Industrial finishes systems

Industrial finishing systems are applied to a wide variety of substrates, the majority of which are metallic, but they are also applied to paper, wood, wood composites, cement products and plastics. Often a high quality of decoration is required, as well as protection from a number of hazards, such as knocks, abrasions, bending or forming and contact with non-corrosive liquids. Resistance to the weather may be required. Outdoor finishing systems, and many others, are also required to protect metal against corrosion. 

In coatings and finishes selection, intended service conditions must be considered. To illustrate this point, consider the differences between service conditions for toy boats and for battleships. Table 6.3. shows the use of industrial finish systems in various service conditions. 

It is not possible, in a section of this size, to deal adequately with the painting systems used by all industrial finishers. Instead a selection will be covered. 

The paint industry employs P.R.22 in air drying systems, in emulsion paints, and occasionally in industrial finishes although there is some danger of blooming, and the appropriate limit has to be observed. Again, P.R.22 is much less lightfast in these media than P.R.l 12. Areas of application include paper mass and surface coloration, colored pencils, artists colors, and other purposes. 

P.Y.120 has less of an impact on the paint industry. In contrast to the similarly colored P.Y.97, P.Y.120 is fast to overcoating. Moreover, it exhibits noticeably higher durability. White reductions, reduced 1 1 to about 1 5, are approximately as durable as P.Y.151 systems. P.Y.120 is recommended for general industrial finishes, including automotive refinishes, and it is also suitable for use in architectural paints. P.Y.120 is completely fast to alkali. 

P.Br.42 affords somewhat dull, yellowish shades of brown in industrial finishes, such as alkyd melamine resin systems. The coating shows a certain opacity, the pigment, however, is recommended to be used in metallics and as opaque pigment as well. 

P.R.255 is recommended for high grade lead-free industrial finishes, especially automotive O.E.M. finishes. The commercially available grade tends to flocculate in many formulations. Additives to improve the fastness to flocculation are available on the market. The rheological behavior of finishes is characterized by an distinct thixotropy. This can cause problems at the production of mill pastes. P.R.255 is also of interest for the use in tinting systems for decorative paints. 

P.Y.108 is applied in various types of industrial finishes, especially in original automotive (O.E.M) and in automotive refinishes. It is also recommended for metallic finishes, although it is much less weatherfast in such systems. The pigment tends to seed, i.e., it forms specks upon storage. The mechanism behind this phenomenon remains to be elucidated. Besides, P.Y.108 also lends color to emulsion paints, in which it is durable enough to satisfy the requirements for exterior paints based on synthetic resin dispersions. It is also fast to acids, alkali, and plaster. 

P.Y.138 is primarily applied in industrial finishes for commercial vehicles, automotive refinishes, and original automotive finishes. Incorporated in these systems, P.Y.138 is acid and alkali fast. However, exterior house paints which are applied onto a basic substrate show some sensitivity to alkali. 

More significantly, the design of the whole system should be subject to an optimization process with respect to sustainability aspects such as cost and wastes [86]. As shown in industrial applications, there are surface finishing systems for which the recovery of electrolytes is feasible and economically attractive [87]. 

A sanding sealer is designed for easy sanding after short dry so that smoother top coats can be attained. Sanding sealers are most important in furniture finishes and industrial finishes such as automotive systems. 

The electrostatic powder coating method has had great appeal to those industrial finishers who are having their liquid systems threatened by the air pollution regulatory agencies. Powder systems have also proved effective in certain applications on their own merits. 

Table IX. U.S. Shipments of Industrial Finishes by Coatings Materials and Systems... 

Figure 3. U.S. shipments of industrial finishes by coating material and system ...

Cymel. [Am. Cyanamid] Melamine resins crosslinking agent for cationic resins, emulsions, coating systems, electroplating, industrial finishes. 

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... 

CAS 8002-74-2 EINECS/ELINCS 232-315-6 Uses LubricanL scratch resist, aid. antiblocking agent for aq. systems incl. water-reducible flexo and gravure printing inks, wood finishes, coil coatings, industrial finishes, latex paints, overprint varnishes Features General stir-in wax additive extremely easy to add to a formula with only mild agitation eliminates flotation and defoamer kickout problems... 

Uses Pigment toner for high solids resin systems, automotive and industrial finishes, plastics (vinyls, polyolefins, PS), textile inks Features Minimal effect on rheological props. exc. weatherfastness exc, heat stability in molded PP... 

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