Triethylenetetramine compounds

The hydrolyses of ADP and ATP were tried in the presence of low-molecular-weight analogs of polyethylenimine, i e. ethylenediamine, 77 (ED), diethylenetriamine, 78 (DT), triethylenetetramine, 79 (TT), tetraethylenepentamine, 80 (TP) and pentaethylenehexamine129). These compounds accelerated the reaction several times. The degree of the acceleration increased with increasing degree of polymerization. 

Propylene oxide was introduced into a container that contained epoxy resins it detonated. This accident was put down to compound polymerisation catalysed by triamines or superior homologues, which are used to harden resins (for example, triethylenetetramine). 

Polyamines are usually open chain compounds with primary, secondary, or tertiary amino groups. Instead of polyamines, polyimines are used without a sharp difference. Actually, imines are compounds with the =N— group or cycles such as ethyleneimine. Examples of oligoamines and polyamines are ethylenediamine, propanediamine, and 1,4-butanediamine and the respective products of condensation such as diethyleneamine, dipropylenetriamine, and triethylenetetramine. The compounds are colorless to yellowish liquids or solids with alkaline reaction. 

The presence of triethylenetetramine in the hydrothermal synthesis of open-framework zinc phosphates results in a number of frameworks with one- to three-dimensional structures. The structures include one-dimensional ladders, two-dimensional layer structures, and one structure where the tetramine is bound to the zinc center. The structural type was highly sensitive to the relative concentration of the amine and phosphoric acid.411 Piperazine and 2-methylpiperazine can be used as templating molecules in solvothermal syntheses of zinc phosphates. The crystallization processes of the zinc compounds were investigated by real time in situ measurements of synchrotron X-ray powder diffraction patterns.412... 

Compound Name Triethylenetetramine Tetrabutyl Titanate Tetrachloroethane Tetrachloroe thane T etrachloroethylene Carbon Tetrachloride Tetradecanol Tetradecanol... 

The reaction mechanism of liquid dimer polyamides and fatty amido amines with epoxy resins has been studied by Peerman et al. (27). who employed infrared spectroscopic analysis to determine reaction rates. They showed that the terminal epoxy content of a blend of amino-containing polyamide and epoxy resin disappeared more rapidly at 150 °C than does the epoxy content of blends of epoxy resin with triethylenetetramine or tris[(dimethylamino)-raethy1Jphenol. Both of these compounds are well-known for their fast cure at ambient temperatures. Correspondingly, the liquid polyamide or fatty amido amines-epoxy combinations cure slower than the other two systems at ambient conditions. 

Such a separation of diethylenetriamine and triethylenetetramine, which were available as relatively pure reference compounds, is illustrated in Figure 4.78. 

EP is synthesized by a reaction of compounds with two or more epoxy groups (e.g. the diglycidyl ether of bisphenol A, see Fig. 2.2.11). In general, epoxy resins consist of monomers or short chain polymers with an epoxide group at either end. The liquid, soluble or meltable reactive epoxide resin is cured by reactions with hardeners, e.g. di- or higher functional amines (i.e., triethylenetetramine), dicyandiamides (i.e., A-cyanoguanidine), carboxylic acids or anhydrides. 

Spermine and its analogs are toxic and are used as tumor biomarkers. They are also widely distributed in nature and industry. Therefore, the de-teetion of spermine is necessary. WPS can form stable complexation with spermine with a high association constant. When different diamine compounds (10 M), such as spermine, ursol, tetraethylenepentamine, triethylenetetramine, ethanediamine, 1,12-dodecylamine and 1,6-hexa-methylenediamine, are added to an aqueous solution of WP5-stabilized silver nanopartieles, respeetively, the yellow color of the solution containing spermine and its analogs (spermine, tetraethylenepentamine, and triethylenetetramine) becomes black, accompanied by a great decrease of the absorbance peak at 400 nm. However, other diamine compounds have little influence on the color and absorption peaks. All the experimental facts can be ascribed to the seleetive response of WP5-stabilized silver nanopartieles... 

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