Class Code: 4558
Per NCCI's Scopes Code Description:
Code 4558 is assigned to employers that manufacture all types of paint. Pigments, drying oils, binders, whiting, varnishes, resins, solvents, thinners, and paint extenders are received from others. Paint is composed of a solid, the pigment, and a liquid, the vehicle (drying oils and resins) which form the film and, usually, a solvent or thinner to improve the ease of application. Paints may be either water-based or oil-based according to whether the thinner is water or an organic liquid such as turpentine. The processes involve a series of mixing and grinding operations in slow or moderately rapid moving machinery according to the particular paint being made.
The first mixing stirs the pigments and the vehicle into a uniform mass. Various milling machines may be used for finer grinding prior to adding the thinner. Paint extenders may also be added prior to blending.
The product is then piped to filling machines where various-size cans and drums are filled and labeled. Paint manufacturers may also handle various synthetic solvents that are used in the preparation of paintbrush cleaners and paint thinners. Also, putty and caulking compound manufacturing operations are included in this classification.
Code 4558 also applies to employers that process mineral or inorganic colors. The classification covers the dry grinding, blending, and testing of natural pigments such as ochre, sienna, umber, and red and brown and black oxide that are received from others. Following the grinding, mixing and blending operations, the pigments are bagged or packed for shipment. Code 4558 does not apply to employers that grind or blend organic dyes, dye intermediates, and lakes, which must be assigned to Code 4828 or Code 4829.
This classification also applies to employers that manufacture whiting. Ground chalk, limestone, or calcite is received from others. The operations involve fine grinding and mixing to produce various grades of whiting, which is used mostly as a dry color and as a filler and extender in pigments, putty, whitewash, etc.
Code 4558 also applies to employers that manufacture lacquers or spirit varnishes. Commercial nitrocellulose, usually wet with solvent (etheralcohol); natural resins, such as shellac, dammar, amber, copal; and synthetic resins such as ester gums, alkyd, and acrylate are received from others along with solvents or thinners such as alcohol, methanol, methyl isobutyl ketone, butyl acetate, toluene, and xylene. Spirit varnishes are solutions or dispersions of a resin or other film-forming substance in a volatile solvent which, when applied, harden by the evaporation of the solvent. Spirit varnishes are termed by the trade as cold-cut varnishes since they must be manufactured at a temperature that is below the flash point of the solvents used. Lacquers are, in some respects, comparable to spirit varnishes with the exception that more inflammable materials are used, including nitrocellulose or pyroxylin. The mechanical work of manufacturing lacquers or spirit varnishes is, in general, a relatively simple process involving the placement of the required ingredients in a container or tank and agitating or stirring them until the resin is completely dispersed or cut. The resultant lacquer or spirit varnishes are then filled into drums or tank cars. Shipping regulations usually require red labels.
Code 4558 also applies to employers that manufacture oleo resinous varnishes. Drying oils such as linseed, tung, perilla, and soybean; natural resins such as pine tar, pitch, and Canada balsam; and synthetic resins such as estergums, glyceryl phthalate, and alkyd are received from others along with thinners such as spirits of turpentine and dryers such as manganese acetate or borate. Oleo resinous or oil varnishes are processed by cooking drying oils alone or in combination with natural or synthetic resins in kettles or cookers, which may be heated by open flame, electricity, or steam for a period of time depending on the type of varnish product. When cooled, thinners or dryers may be added to reduce the consistency of some mixtures. Oleo resinous varnishes, when applied, harden by absorption of oxygen from the air. The finished products are filled into cans or drums and labeled or stenciled for shipment.
Massachusetts Refer to Code 4439 for Lacquer or Spirit Varnish Mfg. Refer risks engaged in the mfg. of nitrocellulose, thinners, or solvents to the MA Bureau.