Phenyl glycidyl ether PGE

Phenylethylene, see Styrene, monomer Phenyl glycidyl ether (PGE) 1 6.1... 

Phenyl formate, physical properties, 6 292t Phenyl glycidyl ether (PGE), 10 376 AT-Phenylglycine, 1 138 9 279 AT-Phenylglycinonitrile, 3 174 Phenylhydrazine synthesis, 13 573 Phenylhydrazone cleavage, microwaves in, 16 562... 

Materials. Reagent grade solvents, dimethyl formamide (DMF), dimethyl acetamide (DMAC), dimethyl sulfoxide (DMSO) and methanol were purchased from Baker, stored over molecular sieves once opened, and used without further purification. Aminoethane thiosulfuric acid (AETSA) purchased from Kodak, and Taurine, purchased from Alfa were purified by recrystallization. Each was thrice recrystallized from hot, deionized water. The crystalline precipitate was dried (48 hours at 40 °C) in-vacuo and subsequently stored in a desiccator. Benzophenone (BP) was purchased from Aldrich Chemical Company. QUANTACURE BTC (BTC), (4-benzolybenzyl) trimethylammonium chloride, was used as supplied by Aceto, Inc., Flushing, New York. Phenyl glycidyl ether (PGE) was purchased from MCB, distilled in-vacuo. and stored at -15 °C. Epon 828 was used as supplied bv Shell Chemical Company. The epoxy equivalent weight (EEW) for Epon 828 determined by an appropriate titration, was found to be 187.7. 

Matejka et al. 51> studied the reaction of phenyl glycidyl ether (PGE) with acetic or benzoic acid anhydride in the presence of benzyldimethylamine and also with benzoic acid as a co-catalyst. They found that the tert-amine is bound irreversibly through the formation of a quartemary ammonium salt as shown below. 

Figure 5.3 Reaction mechanism of the strictly alternating copolymerization of phenyl glycidyl ether (PGE, 2) and phthalic anhydride (PA, 3) initiated by imidazoles (la-c). (Leukel et al., 1996. Copyright 2001. Reprinted by permission ofWiley-VCH)...

The use of model compounds is a convenient starting point to determine the reaction path, particularly for stepwise polymerizations. For epoxy-amine systems, a monofunctional epoxide such as phenyl glycidyl ether (PGE) is often used for these studies (Verchere et al., 1990 Mijovic and Wijaya, 1994). Figure 5.10 shows the reaction scheme for the curing of a monoepoxide with a diamine. 

Figure 32. The a-relaxation times for the glass formers studied in the present work (cf. Fig. 27). In addition data of diglycidyl ether of bisphenol A (DGEBA) and phenyl glycidyl ether (PGE) are included time constants as obtained from DS data sets of m-TCP and 2-picoline were combined with xrl from conductivity and light scattering measurements, respectively, (a) Relaxation times as a function of T Ts. The systems differ by the slope of Ta at Tg. (b) By plotting xr, as a function of the rescaled temperature z = m(T/Tg — 1) the effect of an individual fragility is removed and a master curve is obtained for systems with similar To. Solid line represents Eq. (41) with Kf) — 17. (c) Upper part master curve for xa according to Eq. (42). Deviations of the data from Eq. (42) (solid line) indicate break-down of the VFT equation. Lower part The ratio lg(ra/rvft) shows deviations from a VFT behavior most clearly. Dashed vertical lines indicate shortest and fastest tx, respectively, observed. All the figures taken from Ref. [275].

Fig. 8. Dependence of the fraction of tertiary amine groups in the systems dodecylamine (DDA)-phenyl glycidyl ether (PGE), DDA-DGEBA, and HMD-DGEBA on conversion of amine functionalities. GPC determination DDA-PGE determination of Up and a, by titration HMD-DGEBA epoxide in excess . amine in excess O DDA-DGEBA amine in excess . The curve was calculated for e = 0,41...

Maitre et al. [314] carried out anionic polymerization of phenyl glycidyl ether (PGE) in miniemulsion using didodecyldimethylamonium hydroxide as an inisurf comhindition initiator and surfactant). Long chain alcohols were used as the costabilizer and stable miniemulsions were created by sonication. Monomer conversion was low, as was the degree of polymerization, which only... 

Phenyl glycidyl ether (PGE, 1,2-epoxy-3-phenaxypropane (CAS 122-60-1]) Irntating upon direct contact. A skin sensitizer. Based on animal studies, vapors are very irritating to eyes and respiratory tract, in high-dose animal studies, a CNS depressant producing liver, kidney, spleen, testes, thymus, and hematopoietic system injury. A carcinogen in test animals (lARC 2B). 0.1 ppm, S 100 ppm Coloriess liquid with an unpleasant, sweet odor. Vapor pressure is 0.01 mm Hg at 20°C (68°F). Combustible. Readily forms peroxides. 

Xu, L. Fu, J.H. Schlup, J.R. (19%). In situ near-infrared spectroscopic investi tion of the kinetics and mechanisms of reactions between phenyl glycidyl ether (PGE) and... 

Phenyl glycidyl ether, (PGE), ex BDH GP grade. 4,4 -Diisocyanatodiphenylene methane (MDI) ex BDH GP grade. Diglycidyl ether of bisphenol A (BADGE) ... 

Cresyl glycidyl ether (CGE) [26447-14-3] p-Fluorphenyl glycidyl ether Alpha-naphthyl glycidyl ether Phenyl glycidyl ether (PGE) [122-60-1]... 

Six epoxy-resin-exposed workers from a ski factory showed allergic reactions to the standard DGEBA epoxy resin with the TRUE-Test and Finn Chamber techniques as well as to the epoxy resin used in the factory (Jolanki et al. 1996). Three of the workers reacted to reactive diluents (diethylene glycol dig-lycidyl ether (DEGDGE) (Fig. 1), phenyl glycidyl ether (PGE) and 1,4-butanediol diglycidyl ether (BDDGE). 

Low MW epoxy diluents, particularly the aromatic monoepoxides such as phenyl glycidyl ether (PGE) are known to have high toxicity and should be handled with care. They are capable of causing skin and eye irritation and sensitization responses in people. They may also present a significant hazard from inhalation. 

Shechter and Wynstra were the first to examine the uncatalyzed epoxy-phenol reaction." They found that no reaction occurred when equimolar quantities of phenol and phenyl glycidyl ether (PGE, a low molecular weight epoxy) were held at 100 C. When held at 200°C, however, epoxide disappeared at a much faster rate than the phenol, with the net result that about 60% of the reaction was epoxide with phenol (Rxn. 1) and 40% was epoxide with secondary hydroxyl (Rxn. 2). The extent of the second reaction is particularly significant when one considers that the secondary hydroxyl concentration was originally zero and became finite only when some epoxide had reacted with phenol. 

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