News Details
TDI closed derivative paint crosslinking agent
2017-8-19 11:04:56
TDI closed derivative paint crosslinking agent
Toluene diisocyanate is the cheapest and most effective diisocyanate in the market. The TDI has price advantages and is suitable for preparation of closing oligomer with specific structure, but its application in the field of powder coating is very limited, because it is sensitive to uv light and seriously turn yellow. In the case of indoor powder coating, the products with low coating whiteness can be crosslinked with TDI closed derivatives.
The TDI closed derivative crosslinking agent has 2 isomers of 2, 4 - toluene diisocyanate and 2, 6 - toluene diisocyanate (TDI). According to the two isomers, there are three types of TDI closed derivatives of TDI in industry: (1) TDI - 65, 2, 4 - TDI65 %, 2, 6 - TDI35 %. (2) tdi-80, 2, 4-tdi80 %, 2, 6-tdi20 %, is the most common; (3) containing 2, 4 - TDI100 TDI - 100 %. It works with water to produce carbon dioxide. It is easy to function with compounds containing active hydrogen atoms. It is a linear polyurethane or polyurethane resin with diglycol.
Toluene diisocyanate (TDI) has two isomers: 2, 4 - toluene diisocyanate and 2, 6 - toluene diisocyanate. Toluene diisocyanate is white or light yellow liquid water, has strong excitant odour, have accumulated in the body and latent, has strong stimulation to the skin, eyes and respiratory tract, inhalation of high concentrations of toluene diisocyanate steam will bronchitis, bronchial pneumonia and pulmonary edema. Contact with the skin can cause dermatitis.
Liquid and eye contact can cause serious irritation, and if left untreated, permanent damage can be caused. Chronic bronchitis can be caused by prolonged exposure to toluene diisocyanate. Allergic to toluene diisocyanate can cause asthma, asthma, dyspnea and cough.
Mixed with ethyl ether, diethylene glycol, acetone, tetrachloride, benzene, chlorobenzene, kerosene, olive oil. It can react with hydroxyl compounds, water, amines and compounds with active hydrogen atoms to produce carbamate, urea, urea, etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
Toluene diisocyanate is the cheapest and most effective diisocyanate in the market. The TDI has price advantages and is suitable for preparation of closing oligomer with specific structure, but its application in the field of powder coating is very limited, because it is sensitive to uv light and seriously turn yellow. In the case of indoor powder coating, the products with low coating whiteness can be crosslinked with TDI closed derivatives.
The TDI closed derivative crosslinking agent has 2 isomers of 2, 4 - toluene diisocyanate and 2, 6 - toluene diisocyanate (TDI). According to the two isomers, there are three types of TDI closed derivatives of TDI in industry: (1) TDI - 65, 2, 4 - TDI65 %, 2, 6 - TDI35 %. (2) tdi-80, 2, 4-tdi80 %, 2, 6-tdi20 %, is the most common; (3) containing 2, 4 - TDI100 TDI - 100 %. It works with water to produce carbon dioxide. It is easy to function with compounds containing active hydrogen atoms. It is a linear polyurethane or polyurethane resin with diglycol.
Toluene diisocyanate (TDI) has two isomers: 2, 4 - toluene diisocyanate and 2, 6 - toluene diisocyanate. Toluene diisocyanate is white or light yellow liquid water, has strong excitant odour, have accumulated in the body and latent, has strong stimulation to the skin, eyes and respiratory tract, inhalation of high concentrations of toluene diisocyanate steam will bronchitis, bronchial pneumonia and pulmonary edema. Contact with the skin can cause dermatitis.
Liquid and eye contact can cause serious irritation, and if left untreated, permanent damage can be caused. Chronic bronchitis can be caused by prolonged exposure to toluene diisocyanate. Allergic to toluene diisocyanate can cause asthma, asthma, dyspnea and cough.
Mixed with ethyl ether, diethylene glycol, acetone, tetrachloride, benzene, chlorobenzene, kerosene, olive oil. It can react with hydroxyl compounds, water, amines and compounds with active hydrogen atoms to produce carbamate, urea, urea, etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
Toluene was obtained by nitrification of 2, 4 - and 2, 6-dinitrotoluene, and then 2, 4 - and 2, 6-diamino-toluene were obtained by adding hydrogen to the nickel catalyst, and then in chlorobenzene solution and photogas reaction.
As the raw material of polyurethane resin, it is used in the production of polychloro-ester foam plastics, coating, rubber, adhesives and sealants. It can also be used as rubber vulcanization agent and protein crosslinking agent. Including foam plastics; Polyurethane coating; Polyurethane rubber; Polyimide fibers and adhesives have some applications.
4 - m-m-phenylene diisocyanate; TDI. Toluene 2, 4 - diisocyanate; Tolyelenediisocyanate; CRESORCINOL DIISOCYANATE. 2, 4 - TDI; 2, 4 - TOLUENEDIISOCYANATE; 2, 4 - Tolylene diisocyanate. 2, 4 - DIISOCYANATOTOLUENE; 1 - METHYL - 1, 3 - PHENYLENE DIISOCYANATE. 4 - METHYL - 1, 3 - PHENYLENE DIISOCYANATE
Toluene diisocyanate is colorless transparent to light yellow liquid, with pungent smell; The color of light gets darker. Relative density 1.22 + / - 0.01 (25 ℃). Freezing point 3.5 ~ 5.5 ℃ (TDI - 65); 11.5 ~ 13.5 ℃ (TDI - 80); 19.5 ~ 21.5 ℃. The boiling point of 251 ℃. (closed cup flash point 132 ℃). Vapor density 6.0. The vapor pressure of 0.13 kPa (0.01 mmHg20 ℃). Vapors and air mixtures can be flammable by 0.9 to 9.5 percent. Insoluble in water; Soluble in acetone, ethyl acetate and toluene.
It is easy to react with compounds containing active hydrogen atoms: amine, water, alcohol, acid and alkali, especially with sodium hydroxide and tertiary amine, which are difficult to control the reaction and release a lot of heat. Carbon dioxide is one of the key reactions in the manufacturing process of polyurethane foam. Damp should be avoided.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Toluene was obtained by nitrification of 2, 4 - and 2, 6-dinitrotoluene, and then 2, 4 - and 2, 6-diamino-toluene were obtained by adding hydrogen to the nickel catalyst, and then in chlorobenzene solution and photogas reaction.
As the raw material of polyurethane resin, it is used in the production of polychloro-ester foam plastics, coating, rubber, adhesives and sealants. It can also be used as rubber vulcanization agent and protein crosslinking agent. Including foam plastics; Polyurethane coating; Polyurethane rubber; Polyimide fibers and adhesives have some applications.
4 - m-m-phenylene diisocyanate; TDI. Toluene 2, 4 - diisocyanate; Tolyelenediisocyanate; CRESORCINOL DIISOCYANATE. 2, 4 - TDI; 2, 4 - TOLUENEDIISOCYANATE; 2, 4 - Tolylene diisocyanate. 2, 4 - DIISOCYANATOTOLUENE; 1 - METHYL - 1, 3 - PHENYLENE DIISOCYANATE. 4 - METHYL - 1, 3 - PHENYLENE DIISOCYANATE
Toluene diisocyanate is colorless transparent to light yellow liquid, with pungent smell; The color of light gets darker. Relative density 1.22 + / - 0.01 (25 ℃). Freezing point 3.5 ~ 5.5 ℃ (TDI - 65); 11.5 ~ 13.5 ℃ (TDI - 80); 19.5 ~ 21.5 ℃. The boiling point of 251 ℃. (closed cup flash point 132 ℃). Vapor density 6.0. The vapor pressure of 0.13 kPa (0.01 mmHg20 ℃). Vapors and air mixtures can be flammable by 0.9 to 9.5 percent. Insoluble in water; Soluble in acetone, ethyl acetate and toluene.
It is easy to react with compounds containing active hydrogen atoms: amine, water, alcohol, acid and alkali, especially with sodium hydroxide and tertiary amine, which are difficult to control the reaction and release a lot of heat. Carbon dioxide is one of the key reactions in the manufacturing process of polyurethane foam. Damp should be avoided.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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