General-purpose finishes

The choice of binders for the topcoat depends on the end use of the coil-coated metals. Acrylic topcoats were developed earliest, and are widely used indoors for surfaces that are not exposed to water, chemicals, or mechanical stress. Polyester coil coatings provide a good general-purpose finish, and can be used for a wide range of applications (e.g., car interiors and accessories, caravan exteriors, domestic appliances). Tough, abrasion-resistant, and durable general-purpose finishes can be formulated with polyurethane and polyester resins in combination. 

Knowledge of finishes used to be proprietary, with most fiber producers using their own finishes and keeping the compositions secret. Commercial producers have developed good general-purpose finishes, however, which have found wide application. Only a few larger fiber producers still develop their own finishes, especially for critical processes. One feature has remained still, fiber producers do not reveal which finish is used or how it is applied. 

No. 4 finish. This is a ground unidirectional finish obtained with 150 grit abrasive. It is not highly reflective, but is a good general purpose finish on components that will suffer from fairly rough handling in service. 

Maracel XE is a general-purpose BW lignosulfonate that imparts a darker color to the finished product than, say, the Marasperse products (which are often used in CW formulations). 

P.R.48 3 is also recommended for the coloration of printing inks, especially for packaging purposes, and also for the paint field. It is recommended for use in architectural paints and general industrial finishes. The pigment demonstrates overall fastness properties which parallel those of P.R.48 and 48 2. 

EN 10088-3, Stainless steels — Part 3 Technical delivery conditions for semi-finished products, bars, rods and sections for general purposes. 

This forms an excellent starting point. But it is just that, a starting point. Unless you plan to merely scale up what you saw, the task becomes much more involved. As a starting point, let s review a general, all purpose finished formulation in Table I. 

There are three ERNALTEX bases F, CR, and T. Reaction with acids such as acetic, lactic, formic, hydrochloric, etc. forms the desired end-product. ERNALTEX F reaction product may be used as a general-purpose textile softener and color fixative in neutral or acidic media. ERNALTEX CS reaction product is suitable for finishing white goods in neutral or acidic media. ERNALTEX T reaction product is an effective color fixative in alkaline as well as neutral or acidic media. 

Buffered organic/inorganic metallic blend. General purpose catalyst with minimal effect on physical properties. Will not contribute to odor development and does not discolor finished polyester/cellulose or all-cotton fabrics. Excellent agent for carbamate reactants. 

General purpose wetting agent for use in printing and finishing operations. 

Good general purpose textile finishing hand builder. 

Epoxy primers are used as general-purpose primers on steel, galvanized steel, and aluminum, and under all types of finishes. These primers give excellent corrosion resistance on steel. Acrylic primers have a corrosion resistance similar to that of epoxy primers, and are used primarily under fluorocarbon finishes because of their superior intercoat adhesion. 

Chem. Deserp. Epoxy ester resin (soya oil type) in xylene Uses Epoxy for primers/coatings for metal surfs., floor finishes, elec, insulating coatings, OEM coatings, coil coatings, metal deco finishes, aerosol finishes Features General purpose... 

Chem. Descrip. Phenolic modified alkyd (TOFAoil type) in xylene Uses Alkyd for metal/wood primers, automotive/industrial primers, aerosol finishes, aluminum paints, machine enamels, flooring finishes, marine finishes, lawnmower/toy enamels Features General purpose resin fast drying and nonlifting Properties Gardner 12 max. color dens. 8.3 Ib/gal vise. W-Y acid no. 35 50% NV... 

Chem. Descrip. Sat. polyester resin in xylene Uses Polyester for coil coatings, metal deco coatings, appliance finishes, OEM coatings, furniture finishes Features General purpose baking resin... 

Uses Alkyd for baking finishes Features General purpose... 

Chem. Deserp. Short oil alkyd (coconut oil type) in xylene Uses TUI d for traffic marking paints, coil coatings, dmm/metal container finishes, office furniture finishes, truck paints, aerosol paints, prefinished flatboard coatings, baking systems Featmes General purpose baking resin... 

Chem. Descrip. Water-reduced alkyd (TOFAoil type) in butyl Cellosolve Uses Alkyd for general purpose baking finishes Properties Gardner 8 max. color dens. 8.8 Ib/gal vise. Z, Z, acid no. 42-54 70% NV... 

Chem. Descrip. Chain stopped aikyd resin in xylene Uses Aikyd for maintenance enamels, implement finishes, auto-refinish basecoats, general purpose air dry or force dry coatings, metal protective topcoats... 

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