Epoxy-acrylic finishes resin

Use For inks and coatings based on resins of vinyl, epoxy, acrylic, polyurethane, polyamide, nitrocellulose, chlorinated rubber. Also used in automotive finishes, extractions, crystallization, diesel fuel additives, and intermediates. 

Esters of Epoxy Resins and Acrylic Acid. If low molecular mass liquid to semisolid epoxy resins are heated with acrylic acid at ca. 120 C, epoxy acrylates are produced. These resins can be dissolved in low molecular mass acrylate esters and used as raw materials for UV-curable finishes. They are mainly used for paper and cardboard (record sleeves), but also for metals. 

Uses Crosslinking agent in melamine resin coating systems, general industrial finishes, coil-coating enamels, appliance finishes, useful with alkyd, polyester, thermosetting acrylic, epoxy, and cellulose resins Properties Gardner 2 max. clear, vise, liq. limited water-sol. dens. 10.0 Ib/gal vise. (G-H) X-Z2 flash pt. > 180 F 98% NV Cymel 350 [Cytecind.j... 

Uses Crosslinking agent for epoxy, afl d/polyester, or acrylic resins, for use in solv.-borne coatings, industrial stoving sterns, waterborne stoving finishes, resinous/polymeric food-contact coatings Regulatory FDA 21 CFR 175.300... 

Chem. Descrip. Difunctional epoxy acrylate oligomer Uses Film-former for epoxy resins in UV/EB-curable formulations, lithographic, screen, and metal deco printing inks, clear coatings for paper/ paperboard, wood, metal, and rigid plastic substrates Features Fast cure speed formulations show high surface hardness and gloss finish, exc. scuff and solv. resist, chars. 

Uses Adhesion promoter for filled and reinforced resins (urethanes, epoxies, acrylates, phenolics), adhesives, sealants, coatings, glass fiber sizes and finishes, primers, and foundry sand binders Features Improves high-temp, resist., increases stability of resin/silane bond at high temps. 

Jolanki R (1991) Occupational skin diseases from epoxy compounds. Epoxy resin compounds, epoxy acrylates and 2,3-epoxypropyl trimethyl ammonium chloride. Acta Derm Venereol Suppl (Stockh) 159 1-80 Jolanki R, Estlander T, Kanerva L (1987) Occupational contact dermatitis and contact urticaria caused by epoxy resins. Acta Derm Venereol Suppl (Stockh) 134 90-94 Jolanki R, Estlander R, Kanerva L, Tarvainen K (1992) Occupational allergic contact dermatitis caused by a finished reinforced polyester plastic product. In Proceedings of the 18th World Congress of Dermatology. New York City, June 12-18 Jolanki R, Kanerva L, Estlander T (1995) Occupational allergic contact dermatitis caused by epoxy diacrylate in ultraviolet-light-cured paint, and bisphenol A in dental composite resin. Contact Dermatitis 33 94-99... 

The most commonly used radiation-curable resin systems for cloth finishing are based on acrylated epoxies, acrylated urethanes, and patented hybrid systems which form interpenetrating networks. Mixtures containing 25-40% phenolic or other heat-curable resins are particularly useful. 

Good quality steel is used and electrozinc is preferred for washing machines. Steel is pretreated with iron phosphate for economy electrozinc with a fine crystal zinc phosphate. No primer is normally used 25-40/im of finish is applied direct to metal. The required properties are best obtained with a thermosetting acrylic or polyester/melamine-formaldehyde finish. Self-reactive acrylics are usually preferred these resins contain about 15 Vo 7V-butoxymethyl acrylamide (CH2=CH —CO —NH —CHj—O —C4H,) monomer and cure in a manner similar to butylated melamine-formaldehyde resins. Resistance or anti-corrosive properties may be upgraded by the inclusion of small amounts of epoxy resin. Application is usually by electrostatic spray application from disc or bell. Shapes are complex enough to require convected hot-air curing. Schedules of 20 min at 150-175°C are... 

The characteristics of the three most common thermoset resin systems used in pultrusion are compiled in Table 11.2 [3]. It is noteworthy that unreinforced polyesters and vinylesters shrink 7-9% upon crosslinking, whereas epoxies shrink much less and tend to adhere to the die. These epoxy characteristics translate into processing difficulties, reduced processing speed, and inferior component surface finish. It is normal practice to use resin additives to improve processability, mechanical properties, electrical properties, shrinkage, environmental resistance, temperature tolerance, fire tolerance, color, cost, and volatile evaporation. It is normally the resin, or rather its reactivity, that determines the pulling speed. Typical pulling speeds for polyesters tend to be on the order of 10-20 mm/s, whereas speeds may exceed lOOmm/s under certain circumstances. Apart from the resins characterized in Table 11.2, several other thermosets, such as phenolics, acrylics, and polyurethanes, have been tried, as have several thermoplastics (as will be discussed in Sec. 11.2.6). 

Conventional industrial coatings materials of the thermoset type are usually acrylic, polyester, epoxy, polyurethane or silicone resins dispersed or dissolved in organic or water/ether-alcohol coupling solvents. They are cured with gas convection or electric IR ovens. The raw materials for the polymers come from petroleum feedstocks which are processed or manufactured into a finished coating system. 

Some commercial durable antistatic finishes have been listed in Table 3 (98). Early patents suggest that amino resins (qv) can impart both antislip and antistatic properties to nylon, acrylic, and polyester fabrics. Cyclic polyurethanes, water-soluble amine salts cross-linked with styrene, and water-soluble amine salts of sulfonated polystyrene have been claimed to confer durable antistatic protection. Later patents included dihydroxyethyl sulfone [2580-77-0]9 hydroxyalkylated cellulose or starch, poly(vinyl alcohol) [9002-86-2] cross-linked with dimethylolethylene urea, chlorotriazine derivatives, and epoxy-based products. Other patents claim the use of various acrylic polymers and copolymers. Essentially, durable antistats are polyelectrolytes, and the majority of useful products involve variations of cross-linked polyamines containing polyethoxy segments (92,99—101). 

In the case of acrylic molding sheets and semi-finished products, Wacker have elaborated a product concept based on silicone core-shell technology, which enables the manufacture of highly transparent particle-modified materials widi unproved RT and low-temperature (-40 °C) impact resistance and high weatherability [4]. Other transparent applications (e.g., epoxy resins, polycarbonates) are showing encouraging results, too. 

Side and cross members are pretreated by blasting and phosphating. An electrode-posited primer coating follows and is sometimes immediately overcoated with a topcoat based on an air-drying alkyd or epoxy ester, or on an oven-drying alkyd-melamine resin combination. After assembly of the truck, a third layer (i.e., a second topcoat) is applied that serves as a supply finish. These finishes are mostly two-pack acrylic aliphatic isocyanate topcoats. Water-based two-pack systems and powder coatings are the most recent developments. 

Uses Hexamethoxymethylmelamine in combination with alkyd, acrylic, epoxy, and oil-free polyester resins for solv.-based and water-thinnable baking enamels, paints, acid-curing finish foil paints Features Unplasticized solv.-free... 

CAS 58160-99-9 EINECS/ELINCS 261-145-5 Uses Adhesion promoter for water-sol./water-disp. resins incl. vinyl and acrylic latexes, epoxies, and phenolic binder dispersions for sealants, adhesives, coatings, insulation binders finish forwoven fiberglass filler treatments coupling agent for glass fiber sizes Properties Lt. straw clear liq. sol. in water insol. in toluene, ethyl ether, CCL reacts with acetone sp.gr. 1.076 vise. 4 cSt flash pt. (PMCC) > 66 C... 

The electrocoat bath consists of 80-90% de-ionised water and 10-20% paint solids. The water acts as the carrier for the paint solids which are constantly agitated. Paint solids consist of resin and pigment. The resin, which is an epoxy or acrylic-based thermoset, is the backbone of the final paint film and provides the corrosion protection, durability and toughness of the finish. Pigments are used to provide the colour and gloss. 

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