating agents, as well as other methods for synthesizing isocyanates, highlighting recent advancements and comparative benefits.

2024 07 15

Carbonylation Synthesis Process of MDI: MDA-BTC Carbonylation Process

This article details the MDA-BTC carbonylation process for synthesizing MDI, highlighting the properties and advantages of bis(trichloromethyl) carbonate (BTC) as a safer, more stable, and environmentally friendly alternative to phosgene in industrial applications.

2024 07 14

Carbonylation Process of MDI: Aniline Oxidative Carbonylation Process

This article details the oxidative carbonylation process for producing MDI using aniline, developed by Asahi Kasei Corporation, highlighting the catalytic system, reaction conditions, steps involved, and advantages over traditional methods.

2024 07 12

Carbonylation Synthesis Process of MDI - Nitrobenzene Carbonylation Process

This article details the development and processes of MDI carbonylation synthesis, focusing on non-phosgene methods, catalyst usage, and separation techniques. Key insights from Arco and Mitsui Toatsu Chemicals' innovations are highlighted.

2024 07 11

Carbonylation Synthesis Process of TDI - Two-Step Method with Dimethyl Carbonate

This article explores Enichem's innovative two-step dimethyl carbonate method for synthesizing toluene diisocyanate (TDI) from amines, emphasizing its importance as a non-phosgene process and providing detailed examples of its efficiency and application.

2024 07 10

TDI Carbonylation Synthesis Process - Two-Step Carbon Monoxide Method

This article discusses the development of a new non-phosgene TDI synthesis process by Mitsui Toatsu Chemical Co., its collaboration with American Cyanamid, and the detailed carbonylation and decomposition steps involved in the production.

2024 07 09

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