1,3-Diazetidine-2,4-dione, 1,3-bis(3-isocyanatomethylphenyl)-
2,4-dioxo-1,3-diazetidine-1,3-bis(methyl-m-phenylene) diisocyanate
CAS: 26747-90-0
Molecular Formula: C18H12N4O4
1,3-Diazetidine-2,4-dione, 1,3-bis(3-isocyanatomethylphenyl)- - Names and Identifiers
1,3-Diazetidine-2,4-dione, 1,3-bis(3-isocyanatomethylphenyl)- - Physico-chemical Properties
| Molecular Formula | C18H12N4O4 |
| Molar Mass | 348.32 |
1,3-Diazetidine-2,4-dione, 1,3-bis(3-isocyanatomethylphenyl)- - Introduction
2,4-dioxo-1,3-diazetidine-1,3-bis(methyl-m-phenylene) diisocyanate, also known as TDI dimer, is a compound prepared by the reaction of toluene diisocyanate (TDI). Its chemical formula is C16H12N2O2.
TDI dimers have the following properties:
1. Appearance: white crystalline solid or powder substance;
2. Melting Point: about 50 degrees Celsius;
3. Solubility: Soluble in organic solvents, such as methanol, acetone and xylene.
TDI dimer has a wide range of applications in industry:
1. Polyurethane production: As one of the raw materials for the production of polyurethane materials, it is used to make soft foam suitable for furniture such as car seats, sofas and mattresses;
2. Filling material: It can be used to prepare mild and elastic filling materials, such as foam rubber, sealing materials and anti-noise materials;
3. Polyurethane adhesive: as an important raw material for the production of polyurethane adhesive.
The method for preparing TDI dimer is generally obtained by short-range polycondensation of toluene diisocyanate. Specific conditions for this reaction include temperature, reaction time, and choice of catalyst, among others.
The safety information of TDI dimer needs attention:
1. Toxicity: TDI dimer is irritating, irritating and corrosive to the skin and eyes. Inhalation of vapors of TDI dimer may cause damage to the respiratory system.
2. Safe operation: when contacting and handling TDI dimer, appropriate protective equipment should be worn, such as chemical accident protective clothing, glasses and gloves.
3. Ventilation: Ensure that the operating area has good ventilation to avoid excessive vapor concentration.
4. Storage: store TDI dimer in a cool, dry and well-ventilated place, and store it separately from oxidants, ammonia and ketones to prevent accidents.
When using TDI dimer, ensure that relevant safety operation measures are followed, and refer to the product's safety data sheet for detailed safety instructions.
TDI dimers have the following properties:
1. Appearance: white crystalline solid or powder substance;
2. Melting Point: about 50 degrees Celsius;
3. Solubility: Soluble in organic solvents, such as methanol, acetone and xylene.
TDI dimer has a wide range of applications in industry:
1. Polyurethane production: As one of the raw materials for the production of polyurethane materials, it is used to make soft foam suitable for furniture such as car seats, sofas and mattresses;
2. Filling material: It can be used to prepare mild and elastic filling materials, such as foam rubber, sealing materials and anti-noise materials;
3. Polyurethane adhesive: as an important raw material for the production of polyurethane adhesive.
The method for preparing TDI dimer is generally obtained by short-range polycondensation of toluene diisocyanate. Specific conditions for this reaction include temperature, reaction time, and choice of catalyst, among others.
The safety information of TDI dimer needs attention:
1. Toxicity: TDI dimer is irritating, irritating and corrosive to the skin and eyes. Inhalation of vapors of TDI dimer may cause damage to the respiratory system.
2. Safe operation: when contacting and handling TDI dimer, appropriate protective equipment should be worn, such as chemical accident protective clothing, glasses and gloves.
3. Ventilation: Ensure that the operating area has good ventilation to avoid excessive vapor concentration.
4. Storage: store TDI dimer in a cool, dry and well-ventilated place, and store it separately from oxidants, ammonia and ketones to prevent accidents.
When using TDI dimer, ensure that relevant safety operation measures are followed, and refer to the product's safety data sheet for detailed safety instructions.
Last Update：2024-04-10 22:29:15
