TDI See Toluene diisocyanate

NIALATE (563-12-2) see Ethion. NIALK (79-01-6) see trichloroethylene. NIAX TDI or NIAX TDI-P (584-84-9) see toluene diisocyanate. 

TDI. See Toluene-2,4-diisocyanate 2,6-TDI. See Toluene-2,6-diisocyanate TDI 80-20. See Toluene diisocyanate TDM TDM. Seet-Dodecyl mercaptan TDMAMP. See2,4,6-Tris (dimethylaminomethyl) phenol... 

TBP) see Tributyl phosphate (TCP) see Tricresyl phosphate (TDI) see Toluene-2,4-diisocyanate (TEA) see Triethanolamine (Tear gas) see 2-Chloroacetophenone (TED) see Triethylenediamine (TEL) see Tetraethyl lead (TETA) see Triethylenetetraamine 1,1,2,2-Tetrabromoethane (Acetylenetetrabromide) 79-27-6 X... 

Phosgenation. The most important reaction of y -toluenediamine is with phosgene [75-44-5] to give toluene diisocyanate TDI (see... 

Tuz Golu (lake), 5 784 Tversky similarity, 6 8 T vessicant agent, 5 816 physical properties, 5 817t Twaron fiber, 13 373 Tween surfactants, 24 150 12-membered ring macrolides, 15 272, 275t 2,6-TDI, reaction with a polyether triol, 25 459. See also Toluene diisocyanate (TDI)... 

Toluene diisocyanate (TDI) is made from the reaction of 2,4-toluenediamine and phosgene. The diamine is made by reduction of dinitrotoluene, which in turn is manufactured by nitration of toluene. See Chapter 11, Section 7. 

In the production of polyurethane elastomers, only diisocyanates are of any important use. The major diisocyanates manufactured and used are the 2,4 and 2,6-toluene diisocyanates (TDI) and 4,4 -diphenylmethane diisocyanates (MDI). See Figure 2.15. 

Toluene diisocyanate (TDI), methylene diisocyanate (MDI), and related chemicals are industrial components in the poiymerization of urethane coatings and insulation materiais. Most two-part urethane products contain some amount of one of these chemicais, and iesser amounts may oontaminate one-part systems. Methyl isocyanate (the toxin reieased in the Bhopal, India, tragedy) is a carbamate insecticide precursor it is not used in urethanes, has actions different from those of the TDI group of chemicals, and is not discussed here (see Table IV-4, p 593). 

Polyurethane foams, also known as urethane foams or U-foams, are prepared by reacting hydroxyl-terminated compounds called polyols with an isocyanate (see Figure 1.29 of Plastics Fundamentals, Properties, and Testing). Isocyanates in use today include toluene diisocyanate, known as TDI, crude methylenebis(4-phenyl-isocyanate), known as MDI, and different types of blends, such as TDI/crude MDI. Polyols, the other major ingredient of the urethane foam, are active hydrogen-containing compounds, usually polyester diols and polyether diols. 

A polyurethane adhesive is produced by reacting together two basic raw materials - a polyol and an isocyanate (see Step polymerization). The two most common polyols are based on polyether and polyester, and the two principal isocyanates used are toluene diisocyanate (TDI) and diphenyl methane diisocyanate (MDI), both of these latter products being extremely reactive. 

The most important polyurethane adhesive components are toluene diisocyanate (TDI), 4,4 -diphenylmethane diisocyanate (MDI), p-anisidine diisocyanate (DADI), hexamethylene diisocyanate (HDI) and triphenyl-methane triisocyanate (Desmodur R) (see Fig. 8.1), together with various polyester and polyether glycols. (See Fig. 1.9 of Chapter 1 for the formulae of TDI, MDI and HDI, and Fig. 8.5 for the formula of DADI.) Toluidine diisocyanate (TODI) (Fig. 8.1) is also used. 

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