Shell Epon epoxy resin

Epoxidised allyl soyate resin (a mixture of epoxidised fatty acid esters) copolymerised with the base Shell Epon epoxy resin is used as matrix for glass fibre reinforced composite, which is prepared using a Durapul 6000 Labstar Pultrusion machine. The lubricating quality of soybean oil-based resin significantly reduces the pulling force which improves the structural performance characteristics of the composites. Curing is carried out in an oven at 80°C for one hour, followed by heating to 177 C for 1.5 h. 

Materials used were the standard commercially available grades. "CARDOLITE" Brand NC-513 is 3M s monofunctional epoxy reactive diluent CR-100, 3M s flow control agent DC-200, Dow-Corning antifoam Cab-O-Sil, Cabot fumed silica Epon 1001-X-75, Shell solid epoxy resin as 75% solution in xylene Tint-Ayd( ) EP-30-01, Daniels predispersed titanium dioxide liquid epoxy resin, standard bis-phenol-A diglycidyl ether of epoxide equivalent weight 190 grams/equivalent. 

Epon is a registered tradename of Hexion Specialty Chemicals. Epon epoxy resins were originally developed by Shell Chemical Co.). (DER is a registered trademark of the Dow Chemical Co.)... 

Fig. 6 Small-angle x-ray characterization of epoxy layered silicate nanocomposites synthesized using n-CioH2iNH3-montmorillonite (SCIO), Shell Epi-Cure curing agent (W) and Shell Epon 862 resin where q is the scattering vector [47]...

Epon is a registered tradename of Resolution Performance Products. Epon epoxy resins were originally developed by Shell Chemical Co. 

Shell offers a wide range of Epon epoxy resins and systems for specific processing and performance needs, and with cure times as short as a few minutes. Shrinkage is typically of the order of 1 - 3%, witti toughness often of the order of 8% elongation. They can also offer the fabrication of fatigue-resistant stmctures, significantly more economical than the use of vinyl ester or polyester resins. For example ... 

Epon Epoxy resins. Shell Epotuf Epoxy resins and hardeners, Reichhold... 

Shell Epon 828 epoxy resin was cured with 13 PHR (parts per hundred of epoxy) of triethylene tetramine as a typical polyamine, 65 PHR of Shell Epon V-15 polyamide as a typical polyamide, or 130 PHR of dodecenyl succinic anhydride as a typical anhydride. Liquid formulations were cast in 5iluminum molds and oven-cured as follows ... 

A modified BMI-epoxy resin system has been introduced by Shell Chemical Company. The system is a highly reactive blend of a bismaleimide, COM-PIMIDE 1206 (55-60% by weight solution of BMI in DMF), and EPON Resin 1151, a polyfunctional epoxy resin (60). In contrast to many polyimide resins on the market, no free MDA is present in the product. This is an important feature, since MDA has been identified as an animal carcinogen and possibly a human carcinogen. This resin system has been fully evaluated for use in multilayer PCB boards (61). 2-Methylimidazole is recommended as a catalyst. However, if required, the processing window can be widened by using 2-phenylimidazole... 

Trademarks of the principal epoxy resin producers are as follows Shell Chemical Co. (EPON. EPONOL. Epikotel Dow Cliemicul Co. (D.E.R.. D.E.N.. D.E.H.. Tactix. Quatrex) CIBA-GEIGY Corp. (Araldite) Dainippon Ink and Chemicals (Epoluf. Kelpoxy) and Union Carbide Co. (Unox). 

Solid epoxy resins are sometimes designated as 1-, 4-, 7-, or 9-type resins these approximate the degree of polymerization. Commercial products are designated similarly, eg, Epon 1001, 1004,1007, and 1009 (Shell Chemical Co.). The relationship between n value, epoxy equivalent weight, and melting point is shown in Table 5. 

F. 4. TTT cure diagram temperature of cure vs. time to the isoviscous event, gelation and vitrification, including TBA and gel fraction data , isoviscous (TBA) O, gelation (TBA) A, vitrification (TBA) , gelation (gel fraction). The system studied was a difunctional epoxy resin, Epon 828 (DGEBA, Shell Chemical Co.), cured with a tetrafimctional aliphatic amine, PACM-20. (bis(p-aminocyclohexyl)methane, DuPont]... 

The materials used were Epon 828 epoxy resin and methylene dianiline (Tonox), both from the Shell Chemical Co. The resin and curing agent were melted together, mixed, degassed, and cast between glass plates. The cure cycle was as follows 45 min at 60 C, 30 min at 80 C, and 2.5 hr at 150 C then slow cooling to room temperature. The amine to epoxy ratio (A/E) was varied from 0.7 to 2.0 (in terms of equivalents). Compositions are given in Table I. 

The preparation and characterization of the VR and ESR liquid rubbers and of the two-phase epoxy thermosets were described in detail previously (3-6). DGEBA is a solid epoxy resin (Epon 825) from Shell Chemical Company. ESO and ELO are commercial products from Atochem. Samples of VO and crambe oil were obtained from the U.S. Department of Agriculture. All other reagents and solvents were purchased from Aldrich Chemical Co. and Fisher Scientific Co. and used without additional purification. 

The polyester resin used in this study, MR 13006 (Aristech Corporation), was supplied as a 60-wt% solution in styrene monomer. The epoxy resin, a digly-cidyl ether of bisphenol A (Epon 828), was obtained from Shell Chemical Company. The reactive liquid rubber, an amino-terminated butadiene-acrylonitrile copolymer (ATBN 1300 x 16), was provided by the BFGoodrich Company. The resin was mixed with additional styrene monomer to maintain the ratio of reactive unsaturation in the polyester-to-styrene monomer at 1 to 3. We added 1.5 wt% of tert-butylperbenzoate initiator to the solution, which we then degassed under vacuum. The mixture was poured between vertical, Teflon-coated, aluminum plates and cured under atmospheric pressure at 100 °C. In the modified compositions, the rubber was first dissolved in the styrene monomer, and then all the other components were added and the solution cured as described. In all the compositions, the ratio of the amine functions with respect to the epoxy functions was kept at 1 to ensure complete cure of the epoxy. 

Epon . [Shell] Epoxy resin protective coatings. 

In a typical formulation of epoxy resin (Epon 825, Shell) cured with aluminum alkoxide, incorporation of 30% PPE increased the elongation at break from <2% to >17%. The heat distortion temperature increased from 160 to 195°C. The dissolution of PPE in epoxy formulation-raised its viscosity at 200°C from 0.2 to 4 Pas [Anonym., 1991]. 

A standard bisphenol A type epoxy resin, Epon 828 from Shell Chemical Co. U.S.A., and an amine type curing agent, Versamld 140 from General Mills Chemical, U.S.A., were used as received. The dleplsulflde resin was synthesized from Epon 828. 

Shell Chemical has produced EPON HPT epoxy resins, which are used in large parts made of graphite-7 reinforced prepreg material for primary aircraft structures. EPON 9000 series of epoxy resins produced by the same company have been used for fabricating, by wet filament winding process, fuselages and other large components that have been used in the prototype of Beech Aircraft s experimental small business aircraft, the Starship 1. 

Fettes and Gannon were the first to report reactions of liquid polysulfide polymers with epoxy resins [16]. In these adhesives, the epoxy resin is the major component. The polymer LP-3 in which n = 8 has been used most extensively. This polymer has a moleeular weight of about 1000 with viscosity in the range 7 to 12 P. The epoxy resins most widely used in adhesive formulations have viscosities the range 80 to 200 P with an epoxy equivalent of 175 to 210. Typical resins are Epon 820 and 828 (Shell), ERL-3794 (Union Carbide), and Araldite 6020 (CIBA). The epoxy-polysulfide reaction is prompted by organic amines (e.g. diethylenetriamine and benzyldimethylamine). The general reaction of a polysulfide polymer, epoxy resin, and amine hardner is... 

Epoxy resins have been used successfully as strong binders in some special mixtures. A suitable type is Epon 828 (Shell Oil Co.) diluted with the active additive AGE (allyl glycidyl ether) that reduces the viscosity to less than one-tenth and about 8% DETA (diethytene-triamine) as a cold-curing catalyst (actually a cross-linking agent). This mixture can be used very much like a polyester resin. For less rigid compositions, a poly functional mercaptan such as LP-2 and LP-3 (Thiokol Chemical Corp.) can be used and such a resin can be combined with epoxy resin. A number of these types of resins are claimed as pyrotechnic binders in a patent by Hart, Eppig, and Powers. ... 

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