Toluylene diisocyanate

The interaction of hexamethylenediisocyanate with aicohois is expiosive when bases are present and there is no solvent present. The same is true for 2,4 toluylene diisocyanate. The reaction gives rise to an urethane formed through a similar process as the previous one (with water) ... 

In addition, polymers were prepared from toluylene diisocyanate and hexamethylenediisocyanate. 

The two elastomeric polyurethanes listed in Table 1.3, are synthesized in the following way PU-I is the reaction product of a prepolymer based on poly(tetramethylene glycol) ether and 2,4-toluylene diisocyanate (this product is analogous to Adiprenyl-167", Du Pont, USA) PU-II is the... 

The results of dT/dt and T measurements made during curing of two systems - macro(di-isocyanate) based on poly(tetraethylene glycol) and 2,4-toluylene diisocyanate cured by diamine (MDA) and epoxy diene oligomer cured by triethanol(amine titanate) are shown in Figs. 3.9 and 3.10, respectively. The monotonic increase in the parameters, monitored in the experiment,... 

Henschler, D., Assmann, W., Meyers, K.O. (1962). Zur Tox-ikologie der toluylen-diisocyanate. Arch. Toxicol. 19 364-87. 

Polyfu ral toluylene diisocyanate NS 100 (ultrathin wound modules Furfuryl alcohol, FI2SO4 North Star Res. Inst. 1000 99..6 70 3.5 pH 2-12... 

Polyurea Ethylenelmlne, toluylene" diisocyanate NS 100 ultrathin wound module... 

This part of the work is devoted to the study of adhesive joint formation based on urethane polymer mixtures with free NCO groups. The materials under investigation were adhesives obtained from toluylene diisocyanate (TDI) and hydroxyl-containing polyesters. The hydroxyl-containing components were ohgooxypropylenetriols (L-3003 and P-2200 oligoester, the product of reaction of diethylene glycol, trimethylolpropane and adipic acid interaction). 

TABLE 3.28 Physical and Mechanical Properties of Polyurethanes Based on Compatible Oligoethers, Trimethylolpropane, and Toluylene Diisocyanate... 

TABLE 3.30 Physical and Mechanical Properties of Polyurethane Nets Based on ODA and PTMG Incompatible Oligoether Mixtures, Trimelhylolpropane, and Toluylene Diisocyanate at 343 1 K... 

Pol5mrethanes were used that were based on trimethylolpropane— toluylene diisocyanate (TMP-TDI) and tetrahydrofuran and propylene oxide copolymer (THF-PO) obtained with various ratios of isocyanate... 

The synthesis of model compounds mimicking the structural characteristics of the possible subunits, and the comparison of their spectra with that of the hb polymer, represents a common method for assigning signals to subunits. This procedure, for the assignment of urea and urethane carbonyl carbon signals of a hb poly(urea urethane) synthesized from an AA (2,4-toluylene diisocyanate) and B2 B (diethanol amine) monomer [94], is shown in Figure 24.3. 

In addition to the DB, the fractionation process is quite heavily influenced by the different chemical nature of the byproducts, and also provides the possibility of their separation and identification. One example of the chemically controlled elution fractionation was that of a hb poly(urea urethane) this was the product of a complex AA + B2B reaction between 2,4-toluylene diisocyanate (TDI) and diethanol amine (DEA), additionally end group-modified with phenylisocyanate [94]. Whilst the fractionation of this sample led to a bimodal distribution, an analysis of the fi actions (using SEC with RI detection) showed clearly that the first peak of the distribution belonged to a low-molar-mass substance, identified by NMR and MALDI-TOF as the byproduct diphenylurea (Figure 24.9) [154]. 

Polyester-type polyurethane based on toluylene diisocyanate. 

Woolley and Fardell conducted comprehensive investigations of flexible and rigid polyurethane foams, including laboratory and full-scale experiments. It was established that a characteristic yellow smoke evolved from the polyurethanes at 200 to 300 °C, especially from the toluylene diisocyanate-based flexible foams. The yellow smoke comprised the total nitrogen content of the original polyurethane and amounted to about 25 per cent m/m of the foam. It was supposed that the thermally released isocyanate polymerized immediately in some way to form a particulate material (the solid part of the yellow smoke). Its apparent decomposition temperature was about 800 C. Mass spectrometry of its decomposition products detected hydrogen cyanide, acetonitrile, pyridine, and benzonitrile. The proportion of HCN increased with temperature. 

Tricrcsyl phosphate (DIN ISO) sec also TCP, TKP, TTP Tricresyl phosphate (lUPAC) see also TCF, TKP, TTP Toluylene diisocyanate Triisooctyl trimellitate (DIN ISO)... 

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