Phenyl glycidyl ether epoxy

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. 

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. 

Monofunctional epoxy diluents are used primarily with DGEBA epoxy blends. The most common monofunctional diluents are butyl glycidyl ether and phenyl glycidyl ether. The effect of butyl glycidyl ether and other reactive diluents on the viscosity of epoxy resin is shown in Fig. 6.3. Because the monofunctional diluents reduce crosslink density, they are used at relatively low levels to avoid degrading heat and chemical resistance or other properties of the adhesive. 

Reactive diluents can be used to reduce the modulus and increase the elongation of the cured waterborne epoxy formulations just as they are often used for 100 percent solids and solvent-borne epoxy adhesives. The reactive diluents become codispersed in the formulation with mechanical and chemical stability similar to that of the base epoxy emulsion. Polyglycidyl ether of caster oil, phenyl glycidyl ether, and diglycidyl ether of neophenyl glycol are examples of mono- and difunctional reactive diluents that have been used to improve flexibility and increase the tack-free time of waterborne epoxy adhesives. 

The />,/> -diamino azobenzene (DAA) reactivity probe, described in the previous section, has been demonstrated to form reaction products with DGEBA-based epoxy resins that have a greater fluorescence intensity than does DAA itself. By examining model adducts with phenyl glycidyl ether, the intensity enhancement varied from 1400 times to 9 times depending on whether the DAA reacted at a crosslink or a chain end, respectively... 

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. 

However, the expected increase of the intensity of Af with temperature for secondary relaxations is not always observed as is evidenced by data relative to two epoxy resins poly[(phenyl glycidyl ether)-co-formaldehyde] (PPGE) and DGEBA, where the dielectric strength of the P process decreases with temperature [74]. The additionally detected y secondary process follows the usual pattern. In these systems the y relaxation is more intense than the P process, as was also found in n-ethyleneglycol dimethaciylate monomers with [47]. For the poly(n-alkyl... 

Synonyms Epoxy novolac resin Epoxy-phenolic resin Epoxy phenol novolac 2-Phenoxymethyloxirane, compd. with formaldehyde Poly [(phenyl glycidyl ether)-co-formaldehyde... 

Poly (1,4-phenylene sulfide) resin. See Polyphenylene sulFrde resin Poly [(phenyl glycidyl ether)-co-farmaldeh e. See Epoxy-novolac Polyphenylmethyl siloxane. See Phenyl methicone Phenyl trimethicone Polyphosphoric acid, ammonium salt. SeeAmmonium polyphosphate Poly (polytetrahydrofuran carbonate) diol. See Polyether-polycarbonate diol... 

Propane, 1-butoxy-2,3-epoxy-. See Bulyl glyckfyl ether Propane, 1-(p-t-butylphenoxy)-2,3-epo]qr-- p-t-Bulyl phenyl glycidyl ether... 

Phenol-furfural resin. See Phenolic resin Phenol glycidyl ether. See Phenyl glycidyl ether Phenol, 5-[(2-hydroxyethyl) amino]-2-methyl-. See 2-Methyl-5-hydroxyethylaminophenol Phenol, 4-[(2-hydroxyethyl) amino]-3-nitro-. See 3-Nitro-p-hydroxyethylaminophenol Phenolic-epoxy resin... 

Phenylformic acid. See Benzoic acid Phenyl glycidyl ether CAS 122-60-1 EINECS/ELINCS 204-557-2 Synonyms 1,2-Epoxy-3-phenoxypropane 2,3-Epoxypropyl phenyl ether Glicidyl phenyl ether Glycidyl phenyl ether Oxirane, (phenoxymethyl)-... 

Poly [(phenyl glycidyl ether)-co-formaldehyde. See Epoxy-novolac... 

A linear-chained epoxy resin was formulated from phenyl glycidyl ether and nadic methyl anhydride, catalysed by benzyldimethylamine (248). An IR fibre-optic probe was used to follow the conversion of a thermosetting tetrafunctional epoxy resin in which the hardener was an aromatic diamine and a carboxylic dianhydride. A polymerisation system consisting of a cycloaliphatic diepoxide, epoxidised natural rubber (ENR), glycidyl methacrylate (GMA) and a cationic photoinitiator, triphenylsulfonium hexafluoro-antimonate, was studied (75). Multifunctional epoxy/ amine formulations (Epon 825 plus 4,4 -methylene-... 

Alinear-chained epoxy resin was formulated from phenyl glycidyl ether and nadic methyl anhydride catalysed by benzyldimethylamine. Intermolecular polymerisations were modelled as a parallel set of propagation reactions. FTIR spectroscopy was used to determine the concentrations of the oxirane, anhydride and ester moieties within the resin as a function of time for two isothermal cures. Data analyses yielded the propagation rate constant as a function of temp, and the concentration of initiator, including contributions fl om impurities within the resin. Results obtained compared favourably with measurements on fractionated resins, using GPC. Population density distributions are described by Poisson molar distributions for this resin. 25 refs. 

Examples of reactive diluents for epoxy resins include phenyl glycidyl ether, butylglycidyl ether, allylglycidyl ether, and glycerol-based epoxy resins. Diluents should be used sparingly in amounts of 5-15 phr, enough to reduce the viscosity of the adhesive, yet not degrade the properties of the cured material. 

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). 

Most patients show sensitivity to epoxy resin, but only about 30% show positive results (mostly to chromate, but also to thiuram mix and carba mix) when patch tested with the standard series. Of the three patients who were positive to chromate in our series, two were among the oldest workers and had worked for several years in classical construction work. In tests using the plastics and glues series, we found that five of the patients were sensitive to phenyl glycidyl ether and three to 4,4 -diaminodiphenylmethane, which in one patient was the only sensitivity found. 

Hardener in epoxy resin systems Phenyl glycidyl ether, 0.25% petrolatum. Reactive diluent in epoxy resin based adhesives Triethanolamine, 2.5% petrolatum. In natural rubber glues... 

---