Colored coatings preparation

If proprietary mixtures (colorants, coating mixtures, flavors, controlled release matrices, imprinting inks) are used as components, information on their compositions should be provided. Any alternates that have been evaluated and determined to be interchangeable also may be included. The sponsor should be prepared either to delete the alternative from the application or to generate fur-... 

Glassy polymeric materials were prepared by heating sodium plumbite-treated cotton in contact with a siliceous substrate The glassy polymeric materials resemble petrified cotton and contain considerable carbon They resist acid and alkali are hard and can serve as labels decorations adhesives between glasses or colored coatings ... 

The solution of sodium dimethyldithiocarbamate is a broad spectrum micro-bicide for controlling the growth of bacteria and fungi in pulp and paper manufacture and in related systems. It is employed not only as a slimicide but also for the protection of formulations used for papermaking, e.g. glues, starch and clay slurries and coating preparations. But when adding sodium dimethyldithiocarbamate to such formulations one has to bear in mind, that traces of heavy metals can cause colorations. For slime control one usually adds 50-200 mg/litre water, in pulp and paper mills 20-80 kg/100 t of dry pulp or paper per day. 

Sansoni prepared several samples of polycondensates of resorcinol, formaldehyde and Methylene Blue and tested their redox properties by repeated oxidation reduction cycles,9 with ammoniacal sodium dithionite as the reductant and acidic hydrogen peroxide as the oxidant. The best resins had a redox capacity of. 5 5 8 meq of Fe(lll) per gram. This novolac type of condensation was later used th azo dyes to give thermosetting colored coating compositions. When dye molecules are available with two condensable... 

SOL-GEL COLORED COATINGS Procedure of Preparing Coating Films... 

Grayish-colored coatings based on Cu-Mn-Cu-Cr-O spinel were prepared by sol-gel process. This multi-component double layer colored coating is useful for shielding ultraviolet as well as infrared rays, and maintaining the privacy of inner room. 

The current major commercial uses of annatto colors are in foods, especially dairy also used in drags as color coatings for granules, piUs, tablets, and herbal preparations, as well as in cosmetics (e.g., lipsticks) and hair dyes. 

Figure 40.16 Mixed oxide inorganic UV protective coatings prepared by epoxy assisted sol-gel procedure used for protection of a colored surface, (a) Photodegradation behavior, (b) Unprotected and protected coatings.

The dominant materials in flexible fascia are thermoplastic olefins, TPO (polypropylene modified with, typically, ethylene-propylene-diamine monomer [EPDM]), followed by polyurea (Fig. 6). Because of consumer preference for high surface quahty, most fascia are fuUy or partially painted with body-matching coatings. Unpainted fascia having molded-in-color are prepared fi om both TPO and ionomers of polyethylene. 

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