EDA = ethylene diamine

Figure 14.1 Energy minimized CPK models of generation 0 through 4 PAMAM and PPI dendrimers. EDA ethylene diamine DAB diamino butane G generation number numbers of end groups given in parentheses...

MDI = methylene bis-diphenyldiisocyanate. HMDl = hydrogenated MDI. PTMEG = polytetrametyl ethylene glycol. EDA = ethylene diamine. BD = butanediol carbonate is a proprietary carbonate diol. 

Fig. 14. Cloud-point temperature vs volume fraction of CO in a mixture with a stoichiometric DGEBA-EDA (ethylene diamine) system before reactioa The arrow indicates the critical-point composition predicted considering DGEBA-EDA as one pseudocomponent The dotted line represents the branch rich in CO predicted using the pseudocomponent approximation (Reprinted from Polymer International, 30, R.A. Ruseckaite, R.JJ. Williams, Castor-oil-modified epoxy resins as model systems of rubber-modified thermosets. I Thermodynamic analysis of the phase separation, 11-16, Copyright (1993), with kind permission from the Sodety of Chemical Industry, Londoa UK)...

Figure 6.29. Relaxation map of the temperature dependences of the a-, p-, and y-relax-ation angular frequencies for neat DGEBA, unreacted mixture of DGEBA/EDA (ethylene diamine), and DGEBA/EDA cured for 5 h at 40°C (circles), 55 °C (squares), or 70 °C (crosses). [Reprinted with permission from Beiner and Ngai (2005). Copyright 2005, American Chemical Society.]...

Figure 7.1 The synthesis of a PAMAM-type dendrimer proceeds from a diamine core [e.g., ethylene diamine (EDA)] by initial addition of the amines to the double bonds of methacrylate. Subsequent reaction of the methyl ester groups with EDA produces a G-0 dendrimer with four pendent amine groups. Another round of methacrylate and EDA additions results in a G-l PAMAM dendrimer containing eight primary amines.

Table 3 Cathodic Limits of Ethylene Diamine (EDA) and Pyridine Using Dropping Mercury Electrode... 

Ethylenediamine. Commercial ethylene-diamine (EDA) is produced by two different routes ... 

In this study, monopositive ethylene diamine (EDA) Ions were exchanged Into perfluorosulfonlo acid (PFSA) lonomer films to prepare facilitated transport membranes. The flux of HjS was measured with and without carrier present at ambient conditions as a function of HjS mole fraction In the feed gas stream. The selectivity of these membranes was determined by simultaneous measurements of HgS and CH fluxes from binary mixtures as a function of composition. Reaction equilibrium models were derived to predict the observed experimental data. 

Ethylene diamine HzN(CH2)2NH2, was chosen as the carrier to study the facilitated transport of HzS In Ion exchange membranes for several reasons. It can be singly protonated to produce a carrier which can then be exchanged Into an Ion exchange membrane to form the facilitated transport membrane. The mechanisms for the reactions of EDA with acid gases have been studied and some kinetic data exist as described below. 

Microencapsulation by interfacial polycondensation is a usefiil method to microencapsulate a liquid core material. Especially, polyurea and polyurethane microcapsules have been extensively investigated in various industries [209]. For example, aliphatic hexamethylene diisocyanate (HMDI) and aliphatic ethylene diamine (EDA) have been used to prepare polyurea microcapsules containing insecticide called diazinon [210]. A urea linkage is formed immediately by the reaction between an amine and an isocyanate group (see Figure 4.31), and a polyurea is synthesized by the reaction between an amine with two or more amine groups and an isocyanate with two or more isocyanate groups. 

The method can be illustrated by the preparation of a poly(amido amine), (PAMAM). These are synthesized using either trifnnctional ammonia (NH3) or tetrafunctional ethylene diamine (EDA), NHjCHjCHjNHj, as the core and EDA and methylacrylate (MA) as the branch monomers. The first step is the Michael addition of MA to ammonia or EDA followed by the amidation of each carboxymethyl group using EDA. 

Synthesis of hydrophilic magnetic particles with an average size of 2.6p.m and PDI 1.02, and a 24.3% iron oxide content was carried out by Ma et al. [101], She used coprecipitafion of iron oxide inside an amino functional polymer matrix. The total process involves three steps (a) preparation of poly(glycidyl methacrylate) (PGMA) seed particles by a dispersion polymerization, (b) functionalization of the seed PGMA particles with ethylene diamine (EDA), and (c) impregnation of iron salts and precipitation with ammonium hydroxide solution inside the functional polymers matrix. 

The authors suggest that amine-salt solvent systems based on ethylene diamine, rather than hydrazine, [99] have greater potential for fiber and film formation of regenerated cellulose. Indeed, they reported that stable, anisotropic solutions form at cellulose (DP of 210) concentrations greater than 10% w/w if EDA and KSCN are used. 

The TMPTA monomer and the Darocur 1173 photoinitiator are encapsulated in polyurethane microcapsules by in situ pol5mierization. Microcapsules are obtained by in situ pol)unerization in direct emulsion (OilAVater). At room temperature, deionized water and polyvinyl alcohol PVOH (3 wt. %) are mixed in a reactor equipped with a mechanical stirrer. Then, an organic solution of monomer (Hexamethylene diisocyanate HMDI/chloroform) containing the monomer (TMPTA) and photoinitiator (Darocur 1173) to be encapsulated is added to the aqueous solution leading to a stable QU/Water emulsion. After 5 minutes of stabilization, a hydrophilic monomer (Ethylene Diamine EDA in excess) is added to the emulsion - Figure 9. The reaction is continued until stabilization of the pH (around 5 hours). 

Mixing of DGEBA-type epoxies with multifunctional amines [e.g., 4,4 -diaminodiphenyl-methane (DDM), ethylene diamine (EDA), 4,4 -methylenebis 2,6-diethylaniline (MDEA), 4,4 -methylenebis(3-chloro-2,6-... 

The aliphatic polyamines most commonly used to cure epoxides are diethyleunine triamine (DETA) and triethylene tetramine (TETA). These are both pungent, low viscosity hquids and they are commonly used with the diglycidyl ether of bisphenol A type resins, where rapid low temperature cures are required. Three other commonly used poly amines are ethylene diamine (EDA), tetramethylene pentamine (TEPA) and diethylaminopropylamine (DEAPA)... 

Fig. 13.9. DSC cooling scans of (i) PET homopolymer ([r/] = 0.62 dL g ) (ii) PET chemically modified in the solid-state with ethylene diamine (EDA) vapor to replace 2.2 mol% of ester functionality with amide functionality (nitrogen content = 0.31%, PET-EDA-1 [r/] =0.5 dL g- PET-EDA-3 ...

FiO. 1. Products formed from NA in (a) trihydroxyindole assay (THll (b) ethylene-diamine assay (EDA), (c) fluorescence histochemistry (CH2O) and (d) enzyme radiochemical assay (CH ). 

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