Elastomer-modified epoxy coatings

The chemical literature reveals relatively new and varied interests for nitrile elastomer-modification of epoxy resins in diverse areas of coatings and primers. Desirable properties such as impact resistance, mandrel bend and adhesion improvement are attainable with little or no sacrifice in critical film properties. In some instances, it is documented that proper elastomer modification of select epoxy coatings will enhance corrosion and moisture resistance. This may relate to better film/substrate adhesion durability. The combined literature, journal and patent, has led to continuing study of nitrile elastomer modified epoxy coatings. [Pg.16]

Elastomer-Modified Epoxy Resins in Coatings Applications... [Pg.1]

Elastomer-Modified Epoxy Resins - Coatings Background... [Pg.9]

Lewis and co-workers (42) developed improved powder coatings with nitrile rubber-modification of an appropriate epoxy base (solid resin admixture) cured with an imidazoline-accelerated modified phenolic type hardener. Model coatings ground to 55 pm particle size, electrostatically applied to metals, cured 10 170°C, gave excellent therraocycling results as well as retained resistance to solvent attack. Elastomer-modified epoxy powder coatings have been covered extensively by Gelbel, Romanchick and Sohn in Chapter 5 of this volume. [Pg.9]

As previously mentioned in this chapter, carboxyl-reactive nitrile liquids appear to be the preferred modifiers for latent epoxy structural film adhesives. One of the major components used in formulating these adhesives is a solid epoxy resin of similar molecular weight (1000). This limited coatings study suggests that similar elastomer-modified epoxy resins are equally impressive in solution epoxy coatings. In addition. Table XI/Recipe 3 features a high impact coating modified with both liquid and solid carboxylated nitrile elastomers. [Pg.16]

W.D. Bascom and S. Mostovoy, "Adhesive Fatigue Failure of an Elastomer-Modified Epoxy, ACS Org. Coat, and Plast. Preprints, , 152 (1978). [Pg.480]

Elastomer-modified epoxy resins are used in composites and structural adhesives, coatings, and electronic applications. Similar approach to toughen epoxy vinyl esters using other elastomeric materials has been reported (204). Other elastomer-modified epoxies include epoxy-terminated urethane prepolymers, epoxy-terminated polysulfide, epoxy-acrylated urethane, and epoxidized polybutadiene. Preformed dispersions of epoxy-insoluble elastomers have been developed and reported to achieve toughening without Tg reduction (205,206). [Pg.2746]

The basic needs for either thermocycling or thermal shock improvements in epoxy resin encapsulants (and, to some extent, in molded insulations and coatings) have occasioned the examination of the utility of elastomer-modified epoxy resin systems. Carboxy-terminated liquid polymers have been shown to provide a... [Pg.222]

Drake, R. S., Egan, D. R., and Murphy, W. T., Elastomer modified epoxy resins in coatings applications. Rubber World, 1968, October, 15. [Pg.454]

At lesser rubber levels, heavy duty solventless coatings models based on dlethylenetrlamlne or fatty polyamide cures, showed elastomer-modification (10 phr rubber level) to advantage in Gardner impact, mandrel bend and corrosion-resistance testing (41). Impact testing (direct and reverse) gave 110 and 60 in-lbs, respectively for the rubber-modified fatty polyamide cured epoxy coating (14 days at R.T.), whereas a control formulation tested 10 in-lbs in each mode. [Pg.9]

This study of elastomer-modified solution epoxy coatings uses typical epoxy-polyamide and epoxy-polyfunctional amine based models. [Pg.11]

Epoxy, bisphenol A Epoxy, bisphenol F Epoxy resin Ethylene/propylene/dicyclopentadiene terpolymer Ethylene-propylene-ethyl idene norbomene Glycidyl neodecanoate PEG-4 dimethacrylate 3-(n-Pentadecyl) phenol Saccharin sodium anhydrous Saccharin sodium dihydrate Sodium-4-chlorophthalate resin modifier, adhesive coating elastomer Glyceryl hydrogenated rosinate resin modifier, adhesive coating film-formers Glyceryl hydrogenated rosinate resin modifier, adhesives... [Pg.5616]

It is the purpose of this review paper to examine the relatively newer uses of these elastomer types as resin modifiers within the broad range of epoxy-based coating systems. [Pg.2]

Uses Polymer additive for PVC and rubber, polyolefin and ABS processing, engineering plastics, PU rigid foams and elastomers, polyamides and polyesters, polyurethanes and epoxies modifier (increases flexibility, impact resist., toughness, hydrolytic stability) for industrial coatings (automotive, coil, textile, leather, wood lacquers)... [Pg.665]

Uses Modifier for elastomers, adhesives, fibers reactive diluent for epoxies reactive Intermediate for coatings sizing/finishing agent for fi-... [Pg.968]

Uses Modifier for elastomers, adhesives, fibers reactive diluent for epoxies reactive intermediate for coatings sizing/finishing agent for fiberglass silane intermediate in elec, coatings stabilizer of chlorinated compds., vinyl resins, rubber defoamer comonomer for polyepichlorohydrin rubber, unsat. polyester resins, and crosslinked PU elastomers curing system additive in bisphenol A-epichlorohydrin epoxies for food-contact articles... [Pg.162]

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